Hi All,
Having a few problems with my boat. It's a mash of a Volvo AQ211a V8 block married to the original Merc V8 ancillaries (manifold, risers, ignition, leg, transom shield etc). Both blocks were GM blocks anyway ÔÇô (only difficulty I've found so far is that the exhaust risers have to come off to get a socket onto two of the plugs but that doesn't worry me to much).
Out last weekend, cruised at 30kts for 15 mins, came to leave and knocked her into astern. When I came to move the stick forward into ahead I got the revs but continued to move astern (just faster). She appeared to be stuck in astern. I killed the engine and had a look. All seemed ok so started her up and this time I couldn't select any gears.
A few weeks previous to the trip my marine mechanic had re-adjusted the gear linkages after removing the leg to service it. We had been out once since with no problems although that trip was only short.
My mechanic seems to think (which I find odd) that the marriage of the AQ211a might not be working. I have spoken to a Merc trained mechanic who has said that the Alpha 1 leg can handle up to 300hp and is widely accepted as one of the most reliable legs ever made. My leg is geared correctly for the higher output of the AQ211A (as confirmed by my own mechanic previously). The linkages for the leg are still Merc linkages that are bolted to the exhaust riser (as it's also a Merc riser). So in terms of linkages sending messages to the leg, it's all Merc as it was previously.
I can't understand why my mechanic thinks it could be a problem with the marriage of a VP to a Merc leg when all the controls for the gears are original Merc and all the block does is provide the suck, squeeze, bang, blow when required. Do you think he might be covering his behind or might he have something?
NOTE: (Temps are always spot on, ignition is Merc Thunderbolt and always starts on the button.)
Anyone got any ideas or suggestions?
Having a few problems with my boat. It's a mash of a Volvo AQ211a V8 block married to the original Merc V8 ancillaries (manifold, risers, ignition, leg, transom shield etc). Both blocks were GM blocks anyway ÔÇô (only difficulty I've found so far is that the exhaust risers have to come off to get a socket onto two of the plugs but that doesn't worry me to much).
Out last weekend, cruised at 30kts for 15 mins, came to leave and knocked her into astern. When I came to move the stick forward into ahead I got the revs but continued to move astern (just faster). She appeared to be stuck in astern. I killed the engine and had a look. All seemed ok so started her up and this time I couldn't select any gears.
A few weeks previous to the trip my marine mechanic had re-adjusted the gear linkages after removing the leg to service it. We had been out once since with no problems although that trip was only short.
My mechanic seems to think (which I find odd) that the marriage of the AQ211a might not be working. I have spoken to a Merc trained mechanic who has said that the Alpha 1 leg can handle up to 300hp and is widely accepted as one of the most reliable legs ever made. My leg is geared correctly for the higher output of the AQ211A (as confirmed by my own mechanic previously). The linkages for the leg are still Merc linkages that are bolted to the exhaust riser (as it's also a Merc riser). So in terms of linkages sending messages to the leg, it's all Merc as it was previously.
I can't understand why my mechanic thinks it could be a problem with the marriage of a VP to a Merc leg when all the controls for the gears are original Merc and all the block does is provide the suck, squeeze, bang, blow when required. Do you think he might be covering his behind or might he have something?
NOTE: (Temps are always spot on, ignition is Merc Thunderbolt and always starts on the button.)
Anyone got any ideas or suggestions?
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