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Re: ANOTHER help my 60’ post….
[Re: MR_P_BODY]
#437863
08/16/09 01:25 AM
08/16/09 01:25 AM
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Joined: Jan 2003
Posts: 5,486
SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,486
SoCal
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I don't see how you can go through the lites at 7000rpm with 4.56 gear and 32" tire????
My duster has 4.56 gear, 28.5" tire and it goes through at 7100rpm!
Glenn, I know you opened up the exhaust, but removing the exhaust completely and bolting on a nice collector extension about 10-12" would probably net you 1-2 more mph. Between the weight and the fact that your engine/cam/heads are not designed for an exhaust system should net you more HP, which likely is the reason the engine wants to be shifted lower in rpm.
I also think your suspension needs alot of tuning to really make good USE of your HP. You have to overcome a heavy car, so good working suspension is even more important than on a lighter car IMO.
Sounds like I need to be there next time you go out....would be good to go back to the races!!
Brian Hafliger
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Re: ANOTHER help my 60’ post….
[Re: MR_P_BODY]
#437864
08/20/09 08:59 PM
08/20/09 08:59 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Quote:
Quote:
My experience has been that with my car, off idle gave better traction due to time for the suspension to react. A transbrake is like dropping a clutch, shocks the suspension and might overcome too stiff of a setup. Just my opinion, because our cars are so different. More input should shed some light on this situation. How stiff are your springs? Shocks?
My springs are 90# and my QA-1s are set at 9(12 total)
with a 4-link
I've got single adjustable Vari-Shocks with 150 lb springs. Shocks are set at 9 of 16 total.
Spring platforms are about an inch up the threads (per chassisworks instructions), which yielded the eye-to-eye measurement they recommended.
Going out again saturday and plan to drop the exhaust and put the extensions back on it was dynoed with.
We'll start there and then try some shock adjustments.
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Re: ANOTHER help my 60’ post….
[Re: Dodgem]
#437866
08/20/09 11:30 PM
08/20/09 11:30 PM
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Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Didnt bother reading the other reply's so here is mine. 1000-1200 rpm flash below shift point. This would be near peak torque out put. 
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: ANOTHER help my 60’ post….
[Re: G_bob]
#437867
08/22/09 11:18 PM
08/22/09 11:18 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Got back out today, two time trials and 3 rounds of eliminations. New best, but 60's are basically the same.
Dropping the exhaust and adding the extensions saved 50 lbs, so new race weight is 3,530. On run two I dropped the cold air pressure to 12 lbs (was 13 after the run) and set the shocks at 6 clicks, which is basically the middle of the adjustments.
- 60 --- 330 --- 1/8 --- MPH --- 1000 --- 1/4 ---- MPH
1.486 - 4.160 - 6.453 - 107.50 - 8.429 - 10.111 - 133.49
1.452 - 4.099 - 6.372 - 108.10 - 8.336 - 10.006 - 134.30
1.444 - 4.113 - 6.394 - 108.06 - 8.358 - 10.115 - 124.94
1.458 - 4.118 - 6.396 - 107.81 - 8.361 - 10.030 - 134.10
1.469 - 4.131 - 6.414 - 107.48 - 8.384 - 10.056 - 133.96
Did finally notice that on the best run, when I "accidently" forgot to make the 1/2 when the light came on at 6500, and shifted at 7000, it semmed to like it, so maybe the extensions helped there. But, I made the 2/3 shift at 6700 and the needle on the tach didn't drop at all.
I'm pretty sure I need to have some converter work done and then I'll have to hold this thing back.
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Re: ANOTHER help my 60’ post…. *updated with more info*
[Re: RobX4406]
#437872
08/23/09 12:46 AM
08/23/09 12:46 AM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Quote:
Quote:
urethane-bushed rod ends
I'd get rid of those.
Rob
Yeah, I'm thinking new four-link rods and ends are in my future. I actually talked to my local chassis fab guy about that back when he did the new down bars and motorplate tabs.
Quote:
Just curious what chip are you using now. Did you ever take Bryan Sloan up on using his converter. Lots of MPH so you got a easy 9.80
Chris,
I've got a 7000 chip in it now. It just shouldn't be rev'ing that high for the mph I'm running. The TCI converter slip calculator has that at between 9 and 10 percent slippage.
Never did try out Bryan's converter. I had munsinger tweak mine. It's better than it was, but still not right. It's tighter on the big end, which is good, but flashes higher, which isn't. I think that's a piece of the 60 ft problem, along with chassis and shock issues.
After Pinks, I'm going to pull it out and have Mike work it some more. With the additional data we've got since he tweaked it, we know we need to take about 400 out of the flash and also tighten it up more.
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Re: ANOTHER help my 60’ post…. *updated with more info*
[Re: G_bob]
#437873
08/23/09 02:08 AM
08/23/09 02:08 AM
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Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
PUNK
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
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10.00 @ 134+ mph. I LIKE IT! I cant wait till you actually air it out at a track closer to sea level and not in humid and hot air. You definitely have a 9 second ride on your hands.
10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.
Heads by INDIO MOTOR MACHINE; IMM.
CP Pistons, PC Carbs.
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