[whitefox89]

Originally Posted by Stangzilla Like I said sell your pistons, get lower compression ones, 10-11.1 then spray.. that way you will make decent power without the spray then put a 150-175 shot and you will be close to the mark.. Plus it will be reliable and you dont have to worry about shredding that motor which prob will happen if you are a novice with nitrous, and I think you are..

You are correct kind sir. Amature to say the least. But i will be using my 357 as a test dummy.

Why is it not good with high compression?

[Iownastang]

Originally Posted by whitefox89 You are correct kind sir. Amature to say the least. But i will be using my 357 as a test dummy. Why is it not good with high compression?

detonation

[Goblin]

Originally Posted by jordan my uncle runs pump gas in his camaro[383 sbc,13.5.1 c/r] but it is shit to drive b/c you haft to have the timing pulled back so far.The bad thing about race gas is you can drive the car for 30 min and have half a tank left

Huh? Im confused, how does using racing gas have anything to do with fuel economy?

Originally Posted by whitefox89 You are correct kind sir. Amature to say the least. But i will be using my 357 as a test dummy. Why is it not good with high compression?

Nitrous and high compression is fine. Its all in the tune. Lots of Pro Mod guys run 14.5-15:1 compression ratios with 500-1000hp worth of Nitrous.

Originally Posted by jordan detonation

You can have detonation with 8.0:1 and Nitrous. Higher compression doesnt make it more likely to have detonation, a poor tune does.

[Stangzilla]

Originally Posted by whitefox89 You are correct kind sir. Amature to say the least. But i will be using my 357 as a test dummy. Why is it not good with high compression?

Well lets get this straight I am no expert either but for the reason stated by Jordan and also you gotta remember with that high of compression besides detonation you will be raising the cylinder pressure even more when the extra o2 is mixed with the extra fuel during nitrous use. Another thing that comes along with that is an excessive amount of heat that is difficult to get rid of.. Bottom line is that running nitrous on that motor should be left to someone that has experience with nitrous. I would hate to see you toast your motor and for the rest of your life you avoid nitrous like the plague because you will think ahh nitrous sucks because it blew my motor when in fact it was you that did it.. Dude for the 3rd time get rid of those pistons if you are building a street car..

[Iownastang]

[quote=Goblin;765430]Huh? Im confused, how does using racing gas have anything to do with fuel economy?


I was not saying race gas made fuel economy bad it came out wrong i was saying it was such a long drive and the car used so much gas it would be useless to drive the car to the track with race gas in the tank when its almost 7 dollars a gallon here.



heres how the sentence was suppose to read.


my uncle runs pump gas in his camaro[383 sbc,13.5.1 c/r] but it is shit to drive b/c you haft to have the timing pulled back so far.The bad thing about race gas is it is very expensive around here and it would be useless driving it on the street with it in the tank.

[Stangzilla]

Race gas is expensive everywhere!!

[Iownastang]

Originally Posted by Stangzilla Race gas is expensive everywhere!!

oh you can say that again,its just dont make sence to drive to the track thats 45mins. away with a tank full of race gas.

[Stangzilla]

Oh I get it...I am just tryin to make this guy understand that running that motor on the street makes no sense either.. And that running nitrous on it prob will be worse..

[Iownastang]

Originally Posted by Stangzilla Oh I get it...I am just tryin to make this guy understand that running that motor on the street makes no sense either.. And that running nitrous on it prob will be worse..

I know exactly what you are saying,all it will be good for is to drive to the track and back if it ill make it.Now thats of course if you dont haul it on a trailer.

[whitefox89]

weekend warrior/strip trailor queen

[NottyBoy93]

I am not sure if I am the only one here who has ever ran unusually high compression on the street, but after a while it's just not fun anymore.

Overheating issues, vibration rattling bolts loose the list goes on.

For daily driving I would not say anything above 10:5:1

Even that is a little much just from my experience.

And yes, if a motor is built correctly, high compression and Nitrous work great, it's a combustion enhancer, which high compression engines need and love.

Blowers I say no higher than 9:1 to be on the safe side, because high cylinder pressure and boost have effects on flame center distortion.

[/rant finished]

[Stangzilla]

Originally Posted by NottyBoy93 I am not sure if I am the only one here who has ever ran unusually high compression on the street, but after a while it's just not fun anymore. Overheating issues, vibration rattling bolts loose the list goes on. For daily driving I would not say anything above 10:5:1 Even that is a little much just from my experience. And yes, if a motor is built correctly, high compression and Nitrous work great, it's a combustion enhancer, which high compression engines need and love. Blowers I say no higher than 9:1 to be on the safe side, because high cylinder pressure and boost have effects on flame center distortion. [/rant finished]

I agree but like I nave been sayin if he dont know much about nitrous he should not use it in that motor.

[whitefox89]

zilla ive done alot of research and plan to do alot more before i even spray my 357, and when im more knowledged enough i will spray the 342. also have alot of friends around my area that use(d) it.

[Stangzilla]

ok well good luck to you then..

[Goblin]

[quote=jordan;766061]

Originally Posted by Goblin Huh? Im confused, how does using racing gas have anything to do with fuel economy? I was not saying race gas made fuel economy bad it came out wrong i was saying it was such a long drive and the car used so much gas it would be useless to drive the car to the track with race gas in the tank when its almost 7 dollars a gallon here. heres how the sentence was suppose to read. my uncle runs pump gas in his camaro[383 sbc,13.5.1 c/r] but it is shit to drive b/c you haft to have the timing pulled back so far.The bad thing about race gas is it is very expensive around here and it would be useless driving it on the street with it in the tank.

Well that makes tons more sense.

Originally Posted by NottyBoy93 I am not sure if I am the only one here who has ever ran unusually high compression on the street, but after a while it's just not fun anymore. Overheating issues, vibration rattling bolts loose the list goes on. For daily driving I would not say anything above 10:5:1 Even that is a little much just from my experience. And yes, if a motor is built correctly, high compression and Nitrous work great, it's a combustion enhancer, which high compression engines need and love. Blowers I say no higher than 9:1 to be on the safe side, because high cylinder pressure and boost have effects on flame center distortion. [/rant finished]

Overheating? Rattling bolts loose? What list?

If you are overheating, your cooling system isnt up to par. If bolts are coming loose, you didnt tighten them in the beginning. Do you see racers at the track constantly tightening ALL their fasteners and bolts and nuts all over the place? Ummm, no.. and if you do, remind me to stay away from those guys. Lots of engines out there run high compression, and never have overheating problems. What about all the Mopars, Chevys and Fords of the 60s? Most of those engines had 11:1 or higher, and ran fine so long as you used the right gas, and had a good tune. I know this isnt a honda board, but i know of ALOT of honda guys running 12.5:1 and even as high as 13:1 on pump gas, with no overheating issues, or 'rattling' issues that cause fasteners to come loose. 99% of sport bikes today, have over 12:1 compression, and run on pump gas, with no overheating issues. Most exotic cars and super cars, have high compression... with no problems. Even using race gas with a small block ford and high compression, if it overheats.. that means the cooling system isnt doing its job. High compression on the street is very livable and doable, it just depends on what your willing to live with.

[Iownastang]

[quote=Goblin;767701][quote=jordan;766061]

Well that makes tons more sense.

sorry for the misunderstanding

[NottyBoy93]

[quote=Goblin;767701]

Originally Posted by jordan Well that makes tons more sense. Overheating? Rattling bolts loose? What list? If you are overheating, your cooling system isnt up to par. If bolts are coming loose, you didnt tighten them in the beginning. Do you see racers at the track constantly tightening ALL their fasteners and bolts and nuts all over the place? Ummm, no.. and if you do, remind me to stay away from those guys. Lots of engines out there run high compression, and never have overheating problems. What about all the Mopars, Chevys and Fords of the 60s? Most of those engines had 11:1 or higher, and ran fine so long as you used the right gas, and had a good tune. I know this isnt a honda board, but i know of ALOT of honda guys running 12.5:1 and even as high as 13:1 on pump gas, with no overheating issues, or 'rattling' issues that cause fasteners to come loose. 99% of sport bikes today, have over 12:1 compression, and run on pump gas, with no overheating issues. Most exotic cars and super cars, have high compression... with no problems. Even using race gas with a small block ford and high compression, if it overheats.. that means the cooling system isnt doing its job. High compression on the street is very livable and doable, it just depends on what your willing to live with.

I was citing my experience. Not entering into a debate. Basically, if I remember correctly the original question was about a good compression ratio for blowers or Nitrous.

My question to you is....Do you just read a lot of magazines? Or do you actually have first hand experience?

[Stangzilla]

[quote=NottyBoy93;768842]

Originally Posted by Goblin I was citing my experience. Not entering into a debate. Basically, if I remember correctly the original question was about a good compression ratio for blowers or Nitrous. My question to you is....Do you just read a lot of magazines? Or do you actually have first hand experience?

Well blower and turbo compression should be anywhere from 8.5-9.5:1. Nitrous can be run on just about any motor but when you get above 11:1 its a good idea to have experience with nitrous.

[NottyBoy93]

[quote=Stangzilla;768913]

Originally Posted by NottyBoy93 Well blower and turbo compression should be anywhere from 8.5-9.5:1. Nitrous can be run on just about any motor but when you get above 11:1 its a good idea to have experience with nitrous.

I agree totally, and I stated that precise information almost verbatim above

But, having ran high n/a compression on the street, it was a pain in the ass for me, just for me. I know there are guy's like Darrell who just fight through it. But high compression HOT ROD's not crotch rockets are sometimes difficult to tolerate.

What Goblin must not see is that a Hyabusa does not require the same cam spec's, air needs and fuel need's that a 12:5:1 408ci motor do.

That was basically my point, was that if you have been there, you'd understand.

[JayVee]

Keep da motor...IMO...