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Help Needed Rb20 Piping With Top Mount

Bsa

By Bsa,
in Fabrication

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Bsa Mentor

Bsa

Posted
Posted

Hi every one I'm looking for answers on intercooler piping for a rb20 with a top mount turbo. Will I need a front facing plumum or is there any other way. I can make the plenum that's no worries but I would like to keep the stock item as it would have no worries with my power needs.

Rowdy Collaborator

Rowdy

Posted
Posted

your stock cooler pipng (crossover pipe) will be directly where your high mount turbo will sit. so you'll need some custom piping. check out roys crossover pipe in the build up forum, but of course something like that will only work if you have a front mount...

Bsa Mentor

Bsa

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Posted

Hey guys sorry for not replying sooner I tried the piping that way and wasn't really happy with it so I tool it to myself to make a plenum and I'm hoping it will work what I did was remove top half of the stock plenum and blocked it off and filled it with water to c how many liters of water it held then I fabricated a plenum to the same size and capacity being a fabricator myself was easy. The plenum is made from 3 mm ally with a 6 mm base to connect to the bottom runners it holds 4.1 liters a bit more then stock but if to big I'll just make it smaller best part of the plenum I can still use stock accelerator cable and most of the fittings. Now my only thing I'm wondering about the air regulator is it needed or can I just get rid of it? I'll post a photo of how it looks. The car is going on the dyno soon just need the new fuel pump which is coming on tuesday and tell you if I lost or made power. Before the plenum and top mount the car made 187 kw with 12.5 pound with a rb20 exhaust housing and vg30 compressor wheel and housing please let me know about the regulator

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