Precision 6765 turbo too small at 20+ psi????
04-18-12, 11:17 PM
#52
Well looks like my turbo is sold and is going on my friends r33 rb26 gts. Now time to shop.
Any feedback on the comp turbos and the precision 6766. i hear the 6766 flows better and the wheel is more alike a gt wheel on a garrett.
id like a solid 500hp-600hp
Any feedback on the comp turbos and the precision 6766. i hear the 6766 flows better and the wheel is more alike a gt wheel on a garrett.
id like a solid 500hp-600hp
Last edited by silverfdturbo6port; 04-18-12 at 11:25 PM.
04-19-12, 07:20 AM
#53
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Rich has the 6766 aspec kit but I'm not sure he's worked out all the kinks yet. Hopefully soon though, as I'd like to hear the difference between that and the 500r he was using.
04-19-12, 07:48 AM
#54
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Same engine, same manifold and WG setup, maxxed out turbos. BW had divided 1.05 hotside, Precision had 0.81 undivided. BW spooled marginaly better, but Precision produced substainly more peak power and had lower backpressure despite higher power level. They tried bigger hotside but didn't picked up any power. So as you can see, turbine housing A/R ratio doesn't have such impact and effects can't be predicted.
http://honda-tech.com/showthread.php?t=3042226
http://forums.evolutionm.net/evo-eng...hs-inside.html
Maybe its in the manifold setup?
04-19-12, 12:51 PM
#56
Pistons are for pussy's
"im planning on using 550cc primarys with ID2000 and dont know if thats enough fuel for 500whp."
500 at 11 AFR at 85% duty cycle and 13% loss for lag is 4860 CC/Min.
if you want to run richer than 11 AFR you will need more or you could raise the pressure a touch.
running very small injectors in the primary and really large in the secondary is not ideal as you want an equal balance of fuel/air in each runner. an especially bad idea if you have significantly enlarged the primary ports/runners.
hc
500 at 11 AFR at 85% duty cycle and 13% loss for lag is 4860 CC/Min.
if you want to run richer than 11 AFR you will need more or you could raise the pressure a touch.
running very small injectors in the primary and really large in the secondary is not ideal as you want an equal balance of fuel/air in each runner. an especially bad idea if you have significantly enlarged the primary ports/runners.
hc
And ID725 and ID2000 is a LOT of money and im not selling drugs yet
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