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Sport 300 Track Set Up


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Can anyone give me some directions as to spring rates people are running for track set up only on a sport 300?

How many degrees of camber plus castor, toe, ride height etc? Some general direction would be great.

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my X180-R friend (similar to the Sport 300) sent me this years ago.

I know Lew is running pretty low, 159mm front and 156mm rear, I think.

This helps the anti dive anti squat geometry of the X180-R, along

with the rear brakes mounted in a leading position.

He sent me this about his Carreras

His new shocks are (still haven't tried them on the track yet)

Front: #6348/6 with a 4" stroke and compression damping of 475lb and

rebound of 320lbs.

Rear: #6366/5 is a 6" stroke with 320lbs of compression and 265lbs of rebound.

His springs are 10cs425 & 10cs300. which means 425lbs front and 300lbs rear.

He was told this by some of the original X180-R racers

______________________________________________________

X180R Info

Front ride height race range 154-155 mm from center frame, rear most

frame part. With 10 gallon gas.

Rear ride 147-148 mm

Race car Bundy setting LF 156 mm RF 159 mm Rear 154 mm,

Other LF 156-157 RF 158-159mm rear 154mm

MAX. 159mm

Red Spring rate 63.6 newton-mm = 363 ftlbs

White rate 59 n-mm = 337 ftlb

Bundy - Lt Blue 66.9 = 382 ftlb

Black Rear 63.9 = 365 ftlb

Spacers none in front, 5mm rear max.

Damper rates front F6, rear R1

Camber front 1 30 - 1 45, rear 1 45 – 2 00

Front Toe out 2 mm total. Rear toe in 1.5mm total.

Castor 3.5 deg.

Bump steer at 3 inch ride height 1mm side bump out.

Understeer - lower front one turn of shock.

Nervous on straight - rear too high or add 10mm wedge to wing. Loose -

rear height too low.

You can see above, he runs 159mm front and 156mm rear ride heights.

Personally I like a bit of toe-out in the front ( I run 0.1deg toe-out per side, on street and track), my X180-R friend runs more on track only, but it is a bit nervous.

He runs ~ -2.5 to -3deg of camber in the rear, and about -2 to -2.5 deg in the front. Inside shoulders wear faster of course.

Castor is factory spec.

Edited by Vulcan Grey

Travis

Vulcan Grey 89SE

My Lotus Photo and Projects Album

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Cheers for the info it will be very helpful.

In your quote you say " He sent me this about his Carreras

His new shocks are (still haven't tried them on the track yet)"

What does the word "Carreras" mean. Are you addressing the type of shock?

Also with those spring rates are you running on slicks or semi slicks?

I've just recieved a set of Protech's NEW Shock - Double Adjustable with 2 control knobs

So having the damper rates will help.

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Protech are in most people's experience not a great shock for the Esprit, where did you buy them from?

What's the number of your 300, have you tracked it before? I was a passenger in this car around Brands Hatch and it was amazing!

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88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

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A black one, very nice :D

I took SJ Protechs off my SE and threw them in the bin, awful. On a driver training day at Millbrook I was told by the instructor to stiffen the dampers as the car was far too soft and they were already on 14 out of 14. I'm sure Steve will tell you different but I'm sure that the development work that went into them was him calling Protech and asking if they had a damper that fit the hole, they certainly weren't developed by the worlds leading ride and handling experts at Hethel.

I've fitted the Lotus Bilstein/Eibach setup now which was made for the car by Lotus in 2006/7 and it's at least a million times better.

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

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Ben, I and a number of others have good success with Protech shocks. Their technical support is pretty much non existent, at least at this end of the globe. As such it took me a while to figure out how to set them up but once done I rate them highly. My fronts are set at 7, just over half way, with a standard spring rate that's exactly what I would expect. (others have them less)

I started mine at zero and drove gently for a week before starting to wined them up, I found it gave the valveing time to settle, Protech said it wasn't necessary, but I'd do it again.

I did once work with double adjustables, but it was many years ago and I can't remember, I think we set bump first, but I could be wrong.

Protechs seem to be contentious around here but as far as I can ascertain must of the issues seem to have been caused by poor selection of spring rate as opposed to bad shock, mine have been on for 18 months 2 years now, and still fine, no one's managed to keep up with me yet.

I'm also very fussy about set up, I'm a trail braker so I need good directional stability and weight transfer.

Keep us informed as to how it goes, I'm interested in your choice of double adjustable, does your car have a limited slip ?

Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer)

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All Sport300's have a LSD fitted as standard.

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

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Cheers for the info it will be very helpful.

In your quote you say " He sent me this about his Carreras

His new shocks are (still haven't tried them on the track yet)"

What does the word "Carreras" mean. Are you addressing the type of shock?

Also with those spring rates are you running on slicks or semi slicks?

I've just recieved a set of Protech's NEW Shock - Double Adjustable with 2 control knobs

So having the damper rates will help.

Yeah, sorry that was confusing, it was just a copy and paste from an old email to another friend with an X180-R that wanted to know about suspension for his car.

This is the X180-R btw, they are basically similar to the Sport 300 except that the X180-R has a full roll cage (bolt in) and a ZF LSD rather than the Torsen in the Sport 300. The X180-R has the same AP racing brakes as the Sport 300. Though the X180-R engine is the same as the SE with the smaller intake valves and standard T3 turbo, unlike the Sport 300's larger intake valves and hybrid T3-T4 turbo.

This is my friend's X180-R

IMG_3666.jpg

The first guy ended up building a custom set of Carrera (non-adjustable shocks) with the spring rates listed. Carrera are now owned by QA1, and they do have some adjustable options that should work for the X180-R and Sport 300.

Here are the Carrera's

DSC02576.jpg

DSC02579.jpg

DSC02553.jpg

A second friend with an X180-R went with Koni double adjustables, and those are very nice, however the adjuster knob would have interfered with the front wishbones, so his car was modified to add a bracket for the Koni's.

Here are the front Koni's

DSC05380.jpg

DSC05369.jpg

DSC05359.jpg

Here are the rear Koni's

DSC05375.jpg

Damping adjustments are so very shock and driver dependent... I would say play around with them...

In my case I have SPAX adjustable shocks and I prefer them on the stiffest setting in the rear, and 2 clicks softer in the front to counter understeer. I found this setting by playing with different settings while drifting on a wet skidpad. It also felt very neutral on the track.

My friend runs "R" compound semi slicks (Toyo). Usually runs 25psi.

Travis

Vulcan Grey 89SE

My Lotus Photo and Projects Album

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Cheers Rodger I'll keep you informed.

I am having the car set up profesionally there going to put the shocks on a dyno and tell me exactly what pressure the shocks are putting out at each setting.

I am running the Quaife LSD. Very happy with it. But sometimes it bit isn't very progressive

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I'm picking them up on Monday Roger so I'll let you know. They are at top performance a Koni specialist. They are dynoing all four and also checking the spring rates of the springs that sj provided.

At least then I'll have a better idea of the consistency between each corner. Giving me a better idea of the shock quality. The springs I got are supposed to be standard sport 300. I am looking at going a fair bit harder.

Top Performance are going to provide me with a few different sets of eibach springs. I'll fill you in Monday night

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