10-23-2010, 02:02 PM
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#3
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
Originally Posted by NU55TY
Hey guys I have a 95 twin turbo supra, I was thinking about upgrading to the gt28 twin turbo upgrade and increasing the size of the injectors to 600cc and the wastegate to support the 16-28psi boost. Just wanted to know, by doing this, will I have to change the fuel pump and clutch etc or can the stock ones handle it? Is this upgrade worth doing or is it just better to upgrade to a singleturbo? Thanks
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- Which "GT28 Twin Turbo upgrade". I need to know more - there are too many types of "GT28" turbos to help without more info:
GT2854R - 471171-9
GT2859R - 707160-9
GT2859R - 780371-1
GT2860R - 707160-5
GT2860R - 707160-7
GT2860R - 739548-9
GT2860RS - 739548-1
GT2860RS - 739548-5
GT2871R - 472560-15
GT2871R - 743347-1
GT2871R - 743347-3
GT2871R - 707160-10
GT2871R - 780371-2
GT2871R - 743347-2
GT2871R - 743347-4
GT2871R - 771847-1
GT2876R - 705330-1
GT2876R - 705330-2
- The injector size will need to precisely match the max airflow capabilities of the turbo setup. We can determine this by the max horsepower rating of the turbo(s) you choose.
- The fuel pump setup will need to match the injector flow rate.
- A bigger wastegate allows you to run less boost (not more), with larger turbos.
- Again, send me more info on that upgrade you're considering. I need more info to determine whether or not a single turbo would be more cost-effective for you.
- What is your horsepower goal? What is your application?
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.
NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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