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08-13-2016, 01:49 PM | #11 |
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Re: suspension and ignition setup need help
No hop bars are allowed. not much else. Trying to leave with full bore timing blows to tire away.Adding weight ballast in the trunk has been suggested but putting an extra 200 lbs in the trunk and dragging it down the track is a tough pill to swallow.I know the digital msd is capable of ramping in timing in different ways I'm just not sure of all the things its capable of. Rear shock settings are another area where I know someone with more knowledge could be helpful.
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08-13-2016, 01:50 PM | #12 |
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Re: suspension and ignition setup need help
I'll bite..a little bit...L-O-L:
If you're taking timing out to hook it, I'd try the following and I'd put the timing back in: More sophisticated shocks...I suspect what you have now isn't exactly the best for the job. One of these if you can get away with it: H&R Parts & Stuff rear "sway bar" (more of an ARB than a sway bar since it does not attach to the lower rear trailing arms). Link: http://hrpartsandstuff.com Hope this helps. Wayne |
08-13-2016, 01:54 PM | #13 |
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Re: suspension and ignition setup need help
The no hop bars may allow you to get better geometry than the adjustable bars by themselves. (the rules seem to say adjustable upper arms are not legal, if they are, I wonder what else that appears to not be legal actually is?)
Have you tried changing spring rates on either end of the car? The timing curve adjustments on the MSD to allow you to launch with low timing and bring more in will simply be a matter of testing. There may be someone who can give you a better starting point than you have, but the only way to get it dialed in is to go rent the track and beat on it, to see how much timing can be brought in and how soon.
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Alan Roehrich 212A G/S |
08-13-2016, 02:02 PM | #14 |
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Re: suspension and ignition setup need help
Leaving at idle or stalled? Not hitting the tires hard uncertain if adjustable shocks are any benefit. Do they allow deep stage at these events?
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Rich Taylor I/SA - 321 Last edited by HandOverFist; 08-13-2016 at 02:05 PM. |
08-13-2016, 02:55 PM | #15 |
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Re: suspension and ignition setup need help
to me, the largest handicap to overcome is the tire. ANYTHING that you can do for a "sticky" tire will be a huge help.
Experimenting with the above mentioned suggestions AND a better tire holds potential to greatly increase performance. |
08-13-2016, 02:59 PM | #16 |
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Re: suspension and ignition setup need help
and speaking of weight, ANY weight removed from driver forward is good. If you remove 10 pounds from the front, add it back to the rear.
A "ballasted" trunk lid is good. [meaning adding weight high and rearward] |
08-13-2016, 03:19 PM | #17 |
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Re: suspension and ignition setup need help
It sounds like you are running an automatic..
In this case, the rules (as posted here), leave a lot of room for experimentation. What do the fast guys use? 400?, 2.20 low gear?, 350? ..Aluminum drums (I'll bet they do..How about a Powerglide? Converter rule is wide open..Again, what do the fast guys use?
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08-13-2016, 03:55 PM | #18 |
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Re: suspension and ignition setup need help
Yes. That was last summer at englishtown. Much appreciation for all the responses so far.
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08-13-2016, 04:08 PM | #19 |
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Re: suspension and ignition setup need help
Wow. lots of feedback here. Front springs are Santhuff 250lb. rear springs are stock. Front shocks are QA1 single adj. Rears are QA! double adj. Adjustable upper arms are technically not within the rules but are not enough of an infraction that anyone complains. 6 inch rims are all that's allowed but most racers run 7s. The basic premise of the class is that the cars appear stock to the casual observer. I'm running a turbo 400 with a 2.10 first gear with all light weight internals as well as a 12 bolt with 4.56s with a spool and gun drilled axles.
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08-13-2016, 04:11 PM | #20 |
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Re: suspension and ignition setup need help
I leave off the foot brake at 2000 rpm pulling out 15 degrees of timing for 1.5 seconds.
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