Turbo still not finalised ?

[Rusty]

For reliability and mid-range, an RS2 or 'warmed over' RS2 turbo has always been a tempting prospect. The 3071 promises much but reliability, due to the oil restrictor for one thing, and having to map to account for mid-range surging would be 2 worries of mine with that particular item. A while ago it's all I wanted, now I'd look elsewhere.

Personally, I'd go for a turbo that made the car drive well, rather than one that promises much on paper but delivers a less than ideal driving experience. If older technology gives me a turbo that's more suited to the car and gives a little less in the way of pub figures but is more reliable and drives really well, then so be it.

[Ross]

Will have the "usual choice" mods, RS2 airbox Wagner front inlet & matching RS2 evo intercooler, rods, first overbore pistons, so approx 2226 cc, JP head, injectors, RS2 exhaust manifold (2.75 inch?), and Miltek 3" RS2 exhaust. Custom chip from S2Central.

Doesn't sound stock to me! David is it my old 3B head that went to Corey's, got sold to Mark and then went to JP's that your using? Should be awesome, flowed well before anything was done to to it

Sounds like you're in the same boat as me, turbo & injector dilemma

Can't give any experiences on the turbo but it all seems a bit loose to me - how much earlier spool, and is that with the journal bearing of the $550 extra for the triple bearing? Plus it looks like it's T3 so won't work with the RS2 EM...

My experience with the GT3071 was that it was great once mapped and working, as PRJ said surging was an issue although I'd be interested to see how a stage #2 head helps that.

[prj]

0.63 A/R is too small for 3071R.
You really need to have the engine flowing very well, otherwise it'll surge in high gears, and to map out the surge you'll have to map out some of that spool...

Is your engine stock?

[pixsaudisex2]

I thought the 3071r was amazing once all mapped etc, obviously like you say its old hat now,..

[macspring]

After all my reading and posting, on which turbo to use, I'd decided on a Garrett GT3071 with a .63.

Want to use the car in the city with fast spool up and reliability as priorities.

Will have the "usual choice" mods, RS2 airbox Wagner front inlet & matching RS2 evo intercooler, rods, first overbore pistons, so approx 2226 cc, JP head, injectors, RS2 exhaust manifold (2.75 inch?), and Miltek 3" RS2 exhaust. Custom chip from S2Central.

So now flicking around I see this with the comment that it spools better than the 3071 and makes more power ? Says it's a more modern design and it's less expensive than a 3071 ?

http://www.034motorsport.com/turbochargers-and-accessories-precision-turbos-precision-cea-5557-turbo-billet-compressor-wheel-p-20077.html

The quicker spooling appeals, don't really require the extra power. 420'ish with quick spool every day, all day would be fine.

Any comments or experiences, either way ?

Thanks.