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wd-45 engine help

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04-27-2004 06:00:59

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ok my dad has pulled the head of his wd-45. he wants to replace the rings or assemblies. I am pushing him to put 4-1/8" pistons and sleeves in.
we already have the pistons out and there is .030" to .060" lip in the sleeves so I am pushing to put in new. My question is do I want to put in the old rod bearings? Or do I want to go new standard ones? If I mic the crank what would be the standard spec? I need to figure out if I need to go standard or oversize.
keep in mind he will not be pulling the crank out of the engine. this is not how I want to do it so what are my options.
thanks Chad

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04-29-2004 19:15:44

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 Re: wd-45 engine help in reply to chad, 04-27-2004 06:00:59  
Take out the bearings and look on the back side they should be marked std, 010,020,or 030 that is the crank size. If the crankshaft is still round all you need is bearings.

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04-27-2004 19:15:04

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 Re: wd-45 engine help in reply to chad, 04-27-2004 06:00:59  
Yea, it is time for new sleeves... Might as well get the 4 1/8" set...tru-value has them, others too. Use Plenty Permatex on the lower sleeve area where the "O-Rings" go.. I am sure my WD-45 has shims in the rod/caps..for clearance setting.. Crankpins may not be exactly round, so don't try to set them too tight.. .002" would be good..no tighter.. If you see any cracks between the 1 &2 or 3 &4 cylinder webs at the bottom of the block, after you have it together--except for the head---carefully pour a pint of Non-hardening Permatex down to the bottom of the block...spread it all around every sleeve and web area...will prevent water leaks into the oilpan.. I run it in thru a funnel, and hose...

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04-27-2004 06:41:22

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 Re: Re: wd-45 engine help in reply to Jim Danforth, 04-27-2004 06:27:49  
that is basicly what we are going to do is do a in-frame rebuild that is why I need to know what the crank jurnal diameters need to be to size up rod bearings.
where did you get that $439.00 price?

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Dave Grubb

04-27-2004 06:12:03

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 Re: wd-45 engine help in reply to chad, 04-27-2004 06:00:59  
About all you can do in this case is to use a plastigage to check the bearings clearances. I don't have my service manual at hand to give you the rod journals diameter. Cam shaft bearings determine good oil pressure as much as any of the engine bearings as they receive the pressure oil first.

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