simple rb26 question
#1
simple rb26 question
just double checkin to put the rb26 into a s13 does the rb25 tranns bolt right to the rb26 or does the bell housing need to be modified? also i've been hearing that some ppl are makin like 350hp on the stock rb26 wit the rb25 tranns. tkx
#7
The 26 is a pull type clutch. The stock engine setup will support 400+whp WITH proper management. Stock injectors are 440cc's and the stock turbos can support in the neighborhood of 500whp. Everything bolts together, but to get it in to a s chassis it takes a good bit of "bash to fit" with a 25 tranny. It's not as bad with a 20 tranny.
#11
My 20 has been really good to to me. I have'nt had any major issues with it. At 18 pounds, it's a stout car to measure up to. I'm going LS1 if i suffer from catastrophic failure. If it last a year or so, I'm going to stroke it to 2.4L.
#13
the RB20 tranny and RB25 tranny are the same.. depending. the RB20 used the 71C 5 speed variant as did the RB25... depending if it has hicas or not. some RB25's used the 71C (same as 240, silvia, etc) and some used the larger based 300ZX tranny. bith fit fine, and no beating is necessary. that is only done by thoise who have no patience to do it properly and take their time. use the RB25 flywheel, clutch, and oil pan. you can use the RB26 oilpan, but it requires fabrication and welding to make fit.
#14
With the "300zx" based tranny you have to beat in the fire wall at the base of it. If you don't the drivetrain won't sit straight, the problem is the area on the tranny were the starter is located. Same with the 20 tranny, but not nearly as bad. All of my info applies to a rb swap using a mount kit, I've never done a swap using a skyline/cefiro crossmember.
Last edited by Burger; 04-18-2007 at 08:25 AM.