lq4 with 60cc heads.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
lq4 with 60cc heads. Guys what would compression be lq4 with 60cc 243s and .051 gaskets? I come up with 10.8-9 comp.
What about dcr with a cam of 46 adbc at .050?
This confuses me like crazy. Im thinkin about milling heads for more comp and higher dcr.
Thoughts? Thanks
What about dcr with a cam of 46 adbc at .050?
This confuses me like crazy. Im thinkin about milling heads for more comp and higher dcr.
Thoughts? Thanks
I cant comment on you DCR but SCR looks "about" right. When I put unmilled TSP Stage 2.5 5.3's on my lq4 they told me I would be at 10.6:1 with stock HG. Those start out as 862's which are 61ish if I remember right.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
Ok i kinda thought i was about right. Now how about at 58cc with stock gasket?
This is what i am planning on milling them to. I calculated 11.2 scr.
I just need dcr of both setups. Can anyone help me out here?
This is what i am planning on milling them to. I calculated 11.2 scr.
I just need dcr of both setups. Can anyone help me out here?
We really need at least the following specs for cam grind you'll be using to get he DCR:
Duration of both intake and exhaust lobes at .006" and .05", and ICL, and it would be nice to have the LSA also.
Duration of both intake and exhaust lobes at .006" and .05", and ICL, and it would be nice to have the LSA also.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
So my dcr is very low right now. What would u guys do? Is 11.2 scr at 58cc with stock gaskets? What about runnin a .040 gasket with 58cc?
I want to try and get every bit of power out of this setup. Im kinda leaning toward around a 8.7 dcr. No higher than 11.5 scr. Also ptv will play a big role in this. Maybe martin will chime in on this.
I want to try and get every bit of power out of this setup. Im kinda leaning toward around a 8.7 dcr. No higher than 11.5 scr. Also ptv will play a big role in this. Maybe martin will chime in on this.
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What was your P to V before the first time you measured? If you want to mill your heads, you'll need to subtract the amount you want to mill from the P to V measurements you took the first time you did them.
IIRC you have the SNS Stage 3. You'll want to use the advertised intake close event and not the @.050" event. The intake valve closes @71.5* ABDC. Use this figure for your DCR calculations.
IIRC you have the SNS Stage 3. You'll want to use the advertised intake close event and not the @.050" event. The intake valve closes @71.5* ABDC. Use this figure for your DCR calculations.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
Thats what i have been using. I sent a email the other day. Right now with the 60cc heads and a .40 cometic gasket.
I calculated 11.2-3 scr and 8.5 dcr. What u think?
Before with stock gaskets i was at 10.9 and 8.21
I calculated 11.2-3 scr and 8.5 dcr. What u think?
Before with stock gaskets i was at 10.9 and 8.21
