Engine mount rubber thickness - RB30 Patrol

[dom14]

Hey Guys,

I've noticed the right side engine mount is significantly thinner than the left side one.
While I understand left side engine mount need bit more meat to absorb the vibration from clockwise turning engine internals, I'm wondering whether this is bit too much.
Can you please have a look the the pictures give me some idea?

Thanx

[Dybo]

I wouldn't have thought it would matter. Sure it means a slight change of angle of the engine, but it wouldn't be much. Might lay your gear sticks over tiny bit. The rubber is simply to absorb vibration - unless someone wants to correct me I don't reckon the thickness is that important...


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[dom14]

I wouldn't have thought it would matter. Sure it means a slight change of angle of the engine, but it wouldn't be much. Might lay your gear sticks over tiny bit. The rubber is simply to absorb vibration - unless someone wants to correct me I don't reckon the thickness is that important...


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I've been speculating whether a lack of thickness of the right engine mount rubber caused engine to tilt right a little and affecting the flange gasket to fail(exhaust flange gasket has been failing for a while regardless of checking all other possibiliteis of faults.

[Dybo]

Anything is possible, but I would have thought that the rubber hangers for the exhaust would have compensated for a slight twist. Perhaps the exhaust was unbolted when/if the engine mount was replaced and not bolted back together correctly?


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[dom14]

Anything is possible, but I would have thought that the rubber hangers for the exhaust would have compensated for a slight twist. Perhaps the exhaust was unbolted when/if the engine mount was replaced and not bolted back together correctly?

I doubt it. This flange gasket constant failure is a recent thing. Engine mounts were replaced around four to five years ago by a pro mechanic. So, I would've thought he's done a good job. And it's not necessary to touch the exhaust system to replace the engine mounts, afaics. The left side gearbox mount would be a different thing, 'cos exhaust pipe mounts onto the same chassis bracket as well as the left gearbox mount. Only thing left for me to do now is add extra cushion rubber washers and perhaps a spring to that exhaust pipe mount. Checking the exhaust manifold flange surface for flatness & the exhaust pipe flange for flatness have been already done. But, I will be doing it again tomorrow for one last time with a steel ruler & feeler gauge. I will fit new studs to the manifold flange and fit it back again with exhaust sealnt caked between the sandwich pieces of the flange gasket. If it fails this time,
I will be calling it quits with the stock exhaust and start looking for a good exhaust extractor kit.