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Engine mounts

19 Oct 2010, 4:51pm
Needs to make up some engine mounts to put my M20 into my Cabrio, Marlin wanted £280 for a set so the easy route is out of the equation and I will be making my own.

Wondered if M20 owners could tell me what gauge steel the engine mounts they have are made from.

I would like to use a folded design with welded in triangulated stiffeners so all the weight is not taken on the welds alone as would be the case with a plate bolted to the engine with a u style section welded to the face of it.

On the Marlin supplied mounts used on the engine I am replacing, the design relied totally on the integrity of the butted weld joint between the arm and the plate bolted to the block which I never really liked.

I was thinking in terms of 3 - 4 mm mild steel plate as I don't think it will be possible to fold something much thicker.

Any thoughts on or pics of the Marlin supplied mounts regards thickness and design or lack of it.

Cheers

John
19 Oct 2010, 7:01pm
As I remember the Marlin supplied mounts are made from about 4mm steel.

Robin
19 Oct 2010, 9:22pm
The Marlin engine mounts are fine and I've not heard of any problems.

You should be able to see the construction here....


Engine being lifted to re-fit gearbox by marlinpeter, on Flickr
(If you click on the picture above it will take you to larger version.)

I'm surprised at the price, because Terry charged me just £50+vat for a pair of M52 engine mounts.

As Martin says, I think they a 4mm thick.

...peter
20 Oct 2010, 4:03pm
Hi Peter

Thanks for the picture, very useful.

I to was also quite surprised by the price provided by Marlin, it was justified by the need to custom fabricate the mounts as it was for a Cabrio/Hunter and they estimated it as two days work.

Given the fact that they have produced these before it seemed a tad strange, I suspect in reality they just didn't want to supply them and so priced the job to ensure they would not have to.

Its not a particularly big deal for me to make them, I just thought buying mounts at a sensible price from Marlin would be an easier choice, it would appear that's not possible.

Thanks again for the picture link.

Regards


John