High Performance Clutches at the PRI Show

[@jasonbeaulieu4979]

Great video as usual. I’ve used/installed clutches by almost all these companies. I really like the Mantic stuff.

[@GearBoxVideo]

I couldn't find them at the show.

[@bazookabert]

I'm glad you covered the centerforce at the end!

[@johnivkovich8655]

Great video, as a novice I enjoy watching content that informs without condescension. You seem to hit that sweet spot between informing both the beginner like myself as well as the more informed power train mechanic.

[@hddm3]

That automatic clutch looking one was pretty Awsome.

[@michaelr6205]

I always really enjoy your visits to the shows you attend and your technical explanations. Thanks.

[@JlerchTampa]

22:25 is an awesome design, It appears simple but it has subtle complexity, very cool. The whole video is full of awesome details, thank you for taking the time and putting this together!

[@videomaniac108]

Another excellent informative video Paul. The dialog between you and the McLeod representative was so interesting.

[@grantsnell6782]

Good to see some Quality American made stuff. I know how important that is to some of you guys!

[@peterd7603]

Great video, I look forward to them, good to see a new one. It is all interesting no matter what you drive.

[@dezertraider]

Thank you Paul,Been a F1 Fan for many years and the fist time I seen a moder clutch pack very very cool.Stay well.73

[@Roy_Godiksen]

Awesome video as always. Really fascinating to see all the different solutions for the different use of the clutches.💖👏

[@jamest.5001]

I like centerforce, the dual friction is the only performance clutch I use, the peddle pressure is very light, but I never slipped the clutch. The only issue is a bit of noise at idle! But I can deal with that!!!

[@tomkjr1]

Centerforce clutches work great but the street clutch I had in my 03 Cobra had a very strong pedal pressure. I went to an RXT twin disc setup by McLeod which works great and has a near stock pedal feel. Love the video!

[@NebukedNezzer]

I have replaced the cork faced clutch disc in a 50 hudson. It ran in a special oil so the pressure plate flywheel were sealed. the ONLY reason I had to change the disc was I tore out the center where the impact absorbing springs were. that clutch really worked nice and if not mistreated(no teen age driver) I bet they all lasted forever. never saw anything like that again.

[@islamhelmy8456]

I miss your videos ❤️ you're always amazing

[@SvcGlobal]

Thanks for the guide! Amazing video about modern clutch technology.

[@NebukedNezzer]

Thanks for a great video on clutches.

[@darwinfridgeseals741]

Love to see you analize a twin plate cerametalic Mantic clutch.

[@GearBoxVideo]

Mantic wasn't at the show otherwise I would have.

[@FizzaMC]

Gday from down under Paul 🇦🇺 Very interesting video (even if it’s a couple of years old) and have been getting a lot of tips and techniques from your tech videos and demonstrations. Also a big shout out for good old Holden Torana & Monaro’s of years gone by. I’m lucky enough to have an LC Torana Coupe in my workshop here in SA. Keep up the great work mate. Cheers

[@timruiter5460]

You, sir, are a wealth of information!

[@danielweinbaum]

THANKS PAUL ! A WONDERFUL TOUR AS ALWAYS ! I VERY MUCH LOOK FORWARD TO YOUR VIDEOS AS THEY ARE A WEALTH OF KNOWLEDGE! NOT STANDARD FAIR FOR ALL OTHER YOU TUBERS ! I AM JUST DYING TO SEE YOU SHOW US A NEW WITH OLD COMBO... WHICH IS MY DREAM, AND WHAT I MEAN IS ... AN " LS " DROPPED INTO A 1965 GTO HARDTOP WITH A MUNCIE M22 ROCK CRUSHER WITH A GEAR VENDORS ! I WOULD LOVE TO HEAR HOW YOU WOULD PUT THAT SETUP TOGETHER ! JUST TO HEAR THAT MUCIE WHINE WOULD BE WORTH EVERYTHING TO ME. HOW MUCH POWER CAN IT TAKE ? HOW MUCH WOULD IT COST ? WHAT ARE THE OPTIONS... ALL OF THEM !!! THANKS !

[@jamest.5001]

The act clutch flywheel do look good!

[@memphisreigns1498]

Another amazing video I love how informative your stuff is and I just wish that KZbin was around back in the early 2000s I got robbed for clutch job and apparently they didn't change a very important part and it ended up destroying the new clutch and transmission not even 5,000 km on it and I'm hard on vehicles very hard in fact there's not a car that I've owned but I haven't are there had the transmission grenade or the engine it's always one or two and if I would have had videos like this back in the day I would have done my own clutch job I would have bought clutch that was proper for my application and I would have done the install myself I unfortunately had an accident damaging my spine and I cannot do anyting like working on my car they took my license because of the injury but I love watching and learning still

[@calholli]

That formula one clutch looks like it's straight out of a sports bike. Very similar set up.

[@mikeskidmore6754]

Great Informative Video.. Must of us can't afford a Formula 1 clutch however.. I want to do an d LS Swap with a Tremec Super T-56 . I like the idea of a smaller diameter dual disc clutch for less mass at high RPM also a lighter Flywheel .. For less strain on the trans and drive terrain and faster acceleration ..

[@MikeVieira]

What a great video! Thanks for sharing. I have an RXT in my toy

[@GearBoxVideo]

Great clutch

[@jackknife76ify]

Your videos are always have so much info thanks your awesome

[@GearBoxVideo]

Appreciate you watching

[@edstransitscott9186]

Paul, you are the Man, Thanks

[@combatjm89]

That drag bike looked awesome

[@t5montecarlo]

Hi Paul- Thanks again for taking me along for the ride to PRI. I enjoyed the video and you asked all the right questions. Some of the hydraulic release bearings don't appear to have any type of method for fastening or obvious method of preventing them from rotating. What keeps those few bearing assemblies from rotating?

[@GearBoxVideo]

There are posts that replace the retainer stud that the bearing will stop against. Some actually use the fitting as a stop

[@flyonbyya]

The full carbon clutch looks like something NASA would produce!!!

[@stephenmitchell3569]

Thank You! Hayes black face pressure plate, gold face clutch with springs, gm lite weight flywheel attached to Dough Nash 5 speed. Big Block Chevy 66 Chevelle all steel with 250 hp nos work great street/strip 1985...lol,!!! I have some catching up on tech and prices...lol!!! Funny when pump gas 10.86/128.86 was wow and now times are awesome. Wonder that Chevelle delivered parts for three years before 10.86 run with tune up, oil change, added M/T slicks. Like to see more guys building motor and drive line that last at least a year of racing and riding! But to each their own, use to hear I'm going beat your when I repair "that hole in side of block" lol! Good video! From Georgia and old has been finishing past hot rod. Plain Jane but matched up with mostly old new stuff other let collect dust. Worst design I'm 67 and car full cage Corvette 78 at that...lol! Now car faster in 1/4 that I can fasten my helmet..lol!

[@jocrp6]

Love the vid's paul,, But i just so happen to be in the crowd that dont think to much of the weights on the diaphragm clutches,,, Every time I get a hotrod in the shop i make it a point to run it up on the lift and watch inside the bell housing,, always the weights are off to one side while running and revving,, Would use a timing light for the rev up part.

[@GearBoxVideo]

If that would be the case, you'd have a nasty vibration. Never had any issue with them. The weights do work. Often times other imbalances will cause the weights to be off.

[@tombogan8326]

A question regarding dual/triple disc clutches vs single- It seems that some release issues can be related to the multiple disc versions not letting go. Is it also likely that a multi-disc will have considerably MORE mass to change input speed on the input shaft? That would make it harder for the synchronizer to work. It seems that the most IDEAL set up would be a single disc that is as small/lightweight that will still hold up to the torque/power requirements. This would shift easier due to less rotational mass? Thoughts?

[@GearBoxVideo]

Leveraged inertia. 20 lbs spinning outboard 10 inches has a different effect than 20 lbs spinning centered.

[@blow0me]

moment of inertia, hence why most multi plate clutches are smaller diameter. But larger diameter offers the user more feel/control over engagement. Everything is a compromise

[@p0intdk]

I have a few questions that you maybe could put into your next video, if you are running a real race transmission, like a straigt-cut dogbox can you just use a single plate clutch or do you have to use some sort of multi-plate clutch setup?

[@GearBoxVideo]

Really depends on the horsepower. Lots of people run single discs with dog ring boxes

[@RobertKohut]

Nice!! Awesome actually... :-) Very interesting.

[@drubradley8821]

Great video again!!! At 24 minutes, the ATS corvette clutch, do you are anybody have any info upon proper break-in methods for such an assembly. Heck, for any multi-pack-clutch for that matter? Just curious. I have heard several methods, like, install the new unit, and break it in how you intend to race it, meaning, no break-in, as per street driven and occasional weekends at the face track... and of course a plethora of methods for daily driven clutches, each having a time frame of mileage before one can assume it is seated well into its own grooves.... Top fuel drag clutches is a whole other mindset of theories, which do not apply to my question, as I do not have a top fuel, lol, do you think I'm made of money, lol... Some of those clutches cost more then my entire rig, lol... Anyhow, another great video, and again, I learned several things... Thank you for taking the time to share this video, and all the expenses to go to this event, thank you. Dru

[@GearBoxVideo]

Each manufacturer usually specifies their own break in procedure. Alot has to do with the surface finish of the flywheel and pressure plate. Some companies will purposely put what appears to be vinyl record raised grooves in the pressure plate to seat the disc faster.

[@drubradley8821]

@@GearBoxVideo oh, no way, that just means I am an idiot, I always thought that those rough lathe lines were just crappy machining, as if they were in a hurry.. But that makes so much sense, to allow the peaks to wear in, or down, for the seating purposes, and faster as well... That makes so much sense... Thank you!!! Dru

[@ray5961]

Great video, thanks for taking the time to produce and publish it! Just wondering if you have had any first hand experience with California Clutch or know anything about them and their products? I am looking into their Kevlar disc for use on a street car and so far the company seems pretty nice based on what I have seen. Any experience with their products?

[@GearBoxVideo]

I really don't. There is a company in California called clutchnet that has some interesting design ideas

[@PaulCTownsend]

Thank you

[@donogoobo9992]

LOL, People been pushing those dual friction clutches for years. One side is organic an the other side is full metallic. An attempt to make an aggressive clutch that engages like a street clutch. RESULT: The first time you drop the hammer with big slicks and prepped asphalt WILL shear off all the rivets on the organic side and it will kill the pressure plate (excuse me...clutch cover) or flywheel contact service. (Been there done that)

[@GearBoxVideo]

I have sold many dual friction clutches from various manufacturers. I can honestly say with Centerforce which we have sold close to 1000 sets, I have never seen an issue. Some have full metallic pucks, others kevler. What I can tell you is that they do wear faster because the puck side as less surface area. I don't like them for street applications because they can chatter.

[@donogoobo9992]

@@GearBoxVideo Interesting that you replied. The first metallic/organic disk I used was a Centerforce. Granted, I was using it way out of it's class, but it was a 610 bigblock, 65 mustang Gasser, 9" rear/4.30 gear. slicks had a 14" wide contact area on a 12" wheel. In just a test launch before leaving for the track, the car moved about 2 feet, then engine was on rev limiter. I thought "driveshaft" as it was so sudden. On disassembly, it was the flywheel side friction pulled loose in one piece. I replaced it with a 3 finger ceramic button disk which worked flawlessly for years, just a flywheel resurface and a couple of B&B covers. Memory fails me as to part number, but Centerforce said it was their highest rated street clutch (at that time)

[@maldo72]

Great video and the tech talk I love shit like this. ... one gear head to anther lol

[@dielauwen]

Check out the band "Clutch"

[@GearBoxVideo]

Know the band quite well

[@andypratt1158]

I have a low rpm chatter coming through my centerforce clutch that feels like the weights contactibg the throwout bearing...or am i insane?

[@GearBoxVideo]

Chatter isn't caused by the weights. People are quick to blame the weights for any abnormal clutch operation they get. Basically weights aren't even close to the release bearing. Any flywheel balance issue can make the weights chatter. People cut wheels often, buy cheap flywheels and I see this happen often. Alloy wheels often times can cause low rpm noise as well. See my explanation in my clutch video.

[@andrewpratt1828]

GearBoxVideo the only mods made were removed the t5....replaced the 10spline friction disk with a 26 spline and a bell housing....and put a tko600 in....flywheel pressure plate and throwout bearing were not replaced and virtually new

[@GIGABACHI]

6:08 DUCATI Owners would rejoice just at the thought.

[@4speed3pedals]

Is anyone manufacturing a Borg & Beck style high performance clutch?

[@GearBoxVideo]

Most of these companies do sell them

[@4speed3pedals]

@@GearBoxVideo I have looked online and the only thing I have found are diaphragm clutches and exotic unobtanium units. Do you know a specific company? My issue with diaphragm clutches is the possibility of the pedal staying on the floor over 7,000 rpm.

[@tripleblackcuda8876]

Hi, New subscriber Love what you do but are you able to do some vid's on mopar A833 box, and maybe a comparison with the Passon Performance 5 speed box?

[@GearBoxVideo]

I don't have access to any of these transmissions...

[@johnsweda2999]

The type of wet clutch setup you looked at do you know what the discs are made from...? And what sizes do they come in any idea.

[@HalferLandPerformance]

Love the detail in the videos! I try to be as detailed on mine (Videos), however I have an issue with a dirty mouth 😂 Thanks so much for solid vids! Need to partner with one of these companies for our Honda J-Series motors

[@someRandomUserAccount]

how about a video about the Ford mazda m5r2 r1 tranny lots of them top loaders out there I'm Shure people would be interested

[@GearBoxVideo]

Please see www.5speeds.com/requests.html

[@shaadydog1]

Ya, Tilton triple double nickel...

[@NebukedNezzer]

I have avoided the concentric clutch throwout/slave cylinder like the plague because they fail from heat so you have to tear apart the whole assembly to get the transmission out and change it. My question is. Is there such a thing as a concentric slave cylinder/throwout bearing that will actually stand up for 20+years inside that hot bell housing?

[@ColtaineCrows]

I only know of one, the one that came in 1997-2000 Volvo V70's with the 2.5D(D5252T, modified from the VAG 2.5TDI) and probably the S80 of similar years. Mind the only one I know of that has had much use has had it replaced because the dual mass flywheel started behaving twitchy/jerky in cold weather, still it had around 632 000 km on it. Release bearing was still perfect but got replaced because it's silly to not do it while the transmission is out anyway. Could still feel the machining marks in the flywheel and the clutch they put in had less friction material on it than the old one! Not used for racing, but still impressive. He had the clutch replaced at around 130k km because of the same issue, car has currently ran north of 850k km and still going strong, although that old diesel is not very happy about cold weather any more and has developed a very very slight knocking sound at idle.

[@DougHanchard]

I've been using hydraulic throwout bearings for 25 years in circle track applications and never had the problems you've described. The key is matching components and bellhousing alignment, which is critical for long lasting performance. Slave cylinders do have some drawbacks including the risk of uneven pressure applied to the fork. Again, the number one culprit is block, bellhousing and transmission input shaft alignment. I've run up to 40 races without teardown and inspection in a single season without failure or alignment risk. The majority of failures are caused by not doing a nut and bolt check if the bellhousing and clutch diaphragm bolts in addition to the transmission to bellhousing bolts. High quality hydraulic fluid will reduce almost all risk of fluid and seal failures. I've had throwout bearing seals last 2 seasons (80 races). Most are replaced annually or every 2,000 laps if ambient temperatures average above 100F. NASCAR Cup engine Tri-Lite transmission bearings are beat the crap out of and I've never seen one fail if properly assembled and aligned.

[@calholli]

There is no point because you have to change the clutch plates before then. Just upgrade your slave while you're there if you are that worried about it.

[@danielweinbaum]

BAD ASS VIDEO ! I JUST WISH THAT I HAD SOMETHING TO PUT ONE OF THOSE CLUTCHES INTO !!! I WILL MOST LIKELY BE MOVING TO YOUR AREA IN A YEAR OR 2. I REALLY ENJOYED OUR LITTLE GET TOGETHER WHEN I LAST VISITED FLORIDA, DURING THE HOLIDAY BREAK ! MY SURPRISE VISIT !!! I WOULD LOVE TO HAVE YOU HELP ME PUT TOGETHER A STREET CAR PROJECT... TIME WILL TELL. I HOPE BUSINESS IS GOOD FOR YOU... YOU REALLY WORK YOUR ASS OFF !!! WHEN I GET CLOSER TO MY MOVE WE CAN TALK ABOUT A PROJECT. ANY CHANCE YOU'D LET GO OF ONE OF THOSE "BASSMAN ?"

[@GearBoxVideo]

Yes it was great seeing you as well. Currently I'm not selling any of my audio and Music gear

[@R.E.HILL_]

Blurring your own jacket, what's up with that? Btw.. No launch control in formula 1 anymore, strictly forbidden. Cool video, thx for sharing.

[@ColtaineCrows]

Probably had some documents in his pocket with something on it that the world doesn't need to know.

[@grslms51]

this stuff is great..all you need is cubic money....forget the wife and kids...the hell with the house.....my Mustang or Corvette is the SHIT

[@CarlCostelloPlays]

🙂

[@metkauturbomechanika]

skrzynie biegów typowo do dużych mocy nie seryjne

[@robertklein1316]

Paul, it looked like you really enjoyed the show, but basically what is new besides the manufacturing & materials, just the same old, same old. I bet that F1 set-up has a hi-tec release if they have launch control with multi disc clutch pack. The present & future is drive by wire, as you can buy a cheap(sic) vehicle today that has a dual clutch trans. with 6-8 speeds.

[@GearBoxVideo]

I know Tremec has a new DCT but at the show the same manufacturers are there and this show is basically a Motorsports show not necessarily a technology show

[@blow0me]

@@GearBoxVideo DBW has little to do with DCT, and DBW is very old tech now. But DCT will play heavily in the future, if the aftermarket will get their finger out and start offering standalone controllers for them.