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Luke watkins

Lister SR1 identification and parts help

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Hi all,

This is my first post so firstly hello, secondly apologies for the long post and hoping I am in the right place.

I am trying to identify what I'm told is a Lister SR1. The only details I can find are a number: 10760SR115, a hp rating of 6.5 and rpm 2000.

This engine was bought by my father to fit in his 23ft narrowboat which I have been refitting for him, the wood work and all inside is complete so we are now turning back towards the engine to get him going.

He had someone attempt to fit this some time back and at best the job was questionable. (it was a freebie done by one of his neighbours)

Having had a quick look myself it looked like he struggled to get the engine in line because it sat very low on the bearers.

I have had a local marine specialist have a look and got some advice.

The specialist has said the install isn't great but could work with some tinkering. Firstly he suggested getting a 2:1 final reduction gearbox on it as it is running 1:1 at the moment I believe. He suggested a python or aqua drive to get the final alignment correct although this could possibly be corrected if the reduction gearbox lifts the height enough to get some clearance. He also said the prop might be a bit big to swing on the 1:1 as it's a 14" three blade. Oh and lastly that the rotation of this engine may be an issue as they don't like running in reverse for long periods (putting gearbox in reverse I mean/not running engine backwards) although we are not sure which rotation it actually is!

My aim is to identify the engine and gearbox, then price up and get some measurements from a final drive to see if this is viable.

Can anybody help at all with either advice for fitment, parts identity or anything else that might be relevant. Thanks

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@RLWP has all the information and probably all the parts you need. I expect we will need at least the propeller diameter to guess if the boat needs a 2:1 reduction or the direct 1:1 drive you have. Without the prop size you may find that you fit the engine and then need to buy another propeller.

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Hi, thanks for the quick reply. 

 

The prop is 14 inch, three blade, r/h bronze. Of the top of my head but will check survey report now. 

Just checked and that was correct. Also it is on a 1.25 inch diameter stainless steel drive shaft. 

 

Just incase that changes anything. 

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15 minutes ago, Luke watkins said:

Hi, thanks for the quick reply. 

 

The prop is 14 inch, three blade, r/h bronze. Of the top of my head but will check survey report now. 

Just checked and that was correct. Also it is on a 1.25 inch diameter stainless steel drive shaft. 

 

Just incase that changes anything. 

The r/h bit may be important because I think the 2:1 reduction box reverses the shaft direction of rotation but I can't remember too much about it.  A number of other members can quote chapter and verse. If the shaft is a lot lower than the gearbox coupling the its likely to have had a reduction box fitted unless the original engine was not a Lister.

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Ah okay, worth knowing. I think there may be a 50/50 chance of this working then! Failing that it might be a prop change. 

 

The original engine was a kingfisher but was in a very poor condition unfortunately. 

 

Thanks again

 

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55 minutes ago, Luke watkins said:

Ah okay, worth knowing. I think there may be a 50/50 chance of this working then! Failing that it might be a prop change. 

 

The original engine was a kingfisher but was in a very poor condition unfortunately. 

 

Thanks again

 

 

Which Kingfisher? KD2, KD3, or something different. I ask because someone here may know what reduction ratio was typical and if it had a dropped output flange.

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