Bearing shells and hollow dippers needed

[Jens]

The machine shop just called to tell me that my 20/2 crankshaft magnafluxed ok and that I will need 10 thou under sized bearing shells when they are done.
I would like to use solid top shells.
Can anyone supply two sets of 10 thou over/under (I keep forgetting if it is oversized or undersized but the point is the journals will be 10 thou smaller in diameter) top/bottom shells and two hollow dippers ?
I would ideally like to get all the bits from one place so I don't get stuck with no hollow dippers and solid top shells.
I gather there are two dipper sizes - when measuring the originals do you measure overall length including threaded portion ? Are there different sized shells other than the over/under sizing - should I measure any dimensions ?

Jens

[playdiesel]

I was brought up calling them undersize but more than once have been "corrected" The over crowd says they are over because the shells are thicker, makes a certain amount of sense. The under crowd (me) says under because the crank is ground under standard. None the less you tell any supplioer you want 010 bearings you will get the right thing no matter what you or they  suffix the 010 with.

[mobile_bob]

interesting question, from memory

we always refer to a crank as being for instance 10 undersize
and the brgs needed to remount it as being 10 oversize

in any case, there is only one way to go, whatever you call it

even if you make the crank 10 over by building it up with weld, there are no brg manufactures that
provide the needed undersized (larger bore) brgs,, at least typically

the exception is probably the hotrod world, where anything can be done and bought given enough money to throw at it.

bob g

[Ronmar]

And if they made the crank journal .010 larger by weldbuild, they would just turn/grind it back to stock I think...

[Carlb]

look at it on the bright side.  You really don't need those parts till the very end of assembly except to clearance the piston to head.

[Ian]

Jens - Lister used channelled upper bearing shells for decades without them feeling the need to make changes  - so if you cannot find the plain oversized  shells and hollow dippers just at the moment, there is nothing stopping you using the original thing whilst you carry on sourcing the items you want.

As has already been mentioned, original Lister parts (expensive) are still available and Indian pattern parts also available a little more cheaply.

I believe you have a mill or lathe – so making a non hollow dipper into a hollow one would not be a problem for you. Making one from scratch would not be a problem for you I suspect.

Don't worry about running a standard design upper bearing shell with a hollow dipper – I can confirm that I have been doing this for about 2000 hours now (and the upper bearing shell is an Indian 10 thou oversized part with oil channels) and a home made hollow dipper.

You have nothing to fear.....

Hope this helps.

Regards,
Ian

[JohnF]

Jens;

I think I have some +10 plain bearings but do not have any hollow dippers in stock right now.  I do know that the standard dipper can be drilled out to do the job.

[mobile_bob]

John is your only source for plain upper shells, they were special order, and were done on a special run
off the production line in india.

not likely you will find anyone else having gone to the effort to get them done, and good luck trying to find
an indian supplier.

bob g

[billswan]

jens

How about out of the UK.   http://www.stationaryengineparts.com/-Cylinder-piston-rings-and-con-rod/?page=2

Billswan

[AdeV]

Wowsers, those are pretty dear. I wonder if they are real Lister shells in which case they might be worth the price.

They'll be Indian, unless stated otherwise (SEP is pretty proud of his genuine Lister bits when he gets them).

It would be worth keepin an occasional eye on ebay.co.uk as well, sometimes Lister bearings go on there.

[billswan]

Jens

Have you emailed or called Phil at Central Maine Diesel he has parts but not sure about the under size?

http://www.generatorsales.com/order/lister-parts.asp

Give him a try he might have some he has some parts not listed, I got a intake elbow from him , it was not listed.

Billswan

[luv2weld]

Don't hold your breath waiting for them to answer emails. I have tried several
different times with emails. For some reason they never answer them. Better to
call on the phone if you want answer.

Ralph

[cgwymp]

They could be genuine Lister and Indian -- I got a new piston for my 8/1 that was in Lister packaging but made in India.  The quality seemed quite good.  The real test of course will be when I finally run it....

[billswan]

Don't hold your breath waiting for them to answer emails. I have tried several
different times with emails. For some reason they never answer them. Better to
call on the phone if you want answer.

Ralph

Jens

ralph makes a point that I have also experienced. I have also sent emails but got no response, it is a big place and lister parts are only a side line now that they cannot sell engines thanks to the government man.

If you can get phil on the phone that is probably the way to go.

Billswan

[veggie]

It's looking like spray welding and machining to standard size is the way to go.
No doubt it adds a lot of expense though.   Bummer !

veggie