SUPERFORMANCE GT40 Owners Manual

[Dave Hood]

Holman Moody installed my crush sleeves to keep the wheel bearings in place. Paul Whitlock, who used to work for Dennis Olthoff, is now at Holman Moody. He would be the source for information on this. Whether or not you could get his cooperation is a question, however.

 

[Ian Anderson]

What’s the issue with the parking brake? One car or all? The factory fixes known build issues if they are common I’m sure
BLAS

rear disc brake actuator

my SPF2116 spit out the eft rear parking brake actuator. the actuator resembles a brake wheel cylinder. i can only guess that a screw came adrift and got caught between rotating assemblies. the attaching end flanges (2) got broken off . these flanges were countersunk for flathead allen screws...

www.gt40s.com

 

[Ian Anderson]

Possibly this

Cable shifter out of adjustment

Howdy folks, we recently had to pull the RBT ZF out of our SPF MKI for a slave cylinder leak. After reassembly it will no longer stay in third. It’s a cable shifter and we removed only the cable mounting plates and did not touch the adjustment threads. All the other gears are there but third...

www.gt40s.com

and

Failed Shock Mount

Yesterday, Frances and I took the 40 down Skyline Blvd to Alices for Dinner, on the way home, it felt a little "odd". When I got out, the right rear was sitting 1 to 2 inches low. The top, right, rear coil over shock mount has failed. The top front part of the Upside down U shaped mount had...

www.gt40s.com

 

[Markus]

To add a few more:
- wheel alignment figures (if different from original)
- air pressure recommendations (especially for frequently used wheel + tire combinations)
- available tires ( sizes + manufacturers)
- how to exchange coolant and more important how to bleed the cooling system
- change and bleed brake fluid
- what to check on regular basis (e.g. bolts and nuts all around, wear on lower control arm ball joint, etc)

 

[Blas]

Got the alignment info covered. Ride height too.
Tire air pressure guidelines a bit subjective to most owners preferences and driving style. But some info is included.
A couple wheel and tire combos noted but Avons no longer an option I believe. All wheel options covered…
No info on coolant change-out tips/info found to date.. But coolant pressure/vacuum & evac. a pretty common procedure I would think.
Brake bleeding a pretty straight forward process too. Easy enough for owners to research I would think. Fluids noted. Once again a vac system…
What to check on regular basis is a tough one. Spinners, fluid levels, lighting…. Most people won’t be checking nuts and bolts I have found. Suggestions?

 

[DaveM]

A UK company called Nova acquired the machinery and rights to manufacture Avon tires. They have indicated CR6ZZ tires for Cobras and GT40's will continue.

 

[Bart Perlman]

If no one has asked about the best locations to strap down your car for transport, I think that would be valuable information. Also, the best locations for jacking or lifting the car. I now cross strap through the wheels, but I have no idea if that is the best. I have also strapped around the rear axles and front suspension arms. And can a quick jack be used without damage to the car?

 

[Rick Muck- Mark IV]

If no one has asked about the best locations to strap down your car for transport, I think that would be valuable information. Also, the best locations for jacking or lifting the car. I now cross strap through the wheels, but I have no idea if that is the best. I have also strapped around the rear axles and front suspension arms. And can a quick jack be used without damage to the car?

Yes, the GT40 quick jacks are fully structural and can be used. You can fab a cross bar with a stub that fits in a floor jack to use. Weld tabs on the cross bar that locate to the quick jacks to prevent the car from sliding off to the side.

 

[Markus]

Also, the best locations for jacking or lifting the car.

Where to put the lift arms on a regular car lift - the front (between the wheels) is sensitive....

As for the quick jacks - like Rick wrote above..

 

[Markus]

Maybe some information on tools:
- What tools to purchase (generic for maintenance) metric/inch
- Special tools e.g. wheel bearing adjustment / diassembly
 or
ZF oil type + quantity (beware of differences between RBT and original ZF - I think different oil type is required

 

[Markus]

Got the alignment info covered. Ride height too.
Tire air pressure guidelines a bit subjective to most owners preferences and driving style. But some info is included.
A couple wheel and tire combos noted but Avons no longer an option I believe. All wheel options covered…
No info on coolant change-out tips/info found to date.. But coolant pressure/vacuum & evac. a pretty common procedure I would think.
Brake bleeding a pretty straight forward process too. Easy enough for owners to research I would think. Fluids noted. Once again a vac system…
What to check on regular basis is a tough one. Spinners, fluid levels, lighting…. Most people won’t be checking nuts and bolts I have found. Suggestions?

As for regular stuff to check:
- Wear pattern on tires to indicate problems like wear in front axle ball joints (lower front ball joint need adjustment from time to time - at least on my car.....)
- wheel bearing "play" to indicate need for adjustment...
- lubrication on pedal box to eliminate binding/friction condition

As for brake bleeding - those Wilwood brake calipers need some special treatment e.g. when opening the small bleed niples you need to hold the bigger brass adapter with a wrench or you might unscrew the brass part but not the bleed niple itself..... what sequence the calipers should be done....

 

[BenL]

If no one has asked about the best locations to strap down your car for transport, I think that would be valuable information. [...] I now cross strap through the wheels, but I have no idea if that is the best. I have also strapped around the rear axles and front suspension arms. And can a quick jack be used without damage to the car?

Depending upon the nature of your trailer, I recommend either tire straps that go over the top of the tires (along the tread). This requires a trailer with holes in the bed of the trailer that the straps' hooks can go into so the straps are inline with the tires (I have a 30-year old Brian James Trailer with the appropriate holes). Otherwise, you can use a ratchet strap with a "dog bone" or short strap that you can wrap around the top portion of the tire (see below). Both of these methods will let the car's suspension move naturally as you go over bumps.

When buying tie down straps look for the Working Load Limit (WLL), not the breaking strength. Breaking strength is for a static load. WLL is for a dynamic load (such as slamming on the brakes). WLL is usually 1/3 the breaking strength, so a 10,000 lbs. breaking strength strap is probably good for 3,333 lbs.

Going through the wheel can risk the strap damaging the wheel's finish.

Do not use tracks for securing a car unless they're certified to hold the weight of a car, most are limited to the weight of a motorcycle.

 

[Blas]

Thank you. I’m getting many varied opinions on how to secure the GT for trailering. I’ve contacted Safir for their recommendations. Seeing varied opinions on nose or tail first on trailer too. Probably depends on your trailer length and towing rig…. weight distribution over wheels and tongue weights and all that…. Someone said, “ just drive it” too….
Anyone want to be immortalized in the manual and send some other variation tie-down photos for reference?
Blas

 

[Neil]

Thank you. I’m getting many varied opinions on how to secure the GT for trailering. I’ve contacted Safir for their recommendations. Seeing varied opinions on nose or tail first on trailer too. Probably depends on your trailer length and towing rig…. weight distribution over wheels and tongue weights and all that…. Someone said, “ just drive it” too….
Anyone want to be immortalized in the manual and send some other variation tie-down photos for reference?
Blas

Loading my mid-engine race car on my aluminum tilt trailer entails loading it tail-first to get the proper tongue weight.