What Is The Best Turbo For 300rwhp With Minimal Lag?

[The Dan]

Actually the original form of the GT2860RS was with the 0.86 A/R turbine housing . Many at Garrett in the US reckoned that if it didn't have the larger ratio turbine housing it wasn't a real DP turbo . They also said that HKS was silly not to have had a 0.86 A/R turbine housing available for the GT2530 .

Anyhow like most things in the GT25/GT28 families the hard bit is finding a T3 flanged turbine housing to make them bolt onto RB exhaust manifolds . HKS have them in 0.64 A/R and Garrett don't do any T3 flanged housings for them at all .

A .

Yes that is correct, Garrett don't make any T3 housings for them but both Sonic and AVO do. The sonic housings are a cleaner casting though.

Have bolted a couple of these on to RB20's now so no comparison of response can be made against a 25 but I can tell you now that when the power curve from the Disco was overlayed against the factory turbo, they run on top of each other until the disco starts shooting up over the top of it when the 20 turbo runs out of puff.

Roughly $1900 for the disco with a Sonic housing, water and oil line kit, adaptors and new studs all over. It even matches the power output of a highflow but has the response of a factory turbo.

EDIT: The Sonic housings are 0.73 also

[GTScotT]

how far do they run ontop of eachother? i would hope an upgrade turbo would be far superior, not slightly.

its hardly worth the outlay if until 5000rpm its as good as stock and from 5 up its making more power. one would hope that there is a significant gain from the point where power comes in and up, not just from where the stock turbo falls over.

[The Dan]

talking about response here. Not power

The Disco craps on the factory turbo, but before it makes it's power the lines trace each other for response, then the Disco says goodbye

[The Dan]

Sorry, probably bad wording in the previous post. It doesn't shoot off when the factory one falls over, it makes more power all over, it just comes on at the same time

[GTScotT]

ah k nice, so same threshold point and then what we would expect from a good upgrade.

nice to know they work well.

[fubar]

Hey guys

cheers for all the info good to see everyone putting the bit in:) i've got a bit to think about then, i'll speak to Stao.

A bit off topic but i've just measured my cams out of my neo and i have

Inlet 86mm

exhaust 82mm

That means they are gtr cams, why would they do that? obvoiusly better performance!

Standard neo are

inlet 84mm

exhaust 87mm

Just wondering if i replace the original cams in the second hand motor im going to put in, with the gtr cams and disconnect the vct is that all i have to do to make it work?

[kwickr33]

Check this out:

http://www.skylinesaustralia.com/forums/At...ti-t319706.html

I've never seen some thing more responsive.