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Hey guys,

I'm looking at the gtx2860r for a turbo upgrade. Now I know it needs custom piping ext.

But using the Garrett boost app it sends the gtx2863r would be better for a 650 flywheel hp goal with response possible.

Would you agree see boost maps below.

The red dots are marking a 4400rpm and 8800rpm mark at 22psi.

post-140040-14313343179941_thumb.jpg

post-140040-14313343676648_thumb.jpg

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https://www.sau.com.au/forums/topic/456534-rb26-turbo-upgrade-gtx/
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I have seen 500wkw with the twin 2860's, now the engine is 3L and there are 2863's going on, should be interesting. Don't use the GTX housings, get someone to machine them into the RB26 -5 housings to keep all the piping stock.

Seems to be one of the "this can't be done" but turns out actually can be done.

The concern is re: no surge slots, but it appears surge really isn't a thing when they're used out in the field.

I have seen 500wkw with the twin 2860's, now the engine is 3L and there are 2863's going on, should be interesting. Don't use the GTX housings, get someone to machine them into the RB26 -5 housings to keep all the piping stock.

Is that DAZ? They were 63's now 67's with the large rear housings.

Ok good to hear. So who would be best to get the dash 5 machined for the gtx2860 ?

The smallest you can go in a -5 housing is a 63 mm GTX wheel UNLESS you put a sleeve in the housing. The -5 wheel at some points is larger than the 60 mm GTX wheel.

I believe "meathead" was looking down this avenue with the 60 mm in -5 housings.

Oh, Damn, it's going to be crazy. Yep, Daz's.

It will be here next week for piping mods, due to the height difference with the 30 block. Very interested to see the results once it gets back on the dyno.

The smallest you can go in a -5 housing is a 63 mm GTX wheel UNLESS you put a sleeve in the housing. The -5 wheel at some points is larger than the 60 mm GTX wheel.

I believe "meathead" was looking down this avenue with the 60 mm in -5 housings.

So you can just use the stock housing for the 2860?

Melbourne ,Pakenham

if youve got time, go speak to Eastern Turbochargers in bayswater (preferably in person)

theyre usually by the book, but if you tell them its been done before (by reliable services) and GCG turned you down, they might actually do it.

...or just contact Hypergear.

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