When I was 18 built my 1st trans a C4. Back then (in the 80's) everyone said C-4 named after the explosive b/c it will explode & need a C-6. The 1st one lasted a hour, 2nd time a week, 3rd time I never broke it. I notice you don't drill any holes in the drum to evac oil. Back then was popular to drill four 3/8" holes. I did that and it welded the plates together right in line with those holes. The hole from the factory is all needed to stop centrifugal force applying the drum. I think it was drilling the drum like that was the problem and that extra hole added enough oil to keep the clutches from rubbing and overheating in 1st. I still drilled the drum, but were about .90" hole one per clutch step staggered around the drum. Never had a problem with that and never added that hole in the piston.
@SMS-wu1th4 ай бұрын
Sorry meant to say .090" hole, not .90". That be kinda big. 🙂
@BroaderPerformance4 ай бұрын
Thanks for the info. I have done various configurations of holes on the outside of the drum but I cant say it seemed to help. Another mod that is hard to prove whether it works or not.
@user-fi1nr4rf9e4 ай бұрын
Really Really good stuff!! So nice to see and hear someone speak the truth!! We need to find some way, someone to really start making this stuff here at home domestically in the GOOD OLD USA!!🇺🇸
@BroaderPerformance4 ай бұрын
Yes we do. I hope to accomplish this in the near future. I wont outsource to China like the other sell outs.
@user-fi1nr4rf9e4 ай бұрын
@@BroaderPerformance We all really need to do our best to buy and build AMERICAN AGAIN!! Everything we buy now, we used make!! And we did it better!!🙏🇺🇸🇺🇸
@meetmebattlewars945Ай бұрын
I drilled a hole at an angle through the bottom.... No pressure loss at all... No more burnt clutches... I run stock B/W cluthes
@BroaderPerformanceАй бұрын
What is the hole diameter?
@builtnotboughtgarage37624 ай бұрын
great work Jay, thank you for the fabulous information
@BroaderPerformance4 ай бұрын
You bet
@johnnyrouse27134 ай бұрын
Thank you
@BroaderPerformance4 ай бұрын
You're welcome
@chrisbukowski8654 ай бұрын
Like to see something in the future on a E4OD
@BroaderPerformance4 ай бұрын
I really dont do much with those anymore. I appreciate the suggestion.
@5pointohyeah4 ай бұрын
Good videos , Jay. Thanks for sharing. On my units I drill relief holes on the band surface in line with the middle of the band and the drive tangs to aid band apply as well as high clutch apply. How do you feel about that mod?
@BroaderPerformance4 ай бұрын
I used to do it but I didnt find any real benefit to it so I no longer bother.
@frankkoppen72814 ай бұрын
I run mostly stock C4 , with Kevlar intermediate band, stock reverse band. I seem to have most long-term trouble with the forward clutch pack. No trans-brake streetcar 425hp 4500stall . At that power level it will need clutches after 3 summers. Years ago when I was at 600hp I could get through the summer but was weak for sure .What's your opinion at what i should look at next time I'm in it.?
@BroaderPerformance4 ай бұрын
Is the disc spring getting bent over broken?
@frankkoppen72814 ай бұрын
@@BroaderPerformance no, never had that problem, I've heard of it. Never happened in any C4 in 35 years of mine. A friend has ..
@blueblood764 ай бұрын
Oh man my JPT drum looks like it has 4 .200 holes in that drum from old pics i'm looking at now,
@BroaderPerformance4 ай бұрын
Its fine. Wont cause any problems if its just drain holes in the band area.