Char Posted November 12, 2010 Share Posted November 12, 2010 my car is at the workshop and the rb25/20 clutch master cylinder that i have in my car is way to long. its an R32 with a Greddy plenum. ive rang about 4 places today and they couldnt give me any answers.. one bloke told me to look into a datsun 1600 clutch master cylinder but he's never tried it. the shop measured a 180sx clutch master cylinder n that MIGHT be short enough but the only one i could source was from autoone and it was 9.5cm -too long. nissan couldnt give me lengths just part numbers. anyone know what i can use? need help asap cheers! Link to comment https://www.sau.com.au/forums/topic/344045-clutch-master-cylinder-hitting-plenum/ Share on other sites More sharing options...
bubba Posted November 12, 2010 Share Posted November 12, 2010 33gtst, have to modify the shaft though, IIRC need to shorten it by about 10mm Link to comment https://www.sau.com.au/forums/topic/344045-clutch-master-cylinder-hitting-plenum/#findComment-5546182 Share on other sites More sharing options...
adamhr33 Posted November 13, 2010 Share Posted November 13, 2010 i had the same problem with my build 25/30 into 180sx, i ended up using a s14 clutch mastercylinder, and had to chop the back out of the greddy plenum to get it to fit. Link to comment https://www.sau.com.au/forums/topic/344045-clutch-master-cylinder-hitting-plenum/#findComment-5547237 Share on other sites More sharing options...
GT32 Posted November 13, 2010 Share Posted November 13, 2010 (edited) My mechanic had to shave the rear of my GReddy plenum to make it all fit. Didn't affect the tune or performance at all though which was good. But we later found out that an R33 GTS-t Clutch Master Cylinder would've done the trick. Oh well... Edited November 13, 2010 by GT32 Link to comment https://www.sau.com.au/forums/topic/344045-clutch-master-cylinder-hitting-plenum/#findComment-5547333 Share on other sites More sharing options...
works 510 Posted November 13, 2010 Share Posted November 13, 2010 I used a r33 clutch master, no inlet manifold grinding needed. Link to comment https://www.sau.com.au/forums/topic/344045-clutch-master-cylinder-hitting-plenum/#findComment-5548165 Share on other sites More sharing options...
Char Posted December 3, 2010 Author Share Posted December 3, 2010 thanks for the info! we used an R33 GTST clutch master and it fitted perfect! its half the size of an rb20det one -tho they did have to fiddle a bit to get it in i believe an engine crane was used to lift the engine out of the way first Link to comment https://www.sau.com.au/forums/topic/344045-clutch-master-cylinder-hitting-plenum/#findComment-5578109 Share on other sites More sharing options...
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