| Stuart Turner P55 Engine - Which Oil?
Post Number: 1
|Posted on Sunday, January 30, 2011 - 05:55 am: ||
I have recently become the proud owner of a putter fitted with a P55 engine which as far as I can tell dates to the late 60's, early 70's. The original handbook is dated '68. The motor runs smoothly at idle and low revs with little smoke but starts to blow quite a bit at higher speeds. In other owners experience is this the norm? What would be the best oil to use in the fuel mix. Any suggestions much appreciated as I've had no previous experience with these engines }
Post Number: 98
|Posted on Sunday, January 30, 2011 - 06:17 am: ||
Ross, They originaly run a straight 30 grade oil but that is now hard to find. I and a few others have been using Valvoline 2 stroke semi synthetic. The mix ratio is 50:1 and ONLY use Premium grade Unleaded fuel. We do not use E10 as it is hydroscopic and also separates from the oil.
There are probably a couple of others on here that are more ofay with the P55.
There are drain plugs at the base of the Crankcase. Just open them up about 2 turns and drain out the excess oil and sooty rubbish and that should fix your smoking problem as will the correct fuel mix. Where are you located?
Malcolm Russell Ward
Post Number: 43
|Posted on Sunday, January 30, 2011 - 02:41 pm: ||
Yep. Dave is right on the button, Ross. I've have a drum of straight 30 grade which, at 50:1, will see me out I think. Wouldn't worry about the smoke (were you using the right mix?) unless the neighbores mention it! Have a look at all the posts on Stuarts: There are plenty of them out there! All the best.
Post Number: 38
|Posted on Sunday, January 30, 2011 - 05:20 pm: ||
If your engine is fitted with the brass solex carby, make sure it is level when afloat, otherwise it tends to flood and that can lead to smoke. When I first started with this engine, the carby was set up level for a bench test and not level when afloat. Consequently I left a smoke screen. Altering the angle of the carby soon fixed that.