my thoughts on rb25 swap

Discuss the RB20, RB25 and RB26 series engines.
racemonkey
Posts: 20
Joined: Wed Nov 11, 2009 7:44 am

Post

Well it's been a long time since I've been here, it's been almost 2 years since I sold my s13 due to financial issues at the time. I had done an rb25 swap and always wanted to let y'all know how I had came about doing it but never had the time and eventually forgot. With me being a welder the cost of installing the motor was free, all I spent was the money for the motor and little extras here and there.

Let me start off by saying that you can absolutely use the stock ka transmission with the ka bell housing. All that needed to be done was to elongate one of the top bolt holes of the bell housing with a carbide bit and it will go right in without any other modification.

As for the motor mount all I did was weld the stock rb25 mounts straight to the frame. The motor runs so smooth that there is absolutely no vibration.
I was able to use the stock fan clutch and thick radiator by modifying the radiator support and cutting the firewall and moving the motor back 3".
As for the drive shaft, I used my ka one piece drive shaft and shortened it to make it work.
The car was a blast to drive and I wish I could of taken pictures but I had to sell it a few months after finishing it because my girlfriend was pregnant so I figured that it was best to take care of important things first and let go of my dream car. One day I'll do it again and I'll make sure I do a complete write up.


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