Compression guestimates
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Compression guestimates
Well, I finally put together my new bottom end. The ingredients consist of:
1) used - C5 block (bored)
2) LS crank
3) LS rods
4) P73 pistons 81.25
ITR girdle and windage tray etc
I bought the block from somebody who spun a bearing but the top of the deck had some bruises that had to be machined off. The top of the deck was shaved by 0.008" I am going to use an OEM gasket. What would you guess my compression maybe?
Edit: Stock ITR head
Modified by migs at 9:19 AM 8/12/2006
1) used - C5 block (bored)
2) LS crank
3) LS rods
4) P73 pistons 81.25
ITR girdle and windage tray etc
I bought the block from somebody who spun a bearing but the top of the deck had some bruises that had to be machined off. The top of the deck was shaved by 0.008" I am going to use an OEM gasket. What would you guess my compression maybe?
Edit: Stock ITR head
Modified by migs at 9:19 AM 8/12/2006
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From: not walker111 do a search hoes
Re: Compression guestimates (len)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by len »</TD></TR><TR><TD CLASS="quote">Your compression = 0
No head = no compression.
</TD></TR></TABLE>
lol
No head = no compression.
</TD></TR></TABLE>lol
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Re: Compression guestimates (migs)
Should be right around 11:1. A correct "Ls/vtec" setup...it should rip.
Note: You'll have to plug the oil squirters with some bolts. The crank will hit. If you're worried about heat get a jet coating on the top of the pistons.
Note: You'll have to plug the oil squirters with some bolts. The crank will hit. If you're worried about heat get a jet coating on the top of the pistons.
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Re: Compression guestimates (Circuit Star-29)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Circuit Star-29 »</TD></TR><TR><TD CLASS="quote">Should be right around 11:1. A correct "Ls/vtec" setup...it should rip.
Note: You'll have to plug the oil squirters with some bolts. The crank will hit. If you're worried about heat get a jet coating on the top of the pistons.</TD></TR></TABLE>
I bent the oil squirter a little bit and it clears.
How did you get that calculation?
Note: You'll have to plug the oil squirters with some bolts. The crank will hit. If you're worried about heat get a jet coating on the top of the pistons.</TD></TR></TABLE>
I bent the oil squirter a little bit and it clears.
How did you get that calculation?
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From: O-H-I-O
Re: Compression guestimates (migs)
Compression ratio: Volume of the cylinder, piston dish and head dish and
headgasket from top to bottom of the stroke, divided by the head, piston,
and headgasket volume or:
bore(in.) x bore(in.) =__ x .7854 =__ x stroke (in.) =__/ .061=__cc of
cylinder + (head cc +piston cc + headgasket cc) / (head cc+ piston
cc+headgasket cc) = compression ratio
headgasket from top to bottom of the stroke, divided by the head, piston,
and headgasket volume or:
bore(in.) x bore(in.) =__ x .7854 =__ x stroke (in.) =__/ .061=__cc of
cylinder + (head cc +piston cc + headgasket cc) / (head cc+ piston
cc+headgasket cc) = compression ratio
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Re: Compression guestimates (migs)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by migs »</TD></TR><TR><TD CLASS="quote">Ended up welding the holes shut. </TD></TR></TABLE>
sAVaGe, FTW...HAHAH...
sAVaGe, FTW...HAHAH...
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