13:1 Compression
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13:1 Compression
After putting 1/2 tank 93 octane, an octane booster plus 1/2 tank of aviator fuel (100 octane), advancing the timing gear 2.5 degrees, retarding the ignition time, and boostin the fuel pressure gauge up to 47psi we found that when we put a bit of load on the throttle the engine still ping'd. But hey there was no sign of detonation on the plugs and there was a clean orange burn all the way across.
So it being 11pm, me still having a 2 + hour ride home (dayum I-4 construction), we decided the mill was too much for the head and a thicker head gasket was probably needed.
We were right. Today David took the car over to his friends shop and doing the compression calculations they found it to be 13:1.
We have now ordered a thicker head gasket that is used in boost applications and we are hoping this will lower my compression ratio. like i have a freakin choice...
so OOPS!
any thoughts?
oh yea...all the codes cleared, the small oil leak from the plug drilled into the head fixed, the radiator replaced, david having walked an acura teg with li'l effort, this seems to be our next conquest!
So it being 11pm, me still having a 2 + hour ride home (dayum I-4 construction), we decided the mill was too much for the head and a thicker head gasket was probably needed.
We were right. Today David took the car over to his friends shop and doing the compression calculations they found it to be 13:1.
We have now ordered a thicker head gasket that is used in boost applications and we are hoping this will lower my compression ratio. like i have a freakin choice...
so OOPS!
any thoughts?oh yea...all the codes cleared, the small oil leak from the plug drilled into the head fixed, the radiator replaced, david having walked an acura teg with li'l effort, this seems to be our next conquest!
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if you can only race me in a straight line then whats the point 
...91 SMF SCCA
...91 SMF SCCAhttp://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production
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Originally posted by Juiced_Sol
yep... id defently lower the compression if you want it to be streetable (driven on 93 octane). Also has it been dyno/ what do you have done.
yep... id defently lower the compression if you want it to be streetable (driven on 93 octane). Also has it been dyno/ what do you have done.
it's a high compression sohc build up using zc pistons. i tore it down to nothing but bare block and under the instruction of David, built it back up! the details are somewhere in this forum.
it run soooo smooth...like stock...
er
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if you can only race me in a straight line then whats the point ...91 SMF SCCA
...91 SMF SCCAhttp://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production
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what ecu ? 13:1 can be steetable w/ hondata
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engine building &best
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wow sounds like my compression:o) with my head milled now i would run it just like it is go get'em
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i love AUTOZONE
MY CAR iS PROTECTED BY ZOOMBAK GPS LOCATOR IS YOURS?
175+served in engines built from minime to gsr/lsvtec,b16 b20vtec,d15 k24 powerhouses or just rebuilds.life is good
i like when people don't take my advice.cause then i make more money when u need it rebuild the right way!
how many speed holes do i need in my bumper,b4 i can run 15's?
i love AUTOZONE
MY CAR iS PROTECTED BY ZOOMBAK GPS LOCATOR IS YOURS?
175+served in engines built from minime to gsr/lsvtec,b16 b20vtec,d15 k24 powerhouses or just rebuilds.life is good
i like when people don't take my advice.cause then i make more money when u need it rebuild the right way!
how many speed holes do i need in my bumper,b4 i can run 15's?
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No one suspected this? I don't think i would feel to comfortable GUESSING what my engine's compression MIGHT be after the rebuild, I thought you said this guy was really good.
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onecattyKat: everybody wants colby
onecattyKat: everybody wants colby
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Originally posted by Vito_Corleone
No one suspected this? I don't think i would feel to comfortable GUESSING what my engine's compression MIGHT be after the rebuild, I thought you said this guy was really good.
No one suspected this? I don't think i would feel to comfortable GUESSING what my engine's compression MIGHT be after the rebuild, I thought you said this guy was really good.
I can't really blame him, just as I can't blame myself. This was a teaching and experimental project. And considering that the engine is running very smoothly, with no leaks, codes, etc. I think we did pretty well.
Granted the compression is high, it will take care and maintenance, especially in the Florida heat. I think it is a good challenge and learning experience for me.
My cars are brats, I am really use to them wanting special things
Plus now I can go get the Prelude I want as my daily driver
although this one was supposed to be. Live and learn.
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if you can only race me in a straight line then whats the point ...91 SMF SCCA
...91 SMF SCCAhttp://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production
Last edited by chi town brat; Dec 23, 2003 at 04:31 AM.
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Originally posted by na200whp
what ecu ? 13:1 can be steetable w/ hondata
what ecu ? 13:1 can be steetable w/ hondata
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if you can only race me in a straight line then whats the point ...91 SMF SCCA
...91 SMF SCCAhttp://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production
