Comments on: Yanmar 2QM20 Diesel Maintenance http://tampa-bay-sailing-blog.com/archives/160 Sailing The Tampa Bay Area and Beyond Sat, 21 Jan 2012 10:41:01 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Kevin http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1536 Kevin Wed, 30 Nov 2011 03:08:01 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1536 2qm20 fans - the key to success is maintenance. I've made several key mistakes by trying to spend the least amount of money. My mixing elbow started to leak but the drip was in the engine area and the excess would just run into the bilge, so I thought no big deal. Bad idea. I day/night sail a couple of times a week and only run the motor about 10 minutes to get out of the harbor and about 10 minutes to get back so not a lot of water kicking out of the mixing elbow. What I didn't think about was all that excess salt moisture in the engine room. After several months having all that moist salty air in my engine room started to take its toll on the engine room. I finally patched (yes patched) the leak by getting a radiator hose that would fit over mixing elbow and a couple of clamps later - no leak. I went along like that for the next couple of years until the area around the clamp started getting soft and chunks of metal started falling off. I wish I could post pictures on this site because the deterioration was amazing. The expansion of the metal and the gas/water separator was almost gone, plus the expansion made the passageway extremely small. After replacing the elbow, water flow out the back like never before. Come to find out, I was very lucky. If the elbow doesn't expel the water correctly, there is a good chance it may create a water back up to the cylinders. Morale of the story - the mixing elbow (although expensive) is considered an expendable part. I've grown up in my pursuit of getting the engine back to new. I had an engine failure when I was out sailing in a storm. After the 30K winds and rain stopped, there was a dead calm. We were crossing the San Pedro channel to get to Catalina, so we wanted to get moving. I fired up the motor and it started just fine. After about 30 minutes of running through the rough water it slowed down and then stopped. - The reason . . . . a dirty fuel tank. Most of the bad stuff in diesel fuel like water and algae seem to sink to the bottom. When stirred this stuff will quickly plug your filters. Just a bad set of circumstances to have engine failure when you need them . . . . keep your fuel clean. It's not a bad idea to annually pump out a gallon from the bottom and see what it looks like. 2qm20 fans – the key to success is maintenance. I’ve made several key mistakes by trying to spend the least amount of money. My mixing elbow started to leak but the drip was in the engine area and the excess would just run into the bilge, so I thought no big deal. Bad idea. I day/night sail a couple of times a week and only run the motor about 10 minutes to get out of the harbor and about 10 minutes to get back so not a lot of water kicking out of the mixing elbow. What I didn’t think about was all that excess salt moisture in the engine room. After several months having all that moist salty air in my engine room started to take its toll on the engine room. I finally patched (yes patched) the leak by getting a radiator hose that would fit over mixing elbow and a couple of clamps later – no leak. I went along like that for the next couple of years until the area around the clamp started getting soft and chunks of metal started falling off. I wish I could post pictures on this site because the deterioration was amazing. The expansion of the metal and the gas/water separator was almost gone, plus the expansion made the passageway extremely small. After replacing the elbow, water flow out the back like never before.

Come to find out, I was very lucky. If the elbow doesn’t expel the water correctly, there is a good chance it may create a water back up to the cylinders. Morale of the story – the mixing elbow (although expensive) is considered an expendable part.

I’ve grown up in my pursuit of getting the engine back to new. I had an engine failure when I was out sailing in a storm. After the 30K winds and rain stopped, there was a dead calm. We were crossing the San Pedro channel to get to Catalina, so we wanted to get moving. I fired up the motor and it started just fine. After about 30 minutes of running through the rough water it slowed down and then stopped. – The reason . . . . a dirty fuel tank. Most of the bad stuff in diesel fuel like water and algae seem to sink to the bottom. When stirred this stuff will quickly plug your filters. Just a bad set of circumstances to have engine failure when you need them . . . . keep your fuel clean. It’s not a bad idea to annually pump out a gallon from the bottom and see what it looks like.

]]> By: PyratCapn http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1390 PyratCapn Fri, 10 Jun 2011 11:24:44 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1390 Don't use anything from a tube for a gasket. It could get inside the pump and that would plug up your system, tear up your pump, etc. Any Yanmar dealer should be able to order the gaskets you need. There is a major dealer here in Florida: Mastry Engine, Phone: (727) 522-9471 Not sure about the gasket question. I believe I only had one between the plate and the housing. Don’t use anything from a tube for a gasket. It could get inside the pump and that would plug up your system, tear up your pump, etc. Any Yanmar dealer should be able to order the gaskets you need. There is a major dealer here in Florida:
Mastry Engine, Phone: (727) 522-9471
Not sure about the gasket question. I believe I only had one between the plate and the housing.

]]> By: jeanfrancois Ramousse http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1388 jeanfrancois Ramousse Wed, 08 Jun 2011 14:22:02 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1388 Hi Everyone...I am a newbie to this thread...and to Yanmar diesels. My 2QM20 having a leaky waterpump , I decided to upgrade to the SPEEDSEAL impeller cover and ordered one .Although I stated the exact type of engine , they sent me a cover that wouldn't fit and that I had to send back (to England). Now I am about to reinstall the original cover and would like to know where to get the gaskets. Although , are the 2 gaskets , on each side of the SS plate identical ? ...and does anyone has any experience replacing successfully the paper gasket with.....something from a tube ?? Thanks in advance , Hi Everyone…I am a newbie to this thread…and to Yanmar diesels.
My 2QM20 having a leaky waterpump , I decided to upgrade to the SPEEDSEAL impeller cover and ordered one .Although I stated the exact type of engine , they sent me a cover that wouldn’t fit and that I had to send back (to England).
Now I am about to reinstall the original cover and would like to know where to get the gaskets.
Although , are the 2 gaskets , on each side of the SS plate identical ?
…and does anyone has any experience replacing successfully the paper gasket with…..something from a tube ??
Thanks in advance ,

]]> By: PyratCapn http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1381 PyratCapn Sun, 22 May 2011 14:12:00 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1381 Try Wills Starter in St. Petersburg, FL. 4695 49th St N Saint Petersburg, FL 33709 (727) 522-7420 They had a good replacement that was around$200 compared to $800 for one from Yanmar. Try Wills Starter in St. Petersburg, FL.
4695 49th St N
Saint Petersburg, FL 33709
(727) 522-7420
They had a good replacement that was around$200 compared to $800 for one from Yanmar.

]]> By: bill http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1379 bill Sun, 22 May 2011 02:02:08 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1379 looking to buy a starter for a 20 hp yanmar,2qm20y, tks bill looking to buy a starter for a 20 hp yanmar,2qm20y,
tks bill

]]> By: Tom http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1376 Tom Mon, 09 May 2011 15:21:10 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1376 Craig, when you replaced the elbow where were you able to find the replacement? Craig,
when you replaced the elbow where were you able to find the replacement?

]]> By: khan http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1299 khan Sun, 23 Jan 2011 07:26:25 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1299 Please can you supply me the used yanmar 2qm20 marine engine or used parts such as startermotor,impellar,cylinder head ,crankshaft and water pump. Please can you supply me the used yanmar 2qm20 marine engine or used parts such as startermotor,impellar,cylinder head ,crankshaft and water pump.

]]> By: Rich http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1182 Rich Mon, 10 Jan 2011 16:13:01 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1182 MAC try these guys: Mastry Engine 727-522-9471, they know almost everything there is to know. MAC try these guys: Mastry Engine 727-522-9471, they know almost everything there is to know.

]]> By: MAC http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1180 MAC Mon, 10 Jan 2011 16:08:23 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1180 have e32 with 2qm20, what 3 blade prop would work pitch etc.... have e32 with 2qm20, what 3 blade prop would work pitch etc….

]]> By: MAC http://tampa-bay-sailing-blog.com/archives/160/comment-page-1#comment-1179 MAC Mon, 10 Jan 2011 16:07:16 +0000 http://tampa-bay-sailing-blog.com/?p=160#comment-1179 have e32 with 2qm20....would like to add a 3 blade prop.... any ideas , pitch etc..... have e32 with 2qm20….would like to add a 3 blade prop….
any ideas , pitch etc…..

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