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Ok so Kibort you got the 928 rules to include the stroker engine ??? Or are you just cheating ?
yes, that is the plan....... There is plenty of room for racers. that's is not an issue. The issue is getting the spec created for the car based on what ran at WCGT. Cars are ALL over the map as far as mods now.
Originally Posted by IcemanG17
MK
Performance Shock at Sonoma is your best bet.....they do good work fast
Ok so you plan on running a cheater engine......wonder how the guys you might bump out of the championship race will feel anout that.
Probably the same as Mark taking my prize money in speedGT ....which is , I don't care. again, there are no "spots to bump". you do the qualifying events, you make it to the championship race. All the cars go through tech.... if you dont meet the specs, they DQ you. several cars are out of spec in front of me and i could care less. Again, I am still negotiating for all the mods of the 928 from SpeedGT and they have only given the 928 a few. some i would like to take advantage of someday............if i continue to race the 928.
Last edited by mark kibort; 10-09-2018 at 08:48 PM.
Thought you had just replaced the shocks. How did you miss this?
Carl has been selling his race shock package with the smaller-daiameter springs r a while. He may have your replacements available off the shelf. Worth a PHONE CALL.
Mark, I don't have a copy of the VTS for the Zombie, but the closest I can get to it is that it is hyperlinked on the 2004 Speed World Challenge VTS page. I got to this link via the Wayback Machine at this URL:
Thanks Rob, i did the crawler too, and got that ,, ,plus i found the weights and rim sizes too......... the main thing, is seeing the car on the track, showing the times of marks car though historical records, and see how my car performs with the mods it has.... it should be albe to get at least many of the mods Mark A had... that carbon fiber intake, which i wanted , was on one of the addendum sheets.
however, unless you are going to make 500hp, its not going to be competitive anyway. (or down to 2600lbs)
MK
Originally Posted by Rob Edwards
Mark, I don't have a copy of the VTS for the Zombie, but the closest I can get to it is that it is hyperlinked on the 2004 Speed World Challenge VTS page. I got to this link via the Wayback Machine at this URL:
The idea of running a standard-diameter spring means it's a lot easier to find and install different rates tailored for the different tracks you drive. Along with tuning shock and anti-rollbar settings, adjusting spring rates is critical to fine tuning the suspension package to the track and driver preferences.
Carl's packages support that same spring diameter you are using now. The smaller-than-928 diameter allows more room in the wheelhouse too.
The idea of running a standard-diameter spring means it's a lot easier to find and install different rates tailored for the different tracks you drive. Along with tuning shock and anti-rollbar settings, adjusting spring rates is critical to fine tuning the suspension package to the track and driver preferences.
Carl's packages support that same spring diameter you are using now. The smaller-than-928 diameter allows more room in the wheelhouse too.
oh yes, that was one of the reasons i bought the set up. smaller more compact and somewhat generic fit for other springs. i dont know if i need different spring rates, as the indicators seem to show its working well. Anderson went down in the spring rate very close to mine and found some handling gains. so if anything , i might go softer. 775F/500R right now. its the shocks im primarly worried about, first because they just blew out after one race, and the body is so long, that the bumpstops are part of the suspension. (not good) I might raise the front ride height a bit and carve out that cavity for the bump stop to fit in and give a little more travel. Ill see what the Koni shop can do.
I misunderstood what you offered from Carl. yes, the small diamter springs might be the same i use now, but the shocks maybe a better fit for a race car.... what i should do, is do what anderson did and weld up proper race car shock mounts...
a few of the cars in the runnoffs at indy were in my race at Auto club speedway. the top 10 car (old world challenge GT vet #35) and one of the last place cars (blue and yellow transam 2 car #66) are seen in the first lap. I think i can take on the #66 at Sonoma and maybe a few others due to the technical nature of the track.
Best of luck, Mark. Proud to have you carry the 928 torch to them! Keep going!
Thanks Carl... proud to carry it like you as well! Hopefully, got all the bugs out and can take advantage of some really good tires. pretty excited to have a chance to get a new best fast lap time at Sonoma!
yes, the small diameter springs might be the same i use now, but the shocks maybe a better fit for a race car.... what i should do, is do what anderson did and weld up proper race car shock mounts...
This^^^. Make the height a little taller on the tower so the shocks are working a little closer to their design length with your car at race height. Fit better bump stops too. It's the shock slamming in compression that's blowing the seals at the end of the piston. And/Or, have them shorten the rods so the piston doesn't go all the way to the bottom on full compression. A higher front spring rate will help save the shock if this is a chronic problem. Nobody really wants to include the bump-stops in the rate calculation, as it becomes extremely non-linear once you are into the bumpers. You'd like your "normal" ride height to coincide with about 2/3 shock compression travel rather than the 3/4 to 7/8 you are probably at right now. That will change the shock damping rate as you move further out on the metering rods, be aware.
What do you mean...Ive checked the alignment, and it looks good. did you mean since i removed the shocks? that shouldnt change any settings, but ill check again. thx!!
Originally Posted by dr bob
This^^^. Make the height a little taller on the tower so the shocks are working a little closer to their design length with your car at race height. Fit better bump stops too. It's the shock slamming in compression that's blowing the seals at the end of the piston. And/Or, have them shorten the rods so the piston doesn't go all the way to the bottom on full compression. A higher front spring rate will help save the shock if this is a chronic problem. Nobody really wants to include the bump-stops in the rate calculation, as it becomes extremely non-linear once you are into the bumpers. You'd like your "normal" ride height to coincide with about 2/3 shock compression travel rather than the 3/4 to 7/8 you are probably at right now. That will change the shock damping rate as you move further out on the metering rods, be aware.
Great ideas.... i didnt think of that, and maybe thats what happened. Hey, what if they cut down the big rubber bushings about half and re install? that way it will greatly increase the travel. ill have to put the swaybar to full stiff, which might help as well . yes, i saw some of that data on the shock dyno graph too. Ill have to check if they were testing at variable distances of travel. certainly dont think the advantage of being .5 " lower, is worth destroying the shock again, nor making it perform in the less than ideal range. im betting you are right about the operational range of 3/4 to 7/8. the funny thing is, the lap times didnt suffer that much at laguna, but it felt pretty bumpy on the driver side, and down the corkscrew with a little push. could have been the issue....... i think there is SO much compliance with all that bushing materials, the damping is almost sufficient... however, without rebound, you saw what happened at sears.. the steering wheel almost leaped out of my hands!
GT2 class runs its race at 10:40 on Saturday. If you planning on coming to watch this historic event, here is the schedule. personally, the GT2 and T1 races will be the best out there.
10-09-2018, 08:23 PM
