srqjohnson
Member
Hello everyone. I have lurked for years and found this place to be a gold mine of knowledge. Thanks to all.
Ihave a matched pair of 99 GTX Limiteds with of course the 951 carb engines. One I have owned for many years. The other I recently bought and am re-installing the oil injection.
I had to purchase the oil pump and drive shaft on ebay. I looked up the part numbers and was sure I had all my ducks in a row. New hose, filter, good used pump, etc. Installing the black plastic pump coupler/drive and putting the mag cover back on it appears the drive for the oil pump is too long. I am a pretty good mechanic and used a mirror and checked seventeen ways from he** and it is just plain too long. Part number 420837390 should fit but it actually protrudes out of the mag cover about a sixteenth of an inch. The oil pump has a small shoulder which protrudes INTO the hole in the mag cover, so it is not even close. I am sure it is a 947 engine, but I know nothing of it's history as I just bought this ski. For all practical purposes this engine externally looks identical to it's trailermate. There are, incidentally three drive shafts listed for a 951 engine the only differences in part numbers being the last digit. The one I have ends in 390. There is also a 392 and a 395. They all physically appear identical except for maybe length. Before I go and buy one of each I would like to actually solve this some way other than trial and error. Thank You in Advance all you sharpies out there.
Ihave a matched pair of 99 GTX Limiteds with of course the 951 carb engines. One I have owned for many years. The other I recently bought and am re-installing the oil injection.
I had to purchase the oil pump and drive shaft on ebay. I looked up the part numbers and was sure I had all my ducks in a row. New hose, filter, good used pump, etc. Installing the black plastic pump coupler/drive and putting the mag cover back on it appears the drive for the oil pump is too long. I am a pretty good mechanic and used a mirror and checked seventeen ways from he** and it is just plain too long. Part number 420837390 should fit but it actually protrudes out of the mag cover about a sixteenth of an inch. The oil pump has a small shoulder which protrudes INTO the hole in the mag cover, so it is not even close. I am sure it is a 947 engine, but I know nothing of it's history as I just bought this ski. For all practical purposes this engine externally looks identical to it's trailermate. There are, incidentally three drive shafts listed for a 951 engine the only differences in part numbers being the last digit. The one I have ends in 390. There is also a 392 and a 395. They all physically appear identical except for maybe length. Before I go and buy one of each I would like to actually solve this some way other than trial and error. Thank You in Advance all you sharpies out there.
