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Davidflyfish

Lister engine identification

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Hello, I have what I thought to be a LD1 that has been taken off a 1968 Frederick Parker cement mixer. The engine has no ident tag but has one that says it's got an oversize piston etc. I guessed the engine type by comparing pictures in spares books & adverts on EBay & Utube videos. I have now seen a LR1 engine that looks the same as mine on EBay.

Can anybody tell me how to spot the difference & will a LD1 workshop manuel be the same?

Thanks in anticipation,

David.

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We can probably give you chapter and verse on that on Friday. 

 

No manuals on the boat 

 

Richard 

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I think the only difference in the two engines is the power output.  The LD1 is 3.5hp  @ 1800rpm and the LR1 is 5.25hp @ 2500rpm.  Mechanically they have common parts.  RLWP will give you any detail differences.

Edited by Flyboy

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The LR is a lower powered SR

 

The LD is likely to be related to the SL

 

Richard 

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Yes,LDand LR are both 3x3.5 with many common parts...but not piston and rings.....gudgeon dia may be different......head tension ...50 ft/lbs.

Edited by john.k

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24 minutes ago, Davidflyfish said:

All useful info but how do I tell which engine I have when I buy parts etc, thx, David 

Post some pictures, We are good at working out Listers from images

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The parts book lists the LR as 1949 on,and the LD as 1952 on....so its reasonable to assume one superceded the other............therefore ,I suggest you will have a LD from a 1968 cement mixer........the book also suggests repair parts are mostly the same ,especially important ones such as VRS kit,and valves...which incidentally seem to be the same I&Ex.

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So LD1 or LR1? I've stripped the head etc to refurb & have attached some photo's; hopefully.

also I've taken the injector out but have I taken the sleeve out as well, or is this how it looks. One of the kids picked it up from the coffee table & unscrewed the black not etc off the end so I'm guessing that I'll now have to get it recallibrated as I know very little about injectors.

Looking forward to your replies,

David. image.jpeg.cdc95002bc5cb4b3979509d3709de022.jpegimage.jpeg.0f9e3d2112ef6129d6db9293234f3102.jpeg

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The part number on the piston indicate it's for a LD, I assume the /5 at the end indicates oversize dimension?

 

The image of the caliper reading appears to indicate the piston is 0.025" oversize.

Edited by OptedOut
dded info

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