Hunter Posted April 25, 2010 Posted April 25, 2010 I have the opportunity to buy a RB20 plenum to suit my RB25. The radiator outlet faces forward intead of out at 45 degrees. which I do not think will be a problem. But do the bolt holes and size of the ports match? Quote
ScottyB Posted April 25, 2010 Posted April 25, 2010 no. you cannot interchange RB20 and RB25 plenums without an adaptor, like an adaptor for RB26 Plenums on 25's etc. Quote
Hunter Posted April 25, 2010 Author Posted April 25, 2010 ok thanks for that. do you know where you can purchase these adaptors from? or have a picture of one? I think I will be better off buying a plenum for an RB25 anyway. Quote
ScottyB Posted April 25, 2010 Posted April 25, 2010 until I got to the 3rd line I was about to suggest that. If you're looking at the one on SAU by chance? looks pretty average. Definitely recommend an RB25 one, even if it's a knock of Greddy one or something? They come up all of the time on fleabay, RB25 gear that is. Quote
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