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Old 02 December 2011, 15:22   #11
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
Originally Posted by Turbodiesel
Problem - worn lower engine mounts, top ones are perfect. Both lower mounts have excessive play - quoted £750 to replace via local Engineers. Fair enough

You didnt ask us for a quote thats why!!
How much would you have quoted ? It may not be resolved just yet!

Peter ~ Boatsandoutboards4sale ~ ~ 07930 421007

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Old 07 December 2011, 11:59   #12
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
Ok pictures as promised.

Bearing in mind this is not a final repair. We aim to put the boat on the water tomorrow for testing then will buy new mounts/bushes to replace what we've fitted at the moment (from a vast array of leftover car mounts etc). We will also be machining down the stainless washers to the same diameter as the bracket, to ensure a natural looking design.

From the initial testing we have done its far superior to the previous system. Also it benefits from being able to be removed, replaced or even just adjusted to account for "wear", which the previous system never had. I see no reason for this not to be a better option for repair in place of removing the powerhead!

Parts used were as follows (required for each side/mount)

2 Torsion suspension bushes (not visible as located within the lower tube housing)
2 Suspension bushes
2 Large stainless washers, (machined out to same diameter as the mounts)
2 Small stainless washers
1 Stainless Bolt (130mm length M10 - 10mm diameter)
1 Stainless Locking nut (17mm)

You will need the existing stainless frame which connects the mounts behind the leg. This part will never fail

The theory is the main mount (hidden, we decided against a perfect fit press in type, instead went for a "tight" fitting and use washers to secure) will still take the strain, to prevent it simply slipping in/out the large washers act as a stop each side of the housing (this does the job of the "chemical bonding" was failed causing the fault). The extra bushes take up the slack and assist in taking the strain/vibration. The final, smaller washers prevent these from crushing up on the bolt.

Total cost will be about £25 in Parts (when bought new, current cost about £8 using what we had). Labour around 1 hour to devise, test, adjust, fit, re-assemble cowling.

Total saving = around £700 dependant on quote! Obviously had the top mounts had any signs of wear then this is not a suitable repair and you would need to replace the entire unit. If like ours thy were perfect and it's just the lower mounts that were shot, this will resolve that problem.

JOB DONE...I hope

Peter ~ Boatsandoutboards4sale ~ ~ 07930 421007
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