With this set up on my B18C, what will my compression be?
03-14-2005, 06:20 PM
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With this set up on my B18C, what will my compression be?
ITR cams, and a spoon headgasket? Im going for higher compression, but do not necessarily want to get my A/F parts just yet.
Wondering what my compression will be, and will my valves clear the pistons?
Wondering what my compression will be, and will my valves clear the pistons?
03-14-2005, 06:20 PM
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Re: With this set up on my B18C, what will my compression be? (CrX-To-Tha-Max-v2.0)
http://www.c-speedracing.com/h...c.php
do it yourself
cams dont affect compression.
how thick is the gasket?? you will need to know to get acurate reading on there
do it yourself
cams dont affect compression.
how thick is the gasket?? you will need to know to get acurate reading on there
03-14-2005, 06:30 PM
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Re: With this set up on my B18C, what will my compression be? (CrX-To-Tha-Max-v2.0)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrX-To-Tha-Max-v2.0 »</TD></TR><TR><TD CLASS="quote">Not sure on compression, but spoon raises it exactly .03 points.</TD></TR></TABLE>
If it raises it .3 the that would net you 10.9 on a JDM B18C
If it raises it .3 the that would net you 10.9 on a JDM B18C
03-14-2005, 06:34 PM
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Re: With this set up on my B18C, what will my compression be? (civictildeath)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictildeath »</TD></TR><TR><TD CLASS="quote">http://www.c-speedracing.com/h...c.php
do it yourself
cams dont affect compression.
how thick is the gasket?? you will need to know to get acurate reading on there</TD></TR></TABLE>
Wrong. Cams DO effect compression. Not static compression, but they do effect dynamic compression.
do it yourself
cams dont affect compression.
how thick is the gasket?? you will need to know to get acurate reading on there</TD></TR></TABLE>
Wrong. Cams DO effect compression. Not static compression, but they do effect dynamic compression.
03-14-2005, 06:37 PM
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Re: With this set up on my B18C, what will my compression be? (Hybrid93Eg)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg »</TD></TR><TR><TD CLASS="quote">
Wrong. Cams DO effect compression. Not static compression, but they do effect dynamic compression.</TD></TR></TABLE>
please elaborate on how the affect the compression ratio in the combustion chamber.
Wrong. Cams DO effect compression. Not static compression, but they do effect dynamic compression.</TD></TR></TABLE>
please elaborate on how the affect the compression ratio in the combustion chamber.
03-14-2005, 06:48 PM
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Re: With this set up on my B18C, what will my compression be? (EVIL Hx Coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVIL Hx Coupe »</TD></TR><TR><TD CLASS="quote">
If it raises it .3 the that would net you 10.9 on a JDM B18C</TD></TR></TABLE>
thanks, looks like i typo'd. It's a USDM B18C1, ITR cams, and the headgasket. Either way, close to 11 compression was what i was going for.
If it raises it .3 the that would net you 10.9 on a JDM B18C</TD></TR></TABLE>
thanks, looks like i typo'd. It's a USDM B18C1, ITR cams, and the headgasket. Either way, close to 11 compression was what i was going for.
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03-14-2005, 07:27 PM
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Re: With this set up on my B18C, what will my compression be? (CrX-To-Tha-Max-v2.0)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrX-To-Tha-Max-v2.0 »</TD></TR><TR><TD CLASS="quote">thanks, looks like i typo'd. It's a USDM B18C1, ITR cams, and the headgasket. Either way, close to 11 compression was what i was going for.</TD></TR></TABLE>
Like 10.7 on a USDM.
JDM 10.6 stock
USDM 10.4 stock
I've heard the mugen headgasket raises it by .5, but dont quote me on that.
Like 10.7 on a USDM.
JDM 10.6 stock
USDM 10.4 stock
I've heard the mugen headgasket raises it by .5, but dont quote me on that.
03-14-2005, 07:30 PM
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Re: With this set up on my B18C, what will my compression be? (civictildeath)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictildeath »</TD></TR><TR><TD CLASS="quote">
please elaborate on how the affect the compression ratio in the combustion chamber.</TD></TR></TABLE>
As I said, they effect the dynamic compression. Its simple. You ever wonder why a larger lift, large durration cam calls for "high compression"? Overlap effects dynamic compression, thats why. If you enough overlap, then durring the first few degrees of the compression stroke, some of your mixture is pushed out of the exhaust, thus reducing dynamic compression and effectively reducing overall compression as well. I tried to find you a good link explaining it all, but wasn't too sucessfull. Lots of calculators...
please elaborate on how the affect the compression ratio in the combustion chamber.</TD></TR></TABLE>
As I said, they effect the dynamic compression. Its simple. You ever wonder why a larger lift, large durration cam calls for "high compression"? Overlap effects dynamic compression, thats why. If you enough overlap, then durring the first few degrees of the compression stroke, some of your mixture is pushed out of the exhaust, thus reducing dynamic compression and effectively reducing overall compression as well. I tried to find you a good link explaining it all, but wasn't too sucessfull. Lots of calculators...
03-14-2005, 07:31 PM
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Re: With this set up on my B18C, what will my compression be? (CrX-To-Tha-Max-v2.0)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrX-To-Tha-Max-v2.0 »</TD></TR><TR><TD CLASS="quote">
thanks, looks like i typo'd. It's a USDM B18C1, ITR cams, and the headgasket. Either way, close to 11 compression was what i was going for.</TD></TR></TABLE>
You will sit at about 10.3:1 on a USDM B18C engine with that headgasket. You should replace the pistons with USDM ITR's if you see to raise compression one full point. The headgasket alone will not do it.
thanks, looks like i typo'd. It's a USDM B18C1, ITR cams, and the headgasket. Either way, close to 11 compression was what i was going for.</TD></TR></TABLE>
You will sit at about 10.3:1 on a USDM B18C engine with that headgasket. You should replace the pistons with USDM ITR's if you see to raise compression one full point. The headgasket alone will not do it.
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