Made it to the track today

[b4black]

I finally made it to the track with the Chicagoland GSCA club and made a clean run with the '83 T Type. The car is still "stock" with the only mods being a K&N cone, gutted cat, 10 psi max and some suspension mods to help it hook with the open rear.


BEST RUN
Byron Dragway 10/6/02

R/T 0.717
60' 2.173
330 6.401
1/8 10.005
MPH 67.61
1000 13.182
1/4 15.899
MPH 82.55

For Reference - Popular Hot Rodding 4/83; 1983 Regal T Type - 16.95@ 79.96


The best run was the first. As the temps warmed up, the stumble I had last time came back. You can see that while I'm beating the PHR time by a full second, but I'm only running ~2.5 mph better. I'm weak on the high end. I need to figure out the stumble, which comes on about mid-track, mid-second gear. The 60' is great.


I recently went to a colder plug with a tighter gap (43's @ 0.035) and it made no change. It's not knock. It happens throughout the RPM range, so I leaning towards my WOT fuel mixture. I need to check my O2 readings.

I was hoping for a low 16. The high 15 was great. I can't wait to see what I can do once I correct the stumble and up the boost some.

 

[fc227]

You could be running a little fat, If it likes the cooler weather.

Was this pass on pump gas? , Can you turn the Boost up to 15#? This will get you into the mid to low 15's.

Good pass by the way.

 

[Ttype83]

Check your volts too at higher RPM's. Are you sure it's not at a Rpm range, say above 4200.

That is a very good 60' time as well as R/T

 

[unboostedV6]

Like Fred said, lean it out a notch. Although colder weather is coming soon. GB

 

[b4black]

Put the scan tool on it last night and you guys are right - I'm too fat. O2 Volts above 0.9 at times.

It has the stock rods and hanger. I wish I could turn up the boost, but I think my exhaust/DP will hold me down. I think I'll lean it out a touch, and then figure out where the restriction is.


I think I'll be able to get to the track once more before the season's over.

 

[fc227]

Do you need some hangers ? I have a some.

 

[b4black]

Thanks, but I have a small collection of rods and hangers from my monthly trips to the U-pick-it yard. Leans are much easier to find than riches.

 

[Ttype83]

Originally posted by b4black
Put the scan tool on it last night and you guys are right - I'm too fat. O2 Volts above 0.9 at times.

It has the stock rods and hanger. I wish I could turn up the boost, but I think my exhaust/DP will hold me down. I think I'll lean it out a touch, and then figure out where the restriction is.

We both have the same problem. I bet it has to do with the opening the secorderies more. I think the a V or Y hanger and adjusting the sec spring, my has little pressure on it. I'm going to readjust it too.
Jim