Discussion
Hi all, what should the ride height be with 18" spiders? My first chim was 145mm rear and 125mm front from outrigger to ground should this be the same no matter what size the wheels? It's currently 165mm read and 130mm front and I think it looks high at the back. I am going to stiffen the ride abit as well.
Thanks
Rob
Thanks
Rob
You may need a slightly higher ride height with 18 inch wheels on the front. About 20/25 mm difference is about correct. Don't forget to use higher aspect ratio rear tyres. Your rears are probably 5-10 mm too high.
What Spaceman says re hardness of dampers. I have the rears soft, even on track days. The fronts are harder, but how hard depends on road or track, and aspect ratio and load index of your tyres.
What Spaceman says re hardness of dampers. I have the rears soft, even on track days. The fronts are harder, but how hard depends on road or track, and aspect ratio and load index of your tyres.
These methods of measurement are all based on a symmetrical body, evenly formed wheel arches and / or level & symmetrical outriggers - not a chance IMHO for accurate measurement. I believe (and as advised by an expert) the only way to measure accurately is when up on a lift, using a straight edge and measure from the chassis (I'll agree that this is assuming a straight chassis, but this is the best reference, again IMHO).
Richard 858 said:
These methods of measurement are all based on a symmetrical body, evenly formed wheel arches and / or level & symmetrical outriggers - not a chance IMHO for accurate measurement. I believe (and as advised by an expert) the only way to measure accurately is when up on a lift, using a straight edge and measure from the chassis (I'll agree that this is assuming a straight chassis, but this is the best reference, again IMHO).
That's what the TVR pros do. Get the rear lower wishbones level (parallel to the ground), then set the front as near as possible to level 
l6rth said:
My garage floor is level, so if I use a digital level to get the wish bones level is this optimum ride height?
Great question, and oddly one I was asking myself earlier today... Had my geo set up by a very respected and well known TVR specialist November last year, who's name I don't think I'm supposed to mention. Ok, it was Matt Smith 
Anyway, I was looking at beastie today (so no different to any other day) and I did focus in on the gaps between the top (underside) of the wheel arches and the wheels... Now, I need to get underneath her and have a look (the car), but I'm kinda assuming that the wish bones are level with the planet's surface, however, the more I look the more I think I'm riding a bit high.... She'd easily go down (yes still talking about the car) another inch or more without looking 'lowered'...
I'll check this out and report back.....
Chilli
I've been fiddling around with the ride heights on mine for ages, can't really get it right. It looks good, but it scrapes on the ground at times (I think it's part of the exhaust bracket that's scraping) and it's much worse with a full boot load. I'm going to lift the rear up slightly and also try putting a couple of clicks on the rear GGP shocks to stop the bouncing.
I really could do with finding someone who could corner weight it and set it all up properly .
I really could do with finding someone who could corner weight it and set it all up properly .
zed4 said:
I've been fiddling around with the ride heights on mine for ages, can't really get it right. It looks good, but it scrapes on the ground at times (I think it's part of the exhaust bracket that's scraping) and it's much worse with a full boot load. I'm going to lift the rear up slightly and also try putting a couple of clicks on the rear GGP shocks to stop the bouncing.
I really could do with finding someone who could corner weight it and set it all up properly .
Take a day trip to Mat. What you spend on fuel you'll save on his reasonable prices and you can have a good gander underneath and take his advice on any issues.I really could do with finding someone who could corner weight it and set it all up properly .
phazed said:
zed4 said:
I've been fiddling around with the ride heights on mine for ages, can't really get it right. It looks good, but it scrapes on the ground at times (I think it's part of the exhaust bracket that's scraping) and it's much worse with a full boot load. I'm going to lift the rear up slightly and also try putting a couple of clicks on the rear GGP shocks to stop the bouncing.
I really could do with finding someone who could corner weight it and set it all up properly .
Take a day trip to Mat. What you spend on fuel you'll save on his reasonable prices and you can have a good gander underneath and take his advice on any issues.I really could do with finding someone who could corner weight it and set it all up properly .
Edit: found this, suspect this is who you mean... http://www.matsmithsportscars.com/264/wheel-alignm... That is a long way away!!
Edited by zed4 on Wednesday 24th September 09:14
phazed said:
That's the man.
I took a spin from Surrey, spent half a day there.
Did the geo, fitted my digital oil pressure/temp gauge and sorted a few minors.
The charge was more then fair, good info and banter, good bloke!
Ok, the other options are Neil Garner (they seem to do pretty well in the racing scene!) and Plans Motorsport. I took a spin from Surrey, spent half a day there.
Did the geo, fitted my digital oil pressure/temp gauge and sorted a few minors.
The charge was more then fair, good info and banter, good bloke!
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