Otomoto coilover sleeves to A61 *rear*

[mullett]

Looking into rear suspention options for the GA61 and I came across this:

Adjustable rear suspention (celicasupra.com)

Is there any reason i can't do a similar thing for the rear of the GA61, using a set of Otomoto coilover kits? I'm not sure if i could use the supplied upper spring mount...but then...maybe I could. Maybe I should crawl around under the car for a bit when i get home....

-RM.

[wilbo666]

Personally I think it is average.

The arc of the rear arm is quite large...and hence the misalignment is large...

See this video I took to show what I mean.

http://www.youtube.com/watch?v=DRuGqlq1Xss

Cheers
Wilbo

[mullett]

I can't open youtube (useless bloody limited internet *grumble*) but I think I know what you're getting at. Would it make a difference if the top and bottom of the spring assembly were mounted on pivots? Starting to get to be too much work...but still.

-RM.

[takai]

Looking into rear suspention options for the GA61 and I came across this:

Adjustable rear suspention (celicasupra.com)

Is there any reason i can't do a similar thing for the rear of the GA61, using a set of Otomoto coilover kits? I'm not sure if i could use the supplied upper spring mount...but then...maybe I could. Maybe I should crawl around under the car for a bit when i get home....

-RM.

The Otomoto kits arnt appropriate for this, as detailed below. If you could find a 6" or 5" adjustable spring mount, then that would be all well and good.

Personally I think it is average.

The arc of the rear arm is quite large...and hence the misalignment is large...

See this video I took to show what I mean.

http://www.youtube.com/watch?v=DRuGqlq1Xss

Cheers
Wilbo

Its actually not that bad given the diameter spring he is using. its a 135mm spring, rather than the standard 65mm coilover springs and hence they cope with misalignment MUCH better. Infact since the standard replacements are normally around 150mm, one could say that the misalignment isnt really an issue whatsoever. Realistically all you are doing is putting the lower spring mount on an adjustable platform.

Also given that most of us would be running short stroke shocks then what little misalignment it does have throughout the normal range of travel is severely limited by a lack of droop.

[wilbo666]

I must admit I only quickly browsed the thread he linked to, and assumed the example was using 65mm ID springs.

Turns out there are 3.5" ID springs which as Takai says would be a lot better I think



It is good that the bump stop can fit up inside the adj seat he is using too!

Cheers
Wilbo

[takai]

He is using the 85500A ones i think. 5" OD 3.5" ID springs.

Its really only useful for fine balancing of the weight distribution though, the adjustment range isnt enough to really get much height out of them without weakening the setup considerably.

Also i have SERIOUS issues with his welding skills

[e30-323ti]

The back-end on a E30 BMW is pretty similar.
Those guys use a "tilting" height adjuster, GC (Ground Control) make these to help keep the spring in the arc of the trailing arm and the lower platform flat against the spring.

[Viper]

Got any links for this?
Sounds very interesting/tempting

[e30-323ti]

They are for the E36/46, but the E30 has the same "nub" on the trailing arm that these sit over.

Weight Jackers

[Viper]

Tempted to go a combination of the two...

Try and find a local seller.

[marvis]

Just run a AE86 coilover...

[Viper]

Dunno how Mr. VicRoads would like that

[WDE_BDY]

Just run a AE86 coilover...

To do that you would want to reinforce the body and the lower shock mount, well at least I would to be on the safe side.

Callum

[Johnzoku]

might work in 86's but supra's have 500kg's on them (approx )

this is awesome!!! wanted to do something like this for a long time!