Help! Sick Cobra!

[Machinator]

I cut a 2.0 sixty foot and ran the 1/8th in 7.88 and the really bad thing is the car only trapped 92.33. I powershifted and cut a good sixty considering the surface of the track was so cold. My car just doesnt have any topend, I have alot of mods and it should be running faster I mean for crying out loud upper pulley non ported cobras are running faster. Plus my car has miss.......crap. This sucks and I am scared of what it might mean.

 

[Machinator]

Come on somebody at least say something, I am sick to death of this!

 

[sambandit]

What part of the country are you in and any idea of what the DA might have been?

 

[Tranzlucent]

slipping clutch?

 

[Machinator]

What part of the country are you in and any idea of what the DA might have been?

I am in eastern NC right now, da might have been 250ft max. The car has had a slight miss at idle and it gets worse up to about 2500 rpm where I can no longer tell because the exhaust is so loud. I think mabe one of the valves is not closin all the way or mabe my tune is off or well crap mabe the car is down on compression which means I need a new motor.

 

[Machinator]

slipping clutch?

I have a dfx with 500 miles on it.

 

[BradN01]

Plugs? What's your A/F?

 

[TEABG]

Plugs ? Gap ? Lot Of Heat In The Eaton ? Cooling Mods Besides The LFP ?
Run (1) Bottle Of Red-line Watter Wetter In The I/c With 25% Distalled Water. Run (2) Bottles Of Red-line Watter Wetter In The Raditor With 25% Distalled Watter. Plugs .38 Gap. Oil Go With Syn 5/20 Just Like The Factory Recommends. MILES ON THE CAR? PERSONALLY I WOULD GO WITH A 2.93" WITH THE LOWER YOU HAVE. RIGHT NOW YOUR GAINS ARE BEING AFFECTED WITH THE HEAT THE EATON IS GENERATING. LITTLE OVER-KILL WITH SPINNING THE EATON THAT FAST. EPICALLY IF YOU ARE CONCERENED ABOUT YOUR TOP-END LIKE YOU ARE.

 

[CobraBob]

I assume you are using a 1/8 mile track since you mentioned only your 1/8 time. What MPH should you be seeing in the 1/8 with your mods? I'm not familiar with 1/8 mile tracks.

 

[FireRed04Vert]

First things first....find the miss. Anything else you try and fix or find won't matter until the obvious is repaired. Check your plugs and compression. If that doesn't give you a definitive answer, then have the motor leaked. If everything still checks out, start looking at ignition and fuel. As a matter of fact, low fuel pressure would cause low trap speeds....what are you carrying as far as fuel pressure? But the pressure would have to be REALLY low to cause a miss at idle...and it really wouldn't feel like a miss..it would be more of an idle quality issue like surging and dying.

 

[Machinator]

First things first....find the miss. Anything else you try and fix or find won't matter until the obvious is repaired. Check your plugs and compression. If that doesn't give you a definitive answer, then have the motor leaked. If everything still checks out, start looking at ignition and fuel. As a matter of fact, low fuel pressure would cause low trap speeds....what are you carrying as far as fuel pressure? But the pressure would have to be REALLY low to cause a miss at idle...and it really wouldn't feel like a miss..it would be more of an idle quality issue like surging and dying.

Wow I feel like a tard, I dont have a fuel pressure gauge. As a matter of fact the car does surge and die sometimes, especially after I left the track last night. Rick said that I didnt need the boostapump that I have, he said my fuel was fine, it is installed but is at the lowest setting.

 

[Machinator]

Well guys the new motor should be on its way in a couple of weeks, I am taking the car home to Texas to Murillo's.