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Help Installing Rb25 Turbo On Rb20

replicate

By replicate,
in Engines & Forced Induction

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replicate Community Regular

replicate

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Guys

I've just put an RB25 turbo on my RB20. Though i've run into two problems:

The first is the line to the actuator. On the RB20 turbo there is a spot to connect a hose on the comp cover that ran to the actuator. On the RB25 turbo it is not there, its plugged in. So what do i connect the hose from the actuator to?

My other problem is the outlet from the turbo. The RB25 outlet is bigger and the holes don't match up. Is it possible and as easy as getting that part from an RB25? The part that is a litle 90 deg bend. Or will the other end be too large to fit into the rubber section of the pipe work?

Cheers

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TTT Grand Master

TTT

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Posted

1.) you can take the compressor cover of the turbo off and drill and tap a nipple to where the rb20 one is.

or do like the R33's and drill and tap a niple in to the intercooler pipe that goes from turbo to intercooler.

2.) you need to buy the first piece of intercooler pipe from an R33 (commonly refered to as the elbow)

or you need to drill the holes out on the rb20 one to match the rb25 turbo.

be careful.

they need to be drilled out all the way to the edge without breaking through.

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