Help with DCR & Quench
Help with DCR & Quench I've been trying to figure out my DCR and quench and something doesn't seem right. Been using a DCR calculator I found on here but my it comes out pretty high. 
Here's my setup.
LQ9 w/ 317 (all stock)
230/224 .575/.563 111 LSA (I'm guessing ICL is also 111 because I believe this cam does not have any advance ground into it. Please correct me if I'm wrong.)
Not sure on which head gasket yet, because I don't know where my DCR is at. So I just entered in a stock GM gasket (.054 I believe)
Hopefully the attached files show the numbers I entered in. Can someone tell me what I may have wrong.
Here's my setup.
LQ9 w/ 317 (all stock)
230/224 .575/.563 111 LSA (I'm guessing ICL is also 111 because I believe this cam does not have any advance ground into it. Please correct me if I'm wrong.)
Not sure on which head gasket yet, because I don't know where my DCR is at. So I just entered in a stock GM gasket (.054 I believe)
Hopefully the attached files show the numbers I entered in. Can someone tell me what I may have wrong.
Your advertised numbers are wrong. The advertised numbers are the numbers at .006" not the ones at .050".
I'm guessing a Comp XE or similar lobe, so with that (all your other numbers are correct), your DCR is 7.5:1.
I'm guessing a Comp XE or similar lobe, so with that (all your other numbers are correct), your DCR is 7.5:1.
Originally Posted by JakeFusion
Your advertised numbers are wrong. The advertised numbers are the numbers at .006" not the ones at .050".
I could have sworn that advertised was at .050"
Ok, now would anyone happen to know that spec since I don't have the cam yet or cam card?
EDIT: 7.5 seems low. This will be my daily driver, I was thinking something between 8 to 8.5.
Originally Posted by JakeFusion
I'm guessing a Comp XE or similar lobe, so with that (all your other numbers are correct), your DCR is 7.5:1.
Oh and what about quench or should I not even worry about that?
You're at stock compression. Quench isn't as big of a deal. Get up over 11:1 and you'll need to be concerned with it.
I used the Comp XE numbers, which are 53 degrees higher at .006" than they are at .050".
I used the Comp XE numbers, which are 53 degrees higher at .006" than they are at .050".
Originally Posted by JakeFusion
You're at stock compression. Quench isn't as big of a deal. Get up over 11:1 and you'll need to be concerned with it.
I used the Comp XE numbers, which are 53 degrees higher at .006" than they are at .050".
I used the Comp XE numbers, which are 53 degrees higher at .006" than they are at .050".
Good deal bud.
I just wanted to get a little more SCR out of it without screwing up my quench. I should be able to use a .040" gasket without problems right?
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