Are my compression figures right?
#1
Staging Lane
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Are my compression figures right?
2002 stock LS1:
PRC 5.3 2.5 heads
62cc combustion chamber
.40 cometic gaskets
TR 224 112+4 cam
If I were to do these mods I come up with SCR of 11.346 & DCR of 8.695. Anyone tell me if these figures are right, if not can someone correct them?
PRC 5.3 2.5 heads
62cc combustion chamber
.40 cometic gaskets
TR 224 112+4 cam
If I were to do these mods I come up with SCR of 11.346 & DCR of 8.695. Anyone tell me if these figures are right, if not can someone correct them?
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#9
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Don't read too much into the DCR. You will be fine. This site preaches DCR. Its not that big of a deal. Read this: http://speedtalk.com/forum/viewtopic.php?t=7463
#10
Staging Lane
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Don't read too much into the DCR. You will be fine. This site preaches DCR. Its not that big of a deal. Read this: http://speedtalk.com/forum/viewtopic.php?t=7463
#11
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405hp can you check my compression? Sorry to hijack by the way.
408, 4.030, 4.00
64cc head
JE flat tops 5cc relief
.051 gasket
pistons .019 out of the hole.
Thanks man, where did you find that calculator. It looks a lot more detailed then
the one I am using.
408, 4.030, 4.00
64cc head
JE flat tops 5cc relief
.051 gasket
pistons .019 out of the hole.
Thanks man, where did you find that calculator. It looks a lot more detailed then
the one I am using.
#13
Sorry to hijack the thread but what's the max DCR to use gas pump? I've been reading and some guys are afraid on running 8:1 or 9:1 DCR and I got 11.54 SCR and 10.124 DCR, I do not know if I calculated it incorrectly but 10 looks a lot to me. Hey Aaron, could you help me out? I'm just a pain in the *** I guess jajaja, thanks again you've helped me out before
I'm using 59 cc heads
3.903 flat wiseco 2cc valve relief
4.030 bore and .030 thick head gaskets
3.622 stroke
6.100 rods
0 deck height
TREX CAM @ .050
1.- Intake
duration 243.5
lift 108.3
valve closing ATDC 50.1
2.- Exhaust
duration 249.5
lift 111.5
I'm using 59 cc heads
3.903 flat wiseco 2cc valve relief
4.030 bore and .030 thick head gaskets
3.622 stroke
6.100 rods
0 deck height
TREX CAM @ .050
1.- Intake
duration 243.5
lift 108.3
valve closing ATDC 50.1
2.- Exhaust
duration 249.5
lift 111.5
#14
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Sorry to hijack the thread but what's the max DCR to use gas pump? I've been reading and some guys are afraid on running 8:1 or 9:1 DCR and I got 11.54 SCR and 10.124 DCR, I do not know if I calculated it incorrectly but 10 looks a lot to me. Hey Aaron, could you help me out? I'm just a pain in the *** I guess jajaja, thanks again you've helped me out before
I'm using 59 cc heads
3.903 flat wiseco 2cc valve relief
4.030 bore and .030 thick head gaskets
3.622 stroke
6.100 rods
0 deck height
TREX CAM @ .050
1.- Intake
duration 243.5
lift 108.3
valve closing ATDC 50.1
2.- Exhaust
duration 249.5
lift 111.5
I'm using 59 cc heads
3.903 flat wiseco 2cc valve relief
4.030 bore and .030 thick head gaskets
3.622 stroke
6.100 rods
0 deck height
TREX CAM @ .050
1.- Intake
duration 243.5
lift 108.3
valve closing ATDC 50.1
2.- Exhaust
duration 249.5
lift 111.5
From a quick search, the Trex has an IVC of 76.7 at .006. There are many debated ways of calculating DCR and no one agrees upon the method or what the number really means. It's used alot on this site, but I don't put much stock into it.
My present combo is 11.31 SCR, 8.29 DCR and I have no issues.
Last edited by 405HP_Z06; 03-12-2008 at 08:33 PM.