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Rob's 1981 Dodge Challenger
https://www.slantsix.org/forum/viewtopic.php?t=46322		 Page 55 of 61
Author:  Rob Simmons [ Tue Aug 27, 2024 4:43 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Thanks Will.

If all goes well, I’m gonna look to re-set your 11.44 and 119 MPH records in the 1/4.

It starts to feel a little light at 97 MPH though.

I’ll add the second battery… I didn’t ever think I would have a race car that actually needed a rear spoiler, but maybe it would help…
Author:  Dart270 [ Wed Aug 28, 2024 11:49 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Yep, good to get some kind of spoiler on there, especially for 1/4 mile. Let's talk on Saturday at CC... Very exciting!
Lou
Author:  Rob Simmons [ Wed Aug 28, 2024 4:58 pm ]
Post subject:  Re: Rob's 1981 Dodge Challenger
I changed the oil, added the second battery and re-weighed it.

With a simulated 200 lbs in the driver seat (floor jack, battery, 5 gallon fuel jug, etc.) it comes in at 2,332 lbs.
Author:  slantzilla [ Wed Aug 28, 2024 5:02 pm ]
Post subject:  Re: Rob's 1981 Dodge Challenger
With that squared off back window you may need a wing. Mike put one on the Valiant because it started getting light when he was spraying it.
Author:  Rob Simmons [ Wed Aug 28, 2024 5:10 pm ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Yeah,… It starts to feel a little light at the top of the 1/8th…

Not sure I want to try for 1/4 mile until I feel it out a bit more.

I s’pose I could steal a spoiler off the Neon or MR2… :|
Author:  Rick Covalt [ Wed Aug 28, 2024 5:52 pm ]
Post subject:  Re: Rob's 1981 Dodge Challenger
What tire pressure are you running?
Author:  Rob Simmons [ Wed Aug 28, 2024 6:59 pm ]
Post subject:  Re: Rob's 1981 Dodge Challenger
I believe Howard set them at 10 or 11…. I will verify. I have tubes, so I can drop the pressure more.
Author:  slantzilla [ Wed Aug 28, 2024 8:06 pm ]
Post subject:  Re: Rob's 1981 Dodge Challenger
You using radial or bias slicks?
Author:  Rick Covalt [ Thu Aug 29, 2024 3:26 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Less pressure means more squirrely at the big end maybe.
Author:  slantzilla [ Thu Aug 29, 2024 4:52 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Yes, too little pressure will make the car "squirm", especially when you get off the throttle at speed.
Author:  Rob Simmons [ Thu Aug 29, 2024 6:13 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
The car didn’t feel really squirmy up top or move around when I let off. It just felt “light”… :?

Kinda like you feel when you’re driving in the rain and just start to hydroplane…. That “Ooohhh… Here we go!” Kinda thing.

The last pass when it got loose and I had to lift was most likely the dew on the track. There weren’t many cars and it was just test & tune, so no track prep to speak of.
Author:  Rob Simmons [ Thu Aug 29, 2024 6:14 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
The tires are M/T radials I believe. I’ll verify.
Author:  Rob Simmons [ Thu Aug 29, 2024 6:47 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Quote:
Quote:
Quote:
I've got an 8000 if you're brave.
Stan might want that one! :D :D Sorry Stan I lost my mind there for a second. :D
Right now I have my high side (over rev) set at 7200 I think. Shifting at 6700. :mrgreen:
My highest chip is 7000. The shift light is set at 5800, but it’s still pulling beyond that. Soooo,… I tried to ignore the bright yellow light and shift by feel… I hit the 7000 rev limiter a couple times.

I would adjust the shift light, but the button fell out somewhere… :roll:
Author:  slantzilla [ Thu Aug 29, 2024 7:57 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
Quote:
The tires are M/T radials I believe. I’ll verify.
Radials will need more air than a bias.

The pics in your garage of the burnout showed low air in the pattern.

BUT, that does not take away from the fact that in the 1/4 you will probably need a wing on the back to keep it straight. That's a fast little hot rod.
Author:  Rick Covalt [ Thu Aug 29, 2024 9:39 am ]
Post subject:  Re: Rob's 1981 Dodge Challenger
If you all get to run, Hopefully someone can get some video of everyone.
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