Hot dang fab! Need to gets me one of thems dog bones LOL (Midwest Slang for the people who may have thought I lost my mind for a minute)

Fab that looks fab!

 

Fabryce, sounds like very thoughtful improvements. Keep up the great work! I will be interested in more discussion on performance results with these changes.

 

great job! you guys sure know your stuff! now how much was the exhaust???

Alan

 

I am very impressed. Keep up the good job!

A question, do the Motons sit much lower than the stock suspension? Maybe making road clearance an issue?

 

both stock and motons are coilover systems... it can be adjusted to suit your driving needs and tastes...

Alan

 

I know but a set of Motons I had tried for the M3 had much less travel resulting in a significant drop of height that made it a pain in the *** in urban streets...

 

nice work GMG

 

Fabryce i have sent you PM's not sure if you got them?! I would like to know your opinions on a great setup with the Motons for the GT2, and what affordable added components can make an even better setup, i see so many additives to the car, so confusing!

Martin

 

This is a good question and limiting issue for many potential buyers, since 997 GT3s are so damn low to begin with.

On my 996 GT3, I went with a custom Moton with extended droop travel so I could maintain stock ride height. Given the chassis similarity and b/c the Moton damper is likely the same short bodied structure, it would seem the same thing can be done. However, those shocks took months to build by Moton since they were so backed up.

If you don't have enough droop travel and you run too high a ride height, the inside dampers will 'top out' under hard cornering and possibly during street driving on bad surfaces. Not good, and can especially screw up handling balance at the limit.

Comparisons with the M3 aren't that germane b/c they come jacked, 4x4 stylie from the BMW in comparison to the GT3.

 

Also, Fabryce, did you have to do any electronic trickery to disable PASM? My understanding is that unplugging the PASM senders (as in the case of a Moton retrofit) would throw error codes. Or, did you leave the senders intact and position them out of the way?

 

If you dont want to post can you PM me with a price.

 

I'm told PASM can be turned off with the PIWIS.

 

The Mot's can be rebuilt with the internal bump stop set to whatever range of motion is applicable. I've seen cars with very short droop, which is just a mistake and can be corrected by a Moton service shop.

I don't think the 997 GT3 is too low for the street. The very long front overhang leads to some issues, but I can usually angle across driveways etc.

I wonder if there might be a better choice than steel body dampers. The GT3 is getting to be a very heavy car (3300lb) and could do with any uprgrade also helping to add lightness. It might be a lot more expensive, but an alloy body Ohlins damper might be a good idea.

The idea of replacing the suspension arms with rods is a conventional solution, but I'm curious to see a shop like GMG put the RS rear end geometry on the GT3.

When I first got the car, I was in a hurry to do something about PASM, but after some track time, I want to keep playing with it. It's never going to compare to a decent set of dampers from Moton/JRZ/Ohlins etc., but it is pretty effective and it's part of the whole experience of learning the new car before making changes.

Having set the ride height and changed the alignment settings to the "race" numbers, the car has improved significantly -- it arrived at pretty close to the "street" numbers but the ride height was low according to the service specs.

I have noticed the same "compliance" in the rear that plagues the 996 GT3. Solid mounts in the rear seems like the first step.

The anti-roll bars are set at 3/5 and 3/3 (stiff) but it still has excessive understeer, so I might bring it down to 2/5 on the front. I might also need an adjustable drop link since the rear bar doesn't seem to be in the middle of its range. Hard to say. Early days.

 

Understood.

Except the alloy shock bodies, I don't think there's much weight to be saved, at least enough to be felt in a 3300 lb street car. And the shock bodies only count as partial unsprung weight unlike wheels/brakes.

RS rear: me too, and am hoping that the suspension is compatible with the narrower track of the 3 over the RS.

 

Great job Fabryce. I guess Frayed asked the quistions I was going to ask so waiting for your reply.