FFR Cobra with a 4-lug bolt pattern???

[CobraEd]

less unsprung weight

Actually, aside from looks, it makes no difference at all.


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[NCSNAKE]

How critical do I need to be concerning donor car parts??? If the spindles/hubs are 4-bolt and the axles are 4-bolt does that make for a lesser car. I'm assuming that the FFR's come with much of their own frame and suspension pieces? Any guess to what the rear is hung with? I know it has discs and adjustable coil overs at all four corners. Rear end itself is a cobra racing piece with 3.55 gears. Tremec 5-speed trans and a fuel injected 5.0 with heads and cam.

[Silverback51]

The only thing I will mention is that they (the engineers) went with 4 lugs, as that was all that was necessary to handle the loads that the lugs would see on a Mustang.

If you start modifing the engine, suspension, and tires where you greatly increase those loads, you may have a problem.

[CobraEd]

Originally Posted by Silverback51

The only thing I will mention is that they (the engineers) went with 4 lugs, as that was all that was necessary to handle the loads that the lugs would see on a Mustang.

If you start modifing the engine, suspension, and tires where you greatly increase those loads, you may have a problem.

A Cobra is about 1,000lbs lighter than a Fox body Mustang.


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[Silverback51]

Originally Posted by CobraEd

A Cobra is about 1,000lbs lighter than a Fox body Mustang.


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That is a static load. I'm talking about the dynamic loads the componets can see under acceleration, braking, and cornering.

It's true that the overall weight reduction will affect those loads, but there is a lot of difference between a car that weighs 3500 pounds and only pulls .65 to .70 G's in a corner, and a 2500 pound car that can pull .95 to 1.0+ G's in a corner. The same principle applies to braking and acceleration.

[jhv48]

Examine that car carefully and ask the owner for proof (receipts) if he claims that the parts are all new (non donor).

If donor parts were used, it's a crapshoot. Go very low on the price, as you are really buying a VERY used car and may have to rebuild/replace all the donor parts sooner than later.

A FFR with all new parts would be a better value and can be had relatively cheap in this economy. (Cheaper than buying all the parts and assembling them yourself).

[CobraEd]

The single point of most stress when accellerating is on . . . Wait for it, . . .





. . . . . One Pinion gear tooth and One Ring gear tooth.

Think of a car pulling a wheelstand off the line. All of that is being held by one tooth on the pinion and one tooth on the ring gear


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