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Garrett -5S Vs -10S Or Other (Tuned On E85)

Daz

By Daz,
in Engines & Forced Induction

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The Dan Grand Master

The Dan

Posted
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Not really. All 3 have the same size comp covers. They are interested moreso in response difference between -5's and the GTX2863 to confirm the 'on-paper' results with real world results.

The fitting of them to the car is probably going to be the most difficult thing. They run the disco comp cover which is larger than the -5/-7/-9 comp cover so we don't even know if they are going to fit in place.

We would prefer to have them tested locally for fitment but power figures from anywhere (except WA) will be ok

Piggaz Grand Master

Piggaz

Posted
Posted

Anyone know how necessary it is to run the GTX front comp covers on a 2863??? Would machined -5 comp covers be ok so I can keep standard piping???

I went down and asked GCG myself. They reckon it just won't work with these wheels but who knows? It's a lot of money and effort to throw in the bin if it's a flop.

N1GTR Grand Master

N1GTR

Posted
Posted

Daz, put a pair on and use a MAP sensor ECU.

Do all the piping up (I've spoken to Jack about this BTW), then do a power run. Now, take the piping off and run just the new comp covers open to the air unfiltered and with zero additions to the comp covers. Another power run. See what happens - thats the only way to know for sure and yeah, isn't exactly a cheap thing to do

Edit; That may not make sense. Sorry, the only way to know for sure is to try some back to back, one set with the stock GTR size covers and the other set exactly as Garrett designed them :)

GTScotT Grand Master

GTScotT

Posted
Posted

Anyone know how necessary it is to run the GTX front comp covers on a 2863??? Would machined -5 comp covers be ok so I can keep standard piping???

Ive said this in the GTX thread yet I have already made the 'for science' call to GCG about ditching the fancy comp cover. Unfortunately the answer was that being a 'full blade wheel' they actually need a specially done surge slot for them to work. Results would be bad they rekon if you tried without the slot.

I made this call as at the time I had a disco, and wanted to know if they could simply GTX my disco (essentially the same outcome bar the comp cover) so yeah.

Deano 1 Mentor

Deano 1

Posted
Posted

Gcg or any turbo company, should b looking at how to adapt the factory housing on the gtx series as they would make a truck load of cash, basically bringing out a hole new line up for gtr low mounts around the world.... Not everyone what's a big dirty cheater single.....

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Yeah but for one model of engine? That really wont be more than 1% of sales for the $$$ in development... As it'd need more than just adapting a housing (aka buchtered GT3076s into RB25 housings that don't work... or AVO/Sonic housings)

Like Shell V-Power racing, just not viable from a business model.

And realistically if you are chasing 500rwkw+ which they provide - you are hardly looking at bolt-on approaches or setups.

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