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Skepticism

Member Since 27 Nov 2012
Offline Last Active Sep 14 2017 08:09 AM
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Posts I've Made

In Topic: What engine oil is everyone putting in the performance SR20DET these days?

23 June 2017 - 04:54 PM

Royal purple worked really well for me, particularly in my 4g63 the lifter noises went from unbearable to virtually silent. Not that much more $ for a street car changing every 6 months, but it's too exxy if you're doing track days every couple of months, lol. I'm switching to penrite 10/10ths and will see how that goes

In Topic: [SYD] Federal RS-RR, 255/35/R18 set of 4

28 April 2017 - 03:24 PM

sold..

In Topic: [SYD] Federal RS-RR, 255/35/R18 set of 4

31 March 2017 - 08:18 AM

Someone buy these fucking things, $320 nego

In Topic: help with compressor maps for the Gen II Gtx2860r & Gtx2867r

14 December 2016 - 02:50 PM

What I noticed is that v2 looks to have worse efficiency overall, and especially at higher boost levels - 2.5 pressure ratio and above, which is >20psi give or take. The new maps also show a smidge of extra flow at the very far edges of the map, but it's unclear if that will translate into real life or if it just looks good.

Therefore I'm sort of skeptical they'll make any extra power, if anything I'm worried they'll be worse than v1, in particular for 2L turbo engines on E85 and high boost. Suspect they're aimed at turbo-converted V8s on lower boost - mind that Garrett is also releasing reverse rotation variants for symmetrical twin turbo setups.

In Topic: efr 6258 t4

07 November 2016 - 03:15 PM

View Post1200ute, on 06 November 2016 - 06:35 PM, said:

I forgot to also mention reverse rotation as well on the gen 2. More aimed at v engines to allow mirror image engine bays I guess.

Agreed. Unfortunately these seem to be designed for bigger engines running lower boost. One look at the compressor map and you can see that the efficiency above 20psi is absolute balls. And actually the efficiency in general is sacrificed to an extent for meagre gains in flow at the top-end - so intake temps will be a tad warmer as well than the first-gen GTX.

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