similar in that they have a threaded body and are nitrogen charged...

You can but adaptors for about $200 from The Racers Group, Rebel Racing, and probably others. I don't have oem shock towers so I will be making something myself.

There is a fill valve on the end of the canister that you can't see in the pic.

140-150 lb

Those look great Chris, but what shocks will need to be run on the front? I'm currently running Koni yellows, but haven't changed anything else other than the sway bar (smart racing). Have the Koni's revalved or what do you think?

Randal, you have shocks up front? Us poor guys have struts.

Advance design with spiffy everythings would be cool.

...well chris Mine look virturally identical.. threaded body /adj. spring perch, top knob adjustment, all aluminum, 5.5' stroke, chromed springs (rating ? )as I have not checked them yet...but as they are "carrera", who has been bought out, naturally look slightly dated in some of the details. I'm resonably certain the srader valve could be replaced with a fitting to allow a remote and adjustable pressure cannistor. thanks for the spring rate information. ..murray...

Hey they are yellow and look like the back ones!

Guess I have struts as well.

We're running the Fox shocks from Smart Racing on the Spec 911 ...

http://www.smartracingproducts.com/catalog/rearaxle.htm


I wonder how hard it would be to make these work on a 914?
Andy

Wait, it says right there "now available for your 1969-89 911 and 914" ...


I have to ask Rich about that ...
Andy

I talked to Rich a couple of weeks ago. He said it would be like $2,500 for both the front and back. And yes I told he what my front configuration would be.

He swears by them.

He sells them too ...

They work great on the 911, but that car is at 2400lbs minimum weight.

If i understand the concept correctly, the canister pressure is there mainly to keep the oil from foaming with air-bubbles (thus adding lag to the dampening) and not so much to add/remove spring rate.
Andy

Hayden says the Fox are way too stiff for a 914 AXer.

Kinda what i was thinking. A light AX 914 could be 800lbs lighter than the Spec 911 ...
Andy

Thats just one of the reasons I'm going with the Ohlins. They have a lot of custom valve arrangements available and have 24 position adjusters that provide a wide range with any given valve set. Tomorrow I'll try to find time to scan my shock dyno sheet.
ONe advantage of Fox vs. Ohlins is on the fronts. Fox has a front strut that fits 914s. Ohlins requires a "Kit" shock with custom made spindles, which ends up pretty expensive.
I'm going to stick with my Bilstein front inserts. Generally speaking 914s have more trouble with grip at the rear end so I figure the fronts can be left as is and I'll use the adjustable rears to tune around them.

I test drove a 914 vintage race car on our AX venue last summer. A friend was thinkin' about buying it. It was totally unsuitable for AX at any venue I've driven with the possible exception of Marina. It literally bounced across the bumps. The fella does fine on the big track at PIR.....that track is smooth as a baby's ass.

My buddy got scared off by it.... tho I assured him it could be set up to run with practically no out-of pocket- expenses....there was a ton of valuable extras. It had a lot more motor than mine but the power band was wrong for AX.....that is a relatively easy fix.

OK gentlemen, what front shocks will work best with Chris's back ones and what needs to be done with them to make them work in a light front end car?

Get the fox shocks and have them re-valved for the spring/torsion bar you are going to run on the car.

Basically you change and orifice for high speed and a few shims for low speed.

certainly FOX shocks are rebuildable and re-valveable. But you got to know what kind of curve you want so you can tell the guy with the shock magic shims and dyno what to make.

I'd go with Bilstein HDs right out of the box.