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Evo GeneralDiscuss any generalized technical Evo related topics that may not fit into the other forums.
Please do not post tech and rumor threads here.
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is my clutch good? put 400 miles on it and dealt with wonky engagement and adjustment issues due to forgetting to install the big ol starter plate spacer behind the flywheel. i dropped the trans again and threw the shim in but my clutch was looking a little worn for how low the miles are. i honestly cant tell if this looks too toasted, i'd just like to know if it looks like it's got enough life in it.
DAILY DRIVER: OEM style clutches are best for daily drivers who are looking for the longest clutch & drivetrain life. Clutch life will vary with how you drive. The torque capacity must properly chosen so that the clutch slips before parts break. More about clutches can be found on this site later. Sprung hub type clutch discs are recommended because they reduce transmission chatter from the harmonics of the engine making their way into the transmission. These harmonics will make the transmission chatter because of the backlash between the gear teeth and will wear out the gears and splines on the input shaft as well. This is why OEM clutches use sprung hub damper assemblies. However, sprung hub assemblies are not designed to cushion the drivetrain from shock loads and the damper springs can get damaged from hard clutch dumps. This is also compounded when aftermarket clutch manufactures increase the clamp load of the spring plate without doing anything to strengthen the damper assembly. To avoid damaging the sprung hub assembly one must learn the classic slip-dump method.
Also, since you have it back out, take this opportunity to go with a clutch that has a spring hub. The solid hub is a no-no for a street car.
it's an ACT street disc.. description was literally for street applications. also i was missing the starter plate/dust cover/spacer that went between the block and bellhousing. my tuner told me it looked good to him and to run it. missing that plate affected my TOB travel so i assume that's why it was wearing incorrectly.
the disc could be bent. I think my 4puck bent when my release bearing let go (pre monoloc) I cant imagine how but thats when I had clutch engagement issues. Maybe I stabbed it incorrectly
Last edited by ViciousLSD; Jun 9, 2023 at 07:56 AM.
the disc could be bent. I think my 4puck bent when my release bearing let go (pre monoloc) I cant imagine how but thats when I had clutch engagement issues. Maybe I stabbed it incorrectly
it was still grabbing fine, i was running 0 boost for break in. the engagement just always felt off, so i was constantly adjusting it. the only reason i dropped the trans was because my tuner said i needed that starter plate and it was affecting my engagement. that's when i saw the clutch, nothing looked bent or banged up but it definitely wasn't wearing properly. i think after a few miles with the starter plate in and proper adjustment it will wear right. 🤞🏼
it's an ACT street disc.. description was literally for street applications. also i was missing the starter plate/dust cover/spacer that went between the block and bellhousing. my tuner told me it looked good to him and to run it. missing that plate affected my TOB travel so i assume that's why it was wearing incorrectly.
The friction material is street, that's fine. But a solid hub beats up the synchro stops in the trans. Shouldn't be used for a street car.
