Engine Mounts again...and again...

PostPost by: Gopherit » Sat Aug 02, 2008 10:24 am

On the way back from Classic Silverstone last weekend (great event, highly recommend the |Retro Run - great value for money, couldn't find the Elan.net hospitality??) we noticed a clonk changing up. Felt familiar and indeed it was, you guessed, exhaust side engine mount going 2 separate ways!

I think I have been through all the previous postings on this subject, but now it comes to replacing again I am unsure what to do - as it's a pig of a job I want something that lasts.

My brief summary of options:

1. Fit the std type and don't expext longevity
2. Fit TTR modifed road type - sounds from postings as if this comprises filling the top of the "U" with silicone or poly-U. Uncertain about life of these??
3. Fit race mounts and significantly increase NVH to a possibly unacceptable level.
4. Fit a Ford road/rally type if one can be found thsat fits. I am still investigating this, but it may have same probs as (3).
5. Make up my own design. I was thinking of using the "U", brazing the chassis 2-bolt plate to a steel tube as per the very crude diagram attached. I would probably ONLY do this on the exhaust side so that flexibility was not decreased too much.

Comments?

BTW - is the mount a standard Ford part?
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PostPost by: ernest87544 » Sat Aug 02, 2008 11:04 pm

Approach #5 looks like an excellent design. Good luck.
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PostPost by: bcmc33 » Sun Aug 03, 2008 5:10 pm

I think option 5 with a pair of flanged poly bushes could work.
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PostPost by: Gopherit » Tue Aug 05, 2008 8:05 pm

Answering my own question it would appear that the standard mounts for the +2 are good old 105E Anglebox. Something around ?12.50 each from various classic Ford suppliers. Bearing in mind the original Anglias had about 50bhp it's not surprising these do not last that long!

From my point of view, a day after posting this thread the Club Lotus mag dropped through my door with an advert for a pair of TTR racing mounts. I bought them but was nervous about them being too stiff, so I opted for the following:

Only fitted the racing mount to the exhaust side.
Modified the 2 Top Hat Poly-U bushes by drilling 6 5mmdia holes radially, in an attempt to "soften" the setup.

So far, brilliant! The old mount must have been on the way out for some time. Gearshift is now very precise, no clonking on gearchanges and any increased vibration is relatively imperceptible.
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