RB25DET Transmission to Engine Bolt Torque Spec

Discuss the RB20, RB25 and RB26 series engines.
Got PSI
Posts: 4
Joined: Wed Oct 14, 2009 9:52 am
Car: 98' Nissan 240sx
Location: Augusta, Ga

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Hey guys, I'm mounting the transmission to the engine and I haven't been able to find the torque spec for the top 4 bolts that screw into the block, and the bottom 4 that connect the bracket to both. I've done a search, but couldn't find anything...and I don't see it on the FSM. If I've missed something please point me in the right direction...thanks in advance.


240z4u
Posts: 2071
Joined: Mon Feb 21, 2005 4:47 am
Car: '95 Nissan 240SX

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Tight. :)

Here's a good reference for you. I torque those by feel. http://www.dansmc.com/torque_chart.htm

Got PSI
Posts: 4
Joined: Wed Oct 14, 2009 9:52 am
Car: 98' Nissan 240sx
Location: Augusta, Ga

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Works for me, thanks

Bigfootguy
Posts: 60
Joined: Sun Feb 24, 2013 5:00 pm
Car: 1990 glacier white pearl 300zx: my new girl
1995 240sx with rb25 (build in progress) SOLD
1990 f-150:DD
Location: 3zero2

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I just go tight as I can with a socket set n call it a day

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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^that's probably a little too tight depending how strong you are ;) it's not as tight as you might think.

the tq spec for the transmission bolts is in the r32 gtr manual for the 26. either way, they're the same bolts (m8x1.5 iirc) and the FSM says 29-36 ft-lbs. basically lines up with what 240z4u's link showed.


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