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Discussion Forum
:

WD engine overhaul

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Roger Fletcher

05-01-2002 08:55:48




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My oldest son thought I have a little too much free time, so he helped me out a little. While pushing snow with my WD last winter he snapped a valve stem, which broke the #4 piston and sleeve. I know he's just the lucky guy who happened to be driving, but know he'll see this post & I want him to know that I know. Anyway the tractor's been using oil all along & is worn so I plan to go completely thru the engine while I'm at it. Any good tips are appreciated. I'd like to add a little more power while I've got it apart. Is there an after market camshaft that gives higher lift & duration available? Any other reasonable priced changes I could make to help out the power end? What's the best way of getting the sleeves out & replaced? Anything special to look out for, best place for parts, anything you wanna tell me I'll listen.

Thanks..........Roger

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joe from IOWA

05-03-2002 04:25:10




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 Re: WD engine overhaul in reply to Roger Fletcher, 05-01-2002 08:55:48  
I have had a 51WD for about 12 yrs now. When I got it was very "weak". I rebuilt it with a 1/8 in overbore engine kit...pistons and sleeves that are 4&1/8 in. instead of the stock 4in. The compression was also raised from 5.5 to 6.5 with the addition of this engine kit. I would guess that it now has every bit of 40HP. And a lot cheaper than the "buy wd45parts route". Also if you sub any 45 parts be very careful about the combination of WD and WD45 engine parts. It is possible to put together an AC engine that won't turn over because the valves are hitting the pistons. If you think you "need" that much more power trade your complete WD engine for a complete WD45 engine and rebuild that.

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Noly

05-01-2002 19:18:16




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 Re: WD engine overhaul in reply to Roger Fletcher, 05-01-2002 08:55:48  
Roger, if your block is good. You can put in a 45 crank and pistons. Dad did this years ago.



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Jim T

05-01-2002 19:08:09




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 Re: WD engine overhaul in reply to Roger Fletcher, 05-01-2002 08:55:48  
Roger, I did an engine for our WD many years ago. We used a "45" block and put in high compresson pistons from TSC. I had the sleeves and cam bushings put in at a machine shop and they did all the usual work; head and valve work, clean and check block,check rods, resurface flywheel, etc. I installed the crank and pistons myself and reasembeled the engine. When it was all done the WD had nearly 50 HP and pulled the 3 bottom plow MUCH better. Any other questions, just ask. Good luck. Jim T

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David T (MO)

05-01-2002 09:36:21




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 Re: WD engine overhaul in reply to Roger Fletcher, 05-01-2002 08:55:48  
I haven't done my WD45 engine yet so I'm no help there however if you're going to pull the engine (and I would), be sure to replace the front hydraulic reservoir seal. Its a known leaker on these WD style tractors.

Good luck!



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