yanmar rebuild?

[DrewR]

I got most of my Yanmar rebuild parts online from Hoye Tractor.  

Any parts cross reference?  I looked and looked and couldn't find any.  Whats a 3GM30F in tractor speak?

 

[DrewR]

I got a rebuilt longblock 3gm30 for my J35 from some outfit in MI about 9 years ago.. 3200 shipped to MD. local yard put it in for 750-800 bucks.. it's still going strong.. thru a rod in the old one down near Solomons and it got me home on 2.. had to keep dumping oil in it though.. went thru a case.

I have a tired original 3GM30F also in a J/35. Do you remember who you got it from?  This seems like a simpler way to go than the newer Yanmars, but a Beta is looking pretty good at the moment.

 

[Bump-n-Grind]

this is old email I found... that's all I have for the engine source...

Date: Mon, 26 Jul 2010 12:15:08 -0700
From: [email protected]
Subject: Re: Yanmar engine
To:
 

I can offer a Yanmar Model : 3GM30F  Year of Manufacture - 2/21/2002  
Complies with the European  Pollution Requirements.
This Engine is Re-Manufactured with one year Warranty .
Cost :  $ 3,950.- plus core   - core charge  is $ 1,000.-
As for the New Model Engine  : 3YM30   I am restricted  to my service area.
 
Let me know !
 
Thanks AL/ Schooner Bay Imported Motors   715.779-3266


 

 

[SomethingElse]

Any parts cross reference?  I looked and looked and couldn't find any.  Whats a 3GM30F in tractor speak?

The Hoye Tractor site used to have you put in the Yanmar part number and it would give their part.   I just looked and now there is a marine engine page then choose your engine.  Since it's Chinese products the prices maybe affected by the tariffs going on if you are in the USA. 

 

[Alcatraz5768]

yanmar gm engine rebuilding is no drama. there are heaps out there and the parts are available albiet some might be special order from japan. 

 

[jimbojones]

I had an ancient SB12 rebuilt not long ago so I can't imagine that a gm series can not be rebuilt. That said I would not do a complete rebuild a small diesel ever again. Its throwing money at something which is only going to get harder to find parts for and will never be as reliable as a new engine. Small diesels are still expensive but not much more than it cots to do a full rebuild.  For the cost of rebuilding my sb12 I could have bought a new engine and DIY'd the install.... I definitely regret that. 

 

[1215]

I'd say that's bullshit. When you're dealing with the stressed rotating components (pistons, con rods, cranshafts???) you can't just pick up something that looks right and "grind them to fit". Things like these have very fine tolerances and have to deal with increase in dimensions as temperature increases. 

I have nothing against going to a bearing shop and buying generic lip seals and SKF bearings for my Yanmar raw water pump - but what you are suggesting is nuts.

I don't think you understand what I meant. 

For example, there is this company called BMW. Most people know about them because of their automobiles. Do you know that BMW has a marine division too? The BMW M20 block series was available in BMW cars, boats and Lincoln (yes, Ford, Lincoln, Mercury) cars?

Companies like Bosch, Siemens, Valeo, ZF, Getrag, Lemforder, etc....  All they do is make parts --or "stuff". VDO makes great gauges --and you can find VDO gauges on all kinds of cars. Think about Brembo brakes. How many current car manufacturers tout "brembo brakes" in their advertisements. 

Some company makes rings and Yanmar buys them --but so does John Deer or Kohler or BMW. I could also be totally wrong. Yanmar could do everything in-house... But I highly doubt it. Half the engine parts in my car can also be found in a Range Rover, Lexus, Nissan, Some Fords and Subaru. (maybe more that I don't know of) 

 

[12 metre]

I don't think you understand what I meant. 

For example, there is this company called BMW. Most people know about them because of their automobiles. Do you know that BMW has a marine division too? The BMW M20 block series was available in BMW cars, boats and Lincoln (yes, Ford, Lincoln, Mercury) cars?

Companies like Bosch, Siemens, Valeo, ZF, Getrag, Lemforder, etc....  All they do is make parts --or "stuff". VDO makes great gauges --and you can find VDO gauges on all kinds of cars. Think about Brembo brakes. How many current car manufacturers tout "brembo brakes" in their advertisements. 

Some company makes rings and Yanmar buys them --but so does John Deer or Kohler or BMW. I could also be totally wrong. Yanmar could do everything in-house... But I highly doubt it. Half the engine parts in my car can also be found in a Range Rover, Lexus, Nissan, Some Fords and Subaru. (maybe more that I don't know of) 

While what you're saying is true, I think the problem with old Yanmars is what DrewR said.   You won't find a cross referenced parts list anywhere.  I posted a thread on this a year or so ago and no one had any idea.  I had hoped maybe an old timey diesel mechanic would have made up a list with cross referenced Yanmar industrial/agricultural part numbers, but no such luck.

Hoye looks like they some parts listed for the "newer" GM series (i.e. 3GM30) but not the 3GM.  I don't know if most of the parts are interchangeable or not.  if you knew which agricultural engine your particular GM is based on you might have more luck because they have a long list of those engines.

 

[kcolborne]

I had my 3GM30F rebuilt 2 years ago by a local mechanic/machine shop outside of Sarnia, Ontario.
No issue with parts availability at that time.  Very good experience all around.
 

I pulled the motor, delivered it to the mechanic, picked up the completed engine and reinstalled myself.
Waited longer for the machine shop to clean up the bores than searching or waiting for parts.

 

 

[dagnabit]

Also had 3gm30f rebuilt within last 3yrs (CT). It was fairly extensive. Don't recall any issues with parts. Had carefully considered rebuild vs repower and it mainly came down to all the downstream effects of moving to a newer model - including having to redesign the engine cabinet and steps that are integrated. The rebuild is fine for my needs. It runs great and should be good for many years.

 

[Diarmuid]

this is old email I found... that's all I have for the engine source...

Date: Mon, 26 Jul 2010 12:15:08 -0700
From: [email protected]
Subject: Re: Yanmar engine
To:
 

I can offer a Yanmar Model : 3GM30F  Year of Manufacture - 2/21/2002  
Complies with the European  Pollution Requirements.
This Engine is Re-Manufactured with one year Warranty .
Cost :  $ 3,950.- plus core   - core charge  is $ 1,000.-
As for the New Model Engine  : 3YM30   I am restricted  to my service area.
 
Let me know !
 
Thanks AL/ Schooner Bay Imported Motors   715.779-3266


 

That's Alf Holzer in Bayfield, WI.  Rebuilding marine diesels is what he does, all the time. Most of the engines on this page are his remans.

Here's a 2GM20F rebuilt for $4450 + core. Might reman yours for less. Presumably he has his supply chains pretty well sorted. Also does Volvos, Universals, etc.

 

[Bump-n-Grind]

That's Alf Holzer in Bayfield, WI.  Rebuilding marine diesels is what he does, all the time. Most of the engines on this page are his remans.

Here's a 2GM20F rebuilt for $4450 + core. Might reman yours for less. Presumably he has his supply chains pretty well sorted. Also does Volvos, Universals, etc.

and I will say he was a pleasure to do business with... I got everything I paid for in a timely manner. He was happy to contact my mechanics re: shipping of my nw engine and return of my core..

 

[Diarmuid]

and I will say he was a pleasure to do business with... I got everything I paid for in a timely manner. He was happy to contact my mechanics re: shipping of my nw engine and return of my core..

Good to know!  We have a doubtful MD6a we're not sure what to do with, & a Holzer reman (Yanmar) is a serious option. My instinct at this point is: if we're gonna put money into engine work, put it into something other than a raw water Penta with a cracked block.

 

[SloopJonB]

Good thinking.

Re: some comments about rebuilt engines being something less than new - a properly rebuilt engine is better than new. If the mechanic is good then it will be built to closer tolerances than an assembly line engine (blueprinting).

A fully rebuilt engine only reuses the basic castings, crank, rods etc. Assuming you also get the injectors and pumps done then there is no reason to regard it as anything less than a brand new engine.

You're also less likely to have paint sprayed over the hoses and everything else.

 

[kinardly]

Years ago I rebuilt a raw water cooled YSM12 with new sleeve, bearings, rings and I ordered them all through Hawthorne Power Systems in San Diego. It took them forever but eventually got the  parts. <<www.hawthornecat.com>>. Don't know if they still do that kind of thing but you might give them a shout. 

BTW, that engine lasted another five years of light duty in SD and I then sold the boat to a guy who took it to SF and then did a couple of SH Transpacs, all on the same rebuild.