Swaping Lister SR2 to a BMC 1800

[RLWP]

Where is the pressure relief valve, i have checked and de greased all the oil pipes as i thought that was the problem.

 

In the sump

 

Richard

[pete.i]

 

The blades are angled backwards so that weed and rubbish tend to slip off the leading edge of the prop That is the theory, and it does work to some degree in forward. But thrust in reverse gear is usually poor. They were more useful many years ago when a lot of canals were chocked with heavy weed growth.

Ah right, like the Selby Canal is now then LOL. Okay thank you for that.

 

Pete

[nebulae]

Changed an SR2 for an Isuzu .I was told the prop was a Lister one,17" left hand. As the Isuzu has a PRM 150 which can run in either direction,I left the old prop on .Also,I was told that Lister props have an unusual taper,so shaft would have to be changed if changing the prop (.I believe that the PRM has a facility to lock in forward if the hydraulics fail,this only works with a right hand prop) I was advised not to try to fit a keel cooling tank to an old boat,so I went for direct cooling with an intercooler.This has all worked O.K. for over 2,000 hours running .Reason I went for an Isuzu was the restricted length available in my engine space.Hope these comments are helpfull.

[chris63]

Changed an SR2 for an Isuzu .I was told the prop was a Lister one,17" left hand. As the Isuzu has a PRM 150 which can run in either direction,I left the old prop on .Also,I was told that Lister props have an unusual taper,so shaft would have to be changed if changing the prop (.I believe that the PRM has a facility to lock in forward if the hydraulics fail,this only works with a right hand prop) I was advised not to try to fit a keel cooling tank to an old boat,so I went for direct cooling with an intercooler.This has all worked O.K. for over 2,000 hours running .Reason I went for an Isuzu was the restricted length available in my engine space.Hope these comments are helpfull.

Yes very much so, thanks, when I get the boat out I was hoping to replace where the skin tanks will be fitted with new steel and was going to put the skin tank in then, that's the plan anyway!!

[chris63]

Well right or wrong have won a 1800 BMC with a hydraulic PRM gearbox and all the electrics that go with it, so my next job is to get my lister out and that looks a heavy lump!!

[robmilton]

Believe it or not the lister engine and the Bmc engine and box are not much different weight wise, well done on taking the plunge into b.m.c world, it worked well for me.

[chris63]

When i get the. Lister out of the boat i will be trying to sort the oil pressure out just for curiosity if nothing else! But trying to get around it in the boat is getting more and more awkward as i am struggling to get into the bottom of the boat.

[RLWP]

Will you be selling the Lister?

 

Richard

[chris63]

Yes i think so mate.

[Sabcat]

Not much use to you now as you've already bought a new engine but I had a similar dilemma a few years ago. I was running an SR2 in a 50ft boat and it wasn't up to much (mainly because it was propped wrong). When the boat was stretched I changed the SR2 for an ST3 with a PRM 160 and moved the engine forward 14inches (it's at the back of a trad) for better access all around the engine. I had a small skin tank fitted to cool the gearbox oil and boxed it in to solve (mostly) the noise issue.

 

I never had a cooling problem from boxing in but I anticipated one. The engine cooling fan exits from the side of the boat directly opposite the engine (15 inches from engine to outside). I used a flexible hose to extend the air intake to a MK1 Ford Escort air box (the old round trumpet type) which is attached to the roof under a mushroom so the air going is cool. From a fake boatmans cabin chimney I pull in air using a 12volt radiator fan (an after market mod for a Triumph Spitfire as it happens but any would do) which directs air via ducting to the front of the engine over the alternators. I was dubious about directing air here but it is as the diagram in the workshop manual for the engine.

 

The upshot of this is that along with a Crowther prop of the right size and pitch (19", can't remember the pitch) the boat handles perfectly well, isn't hugely noisy and doesn't overheat.

[RLWP]

Yes i think so mate.

 

Let me know when you are ready to sell

 

Richard

[chris63]

Let me know when you are ready to sell Richard

Will do, probably in about a month.

[chris63]

Well i'll fill you in with my progress so far, got my BMC 1800 Engine, hydraulic PRM gearbox and all electric gubbins yesterday, got it all for £580 inc fuel to fetch it, and its only done 1500 hours from when it went into a new boat, it was on the Monmouthshire and Brecon canal so not done much as its not connected to the rest of the network. Just took a guy out to the boat to have a look, he is a welder now semi retired who use to make and repair narrow boats besides loads of other welding jobs, he is quite happy to do the welding for me at a great price, so two big headaches out of the way. So next job get my old engine out!!