09-12-2006, 07:01 PM
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#41 |
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Stock
Join Date: Sep 2006
Location: Boise Id
Posts: 16
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Please let me know if there was something that I was not specific enough on.
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1994 BPU+ 6speed 94mm HKS Super Dragger Exhaust AVC-R B-Controller at 17psi HKS Front Mount Greddy Emanage Tein Coil Overs W/EDFC |
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09-13-2006, 12:48 AM
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#42 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
Note that 18psi is too much boost for your engine, if you're using 93 octane pump gas. Keep it 16psi or less unless running some race fuel. In general, the oem twins are fine with the occasional boost up to 20psi or even 22psi. It's your engine that can't handle that much boost on pump gas. Detonation will not only destroy the 'mighty' 2jz-gte in oem form, it will also easily blast through even the most expensive aftermarket internals... Of course, 20psi on race fuel will be proportionally harder on the oem twins than 11.5psi, but unless you've got your accelerator pedal on the floor for a half minute or more (eg. an extended high speed run), the oem twins generally handle greater-than-oem boost levels quite well. In fact, I've heard of the oem twins putting out as much as 30psi on a brief drag-strip pass (with LOTS of supporting modifications). I'm not saying they'll last forever at 20psi, but I'm also saying you probably don't need to worry about any sort of immediate turbo failure "past 18psi" on race fuel. Regarding HKS adjustable cam gears, start with them set to -3 on the exhaust side, and +1 on the intake side. If you want to fine-tune/tweak them beyond that base setting, you'll need to put your car on a dyno. Move them 1 or 2 degrees in each direction, and keep doing pulls until your Supra makes the most power. After that, do a few 1/4 mile passes and try each gear 1 degree in each direction on each pass. If your driving is sufficiently consisent, your fastest 1/4 mile time will represent the best cam gear settings for your Supra's current configuration.
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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. Last edited by pwpanas; 09-15-2006 at 11:39 AM. |
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09-13-2006, 02:42 PM
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#43 |
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Stock
Join Date: Sep 2006
Location: Boise Id
Posts: 16
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Right now, I have a blitz dd bov- an original plug and play bov. It is not a very good blow off valve.-i do not like it. is there any recommendations?? do you know any of the spec on the greddy type s??
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1994 BPU+ 6speed 94mm HKS Super Dragger Exhaust AVC-R B-Controller at 17psi HKS Front Mount Greddy Emanage Tein Coil Overs W/EDFC |
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09-13-2006, 02:57 PM
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#44 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
If you're interested in alternatives, what about the HKS SS? It's available with a full kit, including a recirculation fitting. Although the GReddy Type-S is a decent bov, I'm sure you won't find it any better nor significantly different from the Blitz DD...
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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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09-13-2006, 06:48 PM
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#45 |
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Stock
Join Date: Sep 2006
Location: Boise Id
Posts: 16
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It seems that I have not severe turbo lag, but a decent amount, and at a WOT shift it does not recover the boost quickly at all, it is almost like having to respool. I took off the bov and looked at how the bov was set up, and the hole for the bov goes from a quarter size hole to a dime sixe at the piping connecting to the flange. It also seems to have trouble with holding 16 lbs of press. even though it is made for up to 18??
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1994 BPU+ 6speed 94mm HKS Super Dragger Exhaust AVC-R B-Controller at 17psi HKS Front Mount Greddy Emanage Tein Coil Overs W/EDFC |
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09-14-2006, 01:46 AM
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#46 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
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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. Last edited by pwpanas; 09-14-2006 at 03:14 PM. |
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