what compression would you run???
what compression would you run???
aite, im looking and planning for mods on my 07hr base model, would like to build and shoot bout 200-300 shot of juice what compression would you guys recommend, also does anyone know of ecu upgrades yet? what lsd should i use(a mix between street and drag) or should i leave mine...any cams?
i do plan to build the motor, but i plan to start with the basics 100 shot until an engine management is available for the hr then build the block, port the heads, cams, and valves...i basically plan to build it for 1/4 mile but some street action as well, by the way its going to be a direct port if i decide on a big shot like a 300....lets just wait and see
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Originally Posted by eltness350
8:5:1 ...and make sure u get piston/rods that r made for big nitrous shots like that....gl
nitrous is not boost....you don't run low compression on nitrous..
Get a good tune and build the motor just like you are for "all-motor"....say 11.0:1 or 11.5:1....if you have a good tuner, a big shot and high compression are excellent for nitrous. I would recommend a two stage system or a nitrous controller like the maxmizer so you can bring on the nitrous slow.
If you go 150 on stage 1 and 150 on stage two...that is definitely do-able. The maximizer would be your best bet as you can control the percentage of nitrous without having to use a two stage setup....start with 35-50% on your direct port 300 shot and ramp it up as the RPMs go up. I can only imagine what kind of torque you'd be putting down. I was going to go this route, but have ultimately decided on twins and nitrous which will all be done next week! woo hoo. Good luck with the build. Nitrous is alot of fun.
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Originally Posted by Old School
nitrous is not boost....you don't run low compression on nitrous..
Get a good tune and build the motor just like you are for "all-motor"....say 11.0:1 or 11.5:1....if you have a good tuner, a big shot and high compression are excellent for nitrous. I would recommend a two stage system or a nitrous controller like the maxmizer so you can bring on the nitrous slow.
If you go 150 on stage 1 and 150 on stage two...that is definitely do-able. The maximizer would be your best bet as you can control the percentage of nitrous without having to use a two stage setup....start with 35-50% on your direct port 300 shot and ramp it up as the RPMs go up. I can only imagine what kind of torque you'd be putting down. I was going to go this route, but have ultimately decided on twins and nitrous which will all be done next week! woo hoo. Good luck with the build. Nitrous is alot of fun.
Get a good tune and build the motor just like you are for "all-motor"....say 11.0:1 or 11.5:1....if you have a good tuner, a big shot and high compression are excellent for nitrous. I would recommend a two stage system or a nitrous controller like the maxmizer so you can bring on the nitrous slow.
If you go 150 on stage 1 and 150 on stage two...that is definitely do-able. The maximizer would be your best bet as you can control the percentage of nitrous without having to use a two stage setup....start with 35-50% on your direct port 300 shot and ramp it up as the RPMs go up. I can only imagine what kind of torque you'd be putting down. I was going to go this route, but have ultimately decided on twins and nitrous which will all be done next week! woo hoo. Good luck with the build. Nitrous is alot of fun.
thanks guys, ive heard both sides of the the story some people say you need to run low compression as if you were boosting the car, but then i see all the muscle cars and drag cars out there running super high compression and a big shot...so was really confused on that, and also if i run a 8.5:1 wont my motor suck without the juice, remember i plan on street use for the car...
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From: under the hood
Originally Posted by Old School
nitrous is not boost....you don't run low compression on nitrous..
Get a good tune and build the motor just like you are for "all-motor"....say 11.0:1 or 11.5:1....if you have a good tuner, a big shot and high compression are excellent for nitrous. I would recommend a two stage system or a nitrous controller like the maxmizer so you can bring on the nitrous slow.
If you go 150 on stage 1 and 150 on stage two...that is definitely do-able. The maximizer would be your best bet as you can control the percentage of nitrous without having to use a two stage setup....start with 35-50% on your direct port 300 shot and ramp it up as the RPMs go up. I can only imagine what kind of torque you'd be putting down. I was going to go this route, but have ultimately decided on twins and nitrous which will all be done next week! woo hoo. Good luck with the build. Nitrous is alot of fun.
Get a good tune and build the motor just like you are for "all-motor"....say 11.0:1 or 11.5:1....if you have a good tuner, a big shot and high compression are excellent for nitrous. I would recommend a two stage system or a nitrous controller like the maxmizer so you can bring on the nitrous slow.
If you go 150 on stage 1 and 150 on stage two...that is definitely do-able. The maximizer would be your best bet as you can control the percentage of nitrous without having to use a two stage setup....start with 35-50% on your direct port 300 shot and ramp it up as the RPMs go up. I can only imagine what kind of torque you'd be putting down. I was going to go this route, but have ultimately decided on twins and nitrous which will all be done next week! woo hoo. Good luck with the build. Nitrous is alot of fun.
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From: On a forum dedicated to Boost
Originally Posted by go-fast
11 to 1 seems a little steep for pump gas
RSX Type S is 11.0:1 STOCK....
the list goes on.
I have been running nitrous on all my cars for the better part of 12 years....I do know a thing or two about spray. =P
Last edited by Old School; Oct 4, 2007 at 10:11 AM.
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From: under the hood
Originally Posted by Old School
my bike is 12.5:1 STOCK....and it runs on pump gas.
RSX Type S is 11.0:1 STOCK....
the list goes on.
I have been running nitrous on all my cars for the better part of 12 years....I do know a thing or two about spray. =P
RSX Type S is 11.0:1 STOCK....
the list goes on.
I have been running nitrous on all my cars for the better part of 12 years....I do know a thing or two about spray. =P
My '68 Chevelle SS396 is 14:1 at almost 700HP.
I ran a 200HP nitrous shot on it ONCE and scared the $h^! out of myself.
I didn't think the front end was ever going to come down.
I had the choice of wheelie bars or NO nitrous.
I went with NO nitrous because running a 10.7 is fast enough for me.
No need to jump into the 9's on a street driven car.
You need to consider now what you may want to do in the future.
If you go high compression now for nitrous, and decide later to go FI, then you'll be building again.
Decisions, decisions, decisions
I ran a 200HP nitrous shot on it ONCE and scared the $h^! out of myself.
I didn't think the front end was ever going to come down.
I had the choice of wheelie bars or NO nitrous.
I went with NO nitrous because running a 10.7 is fast enough for me.
No need to jump into the 9's on a street driven car.
You need to consider now what you may want to do in the future.
If you go high compression now for nitrous, and decide later to go FI, then you'll be building again.
Decisions, decisions, decisions
Joined: Dec 2005
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From: On a forum dedicated to Boost
Originally Posted by go-fast
i have a little experience as well,and was considering the negative effects of the timing that would have to be pulled on the vq to run that high of a compression ratio.
Jeremy is running an insane amount of compression on a nitrous motor for the Z. 15.0:1 I believe.
Joined: Dec 2005
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From: On a forum dedicated to Boost
Originally Posted by garym
My '68 Chevelle SS396 is 14:1 at almost 700HP.
I ran a 200HP nitrous shot on it ONCE and scared the $h^! out of myself.
I didn't think the front end was ever going to come down.
I had the choice of wheelie bars or NO nitrous.
I went with NO nitrous because running a 10.7 is fast enough for me.
No need to jump into the 9's on a street driven car.
You need to consider now what you may want to do in the future.
If you go high compression now for nitrous, and decide later to go FI, then you'll be building again.
Decisions, decisions, decisions
I ran a 200HP nitrous shot on it ONCE and scared the $h^! out of myself.
I didn't think the front end was ever going to come down.
I had the choice of wheelie bars or NO nitrous.
I went with NO nitrous because running a 10.7 is fast enough for me.
No need to jump into the 9's on a street driven car.
You need to consider now what you may want to do in the future.
If you go high compression now for nitrous, and decide later to go FI, then you'll be building again.
Decisions, decisions, decisions
+1....one reason I went the route I did....8.5:1 big bore, twins and nitrous....yummmmy. lol.
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From: under the hood
Originally Posted by Old School
stock compression is 10.3:1 on the Z....11.0:1 is not that big of a jump. You can only go so far with pulling out timing before you toast the exhaust valves. I ran 150 shot on stock compression just fine. I seriously doubt he'll have a problem running more nitrous in the higher rpms with a similar setup. Especially running forged internals. I'd say take out 4-6 degrees of timing on 11.0:1 or 11.5:1 compression and work on the fuel. 150 shot @ 3500rpms....and another 150 shot at 5k rpms. You can ramp this up with the maximizer....
Jeremy is running an insane amount of compression on a nitrous motor for the Z. 15.0:1 I believe.
Jeremy is running an insane amount of compression on a nitrous motor for the Z. 15.0:1 I believe.
Last edited by go-fast; Oct 4, 2007 at 11:07 AM.
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From: On a forum dedicated to Boost
Originally Posted by istan
Dude, 12 years, time to grow up and get off the bottle. I keed I keed!
my cousin use to say the same thing..lol. "you're bottle fed...hahaha". Now he just says, "jeeeeeeeeeeeeeezus, you make too much money. Wish I had twin turbos" lol. I always find it funny how he forget to mention the nitrous. lol.
