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De-tuning my 2001 ilmor supercat 517

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De-tuning my 2001 ilmor supercat 517

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Old 12-23-2014, 09:18 AM
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Originally Posted by vintage chromoly
Leaning toward having new pistons made.probably a better final product and cheaper in the end.
thats the best route to go.
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Old 12-23-2014, 09:25 AM
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what kind of hp/tq are you looking for or want?
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Old 12-23-2014, 10:23 AM
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Originally Posted by sutphen 30
what kind of hp/tq are you looking for or want?
Isn't the answer to that always - as much as possible.
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Old 12-23-2014, 04:59 PM
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Thanks for the interest and replies guys.
Here's the cam doctor results from the supercat cam:



Just a tad too big.
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Old 12-23-2014, 05:11 PM
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How many rom are you going to spin this thing?
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Old 12-23-2014, 05:27 PM
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Originally Posted by Black Baja
How many rom are you going to spin this thing?
6000 rpm max. 3500 to 4000 cruise.

That cam doctor is from the supercat cam, not the cam from bob.
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Old 12-23-2014, 09:52 PM
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Originally Posted by vintage chromoly
6000 rpm max. 3500 to 4000 cruise.

That cam doctor is from the supercat cam, not the cam from bob.
well now we know what cam to run for 7500rpm.
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Old 12-23-2014, 09:53 PM
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Originally Posted by Black Baja
Isn't the answer to that always - as much as possible.
very true but w/ a max of 10-1,,just asking.
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Old 12-23-2014, 10:17 PM
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Originally Posted by sutphen 30
very true but w/ a max of 10-1,,just asking.
In my case, I'm not going for maximum hp and torque. This is going into a 24 foot pleasure boat with a bravo drive. We think it will wind up at about 700 HP and 650 fT lbs of torque.
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Old 12-23-2014, 10:45 PM
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what did these motors make originally?
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