Tuning, props, AFRs

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07-31-2013, 06:00 PM

#51

MILD THUNDER

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Quote:

Originally Posted by rv

Video on post #1 is kinda scary, oil temp pegged, 1 point different AFR left/right bank, blower motor on Chicago gas in 12's and 13's.
Top end AFR looks good, mid-range way lean for gas around here.

I agree. We haven't touched the primary jets, or power valves in the primaries. Glad they haven't burned up yet, they had to have been this way for a while. All we did was remove the rear power valves that were giving us the mid 9 afr at 4000+.

07-31-2013, 06:30 PM

#52

ICDEDPPL

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One problem solved

I took apart the oil stat and that opened at 175* right on the money so having eliminated that, step 2 and the problem:

Gauge seems to get worse exponentially, 20* off at 160*.

at 174* its 55* OFF!!!!

Wrong sender? Bad gauge??

Last edited by ICDEDPPL; 07-31-2013 at 06:35 PM.

07-31-2013, 06:46 PM

#53

MILD THUNDER

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Check ground to gauge behind dash. Excellent progress Dan.

07-31-2013, 07:03 PM

#54

kvogt

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good find. I'm sleeping better now

07-31-2013, 08:03 PM

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Glad to see oil temp really wasn't that hot. Good detective job! There are a couple resistance ranges in temp senders. You may want to contact Auto Meter and see which one works with their gauge and measure yours. Or take shot and buy their sender and repeat your water temp test.

Last edited by rv; 07-31-2013 at 08:28 PM.