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Old 15-06-2011, 18:14   #1
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Yanmar 4JH3-HTE rebored or liners ?

Hi everyone:

Has anybody done reboring on this engine before ?

I cant find oversize pistons and rings but the engine service manual says this engine is not overhauled with cylinder liners but reboring it for oversize pistons so I am confused

how can my dealer not have a parts number for oversize pistons and rings ?

any comments will be appreciated

Blueknight
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Old 15-06-2011, 18:55   #2
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Re: Yanmar 4JH3-HTE rebored or liners ?

Blue,

Give us some more info, if you can. There have been several threads about Yanmar, and their dealer/distributor network. If you will tell us where you are, there are folks that can recommend a good dealer for you. Some - and I'll say it again, SOME dealers appear to be less than honest.

We have pretty much the same engine. If I were in your shoes, I'd probably choose to repower with something other than Yanmar. That's how much I like Yanmar's "program". I like their products ok, but I absolutely HATE their life support system that is designed to extract the most $$ possible from the boating public.

If I were guessing, I'd GUESS that they make no money on the new engines they sell to the boat mfg - and look to make it up later. I have no real knowledge of this, though.
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Old 15-06-2011, 20:36   #3
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Re: Yanmar 4JH3-HTE rebored or liners ?

Thanks for comments Bill, I buy from Sun Power Diesel out of Dania, Florida. Nice guys, serious business. Problem is they canīt find oversize pistons nevertheless Yanmar service manual says you overhaul by reboring and going to oversize pistons only, no liners.
Any experience overhauling your engine ?
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Old 27-11-2015, 07:04   #4
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Re: Yanmar 4JH3-HTE rebored or liners ?

729690-22610 part number for oversize pistons for 4jh3e comes with all rings already installed price was 220 bucks each
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Old 27-11-2015, 17:53   #5
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Re: Yanmar 4JH3-HTE rebored or liners ?

Quote:
Originally Posted by thelog32 View Post
729690-22610 part number for oversize pistons for 4jh3e comes with all rings already installed price was 220 bucks each
holy thats expensive! $880 for 4 pistons! a whole set of perkings pistons and rings, 4 of them is only $300-$350!!
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