RB25DET rebuild

Discuss the RB20, RB25 and RB26 series engines.
s14_sport
Posts: 1852
Joined: Mon Nov 14, 2005 2:01 pm

Post

ok so i decided to rebuild.

got low compression on cyl 2 & 5. below 50 on both and all the other were between 145-160. Leakdown test performed and got the compression to pretty much double on 2 & 5 so I'm pretty sure rings. So I'm diving into it this weekend. I have a spare RB that I'm building up and this one in my car with the low compression needs to be up quickly with just minimal parts.

I just planned on replacing all the rings and the head gasket. Is there anything else I should look into replacing while I'm at it?


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

Post

bearings since you're in there...

s13point5
Posts: 411
Joined: Fri Mar 03, 2006 9:59 am
Car: 89 240sx

Post

bearings and all your gaskets.

User avatar
Coolwhip
Vendor
Posts: 3138
Joined: Fri Feb 06, 2004 7:29 am
Car: RB26 Raw Brokerage War Machine
Location: Orlando, FL
Contact:

Post

Valve stem seals

Rod bolts are an inexpensive part to toss on there as well

ItzGenX
Posts: 1204
Joined: Wed Sep 04, 2002 7:46 pm
Car: Smoke Purple 95' S14.5. Powered by the "Iron Man".
Location: Gulfport, MS
Contact:

Post

Just hope that it isn't a cracked ring land or something.

s14_sport
Posts: 1852
Joined: Mon Nov 14, 2005 2:01 pm

Post

well yes, lets hope its not that...lol

so far im replacing:

piston rings, all gaskets,bearings


Return to “RB20DET / RB25DET / RB26DETT Forum”