I just want to correct one thing, the roots style was used in Detroit diesel engines because they were 2 strokes and didn’t have an intake cycle, so no vacuum to intake air. Instead after the exhaust valves on top opened the port at the bottom where open by the piston, that’s when the roots blower would do it’s job of scavenging the last of the exhaust by forcing fresh air in its place. Later when they introduced turbos to the equation they learned the blower itself was a restriction as it didn’t create any pressure just move air, so they added a bypass valve to bypass the supercharger when the turbo was building enough pressure and flow to scavenge and supercharge the engine .
I personally hated the supercharged/turbo charged Detroit used by the military. The CAT I6 turbo that replaced it was such a better experience in both operation and maintenance. Turbos also can run a much higher pressure ratio efficiently as well. Good catch on the info.
@@user-cq6fk5go3syep! I loathe a 2 stroke Detroit. The most efficient engine ever made at turning diesel fuel into noise, black smoke and nothing else.
@@user-cq6fk5go3s I spend many hours behind 7 tons. I’m sure glad I got to experience the CAT C15 noises and not the Detroit. Also the LAV-25 still uses 2 stroke detroits. I think it’s the 6v53, and they’re slow as f*ck
I put on a used 64 mm Precision turbo on my Honda prelude with H22a my best dyno run 407 whp. It's been pretty reliable past 4 years. I bought used rods pistons that were in great shape. The springs and retainers I bought new. I am happy with the car.
I'd love to see you guys do more on the diesel side of things! I have a 2005 Ford Excursion with the 6.0l Powerstroke, and would love to see upgrades for that engine, or even just basic troubleshooting for things like reduced power, without having to spend a ton of money on a diagnostic machine!
I sure would like to see you guys able to take another 1970s inline 6 cylinder that is a 300 cubic inch and bore it out to 312 and adding, 2 Cobra Jets carburetors on it and see how much Hores power will be able to do. If something like that is able to be done. And keep it old, Skool style. Because I have grown up during the early days of the 60s and throughout my life in 70s era's and 80s. Because of that, we didn't have any other options as well as where for today. So love the old Skool type of engines.
Turbo good for most power. Supercharger for quick response and no lag to keep up the boost. Turbos can use antilag to keep boost built up but at risk of higher Mechanical wear.
2 stroke diesels don't self scavenge, so a blower on them is needed to make them really run at all. A 6V71 (or whatever) is considered NA if it only has the factory Roots blower, it gets a T with a turbo and A for charge cooling
lots of mid 80's/90's early 2000's vehicles really only need about 5psi to get up with some of the newer stuff on the 2030 floor. cant get anything for less then 100k, don't blow it up.
I would like to see a show on wiring a race car push button start and wiring up the gauges, including a neutral safety switch. when to use relays when to use fuses and what gauge wire
If I was rich, I would definitely want to build a big block with a roots blower. If I had a cheap car i wanted to drag race occasionally, and it wouldn't ruin me if I blew it up. I would do a turbo setup. But neither of those pertain to me. So if I ever get the inspiration to boost something. I'll probably just go with a regular belt driven supercharger for it's simplicity. But most likely I'll just stick with naturally aspirated engines.
SO IN GENERAL, turbos and centrifugal SC benefit from high rearend ratio and or higher stall convertor to keep engine higher up in Rpm band where Hp N Tq really start building? Roots type blowers make instant TQ so dont need as much rear gear or stall? if correct those factors need to be taken into account overal for build specs and extra costs not to mention special camshafts
Ready for the DART JZ build! Would love to see a Fwd ram EFI manifold for BBC! The 90s on the center intakes look strange. SteveMorris or Borowski Intakes? PS: You used PSI, kPa, and Bar measurements.. hahah
The roots style blowers on Detroit diesels were just that, blowers. They were not used as a supercharger or a power adder. A two cycle diesel engine will not run without air being blown in by a blower.
Can you test those intercooler coolers? Co2 spray on front of an intercooler and I saw a video on social media there was a nozzle spraying something in the turbo inlet. What is that?
Wouldn't mind adding some boost because the Chevy 5.3L can handle it. The 6L80.....not as much. You can add a bit of power but it's not exactly the toughest transmission out there.
Don’t forget about turbine drive pressure! If you have 20PSI of exhaust pressure driving the turbine then you have 20PSI acting back on the piston and this takes power from the crank as well! No such thing as a free lunch right @GaleBanks!
The two stroke detroits needed it to run at all. With out a blower it will not run. That’s a natural aspirated two stroke Detroit, if you wanted it turbo charged you need and intercooler under the blower and a turbo on top of the blower.
Why never a performance 4 cylinder?.. It's been proven that they can make power and be badass... You'd take and make 500-600 hp building a v8 and you can do it with a 4 cylinder too..but you don't.. v8 is easier but it isn't necessarily ha4d to make comparable power with half the cylinders and a DOHC setup.. and...more people are building 4 bangers these days that it wouldn't be and un-relateable build...
I just had a crazy idea. Boosting high mileage engines like the 4.3L 262 V6 Chevy engine from the 1990’s. Or the iron duke! Just for chits and wiggles…🤣
I just want to correct one thing, the roots style was used in Detroit diesel engines because they were 2 strokes and didn’t have an intake cycle, so no vacuum to intake air. Instead after the exhaust valves on top opened the port at the bottom where open by the piston, that’s when the roots blower would do it’s job of scavenging the last of the exhaust by forcing fresh air in its place. Later when they introduced turbos to the equation they learned the blower itself was a restriction as it didn’t create any pressure just move air, so they added a bypass valve to bypass the supercharger when the turbo was building enough pressure and flow to scavenge and supercharge the engine .
I personally hated the supercharged/turbo charged Detroit used by the military. The CAT I6 turbo that replaced it was such a better experience in both operation and maintenance. Turbos also can run a much higher pressure ratio efficiently as well. Good catch on the info.
@@user-cq6fk5go3syep! I loathe a 2 stroke Detroit. The most efficient engine ever made at turning diesel fuel into noise, black smoke and nothing else.
@@user-cq6fk5go3s I spend many hours behind 7 tons. I’m sure glad I got to experience the CAT C15 noises and not the Detroit. Also the LAV-25 still uses 2 stroke detroits. I think it’s the 6v53, and they’re slow as f*ck
Great comment I wish I’d thought of and 100% correct.
I can hear Mr.Banks yelling behind me about AIR DENSITY
I put on a used 64 mm Precision turbo on my Honda prelude with H22a my best dyno run 407 whp. It's been pretty reliable past 4 years. I bought used rods pistons that were in great shape. The springs and retainers I bought new. I am happy with the car.
I have a F22a6 in my Accord SE, do you have a write up on the process? I would love to do this to my F22
I’m about ready to boost my h22a too. What rod and piston combo did you use and what psi was the 64mm running at?
I would love to see these guys build a good old fashion 6-71 roots blown big block chevy with carburetors as a nostalgic way of builds
Now that's the way to make a video! Right to the point, very precise and well explained.
I'd love to see you guys do more on the diesel side of things! I have a 2005 Ford Excursion with the 6.0l Powerstroke, and would love to see upgrades for that engine, or even just basic troubleshooting for things like reduced power, without having to spend a ton of money on a diagnostic machine!
I sure would like to see you guys able to take another 1970s inline 6 cylinder that is a 300 cubic inch and bore it out to 312 and adding, 2 Cobra Jets carburetors on it and see how much Hores power will be able to do. If something like that is able to be done. And keep it old, Skool style. Because I have grown up during the early days of the 60s and throughout my life in 70s era's and 80s. Because of that, we didn't have any other options as well as where for today. So love the old Skool type of engines.
Turbo good for most power. Supercharger for quick response and no lag to keep up the boost. Turbos can use antilag to keep boost built up but at risk of higher Mechanical wear.
Best video I've seen in a bit.
Good stuff. Thanks guys.
I’d like to see a big cubic inch LS built for torque
Pat is the man!!
2 stroke diesels don't self scavenge, so a blower on them is needed to make them really run at all. A 6V71 (or whatever) is considered NA if it only has the factory Roots blower, it gets a T with a turbo and A for charge cooling
Always great videos..👍🏻👍🏻👍🏻👍🏻..😎
Please make a 401 Buick Nailhead engine. How much can you get out of it 😀. All the best from Denmark 🇩🇰
lots of mid 80's/90's early 2000's vehicles really only need about 5psi to get up with some of the newer stuff on the 2030 floor. cant get anything for less then 100k, don't blow it up.
I would like to see a show on wiring a race car push button start and wiring up the gauges, including a neutral safety switch. when to use relays when to use fuses and what gauge wire
I’d love to see a deep dive on engine belts, one episode.
Would love to see you gents find a Pinto wagon/cruiser wagon, turbo the 2.3 four banger and upgrade the suspension for better handling.
A combo, super turbo build would be interesting, tried just a couple of times factory.
Absolutely! What else great mpg and double the power. Turbo ❤❤❤,er
Yes. Always worth it. A 78/75 will make an easy 700 wheel on a 5.3, with a cam and springs. That's not pushing too hard. It can still be docile, too.
Rrrrrrrrrrrr .... Here's Blake !
If I was rich, I would definitely want to build a big block with a roots blower. If I had a cheap car i wanted to drag race occasionally, and it wouldn't ruin me if I blew it up. I would do a turbo setup. But neither of those pertain to me. So if I ever get the inspiration to boost something. I'll probably just go with a regular belt driven supercharger for it's simplicity. But most likely I'll just stick with naturally aspirated engines.
So many more questions. Great intro to the topic, though.
I would love to see a boosted AMC v8 I'm building a 360 with a supercharger in a willys pickup truck but still have a long way to go
SO IN GENERAL, turbos and centrifugal SC benefit from high rearend ratio and or higher stall convertor to keep engine higher up in Rpm band where Hp N Tq really start building?
Roots type blowers make instant TQ so dont need as much rear gear or stall?
if correct those factors need to be taken into account overal for build specs and extra costs
not to mention special camshafts
Hell yeah that was really good information😊😊
Drugstore love
Boost in a bottle nitrous pressuring the intake manifold
Ready for the DART JZ build!
Would love to see a Fwd ram EFI manifold for BBC! The 90s on the center intakes look strange.
SteveMorris or Borowski Intakes?
PS: You used PSI, kPa, and Bar measurements.. hahah
id love to see a super cheap budget, old school turbo v8 or straight 6 build with a draw through carb. 😍
I've got a stock 1998 F150 with the 4.2 v6 . Have you guys ever done a build on one of these and what would you suggest to boost this setup?
which is worse on parts in an engine turbo or supercharger
Supercharger. It takes 100+ HP to spin it. That means the engine is under a higher load
The roots style blowers on Detroit diesels were just that, blowers. They were not used as a supercharger or a power adder. A two cycle diesel engine will not run without air being blown in by a blower.
Can you test those intercooler coolers? Co2 spray on front of an intercooler and I saw a video on social media there was a nozzle spraying something in the turbo inlet. What is that?
Wouldn't mind adding some boost because the Chevy 5.3L can handle it. The 6L80.....not as much. You can add a bit of power but it's not exactly the toughest transmission out there.
Don’t forget about turbine drive pressure! If you have 20PSI of exhaust pressure driving the turbine then you have 20PSI acting back on the piston and this takes power from the crank as well! No such thing as a free lunch right @GaleBanks!
The two stroke detroits needed it to run at all. With out a blower it will not run. That’s a natural aspirated two stroke Detroit, if you wanted it turbo charged you need and intercooler under the blower and a turbo on top of the blower.
what about interchillers? not intercooler, do they work and how about a dyno test under boost?
Is there a way to tell a difference between 366td vs a 427td by just the 13 digit vin?
Superchargers exist for applications where turbos don’t don’t package well. Otherwise a turbo is superior in my opinion.
👍🏻
Why never a performance 4 cylinder?.. It's been proven that they can make power and be badass...
You'd take and make 500-600 hp building a v8 and you can do it with a 4 cylinder too..but you don't.. v8 is easier but it isn't necessarily ha4d to make comparable power with half the cylinders and a DOHC setup.. and...more people are building 4 bangers these days that it wouldn't be and un-relateable build...
I just had a crazy idea.
Boosting high mileage engines like the 4.3L 262 V6 Chevy engine from the 1990’s. Or the iron duke!
Just for chits and wiggles…🤣
Why not do as Lancia did with their S4, use both 😃
22 👍's up PN thank you for sharing 🤗
is this video old or did PAT lose about 35lbs?
Man, I wish Pat wouldn’t have 17 pens in his pocket
You're the only one! Pat uses all his pens!
1.61 million views with 2 thousand likes. Are car guys just too lazy to click the like? WTH? This video doesn’t suck.
Wow, this was a mistake clicking on this video. Immediate regret lol
There are zero cons to a turbocharger if sized correctly. Not to mention anti lag has done away with any draw backs there used to be
Nitrous. Chinese power added
Chemical boost. But it's still boost
AIR DENSITY > boost
Build a 403 olds
Its only a measurement of inlet restriction 😮😮😮😅🎉😢🎉🎉🎉🎉🎉🎉
Awesome my engine makes 56 psi boost. What is your engine. Oh it Ls, what power you are making. 420hp wtf cu.nt
wtf wers is the engine did url run out of engines now days
Oh no you didn’t!