Z1motoring vq rebuild kit stage 3 cr...HELP!! PlZ

[336se-r]

So my ser 6mt has been consuming too much oil so I am going to rebuild it but not sure what compression ratio I want. 8.8 or 11.00 I think I want to go na but they told me it might not b such a good idea . I noe there are a lot of experience ppl on here n I want to get best out of motor without going crazy

[TUKO]

If your staying n/a then 11.0 it is.

[336se-r]

Yea that's wat I want . But I heard you needed racing gas
Although I want to spray if I don't turbo

[taz]

11:1 does not need "racing gas", but will require premium fuel at all times. If you want to spray then I'd get some custom pistons done up at 9.5:1 or 10:1 just to keep it safer

[4DZC]

11.1 compression ratio and upgrade to 96mm pistons (since your doing a rebuild) Perfect opportunity to add larger cams as well.

[TUKO]

Lower/custom compression isnt completely necessary to spray. Itll cost more to order custom pistons since off the shelf pistons are available for cheap. Id go 96mm like lawrence suggested. If you plan on.spraying a really big shot then maybe you should go with the suggestion Taz made. I agree with what he said in reference to gas.

[336se-r]

Always very helpful. Yea I figured I did not need "race gas" I thought I read that the 370z have 11. Cr...
I don't want my car too b slow lol I'm at 268 whp and I dnt want to loose it by changing to 8.8 so I was thinking 11. And 75 shot on tune would b nice

Not a pro tho so please correct me if I am miss led lol
Also read that I could go high compression and if I decided to boost I cold run low boost and still make as much power as low cr and high boost

[4DZC]

Not necessarily true. The main reason for high compression AND boost is so that there isnt ANY turbo lag. High compression allows the engine to be ultra responsive...Low boost is a must here as youve stated. This is a fine line, and if done correctly you will have a very nice set up, but understand me, when it comes to high boost, lots of variables here, a high compression build with a low boost application is not going to make as much as a purpose built low compression engine. Boost is relative to the size of the compressor used in the application, not the boost setting. With the VQ35 you could build a low compression build and with the right turbine AR, boost with enough pressure to flow enough air to generate 700+hp. This will not happen with a high compression build. You will detonate long before you reach the same levels. Sure you could build a 300-maybe 400hp high compression build, but it will cost a great deal more to do so....Many more variables I didnt account for, so this is just a quick vague, BUT true answer.

Originally Posted by 336se-r

Always very helpful. Yea I figured I did not need "race gas" I thought I read that the 370z have 11. Cr...
I don't want my car too b slow lol I'm at 268 whp and I dnt want to loose it by changing to 8.8 so I was thinking 11. And 75 shot on tune would b nice

Not a pro tho so please correct me if I am miss led lol
Also read that I could go high compression and if I decided to boost I cold run low boost and still make as much power as low cr and high boost

[336se-r]

I would b happy with 300 whp.
I want to turbo in about a year. But dnt want to drop to 8.8 n b slow till I get turbo so I might go with the high compression n have the same guys tune for turbo once I'm there I dnt need 500hp lol I'm only 20 yrs old

[336se-r]

How much would you say would b safe to spray on 11.0

[4DZC]

No idea. I dont spray, especially with high compression AND turbo....lol Honestly, I couldnt answer this. I never have, and never will use NOS. I see no point for...and you being "only" 20....uhm I REALLY dont see a need for it. Bro just let your build and tune do the bragging/talking. No need for spray. However, maybe someone else can/will chime in with an answer for ya.

[336se-r]

Lol not planing on turbo and spray lol
Want to spray once in I while till I turbo.
Once I turbo I'm done..

[taz]

Originally Posted by TUKO

Lower/custom compression isnt completely necessary to spray. Itll cost more to order custom pistons since off the shelf pistons are available for cheap. Id go 96mm like lawrence suggested. If you plan on.spraying a really big shot then maybe you should go with the suggestion Taz made. I agree with what he said in reference to gas.

I suggested a slightly lower comp because my impression of the OP is this is his first build. Figured and extra $250 on pistons now might save him a build later if he gets a bit too happy on the spray. 96mm @ stock like compression will still net some NA power while giving him alot more room down the road for boost or bigger n2o jetting

[TUKO]

Originally Posted by taz

I suggested a slightly lower comp because my impression of the OP is this is his first build. Figured and extra $250 on pistons now might save him a build later if he gets a bit too happy on the spray. 96mm @ stock like compression will still net some NA power while giving him alot more room down the road for boost or bigger n2o jetting

Valid points.

Originally Posted by 336se-r

I would b happy with 300 whp.
I want to turbo in about a year. But dnt want to drop to 8.8 n b slow till I get turbo so I might go with the high compression n have the same guys tune for turbo once I'm there I dnt need 500hp lol I'm only 20 yrs old

Bad idea. build it right the first time. You wont loose power or much if any. power curve will be shifted.

[336se-r]

Originally Posted by TUKO

Valid points.



Bad idea. build it right the first time. You wont loose power or much if any. power curve will be shifted.

Yea I think I'm gnna go with stock compression

Originally Posted by taz

I suggested a slightly lower comp because my impression of the OP is this is his first build. Figured and extra $250 on pistons now might save him a build later if he gets a bit too happy on the spray. 96mm @ stock like compression will still net some NA power while giving him alot more room down the road for boost or bigger n2o jetting

A lot of very helpfull info from all u guys thanks
Stock like compression 96mm it is.. Made a good pointing dnt whamt to build it again I plan on keeping this forever lol