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View Full Version : RB25 MAIN/RODS torque specs!!


DRiFT Starz
04-21-2013, 12:33 PM
IN NEED OF SERIOUS HELP!!! ive googled this a million times, i find different values everywhere i look, there used to be this nicco page but it gives out an error now (doesnt open).

What i need is the values for torque of the main and rod. Im using acl bearings (it did not come with these values in the manual)

I have found some values that also require some amount of degree (angle wrench) is it possible to convert this degree in lbs?

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[had this rb putting out 365whp on stock internals never opened it for 160k+ run, time for refresh before it breaks so that is why im here. PS RB's are awesome]

GroundPerformance
04-21-2013, 01:37 PM
http://www.skyline.se/dokument/R33_All_Engine_Manual.pdf

GroundPerformance
04-21-2013, 01:38 PM
Service Manual is the best resource only took seconds to find on Google.

DRiFT Starz
04-21-2013, 01:56 PM
i gave this, ther eis only 26's torque specs and they dont refere them for 25's in this manual that is, i dont know if they are the same. if so is there a way to convert the "+ angle degree" to lbs?

zerodameaon
04-21-2013, 02:04 PM
You go to the rated torque specs then go another 50* if thats what it calls for. You are going to need a angle wrench, don't just guess. Go buy the tools to rebuild your engine the right way, you will be happy you did.

DRiFT Starz
04-21-2013, 02:07 PM
alright, but what about the rb26 specs in the manual? are they the same for rb25's?

zerodameaon
04-21-2013, 02:08 PM
I can't remember, go look at Nico for the RB25 engine FSM. Its in japanese and everything is in nm but its for the RB25.

DRiFT Starz
04-21-2013, 04:09 PM
Unable to find that japanese version you are refering to... all fsm on niko are down!! there are non.... googled my ass of i only get the engine servisce manual pdf whitch gives only the rb26 specs

zerodameaon
04-21-2013, 05:21 PM
Strange, they are down in all the normal places.

Just called a buddy, he reminded me all RBs use the same main cap torque specs.
http://i224.photobucket.com/albums/dd251/JonnoHR31/Maincap.jpg

Also are you using OEM hardware or ARP hardware?

DRiFT Starz
05-18-2013, 11:15 PM
ACL Bearings ARP heads, oem bottoms