Camshaft Replacement - Engine Rebuild

Anonymous-0 · Mar 6, 2011

I am rebuilding a Case VAC. I have the engine completely disassembled and trying to figure out how far to go. How do you determine when to replace the camshaft? I am planning on new sleeves, pistons, crankshaft ground, etc. Is it better to have the camshaft ground or buy a new one?

Paul from MI · Mar 6, 2011

Look the cam lobes and lifters over closely for wear. If you don't see any worn surface I would re-use it as is. You might also want to check the cam bearings closely, more likely to find wear there on most engines and it can affect oil pressure if worn badly. Just my opinion.

Gene Dotson · Mar 6, 2011

Duane;

You might contact these people in Lester Prairie, Minnesota. They can regrind your cam and lifters and even improve the grind.

Gene
Berry Cam Service

glennster · Mar 6, 2011

they sell a cam and lifter set on this site for 223.00, prolly a lot cheaper than getting a cam reground, then you'd need lifters anyway, or at least have your resurfaced. have the machine shop install cam bearings for you, and give them the new camshaft to fit the bearings. as long as your in there, may as well do it right and be done with it!!

Jon Hagen · Mar 6, 2011

If you do reuse the cam and lifters, make sure you heep the lifters on their original lobe when you reinstall.

Mixing up used lifters on a used cam will cause almost certain cam lobe failure.

mEl · Mar 6, 2011

(quoted from post at 17:08:41 03/06/11) they sell a cam and lifter set on this site for 223.00, prolly a lot cheaper than getting a cam reground, then you'd need lifters anyway, or at least have your resurfaced. have the machine shop install cam bearings for you, and give them the new camshaft to fit the bearings. as long as your in there, may as well do it right and be done with it!!

Glennster, the cost of a regrind is considerably less than what you quoted from this site but without lifters. I get cams done regularly for about $150.00 and any automotive machine shop can resurface the present lifters, I do them myself but not everyone has the facilities to do that. mEl

rustred · Mar 6, 2011

when checking the lifters look at the bottoms or even put a straight edge across the centre. if you see a space between the lifter and straight edge the lifters are toast.you want the centre of the lifter a bit higher than at the edge. thats what you look for. no problem to get the cam checked or reground. pretty well a must to replace the brgs.

buickanddeere · Mar 7, 2011

Good to see somebody being particular and thinking.
People will pay thousands to rebuild and engine then scrimp or never think about the main controller for the engine, the cam.
If all the valves do not open or close to the design height at the correct time. How do people think the engine is going to operate?
We have all seen engines that a rebuild didn't make them operate any better.
A person just can't pickup a cam or followers, eyeball them and claim the components in spec.

Anonymous-0 · Mar 7, 2011

I called the machine shop that I am going to have grind my crankshaft and they can grind the cam and reface the lifters for about $170. It is like everything else with these old tractors. It is just another couple hundred to do this or that and make it right. You end up couple of hundred dollaring yourself to spending $2,000 to get an engine completely rebuilt(including head) and that is doing most of the work yourself. Oh what the heck I like my toys.

INCase · Mar 7, 2011

If you go new make sure you have a good high zinc oil to go in there or you'll toast that new cam shaft. New oils had most/all of the zinc removed for environmental reasons.

Camshaft Replacement - Engine Rebuild

Anonymous-0

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Paul from MI

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Gene Dotson

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glennster

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Jon Hagen

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mEl

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rustred

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buickanddeere

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Anonymous-0

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INCase

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