Whats My Gt3040 Capable Of?

[VLT020]

i did a search but couldnt really find an answer

just wondering what specs my garret gt3040 is.

brought it second hand, basically new tho.

the garret plate says

700177-5014

has a .63 rear housing, external gate.

.70 comp cover

what this capable of on an rb20 with microtech, fuel system, 38mm gate, eboost2 etc

any info would be great cheers

Edited April 16, 2006 by VLT020

[discopotato03]

Probably going to be fairly laggy . GT40 large trim compressor is not the GT30 turbines best friend . I would resell it and go for less compressor next time . A GT3037 52T or propper GT3071R (cartridge no 700177-23) are much better GT30 turbine based turbos for the smallest capacity RB six .

Sorry to say it but GT3040R's are a bad mismatch of compressor to turbine especially the Garrett marketed 700177-14 cartridge because it uses a larger trim compressor than the similar 700177-9 HKS GT3040R ie 56 vs 50 trim . I was just reading today some posts from US sites about some wanting to use them in .63 turbine housing form on high performance Hondas . They are not common in the US and most people in the know can't understand why they were made in the first place , they are not optimal on anything . There's nothing they can do that the real GT30R can't do better and even it would be a bit laggy on a sedately driven street RB20 or 25 . I reckon the GT3071R modified with the 52 trim compressor like the 2871R 52T uses would be quite good . PM me if you want to know how to go about it without spending way too much .

Cheers Adrian .

[VLT020]

thanks for that. will it still pull good top end power? not too fussed about lag

[discopotato03]

That will depend on what feels good to you , that 63 housing may make it surge a bit .

Cheers A .

[R31Nismoid]

I agree with Disco, as usual... the turbo wasnt too bad on my RB25... 4200rpm around 15psi.

On the RB20 it would be late 4000's even with the .63

I would also be of the inclination to sell it to someone with a bigger motor.

And get something a little smaller for the RB20... it will make it faster and a far better performer on the street and on the strip.

[Tex Willer]

They work well on single turbo converted VG30DETT`s

Not many of them, thou

[VLT020]

im planning on building a 3L with a 25 head for when the rb20 gives way. so will it be worth keeping for this

[discopotato03]

Thats going to depend on your finincial situation . If it was rebuilt with the GT35 turbine - technically making it a GT3540R it would be ok for an RB30 .