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View Poll Results: 114 or 112 for low rpm power
114
15
45.45%
112
18
54.55%
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Cam LSA

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Old 12-04-2012 | 06:41 PM
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Originally Posted by ICDEDPPL
Why is Mild Thunder always starting trouble?


Get back to work!!!
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Old 12-04-2012 | 06:45 PM
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Not sure If I mentioned it earlier in this thread, but these procharged engines had a cyl cranking pressure of 112psi. That was with the 252/262 cam and dished piston combo.

Take the blower off and should run fine on 84 octane all day.

Last edited by MILD THUNDER; 12-04-2012 at 06:49 PM.
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Old 12-04-2012 | 06:53 PM
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Also, to help clear the air, I have been in contact with cam guru Bob Madera about this thread and Joes motors as of the weekend. Our conversations will stay between him and I, but all I can say is Bob is a class act. Theres a reason he's been a oso favorite for many years.
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Old 12-04-2012 | 06:56 PM
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Originally Posted by MILD THUNDER
Also, to help clear the air, I have been in contact with cam guru Bob Madera about this thread and Joes motors as of the weekend. Our conversations will stay between him and I, but all I can say is Bob is a class act. Theres a reason he's been a oso favorite for many years.
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Old 12-04-2012 | 08:31 PM
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Originally Posted by MILD THUNDER
Not sure If I mentioned it earlier in this thread, but these procharged engines had a cyl cranking pressure of 112psi. That was with the 252/262 cam and dished piston combo.

Take the blower off and should run fine on 84 octane all day.
was that with the blower tubes off and the throttle @ wot? cant get a good reading with out air..
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Old 12-04-2012 | 08:51 PM
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Originally Posted by MILD THUNDER
7500rpm would sound cool, for a few seconds at least !
I run mine there
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Old 12-04-2012 | 08:58 PM
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Originally Posted by GPM
I run mine there
6200 for me,,last 12 yrs..run big trouble even higher,,like 8700 but for 6.82 seconds..
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Old 12-04-2012 | 09:00 PM
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Originally Posted by GPM
I run mine there
How many hours you getting out of your valvetrain?
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Old 12-04-2012 | 09:06 PM
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Originally Posted by mrfixxall
was that with the blower tubes off and the throttle @ wot? cant get a good reading with out air..
I didnt do the actual test. Not sure who did. But even when you plug the numbers, low static compression combined with a late closing intake valve, with his stroke and rod length, it comes out to 120psi cranking.

This calculator is pretty close. My calculated numbers on my engines, and what they actually show on the gauge, is within about 5psi.

http://www.wallaceracing.com/dynamic-cr.php
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Old 12-04-2012 | 09:18 PM
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[QUOTE=MILD THUNDER;3826498]How many hours you getting out of your valvetrain?[/QUOTE
Never kept track of the hours, a couple of seasons which aren't that long in Pa.
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