Turbocharger crossreference numbers?

JDemaris

Well-known Member
Anybody know of a cross-reference database for turbochargers?

I recently put a turbo on a 379 c.i. diesel V8 and can't get boost above 4-5 PSI. So, I'm wondering if the turbo is sized wrong for the system. Max boost ought to be 8-10 PSI.

The turbo looks fine. Shaft is tight and impellers look perfect. It was part of some sort of kit made by Banks Engineering, but their tech guys can't help (I tried). Seems they lack records for some of their older stuff.

The turbo company is no longer in business. It is a Rayjay Rotomaster model 3AA1EE10B1.

I do know that later Banks used a Garret T04B for the system.

I'm trying to find out if these two turbos are equivalent to each other.

All I've been able to find is some old data showing my Rajay being used in turbo kits for Chevy 350 engines.
 
You most likely have the wrong A/R ratio intake and exhaust housings on the turbo for your engine. I put a TO-4 on a 225 slant six. When I go the right housing I got the 20 PSI/40 inches of mercury boost I was looking for.

Kent
 
That's exactly what I'm trying to find out. I know what the A/R ratio is on this Rajay turbo, but I do NOT know what it is on the Garret T04B that was usually used on this system. That's why I was hoping to find a way to compare by using part #s.

This Rajay is supposed to have an A/R of .8

I know that it was sometimes used on 350 gas engines in a single version, and also in a twin-turbo version on 350 gas engines on boats (as Mercruiser 260s)
 

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