RB25 transmission issue

Discuss the RB20, RB25 and RB26 series engines.
sean8564
Posts: 3735
Joined: Mon Dec 27, 2004 1:08 pm
Car: 1993 Nissan GT-R V-Spec
1991 Nissan 300ZX TT Black
1993 Nissan Silvia
1990 Nissan 240SX Coupe RB25DET

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ok for some reason my Rb25 transmission will go into gear and shift gears but it will no go into netural? that is one issue and the other is A MAF issue MBTW my clutch was replaced at the time of the swap it is a cusco twin plate but i do not think the shop changed the throw out bearing. the MAF is I need to know how to wire a SII maf to A series 1 motor.


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themadscientist
Posts: 26254
Joined: Tue Nov 12, 2002 3:30 pm
Car: R32 GTR, DR30 RS Turbo, BRZ, Lunchbox, NSR50 Sportster 883 Iron
Location: Staring down at you with disdain from the spooky mountaintop castle.

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you have to pass through the neutral shifter position to change gears, wtf?It sounds like it is in the neutral position but the clutch is still engaged. I bet the TOB is too big. I always use the Pulsar RNN14 SR20DEt one on my Giken multiplates.

sean8564
Posts: 3735
Joined: Mon Dec 27, 2004 1:08 pm
Car: 1993 Nissan GT-R V-Spec
1991 Nissan 300ZX TT Black
1993 Nissan Silvia
1990 Nissan 240SX Coupe RB25DET

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well see when you start it up in netural it acts like it is in gear it rolls foward and you can not shift when driving you must be stopped and it will go into reverse.

S-13KA
Posts: 120
Joined: Mon Jan 30, 2006 12:24 pm
Car: Several

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I would say the clutch is dragging,make sure the master and slave are working ok. Rebleed them if you have to,like said above the TOB may be wrong to.

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Shocker
Posts: 2082
Joined: Sun Aug 01, 2004 2:40 pm
Car: 89 240sxHB rb26/30

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definitally sounds like the clutch is not disengageing, do what s-13KA said and make sure your slave is working properly, fully extending then retracting back in, if its not, re bleed the line, and see if it has changed. TO bearing shouldnt be the issue. as for it not shifting gears while driving, its because the transmission is under a load bc the clutch isnt disengaging and id bet it grinds if you try to change them.

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Carl H
Posts: 5985
Joined: Mon Aug 04, 2003 4:09 am
Car: 1995 Nissan 240SX SE RB30DET

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get rid of that damn bleeder box if you havent already.bleed the clutch and adjust the pedal, worst case scenario the clutch is fubard.


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