Quote:
Originally Posted by PSI
Yes just the basic S475 but we modified the compressor cover for a bit more flow. You can't beat them for the price. Ours has had a real hiding and yet we have not had a single problem. And the thrust still feels as good as new. Even when street/circuit driving the lag is less than you would expect from a turbo that size and transient response is surprisingly good. It easily makes 25psi+ on the 2 step but it's no use to us as we get a better 60ft by leaving the line at 15psi or less - hard when the gate spring is 20psi.
Another reason why they are such good value for dollar - the wheels are balanced individually and parts are cheap, so they can be easily rebuilt at home.
The matchbot is flash but we've run out of aux in's for logging so don't have enough real data to make much use of it. Fuel press and turbine press have to take turns on the same channel haha. It might be time to change from the G4RX to an Extreme.
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when i first laid hands on the S475 years ago i couldn't believe the amount of turbo you got per dollar. it is quite responsive for that huge T6 frame on an engine that barely matches it in size.
it won't ever be as responsive as some of the mid frame BB turbos but the BB market is still anal about selling you all new shit when the turbos go south. fuck Garrett, the company you love to hate.. love the response, hate the price tags when the turbos do wind up needing to go into the shop. rather surprised no one has offered rebuild kits for them yet, regardless that ceramic ball bearings are not exactly super hard to find now. anyone who can mill a bore could probably find an oversize bearing set to work.
turbos aren't rocket science, though the manufacturers try to convince you that it is. 2 fan blades, 2 bearings, thrust bearing, 2 seals and balancing to handle the 120k+ RPMs they spin up to.
04-17-2013, 07:57 PM
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