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Joelly
GTM delivered
Joined: Mon Oct 01, 2007 10:17 am Posts: 32
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hi-los on a coupe
Hey all,
I've read that on the front suspension of a coupe the trumpets need to be shortened, but does anyone know if it's necessary to make hi-los shorter than their lowest setting?
I ask because it looks as though this has been done to the hi-los I'm removing and replacing…
Thanks in advance
J
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Fri Jan 30, 2009 4:28 pm |
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Pantera2075
On the Road
Joined: Fri Oct 12, 2007 9:38 am Posts: 740 Location: Stoke
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Re: hi-los on a coupe
I've got both types of Hilo on mine - old and new type. If wound all the way down they would be well into the bumpstops. What has probably happened is the susp has been changed and it has looked high, and hasn't been given a few days to settle - so, a bit of butchery then found it settled, and wound it back up again.
_________________ GTM Libra, GTM Coupe, Siva Moonbug, GMC Safari And DeTomaso Pantera.
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Fri Jan 30, 2009 5:50 pm |
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West
Admin, and Coupe Nutter
Joined: Fri Sep 14, 2007 10:34 pm Posts: 1762 Location: In the workshop GTM: Cox/Coupe
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Re: hi-los on a coupe
depends on the make of hilo, when i first got a Coupe, i fitted some no name ones and had to machine a bit off to get the car as low as i wanted, it was very very low, Speed bumps had to be avoided I currently run The original style Hilo, and do not have any material removed from these, i do run a little higher these days it gives better geometry, and more forgiving on those pesky sleeping policemen WEST
_________________ IF wile e coyote had a GTM he would have one with Nitrous too! watch out road runner! The First GTM into the 11s then the 10s, PB 10.87 @ 125.5 Mph on A048 tyres, and fully road legal at Santa Pod
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Sat Jan 31, 2009 11:37 am |
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Joelly
GTM delivered
Joined: Mon Oct 01, 2007 10:17 am Posts: 32
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Re: hi-los on a coupe
Thanks for your responses.
I think the problem is that I've fitted smootharide cones to try to make the front suspension a bit softer, it seemed like a better way of doing it than the traditional hole drilling, but apparently they're taller and take ages to settle properly.
I'll just run it with the front a bit high for a while and then see what happens.
Anyone else have any experience of using these springs?
Also, when you're advised to shorten the strut, what length are you meant to take it down to?
Thanks again
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Sat Jan 31, 2009 5:40 pm |
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Joelly
GTM delivered
Joined: Mon Oct 01, 2007 10:17 am Posts: 32
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Re: hi-los on a coupe
And by the way, I think you were exactly right Pantera, as the hi-los been trimmed down and then wound back up around an inch.
Cheers
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Sat Jan 31, 2009 5:51 pm |
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the other Tim
The Terrible Tims
Joined: Sat Sep 29, 2007 12:23 pm Posts: 487 Location: suffolk GTM: Cox/Coupe
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Re: hi-los on a coupe
Some hi-lo's have a wider flange where it sits on the cone to stiffen the suspension up, (i know Adjustarides do) it may be worth checking yours against a trumpet. The ratio on the trumpets is 3/1, so 1/4" off the trumpet drops the car 3/4"
_________________ I'm not a complete idiot, parts of me are missing!!!!!
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Sun Feb 01, 2009 12:33 pm |
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Andy
Ready for SVA
Joined: Thu Nov 15, 2007 10:22 pm Posts: 363 Location: Ireland
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Re: hi-los on a coupe
If anyone is looking for hilos I have 2 pairs of RIPSPEED ones, they came off mine and are not being used now, I have stripped and rebuilt all 4. I believe these ones are quite rare and some of the earlier good ones made. One set is the original allen key through the top sort and the other is the more traditional double nut. I have the special allen ket for them as well. The older set has a heavier wider squarer base and the newer ones have more of a curved base profile. If i remember right the squarer ones were on the front of mine and the other ones on the rear.
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Sun Feb 01, 2009 1:30 pm |
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Joelly
GTM delivered
Joined: Mon Oct 01, 2007 10:17 am Posts: 32
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Re: hi-los on a coupe
Andy, the ripspeed ones that are adjusted with an allen key... do these need to be taken fully off the car to adjust them, or does the allen key go through the hole in the subframe that you use to compress the rubber donuts?
thanks for the ratio tim, i did have a bash at working it out myself, but it's nice to be told
Cheers
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Mon Feb 02, 2009 9:18 pm |
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West
Admin, and Coupe Nutter
Joined: Fri Sep 14, 2007 10:34 pm Posts: 1762 Location: In the workshop GTM: Cox/Coupe
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Re: hi-los on a coupe
Joelly wrote: Andy, the ripspeed ones that are adjusted with an allen key... do these need to be taken fully off the car to adjust them, or does the allen key go through the hole in the subframe that you use to compress the rubber donuts?
thanks for the ratio tim, i did have a bash at working it out myself, but it's nice to be told
Cheers Yes you should be able to adjust them through the hole in the subframe, personally i like to jack the car up before adjusting them just so there is not quite as much load on them when adjusting. proud owner of some ripspeed originals WEST
_________________ IF wile e coyote had a GTM he would have one with Nitrous too! watch out road runner! The First GTM into the 11s then the 10s, PB 10.87 @ 125.5 Mph on A048 tyres, and fully road legal at Santa Pod
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Mon Feb 02, 2009 9:40 pm |
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Pantera2075
On the Road
Joined: Fri Oct 12, 2007 9:38 am Posts: 740 Location: Stoke
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Re: hi-los on a coupe
Note the ratio isn't constant - it starts at around 3:1 when at standard height, but if you're lowering it a lot - as we do on the front of coupes, it gets nearer 4:1.
_________________ GTM Libra, GTM Coupe, Siva Moonbug, GMC Safari And DeTomaso Pantera.
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Tue Feb 03, 2009 5:32 pm |
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