Cam, I agree with you - the rear end of the 1600 is very difficult to set-up, that's a big part of the reason why I am now building the Sunny (as a race car), the live rear end is easier to get right - plus it should be at least 60-80kg's lighter :))
In regars to the konis - have you had them valved to suit the springs? I was running 800 pound springs in my 1600, and only had them set to half a turn (Koni Yellow's) from full soft - but they were revalved from new to suit the springs. The wheel alignment settings are simialr to what I ran. I was running 1 degree neg camber at rest with zero toe - so that should be pretty right - but I was only running a naturally aspirated FJ - so no where near the horsepower you are trying to put down (another reason for the sunny - this time we are FJ turbo - with plenty of mods) Another thing you could try is no rear bar at all. I know this sounds odd but I tried it at the last race meeting I ran at Eastern creek. I was only running a soft bar to begin with, but when I dropped the bar off, I picked up just over 1.5 seconds a lap! This was done on the same day, same weather conditions, same tyre pressures, same shock settings. Only difference was the rear bar was removed. I think it allowed the back end to be a little more compliant with the road - it was certainly a softer set up. I would be wary of going to soft with the springs, it's only going to induce more squat = more camber = more wheel spin. I actually changed the pick up points on my swing arms, then added eccentric (spelling???) bushes for adjustment of camber and toe. But at the end of the day, my setting were similar to yours so it shouldn't make much difference. It was hard to set up the rear end with a naturally aspirated FJ - I don't envy you trying to do it with the horsepower you have - goodluck. MArk. ----- Original Message ----- From: "Cam McKinnon" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, October 28, 2002 11:31 PM Subject: Re: suspension questions > What do you think about he rear suspension Mark? > > I'm just about over the arse end of a 1600, IMHO a big handicap on the race > track. > > I have 800lb rears with the koni's screwed up as hard as they will go with > say .75 deg neg camber and zero toe and mid setting rear bar. (with locked > R3.9 and decent 225/50/15 Rspec bags) > > At any point other than straight ahead it's wheel spin city from the moment > of any power application. As you'd know if you are spinning....they are > winning. > > I'm thinking of going back to a softer rear spring and shock with a firmer > rear bar, > > Ideas?? > > Cheers, > > Cam > CM510 > www.sprite.com.au/cm510 > > ----- Original Message ----- > From: "Mark Alford" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, October 28, 2002 11:21 PM > Subject: Re: suspension questions > > > > Robbie, > > > > Before you go forking out a load of hard earned money - take the car to a > > good wheel alignment guy. > > > > I would suggest looking at your alignmet settings prior to changing > > components. If you still use the car as a daily driver, anything you do > will > > be a comprimise, but I would be aiming for loads of positive castor (5 > > degrees if you can get it - but this will make the steering quite quite > > heavy) and up to 4.5 degrees negative camber (no good for the street > > though - so adjustable strut tops could be a good option, depends how > > serious you want to get.) > > > > Of course your ride height and quality of components like shocks will come > > into play - but it would be interesting to find out what your wheel > > alignment settings are right now before you make any adjustments. At > > leastthen you will know what adjustments are working and what adjustments > > have little or no effect. > > > > Mark. > > > > ----- Original Message ----- > > From: "Robbie vidler" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Monday, October 28, 2002 4:45 PM > > Subject: suspension questions > > > > > > > had my first hill climb in my 1975 datsun 180b SSS on sunday... the car > > got > > > around in an ok time despite handling like a dog ;) > > > > > > it was understeering big time when i thought i'd have trouble keeping it > > > from over steering, however it rarely let go of the rear end. > > > the front springs are to soft and the whole car in my opinion sits to > > high. > > > > > > i am wondering how much lower then standard can i go 2.5" or 3". the car > > has > > > unknown front shocks and munroe adjustables on the rear, i don't know > hwo > > to > > > adjust them though. > > > > > > after a suspension inspection these items were suggested. > > > > > > Rh inner tie rod end > > > lower inners > > > radius rod bushes > > > lh lower ball joint > > > idler arm > > > rear lower arm bushes > > > rear shocks > > > quote > > > $1000 > > > > > > this sounded a little excessive to me, and the rear shocks appear ok to > > me? > > > > > > i'm wondering which of these things i could do myself and what else > could > > i > > > do to make the car more determined to turn in? > > > > > > thanks robbie. > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@;datascribe.com.au/ ---------------------------------------------------------------------
