launching day, yanmar 8's & 17 yr old diesel !

[1107]

launching day, yanmar 8\'s & 17 yr old diesel !

My boat, a hawksbill 24, I think was built in 1988. It would seem that a second company purchased the moulds after the original makers stopped production, for whatever reason. It was purchased as a hull & deck only, as a retirement project for a gentleman who lived in the midlands. The vessel was never finished & has now come to myself, the third owner. The objective is, that this year it gets its bum wet for the first time, even if it is the local marina to myself, just on the river Trent.

It has been given some TLC & a few more man hours should see me somewhere near to the big day & with that I can then focus my attentions on cosmetics inside.

The boat has been fitted with a yanmar yse8 diesel, it has zero hrs use, apart from being started on one or two occasions, & I can only assume
it has 17 year old fuel.

I would like to know if it was/ is, a popular engine, if they were reliable etc & any hints/ tips for when I try to run it up for the first time. It could be that the engine oil is now defunct of any value also ?, does anyone know !.

If there is someone with knowledge of yse,8's, or even chucking old projects in the water all tips would be welcome, many thanks.

 

[Gunfleet]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

I had a boat with a YSE8. They are very robust and heavy - much heavier than a modern deisel. I would chuck both the oil and the fuel - they don't cost much. Does the engine turn over freely? One point to look out for is that the engine doesn't have an oil filter in the conventional sense... it has a sort of scourer operated by a little tee bar in the front of the engine. Of course you will be replacing the water pump impeller - the vanes on that will be knackered after 17 years! Good luck.

 

[Spyro]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

web page Here if you have any specific questions about Yanmars

 

[mainmarine]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

Definitly change the engine oil and also gearbox oil, I recently refitted the engine Sole 9HP into my boat after being standing for 15ys, after wiring it up I turned the key just to make sure the warning lights etc came on, and the starter turned, the engine fired up, no fuel connected, it must have been what was left in the fuel filter from the last start up. Best of luck, we must start a Midlands Sailing forum, another guy from Notts was looking into buying a sailing boat the other day on the forum.
Local forumites are having a Pub meet at Kimberley on the 20th April.
Malc
Mainmarine

 

[l'escargot]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

YSE 8s were produced from 74 to 76 so it is older than you think. Very robust - although primitive by modern standards - and still many in use. I have had a YSE and 2 YSBs (it's successor). Bit noisy with a distinctive "thump" but go on for ever.

Someone has given you the forum page I see, also look at the main site and there is a service manual here

 

[supermalc]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

I got my boat with a YSE12 last year, and have learnt a little about them. Just change the fuel, oil and gearbox oil. Engine and gearbox use the same oil.....mineral diesel oil, not synthetic. There is no oil filter, just a strainer on the front. This comes out easily, just undo the 3 6mm bolts and wash in solvent (diesel/petrol/thinners etc) The holes are assemetrical so you cannot fit it the wrong way round. I worried about this the first time I took it out, as there are 2 oil holes in the block, and only 1 in the strainer.

Very noisy, yet strong and robust. Several have told me the engine derives from a Coventry Climax twin made in the 30s.

I've a page of the info I've discovered http://www.angelfire.com/rnb/malcsworld/boat/YanmarYSengines.html

Please don't hesitate to contact me by email or phone if you think I can help.

I see you live in the midlands, so not too far away. You may even like to visit if you have time, and have a look at my boat.

 

[1107]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

Thanks for the info folks, good point JohnM about the impeller, I put some fresh water into the system & cranked it over by hand, the pump worked ok, but as you say, after that many years, i'm sure it will break up in no time.

I quoted the engine as a yse model, but what little info I have on it is for the ysb, perhaps I will find a serial no on it that will tell me for sure.

It's good to hear it's thought of as a good solid engine though, it gives me peace of mind, in an age full of hi tec throw away crud.

I do notice that the way the system is set up, it will suck sea water straight up into the pump ! , I would have thought that there should be a filter of some sorts ? Please advise.

Although I intend it to be used mainly around the south coast area, Torquay being my home town, I have lived in the midlands, Southwell, for many years, & I would like to be able to put it into the river on the odd weekend, the problem I see is having to remove the fuel tank & fit it in a cockpit locker to comply with these new sodding river regs, they also want you to fit vents for this & vents for that. I myself thinks that it might be a good idea if you have a sea boat, not to put holes all over it.

Anybody got to grips with that bit of bull.

 

[sailorman]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

the injectors have a "once use " polo mint type of seal. if u remove the injector for any reason make sure u have a replacement seal.
watch out for fuel leaks from the injector pump as this causes the stbd flexi mount to die.
the other point is make sure u have a vacuam break in the cooling system as the cylinder is horizontal its very easy to get water into the bore

 

[Spyro]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

Usually there is a plate on top of the gearbox that will say YSB or YSE there was a later model as well called a YSM. failing that the YSB has an electric full lift pump Behind the fuel filter on the port side, the YSE relies on a gravity fed system. I think the manual starting set up is different as well with the YSB having a sort of chain driven arrangement

 

[sailorman]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

YSE also had a chain "hand start" + starter motor also a very small/ low output alternator

 

[l'escargot]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

YSE and YSB look very similar and I have had 2 YSB's with gravity feed and no lift pump - probably because they were put into where the YSE was. Also to confuse matters there were 2 different types of YSB, the thermostat housing/by-pass arrangement being different. The YSM was significantly different and couldn't be confused for the other two, but still a horizontal single cylinder (which is what the "Y" denotes).

The E and B both had a chain starting arrangement, but positioned slightly differently on the engine. Because of my offset engine compartment, I could use the one on the YSE but there wasn't enough clearance on the port side for the YSB and I couldn't use the starting handle. They have the same footprint though and can be mounted on the same mounts.

The plate on the gearbox will tell the model (there is also a "G" suffix which denotes a different gear ratio). Many parts are the same on both engines and because of the substantial gear lever movement they are not really compatible with single lever controls.

 

[FlyingDutchman]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

I had a boat with an YSB 12 engine.
This had an electrical fuel pump mounted on the engine.
Forget about the hand starting unless you wish to injure yourself. Make sure the battery is good because when the engine is warm it has a lot of compression and is dificult to turn.
The boat was 25 years old and did not have a water strainer.
I bought one to install it but before I had time to do so the boat was destroyes as a neighbouring boat caught fire.

 

[corncob]

Re: launching day, yanmar 8\'s & 17 yr old diesel !

If you wan't help contact Cellar Marine 01326 280214 he specialises in YSE/YSB/YSM parts. As a lot of parts are now unobtainable?