Pedders coilover setting for drags?

[TWISTEDW86]

Hey guys just wondering if anyone else has the pedders coilover kit and what settings they've found to be good?

I was told to run 0 on the front and 6 on the rear by my housemate who works there but I tried that and it bogged massively then the front just pushed down launching at 2500rpm with the 2 step

The next run I wound the front up to 2 and rear 8 and it was better but still bogged and dove the front down I ended up running 6 on the front on my last run of the night and 10 in the rear launching at 3000rpm which seemed better again but it still slightly bogged giving me a rather shit 60ft time

I was told I need rear camber, castor kits to stand the tyres up straight and stop it from pulling the rear down so much on the launch from the irs. Any thoughts?

Should have a 3.91 ratio diff before next outing with a kazz centre.

[white lie]

I usually run them fully soft on the front and fully hard on the back but find little to no difference between 'minor' adjustments. Have to change them 10 or more to have any effect IMO.

I also don't run their crap rear springs (since they collapsed anyway).
Put some decent springs in the back, Fe2 preferably, and it won't tramp.
A decent ride height and you won't need a camber kit. If its low in the back it will probably be loading and unloading the tyre, hitting the bumpstops. No camber/toe adjustment is going to fix that.
It's always going to squat on launch, nothing wrong with that... Have a look at some of the really fast cars and how they come out of the hole.

Bit more info on the car too, What's the combo? What tyres do you run? Does the 2 step just dump the clutch at those revs? Might launch a bit smoother if you slip it with more RPM?

[TWISTEDW86]

Running 26" MT ET drag slick, 3000rpm with semi button clutch trying not to slip it as much. It's fairly low ride height not tucking rim or anything like the edge of the 18" tyres. Will try and find a link my mate took a couple of videos last time...





Before coil overs with standard shocks and ssl in rear with sl in front

[TWISTEDW86]

Ran 18psi in the rears last outting, revs to 7000rpm hitting limiter across the line in 3rd, 401.3rwhp, npc cushioned semi button clutch, 3.46 diff gears soon to be 3.9s with kazz. Running front runners and full slicks on rear.

What do you thinks a safe rpm to launch at without snapping axles etc? I personally think the current diff is a let down at the moment but it's getting changed within the fortnight and I'll be running prostars too now for further weight reduction

[white lie]

Certainly bounces around off the line!
I would honestly get a set of Fe2's in there if you can. There's a few different bushes you can look at to reduce tramp as well.
Diff will help it out of the hole a lot, 3.9's or 4.11's are the go but you'll add another gear change.
Launch RPM is a bit of a tough one, i'd tend to go more revs but more slip of the clutch. Not sure how well that works with your NPC?

What's the traction like off the line? What sort of 60 footers does it pull?
With that MPH, you should be able to cut a full second off those times without too much work.

I went from 1.8 to 1.6 60's ditching the Pedder's rear springs for stock ones, that's nearly half a second gain in ET.

[lowhsv]

gee she bounced in the first one, would raiseing the car up help too?

[TWISTEDW86]

Yeh certainally did bounce, I'll try winding the rear shocks up more, as for the bushes I have every nolathane bush i can get in there except for the camber castor kit ones. Doesn't axle tramp at all I can wind it up or down on the shocks or springs. If I can tune it right at that height i'll keep it there as I don't want it 4x4 spec for the street =D

Picking up the 3.91 kazz diff next weekend so will have a play around with that and see how I go. Got a few things to do before getting back out such as tuff mounts and new tailshaft bushes and brakes etc. Will keep this updated with my progress from my next outting

[white lie]

My stock springs sit at a decent height IMO, halfway down the sidewall of my 20"s and like I said, enough to gain me around half a second. Small price to pay really..

They just perform so much better due to the stiffer spring rate

[SS-355]

Mate, ive got adjustable teins in my ute and found that running the fronts at full hard and the rears at 4-5 clicks from full soft worked best. im also running full slicks and runners and with the rear on full soft the car would bounce in the rear till around the 60 ft mark costing me time. Launching the car at 6000rpm and sliding off the clutch has resulted in a 1.67 60ft and 11.68 et which i think is not bad going on what is essentially a circuit orientated suspension setup.

Mate i just watched your vid and it definately looks like you have the settings arse about,rebounds hard in the rear. Try what i said and give it more revs off the line trying to slide the clutch making the launch as smooth as possible if that makes sense. With that mph an eleven second et is there for the taking,cheers Steve.

[TWISTEDW86]

Thanks mate I started with the front on 0 and the rear on 6 for the first run and it bogged massive in the rear then came up and dove the front in, that was at 2000rpm I then tried 2500rpm with 8 rear and 4 in the front slightly better but same story, 3rd run was 2800rpm 6 in the front and 8 in the rear my last launch was 3000rpm with 6 front 10 clicks rear seemed better but I wasn't sure if I just needed more rpm on the launch.

So you launch at 6000rpm... farrrqq I thought that'd be too high and be risking breaking axles etc... Might have to upgrade them soon then. Will be interesting to see next time out I just put a kaaz in with 3.91s

[SS-355]

Running full slicks at the correct psi absorbs alot of the energy on the launch and minimizes breakages. I found that a lack of rpm would cause the car to bog down bad out of the hole and after receiving some advice from one of the best manual peddlers in the country to leave the line at 6k rpm (go to Gm Motorsport website and search for an incar video of Phonsey at work ) , was my first reaction too,with some practice i reduced my 60ft times from 1.9-1.6 and et went from 12.1-11.8. All my passes good or bad were around the 116 mph mark.

[TWISTEDW86]

Hmm I'm assumming you mean this video... Think I'll wait till my 1400hp pedders driveshafts turn up before I go dropping it that hard

[SS-355]

Mate ive done close to 60 passes in my ute from new with different stages of mods and 20 of them have been as it is now and launching between 5-6k rpm,300rwkw cam only m6,z grip tex,3.91 diff,ripshift front runners and drag slicks,ZERO BREAKAGES. unless you plan on serious fi power down the track save your money on the driveshafts.The factory shafts provide great insurance for your diff and are cheap as chips from the wreckers.

[hotbox]

If there rear springs in the coilover kit are anything to go by the so called ''1400'' hp driveshafts will be rubbish aswell

[Martin_D]

Search the posts of a guy known as Markone2.......nothing beat the factory shocks and springs at the track and that was down to 10.5 or similar......
Factory - and any other brand - driveshafts will break if you axle tramp. No magic there.......
P.S. Your car looks horrible in the vids