11:1 Too Much For DD?
#1
11:1 Too Much For DD?
I am in the process of taking off my S/C and putting in a Stage 1 NA block. My question is... Is a 11:1 compression ratio too much for 91 pump gas? The last thing I want for my DD is to have detonation issues.
If you think 11:1 is too much, are there any aftermarket pistons around a 10.5:1 or stock 10.3:1? I can't seem to find any.
Just a note, there is no 93 available in SoCal.
Thanks for the input.
If you think 11:1 is too much, are there any aftermarket pistons around a 10.5:1 or stock 10.3:1? I can't seem to find any.
Just a note, there is no 93 available in SoCal.
Thanks for the input.
#2
Registered User
iTrader: (1)
I am in the process of taking off my S/C and putting in a Stage 1 NA block. My question is... Is a 11:1 compression ratio too much for 91 pump gas? The last thing I want for my DD is to have detonation issues.
If you think 11:1 is too much, are there any aftermarket pistons around a 10.5:1 or stock 10.3:1? I can't seem to find any.
Just a note, there is no 93 available in SoCal.
Thanks for the input.
If you think 11:1 is too much, are there any aftermarket pistons around a 10.5:1 or stock 10.3:1? I can't seem to find any.
Just a note, there is no 93 available in SoCal.
Thanks for the input.
I'm in Cali so I know what you are talking about in regards to gas. A good resource to speak with is GT Motorsports in Rancho Cucamonga. Ask for Sam as he is the lead tuner.
He tuned my Turbonetics 350Z and he is very knowledgable on the VQ engine.
#4
Thanks for the info.
That is true, but I would worry about the timing being too retarded and causing other issues... like being sluggish and running too hot. I will give Sam a call.
Good to know, you have any links for custom pistons?
That is true, but I would worry about the timing being too retarded and causing other issues... like being sluggish and running too hot. I will give Sam a call.
Originally Posted by str8dum1
you can have pistons made for any compression that you want, so dont let in stock ratios be the only thing you are looking at.
#7
New Member
iTrader: (2)
11.1 is still relatively (keyword relative) conservative. Granted its a push up from 10.3, but I would imagine you wouldn't have too many issues DD'ing a well tuned setup provided your tuner doesn't push too far for all out numbers.
But the question you should ask is why? NA power is cool but what is it your really looking for?
BTW: I'm at 11.3 and have had no problems on CA's 91.
But the question you should ask is why? NA power is cool but what is it your really looking for?
BTW: I'm at 11.3 and have had no problems on CA's 91.
Last edited by Zazz93; 05-13-2011 at 02:01 PM.
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#10
The car will be tuned with UpRev; makes me more comfortable that you are at 11.3:1 and doing fine.
#15
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