Cracked Engine Mount Bracket
- Thread starter Dekker
- Start date
Steve Brookes
Moderator
I had a brace welded onto mine by my indy (Unit 11). It didn't take them long but the primary silencer had to be removed and I think the rear engine tin has to come off too.
MrMoots
New member
Hi Decker
I removed mine today in order the access the crank pulley. Took about and hour or so to strip it off. Quite simple.
Remove heater tube within engine compartment
Remove stainless heater tube under car.
Remove tinware bolts from inside engine bay that hold rear tin in place.
Remove fibre reinforced plastic shields by timing chain covers.
Remove rear silencer
Loosen oil line fitted to engine carrier.
Support engine.
Loosen and remove engine mount bolts.
Then wiggle out the engine carrier and rear tin. I loosened the Cat slightly and got the engine carrier and tin out in one piece, but it maybe easier to detach the tin first than remove separately.[/LIST]
Hope that helps.
Ross
I removed mine today in order the access the crank pulley. Took about and hour or so to strip it off. Quite simple.
Remove heater tube within engine compartment
Remove stainless heater tube under car.
Remove tinware bolts from inside engine bay that hold rear tin in place.
Remove fibre reinforced plastic shields by timing chain covers.
Remove rear silencer
Loosen oil line fitted to engine carrier.
Support engine.
Loosen and remove engine mount bolts.
Then wiggle out the engine carrier and rear tin. I loosened the Cat slightly and got the engine carrier and tin out in one piece, but it maybe easier to detach the tin first than remove separately.[/LIST]
Hope that helps.
Ross
Dekker
New member
Hi Ross, thanks for your reply.
I got it off eventually, took me the best part of 3 hours, no doubt I'll be faster next time.
The big sticking point was the tinware surrounding the engine mount bracket, I was almost thinking that the distributor needed to come out before one more try to see if there were any screws I'd missed and I gave it one more pull and it slid back allowing me the space to get the bracket out.
It'll be fun to put back, I'm sure (sic).
Do you use a manual? I was wondering on the Haynes for earlier 911's hoping that there wouldn't be too many differences with the 964's. What do you think?
Now I'm off to find a welder.
Thanks for your help, Dekker.
I got it off eventually, took me the best part of 3 hours, no doubt I'll be faster next time.
The big sticking point was the tinware surrounding the engine mount bracket, I was almost thinking that the distributor needed to come out before one more try to see if there were any screws I'd missed and I gave it one more pull and it slid back allowing me the space to get the bracket out.
It'll be fun to put back, I'm sure (sic).
Do you use a manual? I was wondering on the Haynes for earlier 911's hoping that there wouldn't be too many differences with the 964's. What do you think?
Now I'm off to find a welder.
Thanks for your help, Dekker.
MrMoots
New member
Hi Dekker
I use a combination of manuals.
Porsche factory manual which you can get on CD from various places.
Adrian Streathers 964 Enthusiasts companion published by Bentley
Technical Guesswork again published by Bentley[/LIST]
Attached is a of photo (hopefully) of my own engine mount bracket that I reinforced earlier in the year.
The engine mount to mounting bar is 85 Nm and I think the mounting bar to the engine is around 45 to 50Nm.
Hope this helps you.
Ross
I use a combination of manuals.
Porsche factory manual which you can get on CD from various places.
Adrian Streathers 964 Enthusiasts companion published by Bentley
Technical Guesswork again published by Bentley[/LIST]
Attached is a of photo (hopefully) of my own engine mount bracket that I reinforced earlier in the year.
The engine mount to mounting bar is 85 Nm and I think the mounting bar to the engine is around 45 to 50Nm.
Hope this helps you.
Ross
Dekker
New member
Hi Ross,
I got the bracket welded today and offered the parts into position to see how they'd fit and found
a problem with the new engine mounts.
I'm using 993 mounts, which I've research on forums and makes a cheaper upgradeto the 964's.
The nut at the top of the threaded shaft that locks into the cut-out on the face of the bracket so the
shaft won't turn as you tighten up the nut. Well on one of the engine mounts it's off by 90 deg.
If I put it in and tighten the nut up it'll either twist the rubber and possible damage the inner structure
of the mount or not twist and therefore add the thickness of the nut to the engine alignment on one
side of the engine.
I don't know if you've heard about such issues.
I might have to get a spacer made up to get it to work properly.
As for the books, I have the first two but not heard of the 3rd, I'll do some research.
Thanks again for your help, Dekker
I got the bracket welded today and offered the parts into position to see how they'd fit and found
a problem with the new engine mounts.
I'm using 993 mounts, which I've research on forums and makes a cheaper upgradeto the 964's.
The nut at the top of the threaded shaft that locks into the cut-out on the face of the bracket so the
shaft won't turn as you tighten up the nut. Well on one of the engine mounts it's off by 90 deg.
If I put it in and tighten the nut up it'll either twist the rubber and possible damage the inner structure
of the mount or not twist and therefore add the thickness of the nut to the engine alignment on one
side of the engine.
I don't know if you've heard about such issues.
I might have to get a spacer made up to get it to work properly.
As for the books, I have the first two but not heard of the 3rd, I'll do some research.
Thanks again for your help, Dekker
Steve Brookes
Moderator
The issue with the mounts sounds strange. I didn't think the 993 ones were handed and quite a few have now installed them successfully. Including our very own Dave Wilkinson who I am sure will be along soon to comment.
Dave Wilkinson
New member
Yep, spoke to David (Dekker) on the phone yesterday and confirmed that the 993 mounts were installed by RPM without any drama a couple of weeks ago. I did suggest to David to give Ollie a ring at RPM and I don't know if there was any useful outcome of that. The mounts I used were from the same source that David bought his so if there was any issue I would have expected Ollie to notice.
ETA: Just to mention that the 993 mounts are NOT handed.
Regards
Dave
ETA: Just to mention that the 993 mounts are NOT handed.
Regards
Dave
Dave Wilkinson
New member
Ross,
The parts were bought as 993 375 049 05 (link to eBay seller here) but I'm not entirely convinced that they are pukka Porsche parts - more like pattern parts TBH. After David raised the issue of the fitment I checked mine (as best I could) on the car and there is no obvious sign of a fitment problem - both sides seem fitted snugly as you would expect.
As mentioned above, the 993 parts are not handed, with PET calling for 2 of the same part to be fitted.
Regards
Dave
The parts were bought as 993 375 049 05 (link to eBay seller here) but I'm not entirely convinced that they are pukka Porsche parts - more like pattern parts TBH. After David raised the issue of the fitment I checked mine (as best I could) on the car and there is no obvious sign of a fitment problem - both sides seem fitted snugly as you would expect.
As mentioned above, the 993 parts are not handed, with PET calling for 2 of the same part to be fitted.
Regards
Dave
Dekker
New member
Hi, thanks for the messages.
I took some photos to show the disparity between the 2 types of mount and in the process of cropping and re-sizing them the computer locked up and I lost it all
so it'll have to wait until I have more time.
However the difference between the orientation on the nut is not as great as it first appeared and it looks nearer to 15 deg than 90.
So I thought I'd fit it on the right side as it is the easiest to get to and if it didn't fit I could use the old one until it's sorted as one of
the originals was much worse than the other.
So yesterday I tried to get the bracket and mounts fitted and found it just wasn't right. Eventually I put a straight edge along the bracket and found that the
welding of the strengthening gusset caused it to warp. So back to the shop and 5 mins under a press sorted it but that wasted an afternoon.
Today went better, bracket is installed and the mounts too but the right hand one is not quite right in that it is not firmly flush to the bracket face like the
left side. However I expect when I remove it, it'll show a mark where the judicious use of a grinder will relieve the problem.
Anyone doing this installation shouldn't be put off unduly by my experience as I think I was just unlucky.
I would warn others to remove at least an inch from the threaded shaft of the mount as it is much longer than the 964 type and will foul even the deepest
19mm socket.
Dave... I phoned Ollie but he'd gone home so I went to his site and sent him an email which he kindly responded to. He didn't have any issues with the ones
fitted to your car.
Ross... I can confirm that they are not handed and even though the 964's are, the nut alignment on the shaft is exactly the same.
Thanks for all your help, Dekker.
I took some photos to show the disparity between the 2 types of mount and in the process of cropping and re-sizing them the computer locked up and I lost it all
so it'll have to wait until I have more time.
However the difference between the orientation on the nut is not as great as it first appeared and it looks nearer to 15 deg than 90.
So I thought I'd fit it on the right side as it is the easiest to get to and if it didn't fit I could use the old one until it's sorted as one of
the originals was much worse than the other.
So yesterday I tried to get the bracket and mounts fitted and found it just wasn't right. Eventually I put a straight edge along the bracket and found that the
welding of the strengthening gusset caused it to warp. So back to the shop and 5 mins under a press sorted it but that wasted an afternoon.
Today went better, bracket is installed and the mounts too but the right hand one is not quite right in that it is not firmly flush to the bracket face like the
left side. However I expect when I remove it, it'll show a mark where the judicious use of a grinder will relieve the problem.
Anyone doing this installation shouldn't be put off unduly by my experience as I think I was just unlucky.
I would warn others to remove at least an inch from the threaded shaft of the mount as it is much longer than the 964 type and will foul even the deepest
19mm socket.
Dave... I phoned Ollie but he'd gone home so I went to his site and sent him an email which he kindly responded to. He didn't have any issues with the ones
fitted to your car.
Ross... I can confirm that they are not handed and even though the 964's are, the nut alignment on the shaft is exactly the same.
Thanks for all your help, Dekker.
Dekker
New member
I took the right mount off and indeed it was marked and exactly 90 deg out of alignment so I did a little grinding and it now fits flush.
I've been on a small test run and everything feels solid and fine and yes the gear change seems sharper too.
Now to the next job.
Thanks for all the input guys.
Cheers, Dekker.
I've been on a small test run and everything feels solid and fine and yes the gear change seems sharper too.
Now to the next job.
Thanks for all the input guys.
Cheers, Dekker.
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