suspension and ignition setup need help - Page 2

marina blue · 08-13-2016, 01:49 PM

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.

Wayne Scraba · 08-13-2016, 01:50 PM

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

Alan Roehrich · 08-13-2016, 01:54 PM

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.

HandOverFist · 08-13-2016, 02:02 PM

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?

Woodfin · 08-13-2016, 02:55 PM

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.

Woodfin · 08-13-2016, 02:59 PM

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]

Mark Yacavone · 08-13-2016, 03:19 PM

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?

marina blue · 08-13-2016, 03:55 PM

Yes. That was last summer at englishtown. Much appreciation for all the responses so far.

marina blue · 08-13-2016, 04:08 PM

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.

marina blue · 08-13-2016, 04:11 PM

I leave off the foot brake at 2000 rpm pulling out 15 degrees of timing for 1.5 seconds.

08-13-2016, 01:49 PM	#11
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	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.

08-13-2016, 01:50 PM	#12
Wayne Scraba Member Join Date: Mar 2002 Location: Canada Posts: 152 Likes: 373 Liked 186 Times in 48 Posts	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
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,105 Likes: 1,564 Liked 1,789 Times in 408 Posts	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. __________________ Alan Roehrich 212A G/S

08-13-2016, 02:02 PM	#14
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,651 Likes: 8 Liked 33 Times in 16 Posts	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? __________________ Rich Taylor I/SA - 321 Last edited by HandOverFist; 08-13-2016 at 02:05 PM.

08-13-2016, 02:55 PM	#15
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 534 Likes: 8 Liked 264 Times in 103 Posts	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
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 534 Likes: 8 Liked 264 Times in 103 Posts	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
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,809 Likes: 2,900 Liked 5,113 Times in 1,948 Posts	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? __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

08-13-2016, 03:55 PM	#18
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Re: suspension and ignition setup need help Yes. That was last summer at englishtown. Much appreciation for all the responses so far.

08-13-2016, 04:08 PM	#19
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	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.

08-13-2016, 04:11 PM	#20
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	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.