Inboard Perkins 30HP Diesel Overheating
- Thread starter damoses1
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you may be able to weld that ...take it off and take it to a radiator shop had have it checked out ...if thats the only place that is cracked take to a machine shop and have it welded...but make sure the machine shop you go to has the ability to do it ...if i were to weld it i would use certanium 889 electrods......hope this helps you in the right direction ....after all you don't have much to loose at this point .....or you may have a T I G welder weld it with bronze silicon filler metal
regards
woody
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Just in case you need a HX source:
http://c34.org/bbs/index.php/topic,6920.0.html
IIRC, your OP said you have had this boat three years? If so, now's the time, in addition to us being able to help you here, to get a good book on diesel engines if you haven't already. I put off buying a larger boat for too many years 'cuz I was "afraid" of diesels. When we bit the bullet, we bought one with an engine that the PO said was prone to overheating. I did a lot of reading, and ended up taking off the HX, found a lot of salt precipitation on one of the ports, cleaned it out and it's been running fine ever since. I also read a lot and learned to bleed the engine - I put if off for a year, 'cuz I was afraid I wouldn't be able to get it to restart.
Diesels are pretty simple, other than complete teardowns and rebuilds. If you need to learn more, I heartily recommend that you do so, 'cuz none of us was "born" diesel mechanics, we, too, all had to learn all this claptrap!
Good luck. Let us know what else we can do.
http://c34.org/bbs/index.php/topic,6920.0.html
IIRC, your OP said you have had this boat three years? If so, now's the time, in addition to us being able to help you here, to get a good book on diesel engines if you haven't already. I put off buying a larger boat for too many years 'cuz I was "afraid" of diesels. When we bit the bullet, we bought one with an engine that the PO said was prone to overheating. I did a lot of reading, and ended up taking off the HX, found a lot of salt precipitation on one of the ports, cleaned it out and it's been running fine ever since. I also read a lot and learned to bleed the engine - I put if off for a year, 'cuz I was afraid I wouldn't be able to get it to restart.
Diesels are pretty simple, other than complete teardowns and rebuilds. If you need to learn more, I heartily recommend that you do so, 'cuz none of us was "born" diesel mechanics, we, too, all had to learn all this claptrap!
Good luck. Let us know what else we can do.
Hi Kloudie1. No, unfortunately it is not a drain hole. It is a crack in the heat exchanger. Stu- thanks for the link! I'll be sure to check them out.
I wasn't able to load more than one picture on my ipad for my post yesterday. Here's a few more images.
I wasn't able to load more than one picture on my ipad for my post yesterday. Here's a few more images.
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yes it can and from the looks of the pics for about 1 tenth the cost of a new one ...and done right it will be ok for a long time......
regards
woody
Well, there's yer problem. Yeah, weld it. Simple. Nickel or stainless either one, but I prefer nickel. Or the king daddy, high frequency tig. The end.
I swear that first picture looks to me like something has been wearing across it, like the belt or something. Hmm..
Why the picture of the sending unit?
I swear that first picture looks to me like something has been wearing across it, like the belt or something. Hmm..
Why the picture of the sending unit?
Found It!
The hole was actually here (see attached).
Luckily the entire heat exchanger wasn't cracked, as previously thought.
I don't have the tools or know how to weld. It looks like patching this would be easy. Any quick fixes I could do myself?
Recommendations please!
The hole was actually here (see attached).
Luckily the entire heat exchanger wasn't cracked, as previously thought.
I don't have the tools or know how to weld. It looks like patching this would be easy. Any quick fixes I could do myself?
Recommendations please!
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Is the leak in that little metal cup? Looks like a freeze plug to me. You could either take it to a mechanic (freeze plugs are used in car engines too) or measure it, buy one from a parts house and check goggle instructions for removing and replacing freeze plugs.
If it's a crack, take it to a welder. As an old Master Blaster I know is fond of saying "you can do it right or you can do it again".
If it's a crack, take it to a welder. As an old Master Blaster I know is fond of saying "you can do it right or you can do it again".
Here is information on freeze plugs. They are available at any auto parts store and can be installed yourself.
http://voices.yahoo.com/how-replace-freeze-plugs-engine-6406420.html
It looks like you had one that just corroded away (typical if a proper coolant to water ratio is not maintained).
http://voices.yahoo.com/how-replace-freeze-plugs-engine-6406420.html
It looks like you had one that just corroded away (typical if a proper coolant to water ratio is not maintained).
Thanks Allan, but I just got back from west marine, three auto stores, and one motorcycle parts shop and couldn't get one. West marine said they dont carry them and referred me to the auto parts store; the auto parts store had them, but didn't have one small enough to fit- so he referred me to the motorcycle/wave runner shop and the jerk behind the counter there refused to believe motorcycles & wave runners had them. He was no help and sent me back home.
At least the auto parts store guy measured it, so I know what size to get: 15mm or 5/8 inch. Since this is a Perkins, I'm assuming metric will fit better.
Any other suggestions on where I could find one that will fit?
Thanks again everyone! I can't wait to get this fixed and get back on the water!
At least the auto parts store guy measured it, so I know what size to get: 15mm or 5/8 inch. Since this is a Perkins, I'm assuming metric will fit better.
Any other suggestions on where I could find one that will fit?
Thanks again everyone! I can't wait to get this fixed and get back on the water!
since the manifold/heatex is off the engine, you can take it to a machine shop and have that hole threaded for a 5/8 short pipe plug?? Will cost $50 or thereabouts, but it will be fixed. The measurement looks to be off a bit because 5/8 is a lot closer to 16mm .. I believe that it is probably 15mm, since that part was probably cast and machined in Italy.Those small plugs are available, but not easily.
http://www.ebay.com/itm/CORE-PLUGS-FREEZE-PLUGS-5-X-15MM-CUP-TYPE-/180719885669
I would bet that some Japanese engines use these but it looks like the plugs are sold in a kit instead of individually.. so you'd have to know which Honda or Mazda or Toyota engine to order a kit for..
You may be able to find a rubber one that would fit too.. :
http://www.ebay.com/itm/LOT-5-DORMA...1-4-/161061267288?hash=item257fffe758&vxp=mtr
but I would use that only temporarily until a real one could be located.. I think I would thread the manifold and put a pipe plug in and be done with it.
Note too that if this one is that corroded, check the others carefully ..
http://www.ebay.com/itm/CORE-PLUGS-FREEZE-PLUGS-5-X-15MM-CUP-TYPE-/180719885669
I would bet that some Japanese engines use these but it looks like the plugs are sold in a kit instead of individually.. so you'd have to know which Honda or Mazda or Toyota engine to order a kit for..
You may be able to find a rubber one that would fit too.. :
http://www.ebay.com/itm/LOT-5-DORMA...1-4-/161061267288?hash=item257fffe758&vxp=mtr
but I would use that only temporarily until a real one could be located.. I think I would thread the manifold and put a pipe plug in and be done with it.
Note too that if this one is that corroded, check the others carefully ..
Damoses,
Well so much for being an easy solution. I know I've bought those in the past for some car project I was working on, but I guess no longer. One time I hammered a copper penny (not the new zinc ones) in a transmission I rebuilt. That worked fine.
Here is a place that makes freeze plugs. They should have the size you need.
http://freezeplugfactory.com/expansion-plug-size-chart/
When the one on my truck rotted through about an inch from the firewall on the back of the engine that was totally impossible to change I made a big blob of JB Weld epoxy putty and stuck right over the entire hole. It hardened up like steel and has been there now for at least 15 years. Desperate times call for desperate measures.
Allan
Well so much for being an easy solution. I know I've bought those in the past for some car project I was working on, but I guess no longer. One time I hammered a copper penny (not the new zinc ones) in a transmission I rebuilt. That worked fine.
Here is a place that makes freeze plugs. They should have the size you need.
http://freezeplugfactory.com/expansion-plug-size-chart/
When the one on my truck rotted through about an inch from the firewall on the back of the engine that was totally impossible to change I made a big blob of JB Weld epoxy putty and stuck right over the entire hole. It hardened up like steel and has been there now for at least 15 years. Desperate times call for desperate measures.
Allan
Update: my local Napa Auto Parts store had a freeze plug that looked exactly the same size as the one I needed. (I held it up to the one I removed.) When I installed the new plug, it plugged the hole, but it doesn't feel as snug as I think it should be.
I'm considering using jb weld as Allan recommended, just to reinforce the plug. They seem to make tons of different versions of jb weld. Which do you recommend?
I'm considering using jb weld as Allan recommended, just to reinforce the plug. They seem to make tons of different versions of jb weld. Which do you recommend?
Yep.. I agree.. carefully clean the hole in the manifold, lightly sand and clean the OD (of a new plug) and put a thin, uniform coat of JB Weld around the hole and around the outside of the plug and hammer it in there.
Original "Cold Weld" formula is fine for that job..
Original "Cold Weld" formula is fine for that job..
Update: After buying the last package of the "quick" version of jb weld at my local auto parts store, one of the tubes was dried up and I had to return the quick version for the original version of jb weld. Anyway, i sanded and cleaned the area and now the new freeze plug is installed. I wish I wouldn't have to wait 24 hours to test it out! The weather in Michigan is terrific today!
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