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LOTAC suspension from the shop (link above) or from usual suspects ? - Suspension/Brakes/Wheels/Hubs/Steering/Geo - The Lotus Forums Jump to content
Laika

LOTAC suspension from the shop (link above) or from usual suspects ?

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Hello

GT3 later generation.

I need to refresh my springs and suspension generally.

After pricing up various options I find myself needing your guidance:

I want to go "standard", so i don't want adjustable perches, knobs and bells etc.

Options:

LOTAC suspension from shop above, described as: 4 x Springs, 4 x Dampers from the Lotus Suspension Refresh Programme. 

or

Individual Dampers and Springs from SJS (or other vendors), which end up looking exactly the same but cheaper

I did call around the vendors and they could not supply "Lotus suspension refresh Programme" sets, only individual parts.

 

My Gut says go with the refresh programme items, but is there actually any difference ?

 

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Upgrade today to remove Google ads and support TLF.

There is always the risk of dubious quality or specification when sourcing from the aftermarket. If the terms are agreeable  and stock specs are desired it's simply a gift to be able to source your bits as provided by Lotus.

Cheers

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Money no object go for the lotus refresh stuff but it is well overpriced. Original oem bushes or lotac or the ones pnm do. I went orignal on my G turbo for springs and shocks but stupidly fitted the split poly bushes and am not happy with them and now have to redo it all with oem rubber

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On 21/08/2019 at 19:14, Laika said:

Hello

GT3 later generation. I need to refresh my springs and suspension generally.

After pricing up various options I find myself needing your guidance:  I want to go "standard", so i don't want adjustable perches, knobs and bells etc.

My Gut says go with the refresh programme items, but is there actually any difference ?

 

>>>>

A: Yes, there is a difference, I have the package on my S4s.

Order 4 shocks from the store and buy Eibach springs on eBay or Amazon= save 50%. There is no "trick" in springs. Once you find the spring ratio-you're golden.

If i'm not mistaken, GT3 spring rates are  the same as SE:

89+ SE (22% pro-dive geometry);   Ratio rr/frt=157/166=0.95

Front: Rate– 29.1 N/mm /166 Lb/in, Free Length–372mm (14.6”), Static Length– 219mm (8.62”), ride hgt 170mm

          Total with ARB in the corner = 306lbs/in, ARB rate=0 in the straight line motion

Rear: Rate– 27.5 N/mm / 157 Lb/in, Free Length–347mm (13.7”), Static Length– 218mm (8.6”),  ride hgt 170mm

ARB: 17.5 mm dia. front anti-sway bar, Rate: 140 lbs/in

FYI:  SE 93 MY  had  29.1N/m /166Lb/in at the front, rear was kept the same 157 Lb/in

 

 

 

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Bought a full lotac replacement set of bushes and dampers and springs all round fron the shop. going to also refinish everything I need to take off along the way... so a full body off restoration...

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Seems to be M12 compared to 7/16" bolt size, which is near 0,9mm larger. I'd like to know how many on here who did that as in changing arms, drilling old arms or something different. That could be interesting to know. Anyone?

Btw. is that a normal 8,8 grade bolt or a 12,9 grade steel bolt? In any case, what would be the best to use for this application?

(It's the only two bushings I haven't changed yet, hence the questions).

Kind regards,

jacques


Nobody does it better - than Lotus ;)

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Had a machine shop drill mine out 


Only here once

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Urghhhhh. NSR strip yesterday, who designed the origami heat shield!!, all came apart ok in the end.

Definitely a knackered bush... 

 

20200404_104612.jpg

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OSR was a three day epic involving heat, wd40, drilling, pressing, drawing, welding .. eventually got that bottom stud out.

NSR I tried wd40 and nuts, heat and draw, to no avail. I really didn't want to spend three days drilling so I got some seafoam deepcreep. Applied it over two days and the stud drew out on first attempt, totally amazed.

Need a lot of spacers to get it out, tight all the way..

20200409_164806.jpg

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Well done! One might lube the new nr. 13 and 14, when installing.

Knd regards,

Jacques


Nobody does it better - than Lotus ;)

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On 04/04/2020 at 06:48, Jacques said:

Btw. is that a normal 8,8 grade bolt or a 12,9 grade steel bolt? In any case, what would be the best to use for this application?

JAE in USA is sourcing AN bolts for the suspension.  That seems an appropriate choice to me


chris

90SE

just because I don't CARE doesn't mean I don't UNDERDSTAND

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All finished.

Lessons learnt;

Two days of seafoam deepcreep application actually works !

Cut the nylon off the rear stud nuts and use them to draw out the stud, they are deeper threaded so don't strip under immense torque required to draw those out.

Front upper stud, with careful use of the front double nut you can actually get both arms out without needing to withdraw the entire stud.

I used a press for bushes out and in, only needed a max of 5 ton.

For the arb bush I could not use the press so I used my threaded press and pull sleeve kit combined with my bearing press kit, and that worked perfectly. There are TWO spring clips, one either side on that bush!

Getting the front lower arm back in is painful, but use of pressure and up and down wiggling (of the arm) gets it aligned, I found putting in the rear bolt half way helped get the front in.

You need proper spring compressors to remove the front springs to get to the top plate, that spring is under loads of pretension. Putting the new spring in using the front arm and a jack worked perfectly, my new springs were an inch shorter than my old ones, I could not use that method if I was putting the originals back in.

 

Put the ARB ends back in the Bush BEFORE you fit the springs !

Wear goggles... loads of grit, dirt and stones seem to fall on your face everytime you try and do anything. 

 

 

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Hi Laika

Can I ask if you remember the inner diameter of the rear lower link bush?

I have bought the LOTAC poly bushes as yours. But they dont fit! (Or fit too easily!)

The inner diameter of my rear link is 35mm, whereas the bush is just a bit more than 32mm?

The upper is a different story, as the apparently are some aftermarket links.

Lars

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