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Author
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Topic: Help!!!!! Pinging at 3700 any ideas
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04 Mystic
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Member # 220
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posted
 
 
Well the car is running at Apex but they have no idea why its pinging at 3700rpms. They have checked everything they can't find anything.
Any help would be great!
[ April 14, 2002, 09:45 PM: Message edited by: 4ADG952 ]
Posts: 234 | From: S.S.F. | Registered: Apr 2001
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Stimson
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Member # 51
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quote:
Originally posted by 4ADG952:
Well the car is running at Apex but they have no idea why its pinging at 3700rpms. They have checked everything they can't find anything.
Any help would be great!
Well you ping for a few common reasons....
A) Not enough octane for the application
B) Too much timing advance for the given application and octane
C) Not enough fuel for the application (lean air fuel ratio)
D) Contaminants like oil, carbon build up or "strands" of metal hanging out in the combustion chamber.
If (A) and (B) are your problem, increase the octane or lower the timing.
If (C) is your problem, adress your fuel delivery
Are you running the proper heat range spark plugs?
How much initial timing? Are you using the MSD boost retard? What is it set at?
I forgot what your combo is..... are you the GT40X headed blown 347 guy? If so, what is the compression ratio of the motor? The X heads come in two combustion chamber sizes if I remember right. Which do you have?
Posts: 2373 | Registered: Jun 2000
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04 Mystic
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Member # 220
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posted
Here is the list of mods that have been done. So far the car has not left Apex to date. This was a 95 5.0 Vortech S Trim with 85k on it. I thought it was time to do some work. I am now getting a little down about it, there seems to be something wrong with the combo I chose.
Edelbrock 6028 Heads
Edelbrock Performer RPM Upper and Lower intake
Fel-Pro LocWire head gasket
Gaskets, head-to-intake
FMS rocker arms, 1.7, Cobra
FMS fuel injectors, 42 lb
Lifters and Rods
Pro-M 80mm Race MAF w/ filter
Power Pipe, 94 ceramic
Crane Hl-6 ignition, black
Crane Hl-6 adapter
Crane PS-91 coil Aeromotive fuel pressure regulator,94,98
Thermostat, 180°, high-flow
Thermostatgasket
FMS headers, 94 ceramic
Bassani header gaskets, 5.0/5.8
APEX header bolts w/ washers
Amsoil 20W50 Series 2000 oil
Amsoil oil filter, 5.OL (long)
Royal Purple Super Coolant additive
RACE custom chip, 5.0, 94/95
APEX dyno tuning w/ air/fuel ratio
[ April 14, 2002, 11:27 PM: Message edited by: 4ADG952 ]
Posts: 234 | From: S.S.F. | Registered: Apr 2001
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Stimson
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Member # 51
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posted
Doh, I always confuse you with someone else!
So did Byron tune it on the dyno?
Posts: 2373 | Registered: Jun 2000
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04 Mystic
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Member # 220
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posted
He did but he had said to Bill that there is something wrong but he does not know what it is. Bill said there at a loss, but going to look at it on Tuesday. Byron will be there too. I hope they can find out what it is. I hate not having a car now for 3 weeks
Posts: 234 | From: S.S.F. | Registered: Apr 2001
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