rb20 tranny doesnt clear rb25 clutch? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

brendan90zx · 10-25-2010, 03:54 PM

i bought a motor a while back and my rb25 came with a rb20 tranny.. for some reason the rb20 tranny bellhousing isnt long enough or something is wrong and wont clear the rb25 orc twinplate i bought. idk if its just me, or what.. it seems like the throwoutbearing is bottoming out not allowing the motor to seat all the way down. the tranny spins freely when it is on as far as it goes but there is still a 1/4 to 1/2 inch left to go. anybody have any ideas or solutions??im thinking maybe an aftermarket bearing isnt as tall as the stock one?

Sileighty_85 · 10-25-2010, 05:10 PM

Most aftermarket twin plates require a special TOB and sleeve .
Also make sure that both clutch plate splines are aligned

bardabe · 10-25-2010, 07:06 PM

Quote:

Originally Posted by Sileighty_85

Most aftermarket twin plates require a special TOB and sleeve .
Also make sure that both clutch plate splines are aligned

what he said. it's a fact....

brendan90zx · 10-25-2010, 10:46 PM

thanks, yeah thats what i was thinking and kind of hoping its just the throw out bearing and i dont need to get another tranny, i know its all lined up fine and slides in all the way it can, but its just not long enough, i measured from the throw out bearing to the end of the bellhousing, and it is shorter than the pilot hole is deep

10-25-2010, 03:54 PM	#1
brendan90zx Zilvia Junkie Join Date: Jun 2009 Location: fresno cali Posts: 470 Trader Rating: (11) Feedback Score: 11 reviews	rb20 tranny doesnt clear rb25 clutch? i bought a motor a while back and my rb25 came with a rb20 tranny.. for some reason the rb20 tranny bellhousing isnt long enough or something is wrong and wont clear the rb25 orc twinplate i bought. idk if its just me, or what.. it seems like the throwoutbearing is bottoming out not allowing the motor to seat all the way down. the tranny spins freely when it is on as far as it goes but there is still a 1/4 to 1/2 inch left to go. anybody have any ideas or solutions??im thinking maybe an aftermarket bearing isnt as tall as the stock one? Last edited by brendan90zx; 10-25-2010 at 03:59 PM.. Reason: add info

10-25-2010, 05:10 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Most aftermarket twin plates require a special TOB and sleeve . Also make sure that both clutch plate splines are aligned __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

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10-25-2010, 10:46 PM	#4
brendan90zx Zilvia Junkie Join Date: Jun 2009 Location: fresno cali Posts: 470 Trader Rating: (11) Feedback Score: 11 reviews	thanks, yeah thats what i was thinking and kind of hoping its just the throw out bearing and i dont need to get another tranny, i know its all lined up fine and slides in all the way it can, but its just not long enough, i measured from the throw out bearing to the end of the bellhousing, and it is shorter than the pilot hole is deep