I thought my gearbox was on its way out as everytime i put the engine in gear(Volvo 2001) there was a rattling/grinding noise coming from below,it turned out to be the port side front mount had come loose,
Tightened it up, no noise,Pheeeeew.
Results 11 to 17 of 17
10-02-10, 17:56 #11Registered User
- Join Date
- Jan 2007
10-02-10, 18:33 #12
That might be an extreme but I did once find on my own boat a stud to an engine mount ( Volvo 2003) which had sheared completely but was invisible until the engine was lifted up with a crowbar.
I'm guessing you have a 1GM. If so the mounts are very soft and also the rubber which is vulcanised to the steel of the mounts does detach over time as the steel rusts. A handy technique to check is to use a crowbar between blocks of wood to gently lift the engine whilst the mounts are still fixed. You will soon see whether the rubber is still attached or has come loose.
The 1gm does vibrate at rest and is not the smoothest on the run either.
10-02-10, 18:53 #13
The engine usually runs at about 2200 revs to give 6 - 7knots. However when full throttle was used vibration appeared. On inspection, the rust had made the rubbers delaminate from the metal covers, allowing the engine to be pushed upwards "off" the mount under full chat.
10-02-10, 19:26 #14Registered User
Location : Suffolk
- Join Date
- Feb 2008
If you do have to get new mounts and are shocked by the price of Dealer prices, try Trelleborg who took over the Metalastic range from Dunlop years ago. Marketed as 'Metalastic Cushyfloat'. If yours look like the Metalastic ones the chances are they are. They should be marked on the old ones the correct model no. with the rubber hardness.
MUCH cheaper than the Dealer ones, particularly if you can get them at Trade Price.
10-02-10, 20:12 #15Registered User
Location : Midlands -a long way from the sea!
- Join Date
- May 2008
I recently bought 4 new RAB2 mounts for my Buch DV24 for the princely sum of £72.02 (inc. postage) from this company.
10-02-10, 20:24 #16
Thats what I said on the other post
10-02-10, 21:32 #17
The two broken pieces of the mount ended up about 5mm apart, a vertical movement which must have put the engine alignment out of kilter. With hindsight I should have pursued the occasional 'knocking' noise coming from the engine bay (generally at engine start-up) with more vigour. And on the same basis I guess it could explain the very small, but unstoppable, drip from the shaft seal.
Tracing it back, I reckon the mount cracked when I picked up a stray mooring line which wrapped round the prop and stopped the engine with something of a clunk.
The new mount (a VP replacement part) is a much beefier affair than the old one, which is now listed as obsolete on the VP parts list
Last edited by ITH; 10-02-10 at 21:37.