R32 Ls1 Conversion

[benm]

bah weekday trackdays

[Sydneykid]

sounds awesome in the vid!

Dave's inlet system at work there.

visibly diving under brakes and getting light in the rear end is going to be either too little front shock, front spring, or anti-dive geometry. Or a combination of the three. Shock and spring is where I'd be starting.

It has fair bit of bump valving in the front shocks and we can't run high spring rates at Oran Park as it is far too bumpy since there hasn't been any track maintenance for 3 years. It could do with a little more anti dive geometry, but it has lots of front braking capacity (in excess of the rear) so I was reluctant to suggest to Stu that he reduce the front weigh transfer too much. Lest it start locking up front brakes, which is not good for an inexperienced circuit driver.

Cheers

Gary

[Merli]

Its two weeks away. Don't you just need a clutch to make it drivable.

This isn't Fast and Furious... Parts don't automagically come "overnight from Japan"

I'm assuming that it'll be at least 2 weeks before I see the clutch...

Ben - Do what I do, and work from the track...

Sure, you might have to put up with Duncy Dinosaur pointing and laughing at you whilst you're hiding in your car making a few phone calls, and you might miss a few sessions here and there, but beats being in the office!

[S13Deviat]

Stuart,,,I'll echo what some of the boys have said,,,I would add a real rear spoiler,,,dual plane adjustable nothing less,,,no gay drift rubbish but a real one. Gary will know where to find one and him corner weighting the car will help heaps,,,you might find you have to transfer or add weight the rear.

What about lowering the fuel tank,,,A9X style.

Turn 2 could be just be you carrying to much speed,,,you won't be the first or the last to mow the grass there. Ando and I were laughing our heads off,,,we both could see what was about to happen,,,Sorry tiger but it was funny. Interestly Ando had time to watch,,,pull another cog,,,laugh and toot the horn.

I'll keep you to that drive mate by the way.

Neil.

What ^^^^he^^^^ said My wing is certainly no engineering masterpiece, cost me a sweet $100 smackers 2nd hand.... As mentioned it could do with sitting higher and having a dual plane, but on a Team PSR (Povo Spec Racing) budget, my $100 wing will do just fine

Hey hey i had time to do all that simply because i slowed down and pulled out the popcorn to watch the Yellow Tug Boat 'slide' into dock.....

[hrd-hr30]

Dave's inlet system at work there.

It has fair bit of bump valving in the front shocks and we can't run high spring rates at Oran Park as it is far too bumpy since there hasn't been any track maintenance for 3 years. It could do with a little more anti dive geometry, but it has lots of front braking capacity (in excess of the rear) so I was reluctant to suggest to Stu that he reduce the front weigh transfer too much. Lest it start locking up front brakes, which is not good for an inexperienced circuit driver.

Cheers

Gary

you think that's bumpy, you should see QR & lakeside! Apart from turn 4, they make OP GP look like a billiard table.

as for the wing suggestions, that's just a band aid solution. At best. You're far better off working on mechanical grip first. Oran Park is a low speed circuit anyway.

[Neil]

as for the wing suggestions, that's just a band aid solution. At best. You're far better off working on mechanical grip first. Oran Park is a low speed circuit anyway.

So Harry are you saying a rear wing is not a good idea?. I agree O/P is not the fastest track but you still need down-force and rear end stability through turn 1, and a couple of other short straights that have your foot mashed.

Neil.

[hrd-hr30]

So Harry are you saying a rear wing is not a good idea?. I agree O/P is not the fastest track but you still need down-force and rear end stability through turn 1, and a couple of other short straights that have your foot mashed.

Neil.

I'm saying its not a good idea to try and fix his stability problems by adding a wing. He's got issues with its mechanical setup. Don't try and fix that with aero. Treat the problem (excessive dive) not the symptom (rear end instability).

[Beer Baron]

hey big boy. I was gutted I couldn't get out there on friday to see the beast. but so pleased it went well.

R32s trying to swap ends under brakes is a very common trait.

a few things that will help.

what are the current camber and toe settings front and rear?

if you don't already some toe in on the rear will help stop the back from trying to overtake you round the outside!

also driving style helps too. the R32s do not want you doing any turning under brakes. trailing any brake as you turn in will see it want to swap ends. this is especially prevalent at turn 1/2 oran park as the track slopes down a little that way too.

after you've done any alignment and driver adjustments then look at springs/shocks/bars/geometry changes.

anyway, spinning off a few times at least shows you are trying and no doubt when you get the hand of it you'll be quick. well done.

[Sydneykid]

hey big boy. I was gutted I couldn't get out there on friday to see the beast. but so pleased it went well.

R32s trying to swap ends under brakes is a very common trait.

a few things that will help.

what are the current camber and toe settings front and rear?

if you don't already some toe in on the rear will help stop the back from trying to overtake you round the outside!

also driving style helps too. the R32s do not want you doing any turning under brakes. trailing any brake as you turn in will see it want to swap ends. this is especially prevalent at turn 1/2 oran park as the track slopes down a little that way too.

after you've done any alignment and driver adjustments then look at springs/shocks/bars/geometry changes.

anyway, spinning off a few times at least shows you are trying and no doubt when you get the hand of it you'll be quick. well done.

It has rear toe in, plenty in fact.

My guess is it has so much bump steer at the front it is unstable under brakes and sawing away at the steering wheel correcting the bump steer is unsettling the rear end.

Cheers

Gary

[phunky_monkey]

Car sounds great Stu!

[hrd-hr30]

unless the front end been significantly altered it shouldn't be any worse for bump steer than any other R32 - except for the amount of pitch its getting under brakes, which certainly sounds excessive from the descriptions. less pitch = less bump travel = less bump steer.

[Sydneykid]

unless the front end been significantly altered it shouldn't be any worse for bump steer than any other R32 - except for the amount of pitch its getting under brakes, which certainly sounds excessive from the descriptions. less pitch = less bump travel = less bump steer.

The steering rack location has been significantly altered.

Cheers

Gary

[hrd-hr30]

ah... have fun with that one!

[BezerkR32]

yeh its something that was overlooked when mounting the rack, but can be rectified, not sure why it would be causing me issues only in turns 1 & 2. I had less trouble later in the day after some instruction on my line into turn 1. but turn 2 was still an issue, i think i wasnt braking hard enough and going in a bit hot while still trailing the brake. Ill have to give it another go and try some changes on the day. i just wanted to drive it on Friday.

ah... have fun with that one!

[DRD-00F]

If having an unsettled rear end under brakes on 2 corners during your first outing ever in a project car like this, I think we can all agree you're doing pretty well

[Sydneykid]

yeh its something that was overlooked when mounting the rack, but can be rectified, not sure why it would be causing me issues only in turns 1 & 2. I had less trouble later in the day after some instruction on my line into turn 1. but turn 2 was still an issue, i think i wasnt braking hard enough and going in a bit hot while still trailing the brake. Ill have to give it another go and try some changes on the day. i just wanted to drive it on Friday.

It's curable, just needs a bit of time spent on it. Time consuming yes, but not hard, just work through the processes.

It may need a little less brake bias to the rear, but that's also easy to fix. But first we fix the bump steer.

Cheers

Gary

[BezerkR32]

sorry as there has been no updates as i havent touched the car sinse OP, have been preparing spare bedroom for my daughter as to prepare her current room for my new arrival who decided to join us at 11.55am on sunday morning. Gorgeous little girl weighing 3kgs and 50cm tall. Mum and new daughter doing well, still havent named her.

ill give it a couple of weeks for them to settle in at home and then ill be back into it.

Thanks for all your suggestions and input also, just have been offline for a while and unable to reply till now.

[JAS-25T]

Congrats Stu! all the best to the (now larger) family!

[Beer Baron]

congratulations mate. good news on the little girl. now for a name... hmm.

[S13Deviat]

Congrats Stu and rest of the fam!!!