3sgte clutch kit on a 5sfte????, yes, also detailed info for swappers with the s54 tranny Options

[presure2]

hey guys, as most of you know, i've been running a ACT stage 1 5sfe clutch since i swapped in arts motor back in the day, it has performed great for me over the past few years, with no issues, however, its starting to get some miles on it, and since i have been over the torque rating pretty much since the day i turboed, i cant expect it to last forever.
the problem begins with the fact that even the higher rated ACT clutches (and most 5s clutches for that matter) is that theyre only rated for 350ftlbs at the flywheel, and with 275ftlbs at the wheels, im pretty close to being over even THAT rating.


so after a bit of research, i came up with this info.

the 3sgte friction surface area is 236mm, the 5s is 225mm.
the stock 185 flywheel will not bolt to a 5sfe crank, without elongating the bolt holes a fraction of an inch. guys who build strokers with the 5s crank run into this problem.

the solution can be had in a few ways, either elongate the bolt holes on the 185 flywheel, or use a st-165 flywheel, which will bolt to the 5s crank, however the friction surface is 225mm, like the 5s, which i am trying to get away from.
the fidanza light weight flyhweel for the 3sgte has elongated bolt holes from the factory, specificly for the stroker guys, who use the 5s crank.

SO, what i am going to do, is use the fidanza 3s LW flywheel, 3sgte pressure plate and disk, and the disk will have the s54 spline count.

ACT makes a disk for just this application, and has a part # available for it.

here is a list of the parts that are needed, this list will work for 5sfte guys that are looking for 300+ftlbs at the wheels, as well as 3sgte swap guys that want to use the S54 (stock GT) transmission.

it is a 6 puck, sprung hub disk, with theyre heavy duty pressure plate, rated at 499 ftlbs. at the flywheel. (theyre street disk is rated for 350ftlbs, they dont do that with the 5s spline)

for the 5sfte and 5s based stroker guys, you need a st-165 flywheel, or fidanza lightweight flywheel for the 3sgte (swap guys, the flywheel is an option)

ACT pressure plate PT # TO23
ACT 6 puck sprung disk PT# 6236216
i always recommend a OEM throwout bearing, but the ACT PT# is
ACT throw out bearing PT# RB442
ACT alignment tool PT# AT17

ill post pics of the flywheel when it comes in, it should be here monday, for now, here are a couple of pics of the clutch setup (this is jims clutch, but it is the same disk and pressure plate, just diffrent spline count.)



ignore the spec disk, ill edit in an actual pic of my disk when it gets here.



woot for 500ftlbs worth of clutch!

[presure2]

hey guys, back for an update on the competition clutch.

after some investigation, it turns out that this clutch setup that i am currently running consits of a 3sgte pressure plate, and 5sfe disk.
i didnt realize it at the time, but its obvious when you look at the pics above of the disk sitting on the flywheel.
the disk is ~10mm smaller than the flywheel, and pressure plate friction surface.
it shouldnt be like that.
a 3s disk would run right to the edge of the PP and flywheel.
I cant and dont want to put the blame on tweak, he has these drop shipped for him direct from competition clutch, but it is a bit dissapointing to have figured this out a couple months after the clutch has been installed.
on a good note, the clutch is holding 330ft lbs at the wheels without a problem, which is over 400ftlbs at the crank.
lets hope i can get a good couple of years outta this disk.
for you guys that order one of these setups in the future, i would contact your manufacturer directly, and be VERY clear about what you want.

[Dr_Tweak]

hey guys, back for an update on the competition clutch.

after some investigation, it turns out that this clutch setup that i am currently running consits of a 3sgte pressure plate, and 5sfe disk.
i didnt realize it at the time, but its obvious when you look at the pics above of the disk sitting on the flywheel.
the disk is ~10mm smaller than the flywheel, and pressure plate friction surface.
it shouldnt be like that.
a 3s disk would run right to the edge of the PP and flywheel.
I cant and dont want to put the blame on tweak, he has these drop shipped for him direct from competition clutch, but it is a bit dissapointing to have figured this out a couple months after the clutch has been installed.
on a good note, the clutch is holding 330ft lbs at the wheels without a problem, which is over 400ftlbs at the crank.
lets hope i can get a good couple of years outta this disk.
for you guys that order one of these setups in the future, i would contact your manufacturer directly, and be VERY clear about what you want.

Hey Manny,

Someone just pointed this post out to me via PM. You should have contacted me if this was really the case. Here is the actual email that I sent to CC when I ordered your clutch kit, dated 2-16:

"Please ship one stage 4 clutch kit (3SGTE pressure plate and disc,
5SFE hub, bearing and alignment tool) to:

Manny
****address edited*****

I need this to arrive NO LATER than this Friday, 2-20-09, please ship
accordingly. Also please send me the tracking number information as
soon as it has been shipped. Thank you!

-Doc"

Looking at the pics you posted, that looks normal to me, are you 100% certain that you didn't get a 3SGTE disc? I mean, did you actually measure it?

-Doc

This post has been edited by Dr_Tweak: Jul 30, 2009 - 9:44 PM