Heidt's IRS in a Z car???

[Guest TAyres]

Think this would work in a Z car?

http://www.heidts.com/heiirs.htm

Its MADE for the American V8. It comes in custom widths, so how wide should it be for a Z car? ...how wide is the track on a Z car anyway?

It is expensive, yes. But I'd rather do it right once than have to buy three R200's and keep putting them in.

 

Any thoughts?

 

I thought about a Mustang Cobra IRS, but they're not as easy to come by as I'd hoped.

 

Suggestions? Input? ... Anyone?

 

Thanks All

 

P.S. - I know of the search feature. I hadn't seen this particular IRS metnioned, so I figured I'd give it a shot.

[CruxGNZ]

I thought of this as well. But I only got as far as bookmarking the website . Here's some dimmensions for you: 240Z General Chassis View and 240Z Chassis Dimmensions

 

!M!

[wheelman]

Welcome to the board.

 

How much power are you planning on running through your rearend?

 

An R200 should be able to handle enough that you start running fast enough times that the drag officials will force you to swap to a live axle setup. The weak point in the Datsun IRS isn't the R200, it's the half-shafts and/or stub axles.

If you swap those out for 300ZX Turbo CV axles or 280ZX CV axles the half-shafts are eliminated which leaves the stub axles. Ross at Modern Motorsports makes billet stub axles that should handle just about anything you can throw at them at a much lower total cost than the Heidt unit.

I have to say though that the Heidt unit is very nice looking and I like the inboard disk setup, although changing pads can sometimes be a pain.

 

Wheelman

[Pop N Wood]

That system uses the half shafts in lieu of upper control arms.

 

I have read that this IRS ends like are what caused racing bodies to require solid rear axles. Bust a half shaft and the rear end wheel has no support.