350z Engine Compression????
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From: So Cal
Originally posted by iio
Hmmm , question for whoever reads this thread.. does putting a TuRbo to this Car* engine* will it affect it in any way? like lets say for example.. blowin it up? or fryin some pistons ? just wondering?
Hmmm , question for whoever reads this thread.. does putting a TuRbo to this Car* engine* will it affect it in any way? like lets say for example.. blowin it up? or fryin some pistons ? just wondering?
With FI on the Z, you are raising the compression of the cylinders walls and depending on the internal components it can blow up or take the abuse. This goes for all cars though. If you check out the S2000, the compression is in the 11:1 range I think. That's pretty high but the engine is built for high compression similarly the Integra Type R and GSR, Celica GT-S - all high compression.
I believe factory turbo for most manufacturer are set to 10 psi to be safe. Once you have reinforced internals, improved injectors, and a fuel management computer to compensate for rich and lean then boosting higher should be no problem.
Hope this helps.
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From: Irvine, Ca
Originally posted by 350Now
Adding a turbo will always affect your car. It will raise the compression ratio, make the engine run hotter, and if not properly tuned can fry your seals and rings.
With FI on the Z, you are raising the compression of the cylinders walls and depending on the internal components it can blow up or take the abuse. This goes for all cars though. If you check out the S2000, the compression is in the 11:1 range I think. That's pretty high but the engine is built for high compression similarly the Integra Type R and GSR, Celica GT-S - all high compression.
I believe factory turbo for most manufacturer are set to 10 psi to be safe. Once you have reinforced internals, improved injectors, and a fuel management computer to compensate for rich and lean then boosting higher should be no problem.
Hope this helps.
Adding a turbo will always affect your car. It will raise the compression ratio, make the engine run hotter, and if not properly tuned can fry your seals and rings.
With FI on the Z, you are raising the compression of the cylinders walls and depending on the internal components it can blow up or take the abuse. This goes for all cars though. If you check out the S2000, the compression is in the 11:1 range I think. That's pretty high but the engine is built for high compression similarly the Integra Type R and GSR, Celica GT-S - all high compression.
I believe factory turbo for most manufacturer are set to 10 psi to be safe. Once you have reinforced internals, improved injectors, and a fuel management computer to compensate for rich and lean then boosting higher should be no problem.
Hope this helps.
Last edited by integrate; Dec 20, 2002 at 08:02 PM.
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From: Irvine, Ca
Originally posted by iio
yea thx, it does helps.. anyways i wont get a turbo for my car, for that i would have to change all that stuff u mentioned above
thx
yea thx, it does helps.. anyways i wont get a turbo for my car, for that i would have to change all that stuff u mentioned above
thx
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From: So Cal
I agree with integrate. If you plan to get turbo plan on spending money on other items to re-inforce your internals and most importantly get a fuel management to prevent detonation.
Also my bad. Integrate and wicked4u2c are correct. The compression ratio won't change since most motor has fix length rod and piston. With FI it's just putting more strain on the engine.
I must be thinking of some article I read about variable compression ratio motor.
Also my bad. Integrate and wicked4u2c are correct. The compression ratio won't change since most motor has fix length rod and piston. With FI it's just putting more strain on the engine.
I must be thinking of some article I read about variable compression ratio motor.
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From: Irvine, Ca
Originally posted by 350Now
I agree with integrate. If you plan to get turbo plan on spending money on other items to re-inforce your internals and most importantly get a fuel management to prevent detonation.
Also my bad. Integrate and wicked4u2c are correct. The compression ratio won't change since most motor has fix length rod and piston. With FI it's just putting more strain on the engine.
I must be thinking of some article I read about variable compression ratio motor.
I agree with integrate. If you plan to get turbo plan on spending money on other items to re-inforce your internals and most importantly get a fuel management to prevent detonation.
Also my bad. Integrate and wicked4u2c are correct. The compression ratio won't change since most motor has fix length rod and piston. With FI it's just putting more strain on the engine.
I must be thinking of some article I read about variable compression ratio motor.
350Now, no problemo on the compression ratio
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It doesn't effect the compression ratio, but does change the effective compression ratio. To be on the safe side I would run stand alone at any boost level. It will also alow you to get optimal power from your FI system. The CR is reletively close to that of the B-series Honda engines and those can usualy handle 10-11psi on stock internals with out any problems, as long as it's properly tuned of course.
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From: Irvine, Ca
Originally posted by '03Z
It doesn't effect the compression ratio, but does change the effective compression ratio. To be on the safe side I would run stand alone at any boost level. It will also alow you to get optimal power from your FI system. The CR is reletively close to that of the B-series Honda engines and those can usualy handle 10-11psi on stock internals with out any problems, as long as it's properly tuned of course.
It doesn't effect the compression ratio, but does change the effective compression ratio. To be on the safe side I would run stand alone at any boost level. It will also alow you to get optimal power from your FI system. The CR is reletively close to that of the B-series Honda engines and those can usualy handle 10-11psi on stock internals with out any problems, as long as it's properly tuned of course.
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From: Southtown
I read in the Nov. '02 issue of Super Street that there were some VQ-powered Skylines equipped with twin turbos that were being raced in the GT-500 series in Japan. I don't know if it's the VQ35DE, but the article said that they were VQ engines. Does anyone have any info on this?
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From: Las Vegas
Isn't detonation the problem with FI on high compression motors?
That is the reason the C5 Vet and the Z06 Vet put out the same HP with a Procharger. The Z06 gets less boost to control detonation than the C5 with less compression. The Z06 has more HP under less than full boost though.
Ultimately you would want to lower the compression to say 9 to 1 and use more boost.
The charge would have to be real cool on the stock Z compression I would think (BIG intercooler).
That is the reason the C5 Vet and the Z06 Vet put out the same HP with a Procharger. The Z06 gets less boost to control detonation than the C5 with less compression. The Z06 has more HP under less than full boost though.
Ultimately you would want to lower the compression to say 9 to 1 and use more boost.
The charge would have to be real cool on the stock Z compression I would think (BIG intercooler).
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