asteven221
Well-Known Member
I changed the exhaust elbow at the weekend on my D2-55 engine which was simple enough, but found that the join was blowing fumes.
I took it all apart again, cleaned the surfaces again, used a new gasket and smeared some exhaust sealing gloop called Holts Firegum bought at Halfords. Tonight i will pop down and see if it's worked!
When cleaning up the face of the joint on the heat exchanger I noticed that corrosion has reduced the thickness of the metal at he joint a lot, which is likely why it didn't fully seal. There is a face there to join to, but it's obviously thinner than it's meant to be.
I can see that even if i get the seal working ok, I am still going to have to address the corrosion at some point in the not too distant future, so I checked out the cost of a new heat exchanger. 3700 euros!!! Well that focuses the mind on getting a repair. Research seems to suggest it can be repaired, but my dilemma is getting it done now, or to leave it until December this year. My thinking is that right now the joint has got some good metal and perhaps that would be easier to repair rather than taking the risk that a hole develops and it becomes harder (impossible?) to repair. Maybe there is enough metal there to last for a year or two. It's hard to tell. I am thinking that if there is metal there then it would be easier to build up some thickness from it rather than trying to repair a gap.
Any advice? Thoughts?
I took it all apart again, cleaned the surfaces again, used a new gasket and smeared some exhaust sealing gloop called Holts Firegum bought at Halfords. Tonight i will pop down and see if it's worked!
When cleaning up the face of the joint on the heat exchanger I noticed that corrosion has reduced the thickness of the metal at he joint a lot, which is likely why it didn't fully seal. There is a face there to join to, but it's obviously thinner than it's meant to be.
I can see that even if i get the seal working ok, I am still going to have to address the corrosion at some point in the not too distant future, so I checked out the cost of a new heat exchanger. 3700 euros!!! Well that focuses the mind on getting a repair. Research seems to suggest it can be repaired, but my dilemma is getting it done now, or to leave it until December this year. My thinking is that right now the joint has got some good metal and perhaps that would be easier to repair rather than taking the risk that a hole develops and it becomes harder (impossible?) to repair. Maybe there is enough metal there to last for a year or two. It's hard to tell. I am thinking that if there is metal there then it would be easier to build up some thickness from it rather than trying to repair a gap.
Any advice? Thoughts?
