entropy
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posted October 31, 2004 04:10 AM
 Edited By: entropy on 31 Oct 2004 04:14
big thanks to JohnnyCheese!
For taking so much time yesterday doing pre-build spec checks:
crank and rod bearing plastiguage - check
squish height: .043-.044" - check
cc 2 combustion chambers: 25.6cc, CR = 15.4:1!!! - check
clay in valve pockets: .085"+/- valve to piston clearance - check
As usual I did forget something when I left to return to Space City: the progress payment check. 
Too bad I'll be on airplanes for the next 2 weeks and won't get to watch JC bolt it up
You da MAN, JC!!! 
(any guesses on cold cranking pressure???)
Also: thanks to:
Buddy for lending me his MTC multistage hat,
George for Popeye's chicken,
Gary for drinks.
BTW: a cool race would be George on his short sprayed Busa vs me on the long all motor 12. whatta ya say George, race for a bud lite????
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osti33
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posted October 31, 2004 04:53 AM
15.4:1 compression!!! GAWD!!!
My guess on cold cranking psi... 295-300 psi. Am I even close??
That thing is going to be a beast Entropy.
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entropy
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posted October 31, 2004 05:18 AM
it would be cool to gather real info from folks who actually have measure their CR & CC pressure; graph it so we can know CR from psi. it out to be pretty linear?
Hey, YOU are a Mech Engineer, eh??? is it somewhat linear?
anyway 14.4:1 was 255-260psi, i guess 15:4 ought to be 265-270??? dunno???
you tell me
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osti33
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posted October 31, 2004 06:25 AM
Edited By: osti33 on 31 Oct 2004 06:55
The first problem is that compression gauges are not precision devices.
A way to test your compression gauge is to measure the same cylinder several times over a period of time and see if the measurements change.
Second, a cold engine, driven by a starter motor isn't a great approximation of a running engine.
Cams can also effect the numbers along with engine cranking speed.
If I get some time later maybe I'll see if I can plug some numbers in and give you a more definite answer on if the scale is linear or not...
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MadMike
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posted October 31, 2004 07:12 AM
Yes, I would guess 275 around...
Go Osti Go!!
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bossman12r
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posted October 31, 2004 02:10 PM
Gbusa racing a long 12 with his short Busa. That would be a great race.
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entropy
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posted November 01, 2004 08:27 AM
boss, let's add you, buddy, shane, JC, et al into the mix and we'll have our own heads up class  get a bunch of bikes which all run about 8.8-8.9's and have fun. winner gets bragging rights but has to buy dinner.
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MadMike
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posted November 01, 2004 09:48 AM
quote:
boss, let's add you, buddy, shane, JC, et al into the mix and we'll have our own heads up class get a bunch of bikes which all run about 8.8-8.9's and have fun. winner gets bragging rights but has to buy dinner.
Now that is a Great idea!!! a 8.90 "Super Steet Comp" class!!! that would be cool! Street Bikes, running heads up with an 8.90~8.80 breakout...
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entropy
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posted November 01, 2004 10:12 AM
or... no breakout time at all
if someone if "obviously" too quick, too skilled, etc, they'll get tired of buying us porkers dinner time after time, and then they'll graciously retire!
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bossman12r
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posted November 01, 2004 10:53 AM
I am down for that I own shane one already 
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entropy
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posted November 01, 2004 11:17 AM
the more i think about it, the better i like the "hi-8's misfit class"
are you at 60" and not running 8.20's or better?
you got a (any length) mojo turbo and can't break 8.70's?
you got an all motor monster but there's no class for you?
the lame, the halt, the blind, the fat, the skinny, the young, the old, even girls!; spray, turbo, motor, all lengths, all fuels, bars, sliders; who cares; just be running in upper 8's or so...
come one, come all, lets have our own "Misfits" heads up "class". Whenever at least 2 misfits are at the track, we'll race for food!
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bossman12r
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posted November 05, 2004 03:33 PM
How much HP is the new motor making, Kral?
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entropy
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posted November 06, 2004 01:12 AM
i won't know until JC bolts it together, i'm guessing 215 or so, maybe a bit more if the higher CR works out
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ninja12
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posted November 06, 2004 02:04 AM
won't that high CR be hard on bearings?
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entropy
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posted November 06, 2004 03:09 AM
we'll see
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psycho1122
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posted November 06, 2004 09:29 AM
entropy;
Is Johnny running the cooler plugs in your engine also??
What is the benefit??
I'm at 14-1 CR myself and would like to know if I could benefit.
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entropy
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posted November 07, 2004 05:51 AM
don't think he's putting in cooler plugs; never asked...
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psycho1122
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posted November 07, 2004 11:30 AM
Could you ask??
I asked Johnny on the NOS plugs thread and he did not reply...
THANKS!
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johnnycheese
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posted November 07, 2004 11:56 AM
less heat
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psycho1122
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posted November 08, 2004 08:57 AM
I understand the "Less Heat" aspect.......Thx.
I was wondering if I would benefit from a cooler plug w/ my 14-1 1270 kit.
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johnnycheese
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posted November 08, 2004 09:22 AM
only helps if you are spaying.
although I do not use the platium plugs
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psycho1122
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posted November 09, 2004 08:29 AM
THANKS
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