cfjan

I'd say the side closer to the engine mount, as that's how the original engine mount is setup (has the square casted as part of the engine mount screw)..

How about the regular round washer? (the kit comes w/ 2 big ones) Do you use it on the top, between the screw head and the engine mount?

996FLT6

Aren't u guys worried at all that with solid mounts that it's directly tied to chassis that cause softening of the chassis? Even cupcars need refreshening of the chassis ie total stripdown to tub. I would think driving on streets would make it worse. Mike

cfjan

From what I understand, Cup car sometimes crack the carrier.. so you'd need to weld that back or replace it.. but not damaging the tub.. but I don't know..

The engine mounts are mounted on aluminum box sections, then the box sections are mounted to the chassis.. I am hoping that the box section spread out the load sufficiently onto the chassis.

996FLT6

I assure u they refresh the tub as well not just carriers : ). But hey -doing mods that actually have a benefit on track is great but there is always a downside. Mike

mister_po

Cfjan

I found the supplied washers and nuts to be too small like mikymu pointed out. I think I am going to use the squared washers on the bottom side with the supplied nuts.

cfjan

Don't you re-use the stock washers on the bottom end?

Fritz Flynn

I have some barely used wevo mounts.

New rennline mounts.

Stock mounts in good shape.

PM me if interested.

996FLT6

Neway kinda curious other then racing which reaps nice benefits- what are u looking for in terms of having a solid engine mount for a street car? mike

cfjan

The same idea behind putting in monoballs on the suspension, etc. !

996FLT6

monoballs(easily replaceable) are good but why engine mount if car is not 90% track? mike

cfjan

Motor mounts are DIY, and much easier to change out than monoballs links.. (and does not require alignment after you swap them) You take out the airbox and put a jack under the engine, and you are ready to go..

I guess my point was just that it is another piece of rubber in the system.. people change it for the same reason why people put in monoballs links.. taking out rubber from the system..

Doesn't the Cup car use the same cast upper links as the street car (but with solid tranny and engine mounts)? So people are changing out the links without thinking twice, but thinking the mounts do not offer as much benefit? (I don't have answer, but just pointing out the priority from the factory.. i.e., they change out the mounts prior to monoballs the suspension...)

The only reservation I have would be if it would do damage to the chassis.. while monoball links do not have that issue, I suppose.

996FLT6

Suspension has play no matter what u do to it ie it is a shock absorber- no
matter how stiffly sprung(aftermarket or revalve/spring) it is still a shock absorber. Solid motor mounts don't have that luxury. Still need a definitive answer why go solid mounts if not 90% track? Mike

cfjan

I don't disagree with you there Mike.. regarding is it "necessary" if it is not a full-time track car, whether it is "needed" or not. I was just pointing out the reasons I think people change it out for.. taking out the rubber so the engine assembly does not move within the chassis.

And like I said, in a Cup car, Porsche engineers changed out the motor mounts before changing the links to monoballs. (I think only the RSR gets the monoball links) So we can argue that for car that's not 90% track (as you put it), the monoballs are probably not needed either, etc.

And it is probably true.. I know changing suspension components / engine mounts / etc. doesn't really make me any faster.. but we often do a lot of things and have this romantic notion that our street car is now "closer" to a Cup car..

996FLT6

Suspension in a STREET GT3 is a key element. U look thru all the archives our 6gt3's lives and breathe on it so its a justifiable upgrade to monoballs wo much downside. Even with rubber engine mounts they wear. What u think happens when u apply solid mounts? It has to go somewhere. Mike

cfjan

This is purely from my speculation.. so no proof whatsoever, etc. The difference between monoballs and engine mounts is that the engine mounts are not designed to move. Monoballs are "joints".. Technically, there should be no wear at all when you have solid engine mounts. The stock engine mounts wears because there's movement built-in due to the rubber component. (The engine moves around and that push and stretch the rubber, etc.) When the engine are mounted solid to the chassis, there should be no wear. Of course, in return, you get vibration from the engine transmitted to the chassis, etc.

Whether there's long term problem or not (having such a heavy piece of assembly (the engine assembly), mounted to the chassis directly), I am not sure. From Mikymu's post, it sounds like some Cup cars develop cracks on the engine carrier bracket, but I don't know if that's the direct result from the solid engine mounts or not.