Over the shoulder view of porting a Harley Davidson Twin-Cam cylinder head
ฝัง
- เผยแพร่เมื่อ 29 ธ.ค. 2014
- Short-Block Charlie describes step by step porting a Scotsman's head.
-Hello we are Short-Block Charlie’s. One of the biggest motorcycle machine shops in the United States, located at 2015 E 5th Street Tempe, Arizona 85281
-WE SPECIALIZE IN BOREJOBS, CYLINDER HEADS, ISOTROPIC TECHNIQUES, SLEEVE JOBS, LIST GOES ON & ON.
-Business Phone: 480-282-3472
Email for Inquiries: sbcharlie@gmail.com
Websites for the Shop-
www.pro1racingheads.com
www.motorcyclemachine.com - วิทยาศาสตร์และเทคโนโลยี
ALL my videos now have the same description click the links in the description if you need work or info done click on the websites- motorcyclemachine.com and pro1racingheads.com
Nice craftsmanship, thanks for the video!!!
Love your work.
I always have better luck using stones on cast iron heads and carbide on aluminum , i never saw anybody use their leg to hold a head i bought an audie technologys flow bench set up about 25 years back i use to flow my work after and even everything up my best set of heads made almost 200hp on a v twin no turbo, reworked mikuni hsr48 with small fuel pump running at 3psi . Always love seeing other people work i like to take a little bit of the best from every professional porter i see and use bits from each of them.
Old School Masterpiece👊
Master, sensational! A big hug from Brazil.
Nice to see you using a Foredom. I have been porting Japanese bike heads for years and have 3, foot controlled Foredoms. They are high torque and work great at low speeds. Great control.
that was an awesome video!
Thanks for the hard work on my Ktm 450 head , best valve seets by far !
I have been hand porting heads for over 35 years its interesting to see others techniques but I never held a head on my leg lol! but its what works for him. I also use a flow bench and a newen single point valve machine for valve jobs. I now mostly use a cnc machine for the port work it saves my arms. anyone wanting to learn he sounds like me talking and working he knows whats up good video
Dick grott could I send you my heads to be ported
I'd appreciate your opinion on my question above, do consider :)
Really good stuff, thanks
Charlie did the work on my Screamin' Eagle performance heads for my 1999 FXDX. They were absolutely gorgeous when I got them back and they have performed flawlessly for many years. When I bump the engine to 117" Charlie will be my choice for the work.
Wanna sell that fxdx??? 😄
@@asamcdaniel5167 lol. I think I will hold on to it
Thanks Charlie. You always instilled creativity and confidence in your students progress. Do you remember Irie Beamin. He was head instructor for the final shop stages at MMI.
Al
I'm sure we have this knowledge in Australia I just have to find the craftsmen, sure is good to see Charlie work and explain the CSA, and all the reasoning behind opening up the inlet and combustion chamber.
i will be down under in january or february i am trying to present a porting seminar there look up charlie salibia in melbourne his brother is good at porting cheers charlie
Ream slow and make one cut. The tool expands and feels like it didn't cut the first go because it expanded with the heat. Finishing reamer cut should be the nearest size you have. Hand reaming works best or enough cutting fluid to keep everything at the spec temperature. Cold guide hot tool will be several thou over the spec on the tool. I did cylinder heads day in day out for a job, many things are counter intuitive.
I have been involved with race teams for over 30 years and one of my engineers who worked for Toyota F1 told me to imagine the air flow as fluid , what would water flow do? so the way you think is exactly the way it works , thank you for a very informative and professional video on how it should be done.
thank you
Funny when you mentioned Bo-lube...i instantly thought Boeing...as I'm sitting in,the 48 section of the new Boeing 777x right this second. Lol.
how long does it take pray tell?
thanks
Because you learned from Joe Mondello, I have confidence you know what you are doing! Glad you are sharing the knowledge!!!
he was great guy and friend, Darin Morgan is another good man to learn from
Talk about a dream job,...
Flame Propagation is the word your looking for. Also The Air Flow thru the head can swirl called Eddie Currents That with slow down the Velocity of the air fuel mix. reducing the efficiency. The Ball cutter has a Right angle to it. I would use a bench grinder to create . a radius that will reduce the likely hood of cutting thru one of the wall's.
Isn't that why most heads have a tub shaped combustion chamber now? That squish band works to increase efficiency? I'm new to all this but trying to learn. And sorry it's been 7 years lol
Anyone know what grit he uses on the sanding roll?9:10 on video.while he's sanding after initial port?GREAT JOB,GREAT VIDEO FROM ONE OF THR MASTERS.
Most use 40/80/120 for smoothing after roughing. I usually just use 80 for all cartridge roll work. Then you can put the final finish in with cross buff (a scotchbright based “bit” for you rotary tool of choice) or simply a fly lap finish. Fly lap is simply a 1/4” shaft with slit cut in the end. You cut up pieces of sandpaper in what ever grit (depends on your desired finish) about 1.5 times the diameter of the port (or whatever bore you are finishing) give a take, it’s not that critical as they will conform to the port shape. Actually longer is better to make them press out against the wall better. Spread the slit in the shaft (arbor) and place the paper in the and fly lap tool is run in your rotary tool in a stroking motion so to say. Think of it as kind of like a cylinder hone. It’s good for imparting that fine inward swirling texture you see on handported heads. Goodson, cc specialties, standard abrasives among others sell porting tools and supplies!
Oldsmobile joe ? Yeah he was a Magic man with airflow and Oldsmobile 455 heads !
Now i really wanna learn how to do this " hands on"!!
It’s not hard to do, however I would have the head mounted on a grinding bench.
Why did you hone the guides with a drill bit, ever hear of a honing stone and honing oil to get a cross hatch in the guides to hold lube.. using water in that Newen valve job machine is a joke. Never would I let this guy touch a set of heads.
What precise work. Harley people are like this.
pretty simple head
Great Video Charlie...wish I was in the Maryland area. Do you know anyone in the Scottsdale, Arizona area that you could recommend for similar work? I have 1 09 S.G. I want to improve on.....
I located in tempe az
@@ShortBlockCharlie cool man I will be reaching out
Hey there, Just a quick question, in SMALL DISPLACEMENT BIKES like 150-200cc Single cylinder, how likely it that you'll be requiring a bigger piston to properly compress that extra flow of Air/Fuel mixture provided by the polished carb and bigger Inlet port.
Because if such is the case, Porting will require bigger Piston which will be stable with aftermarket Connecting Rod which will then require aftermarket Crankshaft...
it depends on your goal. a ported head works well with a stock bore and stroke. be thing on 150-200 cc engines is keep the port velocity
@@ShortBlockCharlie Right, the port velocity is achieved, now I'm having a better flow of gasses to the cylinder.....(right now I've done these) resulting in a Higher range of RPM and top end response but decreased initial torque.
I'll go for the complete free flow exhaust system and a better carb to confirm the results which I'll be discussing here as well 😊 Many thanks for your response.
and the percentage rate of having matching intake ports, exhaust ports and combustion chambers is? I would think identical heads would be very important.
They would be pretty identical after the work is done, or should we say each other's mirror images. Hand porting may seem very unprecise, but the idea is checkingf and doing little by little. And that guy who ports has precise idea of what it should look like when it's ready.
Intake is lager on lots of custum valve jobs
Where to buy the good cutting tools that will last ?
CC specialty use boe lube for paste
does anybody port EVO heads any more?
homes.ottcommunications.com/~red/
I thought you were supposed to polish the combustion chambers as smooth as possible, to reduce the chance of knock, and carbon buildup?
thanks for comment . yes back in the day thats the way it was done. now a textured intake and combustion chamber is now the standard. if you can go to speed talk forum, they have updated information on cylinder head porting. thanks for viewing
Why not do the valve job first then blend in to that. I work in NASCAR and this is what I’ve done for the last 14 years only on cylinder heads for our engines we build. Just wondering.
More power your way but also more chance of hitting your new seat
damn that valve job takes forever,I like the Sunnen VGS120 I use where I work its much faster to cut the angles.
I really like your porting on a twin cam and I would like for you to do a set of heads for me would you consider doing that for me and how much does it cost I have a 2001 Harley road King and I have a set of 2005 heads that I would like for you to port for me to put on it I'm probably going to use a woods cam around a 576 lift can you please let me know if you are interested in doing these head's for me, thanks for your time and consideration and you have a wonderful day sir .
I can assist you on your heads. if you can you call me. 4802823472
Hello
Hey Charlie how do I get in touch with you ?
www.motorcyclemachine.com/contact
Here you go.
Charlie the last airbender. :)
You are doing great work, but the question I have is, if you can do it, why isn't Harley-Davidson doing what you are doing in the manufacturing process of their engines?
+Dennis Patrick Extra labor = extra costs :)
+Dennis Patrick The answer to your question is two-fold. One is greed. H-D can upcharge for Screaming Eagle performance parts this way. Two is that the casting process is limited and the final shaping needs to be machined. This is too expensive as a standard process.
Thanks for the answer.
It's not "greed". Most people can't afford to pay Harley to do this, so Harley doesn't. Hence the #2 reason. Enough with the "corporate greed" baloney. It's whiny and wrong.
I thought the idea was to clean up the casting flash, he's hogging out a lot of material, you can take to much off and ruin the head altogether.
He's probably taking out too much, yeah.
No, actually true porting is a lot more involved. What you are referring to is just that, a “clean up” as it’s commonly called in the performance world. It doesn’t reshape or enlarge the port significantly. It is done with cartridge rolls (sandpaper rolls that are made to screw on to a mandrel that’s is held in a rotary tool (Charlie is using a foredom brand flexible shaft rotary tool with many hands pieces that have different carbide burrs premounted in each handpiece or the aforementioned sanding roll..this is to save time by not having to switch each cutter out of a single handpiece). A clean up merely takes out the rough casting and makes the port “smooth”. Contrary to what people would think you will see very little increase in overall flow volume (cfm) or port velocity. It’s more a cheap sales tactic aimed at uneducated or inexperienced people building their engine.
A true port job involves what you see Charlie doing where he first roughs in the port with the carbide burrs. He is actually removing a relatively large amount of material from the port to produce his desired new shape/size. Once roughed in, sandpaper cartridge rolls and sometimes cross buffs (an abrasive “finishing tool” made of scotchbright that is again mounted to mandrel and used in the rotary tool) are used to smooth the roughed port walls and impart the final desired texture finish. You won’t polished ports done by professional cylinder head builders. It doesn’t work and is actual detrimental. Fuel likes to “puddle” on polished port walls. It doesn’t help to break up and atomize the fuel like a proper textured (cartridge rolled/cross buffed/fly lapped) finish port wall does.
In between the roughing and finishing stage there is guide work, flow bench testing, seat/valve job work, etc...all depending on exactly what is being done.
So you are partly correct that yes you can take out too much and ruin the head but no the idea (at least not in this case) is not to just take out the casting flash!!
Absolutely not…..by your statement alone I know you don’t know a whole lot about it. Cleaning up casting flash, is cleaning up casting flash. Not porting.
Quill in the Bridgeport needs to fully retracted. Raise the table to meet the fly cutter for rigidity....reaming the guide with a hand held drill is caveman....Head then bolted to a fixture then reamed in the machine so you will not bell mouth the guide....
He knows what he's doing....
dean neufell Caveman maybe .But he has skills that you COPY with a machine. Knowledge for me is a safer bet than a copy
So it’s a freehand thing
Interesting
I have a hard time believing you learned that technique from Joe Mondello.
Gnosis Autosports what the big deal about using the back side of a burr to cut a seat. i know that he designed burrs that does the same thing, and i use them
i bet you $100 about that the big port head came out in 2006
Typical Harley junk, they finally got into the late 90's as far as engine tech with the M8.
Daaamn the morons tearing that motor all to hell.....shame