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08-10-2012, 04:52 PM
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#1 |
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Stock
Join Date: Aug 2012
Location: Sweden
Posts: 11
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Thanks again!
 What is the max boost that the stock Euro spec turbos can handle? Trying to figure out boost vs fuel octane. In sweden we have 95 and 98 octane, unfortunaly the car haven't been driven here, only 5 miles if the seller is correct. Not sure what fuel octane England are using. |
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08-10-2012, 05:08 PM
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#2 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
1) Motor octane is MUCH more important than research octane. You have to find out how the octane of your local "98 octane" fuel is measured, and it's *motor* octane number. 2) With a US-spec Mkiv Supra Turbo, the max safe boost with local 93 octane fuel (calculated at ((R+M)/2)) is about 16psi. Anything more than that gradually destroys the engine (not the turbos). 3) With the US-spec Mkiv Supra Turbo, the oem boost level is about 11.5psi. This of course is very safe with the recommended 93 octane 'premium' fuel. 4) The turbos won't die quickly unless you're running in excess of 28psi. HOWEVER at anything over the stock boost levels, their longevity will be impacted. The more you push them past the oem boost levels, the quicker they'll fail. 5) Again, (I can't stress this enough) the engine is what gets damaged FAST with high boost on pump gas - not the turbos. If you're going to run high boost, use race fuel or methanol injection.
__________________
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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08-13-2012, 09:33 PM
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#3 |
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Stock
Join Date: Aug 2012
Location: Sweden
Posts: 11
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Yes, thanks!
Like you said the hard thing is to know how hard the engine have been pushed, put that's the think with every car. I want to have a good base to start with like a LHD Targa 6 speed TT 1998 which I belive is the best base, of course less miles would be better but that also cost and I will upgrade parts after they break. If the motor is bad I saw Suprastore selling OEM motors with auto trans for 3k shipped. So the motor is cheper than the 6 speed trans, and to convert a auto to manual is going to cost more. I heard that Canadian cars have KM/h like we have here in sweden, how can I se on a Supra if it is from Canada or US? Best Regards Fredrik |
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08-15-2012, 12:07 AM
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#4 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
http://www.mkiv.com/techarticles/read_vin/index.html http://www.mkiv.com/techarticles/read_vin/supravin.html
__________________
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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08-16-2012, 11:59 PM
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#5 |
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Stock
Join Date: Aug 2012
Location: Sweden
Posts: 11
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Thanks again! Still waiting for the VIN from him. If a stock supra got 160 000 Miles on it, how bad is that? I dont know how good or bad the car have been serviced or driven...
/Fredrik |
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08-17-2012, 12:09 AM
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#6 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
__________________
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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08-17-2012, 12:40 AM
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#7 |
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Stock
Join Date: Aug 2012
Location: Sweden
Posts: 11
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Okey thanks, motor seems to be almost the cheapest part. Being a beginner when it comes to supras. What about the transmission (6 speed), rear end, suspension and stuff like that? How will they take 160 000 miles. I know it depends on maintence and how hard the car have been driven. I have nothing against to get my hands dirty and do job on the car that's no problem at all, just fun, it's the costs that scares me. Of course a more expensive car will have less miles but it dont say that the interior is in top shape so it's hard but I hope I find one very soon. Anxious to start the journey. Best Regards Fredrik |
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