Toymods Car Club Inc: Tech & Conversions => Overboosting ST185

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Toobs
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December 2002

Re: Overboosting ST185

Sat, 22 January 2005 07:21

cutsGotBoost wrote on Sat, 22 January 2005 11:01

if anyone goes on gt4oc here they will know there is big questions about the vsv. look at how it works, turbo goes to actuator then from there goes next to the block towards the firewall. if it bleeds air from the wastegate then the wastegate will get less air to open the wastegate and actually INCREASE boost not decrease it. The low boost in 1st and second is a big myth i reckon, and so do a lot of ppl on gt4oc.
I put a boost guage in my "4" when i had it and it actually made more boost in first and second.

as for turbo's depends on what you want? do you want big power, or do you just want something more efficient. my opinion stick with garret oldest and biggest of the turbo manufactures, as a lot of other companies buy garret turbos, stick their name on it and sell it for twice as much.
for a "4" ide go with garret GT30 good for up to 550 hpm ball bearing, but it is external gate, which means u gotta buy a wastegate and modifly your exhaust manifold and dump pipe., but external gates have a lot more control over boost.
If you want a internal gate then a GT28 would be the better option good for 350 hp still ball bearing. both wouldnt have much turbo lag. look around, even ebay.

Does it bleed air from the wastegate though?
You've got me thinking... I'd best be off to the workshop to push some air through the wastegate on my spare turbo!

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