Freiburger Explains Thermoquad Carburetors! - Roadkill Extra
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- เผยแพร่เมื่อ 8 ธ.ค. 2017
- The cry of “Thermoquad!” became famous in Roadkill episode 23, the one where the guys build the General Mayhem ’68 Dodge Charger using a 440 engine from a motorhome. Freiburger announced the Thermoquad as the only carburetor that punishes you for going to wide-open throttle. But what is a Thermoquad, really? Watch this Roadkill Extra and you’ll find out.
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As you watch, cruise over to Facebook.com/RoadkillShow, follow us, and watch for future posts asking for your questions to be answered on the Q&A sessions that are posted every Friday on Roadkill Extra Powered by Dodge. - ยานยนต์และพาหนะ
and dont forget to flip the stock air cleaner lid over for even more sound,
Something young people miss out on today.
And more power!!! On an episode of engine masters, they proved that flipping the lid actually increases power!! BTW, love the Cushman build!!! I used to live about an hour south of Pouquipsee.
Hey it's one of my favorite TH-cam channels to watch
you do get more air but in minnesota it defeated the warm air system causing carb icing and poor mileage.
Yes the vehicle would get better mileage with the factory warm air system working properly.
I love the sound of a quadrajet when the secondaries open up.
Had one on my 71 Dodge Demon and it always seemed to starve the engine when you stood on the throttle. I was running NHRA stock class so I got in touch with Ed Hamburger at MOPAR and he showed me how to modify the accelerator pump lever and how to get the air valve on the secondary to open all the way.
Once I got that sorted out that 340 screamed at wide open throttle.
I liked that carb because I never had a fuel percolating problem at the track on a hot day and no vapor locking.
'71 TQ's are quite a bit different looking than all the rest TQ's. I've only seen 2 in my lifetime. I have one in pieces, and Steve S. from Tacoma used to have one on his 71 Demon. I have a couple hundred of those later TQ's, but probably 1/2 of them are Lean Burn TQ's, which are not as useful.
Thermoquads and Q-jets are like mullets; Business in the front, party in the back!!
this would make a killer episode of engine masters. Holley vs Edelbrock Performer/AFB vs Edelbrock AVS, vs Q-Jet, vs ThermoQuad vs Predator vs FI tech TBI fuel injection.
AWSOME!! I have 14 thermoquads in the garage. I even have an original 70’s offy spreadbore DUAL CARB for a b block mopar.
Love
Thermoquads!!!!!!
Soon to go on one of my 1979 t top 300
I have a couple of them. One, to use on a 440 and one I'd like to use on a small block. Can you just swap a big primary 440 bottom plate for a small primary plate for use on a small block?
Thermo-Quads are not easy to tune but they are great, great carburetors! Smooth idle and smooth ride in low rpms, great torque and incredible top end power! I’ve tried almost everything in my bbc, Holley, Edelbrock, fitech, I really like the Thermo-Quad better, awesome Carburetor!!
Thermoquads are extremely easy to tune. I’d love to hear what’s so difficult about them. I’ve been running them for 25 years, and put them well into the 11s on street cars.
@@Joesmusclecargarage hi! secondaries tend to be lean at low rpms and too rich at high rpms, maybe the reason is I live at 9000ft over the sea level. Probably the altitude make it harder.
Freiberger, around 1972-73, I ran a 1000 cfm thermoquad on a 283 SBC with an adapter on a Z28 manifold and Z28 solid lifter cam with a 4 speed behind it in a little Chevy II. Worked perfectly. No complaints here.
Nothing was as cool as the sound you got from flipping the lid on one of these.
Agreed.
I ran/run a few Edelbrock carbs, they are simple, easy to tune, no power valves.
Might lose a few HP to a well tuned Holley, but I rather be driving than tuning a Holley.
Such an old video but I have to comment.
The thermoquad came in three different CFM ratings. If you're lucky enough to have a first run issue on a 340 that was the 1000cfm Competition Series.
The 800-850 was next and it's secondaries are 1 1/2 with the third being the 800s whose secondaries are the smaller 1 3/8.
The secondaries are considered vacuum and not mechanical. It must be used on a spreadbore intake and as someone else mentioned WITH the 1/2 spacer as it also displaces heat. Not using the spacer, and placing the TQ directly on the intake, is the primary reason for the phenolic bowl to warp. The other reasons that can cause issues are using a screwdriver to pry the air airhorn off or over tightening of the airhorn's 10 bolts.
The main reason why people do NOT like the TQ and may prefer Holley is that they don't take the time to properly adjust the TQ, but when properly adjust will outperform equivalent carburetors of the competitor's if done right.
People prefer Holleys and Edeljunk as they are easy to work on but who wants to keep replacing power valves and adjusting float levels at every turn on a Holley or adjusting the A/F on an Edeljunk day in and day out?
Take the time to do it right and the TQ will smoke the competition. I have ran a TQ for three years after trying numerous Holley and Eddy carbs and the others are just a time consuming hassle. If you set the TQ properly, you wont have to touch it for a very long time.
My 71 340 dodge demon had one and my MOPAR direct connection dealer had all the good tech info to make them work fantastically.
One of the best videos yet!
Love these Episodes keep it up guys
Awesome video
Worked on plenty of them in the day. But never knew the facts and history
that was good and straight to the point thanks keep up the good work guy's
For a carburated off roader you cant beat a tq, those sidemount floats keep fuel going while on an incline.
Never knock Q Jets and TQs. Both very efficient for their application being fairly standard engines. Both a pain [dont do it] to modify but generally better than a square bore Holley on a stock engine.
I have worked on a 70 Challenger 340 with the TQ and I feel Mopar even used them earlier. Here in Oz Ford used them on 302/351 Clevelands from 76-82. But so lean and such crap cams they burnt out engines. Not the carbs fault just the spec they were made to get those emmissions.
Honestly though, how many people actually need more than the 800 cfm a q-jet delivers, or the 1000 cfm available with a thermoquad? I have a q-jet on my 400hp Buick 350 and love it. 22mpg on the highway, but still able to put down power when I want it to.
Quadrajets and Thermoquads are great carburetors. People only dislike them because they're too dumb to know how they work. Or they rather have the easy carburetors like holleys or edelbrocks. which is understandable. In a hurry on race day, pop the front bowl off your holley, change jets, off ya go. Qjets are set and forget, but they look scary and daunting to the uninformed and are not very user friendly. They only bog if the air doors are too loose. That's it. On qjets there is a little 3/32 allen set screw and a flathead screw. Adjust the tension, drive around, floor it, repeat until bog is gone and carb performs to your liking. Not hard.
Also, for you new or old to the world of Qjets, if you have the later hot air/electric choke style (usually '75 and up had em), take the carb apart, punch out that aluminum plug infront of the choke tower, and tap it for a pipe plug. Badda bing badda boom. Instant adjustable part throttle without having to take the damn airhorn off. An AFR gauge helps wonders too. I've seen people get an additional 5mpg from tuning the apt screw alone.
got a bone stock 1977 silverado.....400 small block, np203 full time 4, and a 6200 GWVR sticker (so its a heavy half ton (no smog)....but 4 wheel drive....)
rigged up a manual choke....its backwards....push in to choke, pull out to open
but....even when its 30f outside...... crank crank crank VA-ROOM.....all 8 holes fire
no bog.....just the chevy power moan.....BAAAWWAAAGAWGAGWGGAGWA
its a carter j-jet from the 60s i think...... their is only like 3 vacuum ports.....1 big one for the brakes, and 2 smaller ones for vac advance and the heater doors
which is all i need on that non-smog truck
i think the PCV is going to an intake port....as theirs no spot for it on the carb (iirc)
ive driven other qjets...... this carter qjet is better
it just starts so nice....even in -40f montana winters
and full and part throttle are spot on
the truck gets about 14-16 mpg......with a th350 with only 1st and 3rd.....a 400....and full time 4
im going to swap in a SM465 4 speed standard trans and a np205 part time (from the EXACT same "parts truck"....even came with a 400...but, obviously, came with a 465/205 combo)
should get 18 to 22 mpg.... which is amazing for a 400 SBC in a 4200 pound truck with areo like a brick.....
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and my dads 450hp 440 in his 72 plymouth satellite sebring plus.....has a thermoquad
runs WAY better than that demon ever ran...
Yep. Qjets: when they're good, they're good.
you are exactly right. I am one of the few who took the effort to learn how the Quadrajet works. its strengths and weaknesses and learned how to tune them. you can achieve both fuel economy AND power from them. and they work very well.
My dad had me rebuilding quadrajets when I was 6-7. Was something he could sit me down to do to get me out of his hair at the time. I used to be able to tune one to make it scream. Pick them up for free from the idiots that couldn't tune them that put a holley on their car. In a few months when the same idiots got tired of tuning those holleys all the time sell them their rebuilt carb back for $150, lol.
Same here man. I'm self taught, and sure there's still a lot to learn, I can rebuild em to run hard.
always fun to watch you geek out.
David, I been rebuilding Thermo Quads since 1971! Great carb! I have the 750 cfm on my 71 Demon 340
I also have a 1,000 cfm my buddy ran in 1972. Easy to rebuild. My last rebuild was 1985 and still running strong! Love the sound too!❤
Quadrajet carburators are great, plus the sound of them at wide open are even better.
I have rebuilt many Thermoquads. They are good carburetors. Usually, all that was wrong was the 2 thick rubber washers for the main wells would get soft or crack.
They’re called X-rings. You’re welcome.
@Joesmusclecargarage That's what you call them. The square cut o- rings don't look like X's. Have a great day.
Freiburger is the only person that can say thermoquad in the way it sounds like it should be said
Actually, he's saying thermal-quad not thermo-quad...
...no he isn't.
I can remember going to the scrap yard and finding one of these on a Dodge and taking it. Loved the "Thermal Quad" idea!! LOL I stuck it on a 318 that I put a 4 barrel intake on. It ran okay and made a great noise...LOL..LOL
They remind me a lot of the Pierburg 2E you find on 1980-1990 VWs. A good but very misunderstood and hard to tune carb.
The sound of a 440 magnum police car (71 and older) is only exceeded by a hemi equipped vehicle with factory exhaust, yes i was around when people were driving factory hot rods just like they left the factory.
You had the ford vs chevy vs mopar BUT the elephant (hemi) silenced them all...
In essence the Carter Thermoquad's secondaries operated somewhat like a constant velocity carburetor found on some motorcycles where demand increases the air/fuel mixture from the carb so that it doesn't overwhelm the engine and cause it to bog like when you put a 850 Holly double pumper on a small stock engine that can't handle it.
750 Holley double pumper on a worn-out 68' 307 Chevy small block. I know from experience how bad of a time that is.
For 2-1/2 years I had dozens and dozens of people come into my shop with that very same problem. The look they give when i say "Carb too big" lol.
I put the heads/manifold/Thermoquad from a 360 magnum on a stock 318 and it ran just fine. Didn't really open the secondaries much, though
that's exactly what I was thinking. my only experience with carbureted engines is my motorcycle which features a Keihin CV, that little trap door made me thin of the slide/butterfly assembly immediately
Tune in next week when David explains Betamax video players.
I had a carter wcfb 4 barrel on my 57 chevy 283. I used to see the mechanics, were I worked, draw filing the fuel bowls to get them to stop leaking(warping) otherwise they worked. my 48 chevy had a Zenith carb(I never did know why but it was original equipment).
my 6.6 TA had a quadratoilet on it. i could see the gas gauge dropping at WOT...yet my 73 merc Capri had the sqaure webber. awesome little car.
Good stuff, this is interesting
Love some the cars these guys build and the projects and knowledge is vast I was fixing up my car but a few days ago on the 9th I hit ice and wrapped it around the end of a guard rail but somehow managed to walk away with just bruises lol back to the drawling bourd
Thermoquad+flipped lid + that v air cleaner + salad bowl. Make it happen Freiburger
Fuzzcopter I like tigers that I’d love to see
74 Plymouth Satellite police package....high performance 360 with the Thermoquad. Secondaries were like toilet bowls. Loved the sound when you put it to the floor.
Thermoquad came in 850 and 1000 CFM versions. Hot Rod Magazine did a story on the 69 Buick GS that had a 1000 CFM thermoquad installed as a replacement for the GM 750 CFM Quadrajet that came on the car originally. The car ran at least two seconds quicker in the 1/4 mile. They costed around $85.00 back in the day. I should have bought a few, but never did. Too bad, they would be awesome today!
Maybe 2 tenths of a second faster (0.2)?????
2 seconds faster? LOL...no.
Those cfm versions were aftermarket "Competition Series" Carters. The oem's were 800 & 850's.
TQs work very well when set up right. 1 trick is to epoxy the fuel sumps for the main metering pick ups, 1 on each side, to avoid the OE glue from disintegrating and the caps falling off, which leaks raw fuel into the engine, creating a hard start or just a horribly rich mixture. Another is NEVER over tighten the screws that hold the 3 main pieces together, and follow the sequence. You'll warp or even crack the plastic bowl if not. Lastly, rebuild kits are still available, and brass AFB/AVS floats can be made to replace the OE foam floats, BUT, if your TQ is running lean, be sure to check the throttle bushings in the baseplate, both primary and secondary, for vacuum leaks. These are N/A new and if yours are worn out, you need to source some NOS 1s, or find a different baseplate..( this happened to me and I eventually retired the old girl for a 750 AFB) Another thing of note, is when custom tuning your TQ by changing metering rods, please note that there are 2 different length rods! The shorter rods will fit, but will cause massive flooding. Let me hear that WWWaaaaaaahhhhhhhhhhhhhhhhhh!!!
Thanks for the tips! I'm going to be rebuilding my TQ in the spring on my '79 Dodge pickup. It's on a 318. I'm almost 5,000 feet higher than where I picked it up at.
If you have some machining skills you can counter bore the shaft holes and replace them with bushings...
The biggest problem with the plastic float bowls is ham-fisted mechanics soak them in harsh carb cleaners meant for pot metal carbs. You should NEVER soak those plastic bowls, just use mild solvent to brush out the junk accumulated in them. Soaking them will damage the glue on the constant feed caps, and "dry" out the bowl, it will lose its smooth plastic surface finish.
I feel like Freiburger is a boss at reading prompters or remembering lines because there is no damn way he holds all of this knowledge. I can't even remember what I went to the fridge for half the time and he just spits out knowledge like a audio book.
Joe he's a smart man been around this kind of stuff most of his life
Joe If you're really into something, you'll learn all about it
I am sure he thinks about what he is going to say and refreshes his memory about things generally. There is nothing wrong with that.
Joe
10 minutes with Google can refresh years of dusty memories.
I can't tell you how much stuff I "forgot" until I was asked about it and every stupid detail came rushing back to front of mind like a dam breaking
I read Summit and Jegs on the can.
Helps when you work on a project, or just want to acquire information that your buddies will look up anyhow.
I had a couple of quadrajet carbs, one on my 1970 Transam and one on my 1976 Chevy shortbox pickup, only complaint with them was the piss poor stock filter that would let small debris in between the needle and seat and the carb would flood forcing you to take it apart to clean it, problem was solved with an after market fuel filter plummed in
I would like David to do a show purely for him explaining some of his best moments through his life and some of his most loved accomplisments.Or write an auto biography.
Stephen Smith "Auto biography" I see what you did there.
My favorite carburetor. Back in the early 80s I had a 72 340 Duster that had the thermoquad on it. I think it was a great carburetor and worked well. A lot of people did not understand how to adjust them but I won't up working on thermal quads and quadrajets where most everybody else only knew how to work on and adjust or modify Holleys everyone I knew that had Carter or Rochester carburetors having me work on them for them.
Holleys are the carb for Dummies...
I worked at the Carter plant from the late 1960's to around 1979, then went to Borg Warner where the built small engine carbs. I worked on the TQ and QJ lines as the line inspector as well as the AVS, AFB and BBD 2 barrel lines. It was a great place to work, and they produced some great fuel systems. Have been asked to rebuild a quadrajet, and and AFB or two...
I had one on a 302 Ford. I turned the air cleaner upside down to let more air into the Carter thermoquad carby
way back in old times when i was a 17 in 1987 i had a modified pontiac 400 in a newer 4 door catalina we called the four door tire fryer that had a spreadbore carb and the tires would chirp when you kissed the secondaries in first gear and if you floored it it would either rip the tires apart or grab and accelerate so hard the dash board would shake and sometime the slide in stereo would slide out, weaker passengers would scream for their lives "omg slow down! ahhhhh"...but now im all efi
you can adjust the spring tension for the secondary and there were different needles and you can adjust the needle heights very customizable
Called, "rods", as in "metering rods".
I love the content. I hate that youtube chooses to play a toyota ad before EVERYTHING motor trend uploads for viewing.
I LOVE TOYOTA ,BEST VEHICLES YOU CAN GET NOWDAYS
I really like these thermoquads
SO if I understand correctly, on the secondary side of things... there are the butterflies(?) AND the 'door'. Is that correct? Also, does that 'door' operate on barometric(?) pressure? The more suction the more it opens?
Freiburger you should do an explanation on the 6pack from the molars and the triple duece from the old school GTO
I like to see a video to compair this with other carbs
Have a 1973 dodge challenger daily driver the thermoquad works great every time; well as long as it isn't 110 degrees outside.
The one on my 340 Cuda ripped very well. The 4 spd was a riot.
simply fred best factory carb
Had one on my '80 Ramcharger with a 360. Near the end of my time with the truck I had to manually jam the choke open to get it to start first thing in the morning. Never did enough troubleshooting to figure out why.
The fuel bowls leaked and flooded. Epoxy was a quick fix. Qjets used foam sponge to stop leak.
I like them, they have different sizes for different engines.
Its best to keep the largest fuel line up close to carb.
Does anybody remember the old Predater carb from the '70's? It was one large square bore with a vacuum operated valves like the Q-Jet secondaries and it had the same outside footprint of the square bore Holleys. It was something of a mystery carb that never really caught on.
I tried one on my freshly built 440 in my truck and just couldn’t get it right. Sent it back and went with a 750 edelbrock and was never happier.
That Freiburger is a one take wonder! Turn him on and watch him talk, I could listen all day.
#mancrush nohomo
He's a true car geek with the stuff he knows.
So true !!!!
He has a great voice for this.
SMI carburetor sells these carbs "worked over" for your specific application. I switched from a holley to Q jet and it gave me 3 tenths better in the 1/8th. Setting it up and finding a good reman'd one from Autozone was the tricky part,lol.
Never get a reman qjet. Ever. They're all shitty, shitty castings, mis matched parts, etc. Very rare you get one that works well. SMI, Everyday Performance, Mountain Man. Cliff Ruggles, QuadrajetPower, etc. All good qjet places.
@Jesus Christ I don't know what kind of Holley you had, but if you improved your times by switching to a Quadrabog then you probably went from a 600 CFM Holley to a 750 CFM Q-jet. I'm certain you would see an even bigger improvement if you put the right size Holley on it, especially one of the models made with no choke tower for improved airflow. Everyone with a race car is using chokeless Holley's for a good reason. You can also cut the choke tower off of any cheaper Holley and get the same basic effect, you just have to be careful not to cut the air horns off.
A properly set up Qjet will typically run dead even with a Holley peak to peak but with more area under the curve which is how they were designed - as kickass street carbs. A square bore suffers in street driving in comparison.
The Autozone ones are pure garbage.
How about doing one on TBI FB's . And top replacements.
So if it bogs down when you gun it how can you tell if it’s not getting enough air to open the back butterfly
can sombody please tell me where you plug the two plugs in
That was my most memorable carb!!!
So much knowledge in that funny shaped head
I wonder how it would affect performance on a rotary?
I'm looking to replace the Carter Thermoquad 440 Carburetor on a motor home. Which one do you recommend me getting?
I've got a Quadrajet on my 79 K10 pickup. totally stock 350. hot air choke. Once I actually took 5 minutes to adjust the choke the thing now starts first time every time with just one pump to make sure the choke is set and to splash a little fuel in. The truck always ran pretty decently (i've had it about 2 years now) but it just never started up immediately. All it took was a little adjustment on that choke and done, high idle works well, blip the throttle and it idles right back down like it should. I'm by no means a mechanic so it was a big deal for me to have done that by myself. lol. The truck is just a project/toy. And the last vehicle my father and I both worked on before we lost him to cancer back in January.
I need to find something to drop a Thermoquad on. I've got a few vehicles I picked up recently that I could make an attempt with. Would need to put a new intake on the 350 in my station wagon because it's got a crappy 2 barrel intake on it now.
Do thermoquads use the same jets and metering rods as AFB and AVS carbs?
Thanks heaps for your informative videos.
No
I've got one of these mounted on a 440 in my 1975 Dodge pickup. It's no slouch.
Roadkills 75th episode should most definitely be the Battle of the best between Roadkill, roadkill garage, and hot rod garage definately would left to see nascarlo vs 5.0 mg
older gentleman always said "you gotta be 3% smarter than what your working with". as long as there is a junkyard and parts house there there are good Carter products.
Only 3%?
Wish I had this inter web thing, back when I was younger. The knowledge given to us, here, would’ve come in handy, and we all would’ve had some bada$$ cars tooling around our high school.
Knowledge like this was only reserved for those in the machine shops. And they weren’t sharing.
The TQ was used here in Oz 76-82 on 302 and 351 Clevelands.. Set so lean that they BBQ the valves and seats and guides.
Though a then Chrysler Australia employee I know had one on his 327 Chev Holden. And it was quick.
The 340 Chargers were never officially released though quite a few got out the back door. A couple in VG 2 door [Dart to the USA] and then VH Charger [A body]
The Supercar furore in 72 lost us the 340 Charger, 308 XU1 and Ph4 GTHO Falcon. Blame all Muttering Rotters.
Don’t forget the WCFB - Will Carter’s Four Barrel. I believe that’s the one David referenced as the original four barrel. Marketing department knocked it outta the park when they named that one!
White Cast Four Barrel. It had to do with how the carb was built.
International used them for a few years as well as well.
What is the cfm on that carburetor i have one ?
waaaaooooooooooooo.....my favorite sound from a stock 4 barrel carburetor....
hey i am a thermoquad fan! I am wondering what kind of epoxy you or Dulcich have used to repair the primary jet wells? Thanks...you guys rock!
Miller-Stephenson Epoxy 907, two part epoxy. NSN 8040-00-144-9729
Very cool.
In the Eighties my B&M blown '70 Z28 454 had dual Carter AFBs. Never knew AFB meant Aluminum Four Barrel.
We always said AFB meant Awful Fuckin' Big.
Neither did I until I saw this video.
Don’t forget the 1000cfm race version from the late 70’s
Hey guys, these were fitted to every Cleveland from the XC-XE Falcon's in Australia on both 302 and 351 variation s.bwhaaaarrrrrrr definitely brings back memories haha
They were on XB 302's as well, had a GS wagon with one.
Just found this video, came here to say what you just said, only not as well. I had a P6 LTD (long wheelbase XC) with a 351 and a Thermoquad. God, I miss the noise!
For a long time Carter was making more quadrajets than Rochester. I was the first assembly line inspector on the TQ line.
I love old motorhomes.
Thermoquad - The v-tec of the 70's
lobmin quadrajunk doesn’t even come close to a thermoquad
Kristopher Klassen oh I meant to say thermoquad, sorry
lobmin apology accepted. And that’s thanks, apologies are stupid rare on TH-cam
Kristopher Klassen yeah, people are crazy rude on the internet
Kristopher Klassen hola 🤗
My cordoba 400 in my 77 newport has a fully electric carb with a float level sensor and solenoids instead of mixture screws. It is 800 cfm
Chrysler did not use a feedback carb on anything prior to 1980. The Lean Burn cars from late 1975 - early 1980 still had mixture screws. Lean Burn at that time was actually the Electronic Spark Control system that controlled spark timing and advance. In 1980, Chrysler added the Electronic Fuel Control system to the now-digitized ESC. It was introduced in certain markets, and by 1981, all passenger vehicles and light-duty pickups had the new combined fuel/spark computerized control.
Most lean burns had an idle position transducer. Some had an electric solenoid controlled bowl vent. The OP is totally misinformed.
My 1974 Grand Prix had a carter quadrajet
Simplest carburetor to rebuild and tune.
I could take one from a 440 and place it on a 318. With a little adjustment, it would run great.
Good God... Did Alana restore a thermoquad? That thing looks new.
You should do a vid on a third gen trans am
Needs more in depth carb videos
Five vintage Mopars in my yard - two motorhomes (360 and 440), a Newport (400), and a pair of trucks (318 and 360), and they each have a Thermoquad. Why? Cause they work, and the sound is pure Mopar. I love the looks I get when my old motorhome blows the doors off another motorhome and the howl from the TQ rattles the next ride over.
As an old Carter employee, and having worked on the original TQ assembly line I appreciate the kind words...
Two Guys Garage on Velocity covered this almost word-for-word back in April. Strangely the episode replayed just this morning. Not claiming plagiarism but it was shockingly identical.
thanks frei
I had a 79 st.regis cop car with the thermo quad and it flew.
What's that wire for?
Did I miss something? Frieburger never said why it "punishes you for going wide open"...
i was about to ask the same thing
That was a reference to the General Mayhem buildup episode when they were testdriving the RV. Big heavy vehicle with a worn out Thermoquad. Floor it, nothing happens, engine gets a bunch of fuel at a low rpm, pops and bangs. That's the "punishment". Save with all air valve carbs when they get worn out or mis adjusted.
the "punishes you for going wide open" quote is because when you go full throttle, and the big secondarys open, it makes a loud noise. that noise that it makes can be heard from blocks away, and it was right next to them
Didn't they used the Carter Thermo-Quad, 6568S 4 barrel carburetor, on some 1974 Lincoln Mercury Ford 460 Engines, for the 1974 year model?
I've gotten some off of some Ford's. Don't know if they were oem.
Yes
So it's kinda like a Predator carburetor?
i love they make parts for their competitors
also, carter-weber is a thing.
I want yall to fuck around with a miata...I've been waiting patiently.
Don't forget that Carter had to help Rochester out making the quadrajunks when they got burdened down.
Nevermind you mentioned this 10 seconds after I said it
Quadrajet carbs are great just like Thermoquads....you just have to be smart enough to work on them....
c'mon now, lets not forget about the quadrobog either, lol its close cousin no doubt.