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The turbo and gt2 use the same motor mount and both have a spacer under the motor mount. I'll take some pictures later.
I think the difference is because the gt3 is a narrowbody and the turbo/gt2 are widebody.
@3/98 911 coupe can you keep your travel blog entries out of the technical discussions? Make your own build thread and you can post all your random musings to your heart's content there.
Yea but the gt2 uses the same chassis sheat metal mount as the gt3. Just seams weird it share the turbo mount.
I don't know what they were thinking. Maybe because the GT2 is actually a rear wheel drive Turbo chassis with no provision for the front wheel drive hardware, so they used the GT3 panel? With the heavier Turbo engine so they used the Turbo motor mounts?
Anyway the rennline motor mounts are supposed to work on GT2 and GT3 and Turbo so they must be compatible.
I am sure you can source that panel from a Turbo wreck and make it work properly.
I actually found a new turbo panel for less in ebay then the yard will cut it out for. I may just remove my c2 mounts and alter/weld them into the correct position. Need to do more research and measuring.
Looking at the GT3 sheetmetal, I'm guessing the mount goes into the rounded corner area, secured by two bolts? I was confused as to how this worked, looking for a pocket or recess like the standard car has.
Yea there is no "cup". There is an aluminum adaptor that goes in top of the sheet metal that has 3 holes. The middle hole secures the adaptor, the 2 outside holes allow the motor mount bolts to fo through them. The mount kind of floats. Ill get a pic.
@De Jeeper are you keeping track of hours on this? Be nice to know what this bad *** project is gonna "cost" you not in $$$.
Not really but ill try to approximate. Not really good keeping a time sheet. Im guessing ill have around 150hrs into it. At $100/hr that would be on par of a renegade ls swap or even a standard mk2 motor into a mk1.
I don't have a decent picture handy, the picture above is identical to the Turbo motor mount setup.
Regarding positioning the CV joints.
The front trans mount on all 996.2 Tiptronic cars with the Mercedes 722.6 transmission is identical. This includes C2/C4/C4S/Turbos. The 722.6 Tiptronic transmission mount is the same as the G50 manual transmission mount (GT2/GT3/Turbo).
The C2 body sheetmetal in the floorpan area is the same for 996.1 and 996.2. So, we can say that the attach point for the front trans mount is in the same place. I'm talking about the two threaded studs sticking out of the floorpan.
The Tiptronic/G50 trans mount uses a curved metal bar that bolts to the floorpan, then the trans mount bolts to the curved metal bar.
I believe that if you swap the curved metal bar over you will force the CV joints to be in the correct location. Then the engine mounts can end up wherever they may want to be and everything will be in alignment.
Oh, obviously you'll need to swap all the coolant hard lines from the center rubber hose back. I believe the front hard and soft lines are the same for all 2-radiator setup cars.
I don't have a decent picture handy, the picture above is identical to the Turbo motor mount setup.
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i agree with both your posts entirely. The above statement is most important to me. Is there any way possible you can get me a pic if the mount area? All the pet drawings show that part as being different both in numbers and pictures. I have found that section at a wrecking yard and may want to get it but im unsure if it will work
nevermind, i found this and it clearly shows the mounts to be the same. I wonder why the gt3 and turbo have different part #s?
i agree with both your posts entirely. The above statement is most important to me. Is there any way possible you can get me a pic if the mount area? All the pet drawings show that part as being different both in numbers and pictures. I have found that section at a wrecking yard and may want to get it but im unsure if it will work
nevermind, i found this and it clearly shows the mounts to be the same. I wonder why the gt3 and turbo have different part #s?
Here's what I think: The Turbo uses a hydraulic motor mount, filled with fluid to minimize NVH. The GT2 and GT3 use a stiffer motor mount, as NVH is less of a concern.
I am absolutely certain the Turbo uses a hydraulic motor mount as I have changed them on both of mine. Not sure about the GT2 and GT3 though.
06-09-2021, 11:14 AM
