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Search took 0.00 seconds. Search: Posts Made By: daveNZ
Forum: Engines and Propulsion Systems 05-08-2022, 01:24
Replies: 14
Views: 4,764
Posted By daveNZ
Re: Raw water pump leak; too much back pressure?

…and still not leaking, amazing!!
Forum: Engines and Propulsion Systems 05-11-2021, 00:16
Replies: 14
Views: 4,764
Posted By daveNZ
Re: Raw water pump leak; too much back pressure?

Solved, and comments by me are in another thread, added a little grease, eventually stopped leaking!
Forum: Engines and Propulsion Systems 06-03-2019, 18:38
Replies: 14
Views: 4,764
Posted By daveNZ
Re: Raw water pump leak; too much back pressure?

Skin fitting = through hull!
Forum: Engines and Propulsion Systems 05-03-2019, 23:48
Replies: 14
Views: 4,764
Posted By daveNZ
Re: Raw water pump leak; too much back pressure?

Interesting!! What that reinforces is that I need to check the whole pathway, although not that many pieces. Maybe even the final skin fitting at 36mm ID (1 1/2”) is not big enough ?
This pump...
Forum: Engines and Propulsion Systems 05-03-2019, 11:52
Replies: 14
Views: 4,764
Posted By daveNZ
Re: Raw water pump leak; too much back pressure?

Yes, thanks, seals are correct! I also have the original 1970s? engineering drawing for the pump.
One unusual aspect is the impellor end of the shaft is larger for about 20mm, so the seals have to...
Forum: Engines and Propulsion Systems 04-03-2019, 11:30
Replies: 14
Views: 4,764
Posted By daveNZ
Re: Raw water pump leak; too much back pressure?

Re the plug. It is a stainless elbow, so could the plug still be a manufacturing artefact?

I don’t think any of the fittings are small enough to be restricting flow??

Maybe I should bench test...
Forum: Engines and Propulsion Systems 03-03-2019, 23:24
Replies: 14
Views: 4,764
Posted By daveNZ
Raw water pump leak; too much back pressure?

Thanks for the comments.
I should have said, the exhaust elbow and heat exchanger are as clean as I can get them, cleaned every year. Exhaust hose and water lock muffler are 16 years old but it is...
Forum: Engines and Propulsion Systems 03-03-2019, 13:21
Replies: 14
Views: 4,764
Posted By daveNZ
Raw water pump leak; too much back pressure?

I’ve had continual leaks from the Johnson brass pump on a 40hp Lombardini. Always assumed it was scratched shaft, replaced that, added a speedi sleeve when I wasn’t sure the new one was prefect...
Showing results 1 to 8 of 8

 
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