Steve's 1989 Lebaron 2.2L

[69viper]

I thought I would post an update on the car.
I was having a problem with a miss fire above 6000rpm. I thought I had it fixed when I switched out 3 bar map with another one. The miss fire came back and I had tried everything. I even changed out the valve springs and it was still there.
So I decided to drop the rpm by changing the trans gears back to stock (3.05 final ratio). The car ended up liking the change and has run 11.89 @ 118.80. The 60' are suffering with 1.95's.

I ended up gaining 4 mph by upping the timing. This g-head really wants a bunch of timing.

Back to the misfire, I think I found it now. The center coil post on top of the distributor cap was loose. The coil wire was wobbling all over. I was running a cap and wires from Richard Bryant. I ordered a new set from him. He now makes some slick terminals that just snap right in. With the new cap and wires, the car revs right to 7000 now.

About 30 runs on the car this year, the trans has been holding up. (knock on wood). I'm running ATF+4 and haven't been doing a burnout before the run. Not doing a burnout is probably hurting the 60' but the trans needs to stay together.

I hope to get out to the track this Friday night for some cam timing testing.

[turboshad]

That's great to hear Steve. I think I'm finally going to make it out Friday as well so I should see you there.

[turbovanman²]

Awesome, glad to hear. What was your trans ratio prior to the change? I am considering putting my .91's back in, lol.

I found burnouts don't break anything, its the 1-2 shift as I broke another output shaft last Friday, Getting one made out of 300m,

[69viper]

That's great to hear Steve. I think I'm finally going to make it out Friday as well so I should see you there.

The forecast looks good for Friday. We should have a corrected altitude closer to 2000', instead of 4000'. Hope to see a 10 sec pass from you.

Awesome, glad to hear. What was your trans ratio prior to the change? I am considering putting my .91's back in, lol.

I found burnouts don't break anything, its the 1-2 shift as I broke another output shaft last Friday, Getting one made out of 300m,

Sorry to see the carnage. The van must be making some power. I spent the money on an input shaft but never thought to get an output shaft. I may have to get one too.

I was using the 1.22 gear set, so 3.50 final ratio. The datalog shows the g-force climbing off the line then decreasing. It should really be max g's at the launch so I think the orange bottle in the trunk will fix that.

I didn't want to heat the trans up with a burnout. I figured a cooler trans is a happy trans. Since it is near the end of the year, I can lean on the car a bit harder.

[turbovanman²]

Hmmmm, orange or blue?

Anyhow, I lied, I just took it apart, broke the first planetary hub and stripped the shaft.

Fingers crossed you run some 10's,

[turboshad]

The forecast looks good for Friday. We should have a corrected altitude closer to 2000', instead of 4000'. Hope to see a 10 sec pass from you.

Ya, I'm seeing a nice hot day and track with some cool fall evening air. I'm with Simon, time for you to join me in the hunt for 10s.

[69viper]

I changed the gearing back to 3.50 final ratio since the misfire is solved.

I started doing a burnout before the run since its the end of year. I finally was able to get the car to hook on the 3rd run. I did a really good burnout and was in the right lane.

The small tuning changes have been increasing the MPH. I have been trying to straighten out the rpm curve by increasing or decreasing timing at different sections in the curve.
The AFR was at 11.0-11.1 but seems to be dropping to 10.7 - 10.8 above 6100 rpm. I started taking some fuel out using the Pumping Efficiency curve but it didn't do much. The last run I took fuel out using the Full throttle curve and it was about a solid 10.8 now. Looks like I can pull some more fuel in that region.
These are the runs that I made.

(corrected altitude was 3900-3500)
Time: 20:08:18 21:41:07 22:49:49 23:26:13
Reaction Time .032 .721 .088 .110
60 ft. ET 1.887 1.953 1.799 1.953
330 ft. ET 5.015 5.081 4.898 5.048
660 ft. ET 7.615 7.675 7.470 7.608
660 ft. MPH 95.450 94.570 95.520 95.940
1000 ft. ET 9.876 9.918 9.699 9.828
1320 ft. ET 11.785 11.817 11.592 11.711
1320 ft. MPH 117.86 118.46 118.62 119.00
I really need to work on some stiff rear springs to get the car to hook. (winter project)
One or two days of racing left. Oct 1st and 2nd. My goal for the car was 11.50 so I hope that the air is good next weekend. I will be trying out the nitrous on the last few runs for some fun.

[GLHNSLHT2]

awesome

[bakes]

Way to go!!!!!!!
what was the miss fire fix i think i miss that !!!!

[69viper]

Way to go!!!!!!!
what was the miss fire fix i think i miss that !!!!

Post 41, it was the distributor cap coil terminal.
I guess if I want to race in Mission, I will have to put a roll bar in the car. Should be 3 tenths faster at sea level. (-1 tenth for added weight of the bar)

[turboshad]

Wicked job Steve!! It sounds like allot of people were hookoing up that night, maybe I should have been out there. So does that mean you're thinking of making next weekend? I'm still "on call" but I'm really hoping everything goes down by then and I can join you.

[turbovanman²]

Way to go,

Went out tonight, 3 runs, best was 13.7, fingers crossed the last 2 Street Legals stay dry.

Hope we see you again next year,

[69viper]

Way to go,

Went out tonight, 3 runs, best was 13.7, fingers crossed the last 2 Street Legals stay dry.

Hope we see you again next year,

Right on, the van is moving now!
I will be coming out to Mission next year for sure.

[turbovanman²]

Right on, the van is moving now!
I will be coming out to Mission next year for sure.

Your car is moving, the shed, not so much.

We'll be here waiting,

[69viper]

I had some sucess at the track this weekend. It was cold out and I was getting over a cold. That wasn't going to stop me from attending the last event at the track.

I'm still having issues with hooking the car up. The first run I tried a 11 psi in the slicks and got wheel hop. I checked the datalog at the end of the run and the AFR was 11.9-12. I'm usually running around 11.3-4 so the air must have really been good. 2200 ft good. It looks like I gained just over 1 mph with that leaner mixture.

I added about 2 psi fuel pressure for the second run. Guess who pulls up next to me. The insanely quick Shadow! Mr Crash Box lol. I knew I had to cut a good light. (0.061 not bad but didnt help since he ran his PB) I ended up spinning with a 1.98 60'. AFR was 11.6-11.7

The third run I added more fuel using the Fuelfullthrottle curve and switched to the left lane. AFR 11.2 Left lane was better for the launch.

Fourth run I took a little fuel out using the same curve. New PB 11.584 @ 119.90 AFR 11.4

The goal for the car was an 11.5 so the goal was finally achieved.

The fifth run I turned back the timing and opened up the NOS bottle. I decided to not purge so it wouldn't hit right away. Car launched as usually off the line and then pulled like never before. Felt good.

I looked at the datalog and everything looked good so it was time for a full NOS pass. It started to rain a bit and the track closed the event. I guess there is always next year.

Time 11:05:17 12:00:10 12:56:09 14:45:44 15:48:09
Lane R R L L L
Reaction Time .177 .061 .182 .432 .841
60 ft. ET 1.937 1.984 1.845 1.900 1.902
330 ft. ET 5.020 5.067 4.915 4.951 4.939
660 ft. ET 7.550 7.605 7.481 7.498 7.436
660 ft. MPH 0.000 0.000 95.470 96.090 99.020
1000 ft. ET 9.746 9.804 9.703 9.708 9.582
1320 ft. ET 11.610 11.671 11.585 11.584 11.401
1320 ft. MPH 120.46 120.43 119.53 119.90 123.69

---------- Post added at 10:39 PM ---------- Previous post was at 10:31 PM ----------

[bakes]

Hey when did you get the carbon hood ?

Nice runs the both of you!!!!!!

The baby love the bottle EH!!!!!!?

[69viper]

Hey when did you get the carbon hood ?

Nice runs the both of you!!!!!!

The baby love the bottle EH!!!!!!?

Thanks Bakes!

Say hi to Boost Geek for me.

Hood and trunk lid are fiberglass. They aren't painted yet. Waiting for them to de-gas.

A little sip on the bottle was fun!

[turbovanman²]

Damn, DJ just takes off like a Jet!!!!

Nice runs, both of you,

[Shadow]

Very nice runs and huge congrates for reaching you pre-set goals! I happen to know EXACTLY how that feels!

[blk86trbo]

Those are some great vids, very fun to watch, congrats!