| Author |
Message |
    
kev
Visitor
| | Posted on Tuesday, November 24, 2009 - 03:08 pm: | 
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Hi guys have just taken proud owner ship of a p5 dynastart thats ment to been recond 2 years ago which looks to be right as the paint looks pretty good and has 100psi of compression.
I have just a few things i am unsure about as i am more at home with 2 stroke outboards
1 Is the dipstick on the side of the engine for the gearbox?
2. what oil does the gearbox need
3. Is the crank drain near the engine mount by the fly wheel
I have tryed to start the engine but only got it going once just about most i can get it to do now is fire but not run i think i have a carb/fuel problem or is there a techneique to starting the p5
She is powering my 18ft grp fishing boat sim to a plymouth pilot will this push it along ok on the sea? at what sort of speed?
Ps have cuaght the stuart turner bug!!! |
Malcolm Russell Ward
Member
Username: russell
Post Number: 27
Registered: 08-2003
| | Posted on Friday, November 27, 2009 - 08:01 pm: |
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Gr8 that you too have the Stuart bug. You will have to work at the relationship though! That engine should be alright for the boat. We had one in an H28 yacht. To answer your questions: (are all the other guys offline?).
1, Yep that is the dipstick for the reverse box.
2. Use straight 30 sae. Takes about a pint. Don't overfill -the mag can overheat because the box does.
3. Yep the drain is on one of the engine mounts -port side I think.
To get the best, you need to ensure that there is spark when you need it and fuel. Remember to use 20cc of 30 sae to one litre of fuel. You can use two stroke oil but people seem to shy away from it.The spark has to come at the right time so check and recheck the timing and see that the mag coupling is not slipping. Replace the sparking plug and keep the spark gap .018 -.020". My 1951 (I think) P5 will usually start by flipping the flywheel hot or cold unless people are watching. It has the original cast iron piston. If the spark is even a little out, there is nobody home. If you have an impulse mag, they are a different timing technique. Pity you have Dynastart, you are missing out on so much. That technique of holding your tongue in the right place and giving a smart upward flick on the crank. So cooool.... |
terence david harris
New member
Username: t_d_harris
Post Number: 1
Registered: 12-2009
| | Posted on Thursday, December 10, 2009 - 05:12 am: |
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kev, also make sure carb clean,,jet etc,,make sure throtle fully opened befor replacing or inner stem can be bent.flood carb befor trying to start.happy starting.terry cornwall |
kev
Visitor
| | Posted on Saturday, December 12, 2009 - 04:21 pm: |
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I have had the engine runing the other week and now think its a p6, what oil do i use in the gear box will the normal quiksilver stuff do like?
Ta |
Scott Simon
Visitor
| | Posted on Friday, May 22, 2015 - 01:44 pm: |
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Help
I have just bought a P5M. It was running so I have been told. I took it apart honed the cylinder and have put it back together. The problem is that I don't have a scooby doo how to make sure that it is sparking at the correct time. I do get a cough spurt and a bang now and then but it fails to start. I am running 50/1 and seem to be getting fuel into the cylinder. the spark is good and strong.
This is a lovely little engine which fit into an equally lovely (well it will be) little clinker 14 footer.
would anyone be so kind as to tell me how to set the timing. Serial number 11A273 |
terry harris
Visitor
| | Posted on Saturday, May 23, 2015 - 05:54 am: |
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hi scott,ive had several stuart turners,you could have a carb problem,;;; there is a place down in cornwall that used to work on st they could help you,they are now yanmar agents,if you want could get there address,???? |
Malcolm Russell Ward
Senior Member
Username: russell
Post Number: 74
Registered: 08-2003
| | Posted on Saturday, May 23, 2015 - 03:53 pm: |
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Scott, what sort of mag have you got? Is it an impulse mag -ie does it give a clank when you wind the engine over slowly? That sort is designed to flick past the point where the spark occurs and give a jucier spark.
They time differently from a conventional mag. |
Malcolm Russell Ward
Senior Member
Username: russell
Post Number: 75
Registered: 08-2003
| | Posted on Saturday, May 23, 2015 - 04:41 pm: |
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Scott, the P5 numbers were 11A001 - 11A893 they ran from May '63 -Feb 68. For a non impulse mag here is the routine:
Find TDC. It should be marked on the flywheel but if it isn't, mark it properly. Take plug out and put a rod down. Turn the engine until it is near TDC and mark the rod level with the top of the sparking plug hole; also put a mark on the flywheel. Turn the engine over TDC untll the mark on your rod is again level with the top of the plug hole. Mark the flywheel. Then mark a point on the flywheel halfway between your two marks. That is your accurate Top Dead Centre. It is worth doing this even if you have an old mark on the flywheel because it may not be accurate -we had an engine like that which flummoxed us.
Now make a mark about two inches before TDC -there should be a manufacturer's mark "M" there. This is the sparking point.
Time the conventional mag so that the points are just breaking. Us old bikers used to use a piece of cigarette paper to tell when they were opening. Those papers were about two thou -a useful gauge. |
Dana Hayman
Member
Username: dana
Post Number: 20
Registered: 05-2012
| | Posted on Friday, October 09, 2015 - 04:15 pm: |
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Hello,
I'm still learning about my P5, I have been looking at pictures of engines, trying to find one with a drip tray under the carburetor. Did this engine come with this option ? all the pictures are without the tray. |
