Rat running hotter now?
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,002
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From: Bay City MI.
Rat running hotter now?
We adjusted the four corner idle screws on my 850DP, to about 3\4 turn out in front and 1\2 turn in the secondaries. Now at idle the car runs hotter, does a lean mixture make for hotter conditions? What are the factory settings for the four idle screws....My twin spal fans have always been plenty for cooling but yesterday at idle they would not cool the car down?
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Rat running hotter now? (467-Ratman)
We adjusted the four corner idle screws on my 850DP, to about 3\4 turn out in front and 1\2 turn in the secondaries. Now at idle the car runs hotter, does a lean mixture make for hotter conditions? What are the factory settings for the four idle screws....My twin spal fans have always been plenty for cooling but yesterday at idle they would not cool the car down?
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Rat running hotter now? (467-Ratman)
Holley intend the idle screws to be out 1 1/2 turns. If you are at 3/4 or 1/2 turn out then the idle circuit is still too rich, If you are on the transfer slots fuel is being sucked out of them and the idle screws can't do their job.
