Author Topic: Cross Hatch  (Read 7364 times)

wormshoe

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Cross Hatch
« on: June 02, 2008, 04:12:21 AM »
Hi !

My name is wormshoe and I am a newbie.

I have tried to read all manner of things both here and on the net about the Listeroids and one thing still puzzles me.  Of all the clylinder/sleeve pictures that I have seen (new engines), only one has been honed. Is this typical of the Listeroids ? I'm just a dummy, but I would have expected to see a cross-hatch pattern. Did your engines show a cross hatch pattern when you first looked at the cylinder wall ?

Does anyone know the intake/exhaust valve stem diameters for a 6/1 ?

Thanks.

M61hops

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Re: Cross Hatch
« Reply #1 on: June 02, 2008, 10:58:11 AM »
Welcome wormshoe!  Honing the cylinders is one thing the Indians seem to do right!  My 'roid cylinder was honed and left with a good crosshatch and all the photos that I've seen have shown a good crosshatch pattern.  Sorry I can't tell you the valve stem diameter at the moment.  Leland
I pray everyday giving thanks that I have one of the "fun" mental disorders!

snail

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Re: Cross Hatch
« Reply #2 on: June 03, 2008, 12:48:43 AM »
Wormshoe,
         The 4 liners I've seen all have a cross hatch but it's very light.After a few hundred hours a lot of it's gone. I've had my Dursley items re honed and the finish is much deeper.Will it make much difference to a 'roid? Dunno :)

Cheers,

Brian

wormshoe

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Re: Cross Hatch
« Reply #3 on: June 03, 2008, 05:01:58 AM »
I was always told that a tool bit boring a cylinder would fracture the metal immediately under the surface being cut.....how much would depend on the tool metal being used, the metal being cut, how sharp the bit was and how much of a cut was being taken. So, the honing would remove the "loose" metal and as an added bonus, would put a cross-hatch on the wall giving it an interrupted surface for good oil control.

I've never owned or run a Lister, but I remember hearing them as a kid generating power for out-of-the-way cabins in snow country.  I always liked the sound of that single cylinder just huffing along making beautiful music.  Hell, they still sound beautiful !

I think when our youngest grand daughter leaves the nest, that my wife and I will be leaving the steaming heat of Florida and relocating to Idaho/Montana or some place similar. By then, I will be dangerous because I will have read all of your posts (and remembered at best, only half of what has been discussed !!!! ) and will start seriously shopping around for a 6/1. In the meantime, you guys will keep my dream alive for which I thank each and every one of you.

I would still be interested to know the valve stem sizes of the In/Ex valves of a 6/1.  If any one knows, I would appreciate a heads up. ( I owned a Sioux 645L valve grinder for years and buying a 6/1 sometime in the future would be just the push I need to acquire a used machine to play with.....yes, I'm still a kid.)

I appreciate your insights, your humor and your pictures.   Because I don't really have any experience with these engines, I will spend most of my time just reading and Looking at what you guys have to say.  Thank you in advance.

Have a nice day.   wormshoe


wrightkiller

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Re: Cross Hatch
« Reply #4 on: June 03, 2008, 12:54:24 PM »
Wormshoe : Don't take to long the prices keep going up....and you could be having fun now and later.... ;D ;D ;D

xyzer

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Re: Cross Hatch
« Reply #5 on: June 03, 2008, 02:06:27 PM »
I would still be interested to know the valve stem sizes of the In/Ex valves of a 6/1.  If any one knows, I would appreciate a heads up. ( I owned a Sioux 645L valve grinder for years and buying a 6/1 sometime in the future would be just the push I need to acquire a used machine to play with.....yes, I'm still a kid.)

Have a nice day.   wormshoe

Worm,
I have one at home I can measure for you when I wander by it. I do know they are a standard fractional size.
Dave
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MacGyver

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Re: Cross Hatch
« Reply #6 on: June 03, 2008, 05:21:00 PM »
I would still be interested to know the valve stem sizes of the In/Ex valves of a 6/1.  If any one knows, I would appreciate a heads up.

   0.434"
Steve

JKson (PS) 6/1 'roid & ST 7.5

wormshoe

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Re: Cross Hatch
« Reply #7 on: June 03, 2008, 11:21:43 PM »
Thank you sir. 

I never gound a valve on my Sioux that was larger than 3/8"+.002".  I will have to check to see what the standard maximum valve stem size is for the 645 series.  If I'm going to use this as an excuse to my wife to buy another valve grinder, I owe it to myself to make sure that it will handle the 6/1.  :D

You guys are great !  Thanks.

Wormshoe wishes all of you a fine evening....

blacksea7

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Re: Cross Hatch
« Reply #8 on: June 14, 2008, 10:45:03 PM »
Hi all,
If you have a true Lister, the cross hatch will be 45 degrees. If the Lister is an air cool, the cross hatch is somewhat rougher that it would be for a liquid. If it's a liquid cool, the cross hatch will be rather smooth. The reason we did this was to augment the break in of the engine as every Lister was good for 100% power within the first 25 hours of operation and good for 110% rated power for one hour out of every 12 hours of operation. All Listers for variable loads such as generators ran 110% fuel delivery whereas engines running water pumps, etc. had the fuel rack stopped at 100% For anyone who cares, horsepower output was BS 649 standard in which all engines were capable of producing 10% in excess of rated horsepower... the rating predated SAE, DIN, etc. and to this day I still prefer it. The worst thing you can do for any "oid" engine is baby it... put it to work so all mechanical parts burnish and wear together properly... the rings will thank you for it too.......

Bill