If you have a Nanni diesel read this

sailorman

sailorman

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I changed the coolant in my 4150 on Friday, when refitting the H.E filler cap the whole assembly turned as i tightened the cap :disgust::disgust:
I phoned Peachment & it was confirmed this brass housing is just bonded into the aluminium housing, & mine had failed.
i cleaned mating surfaced & rebonded with Bison epoxy metal, & left overnight to cure. topped up the coolant & run the engine.
This need checking on all engines
i was lucky to be in a marina berth when mine failed, @ 1400 hrs of use.
The engine has been faultless in the 13 yrs since i installed it ( apart from damn alternator belt req frequent adjustment ) i have only ever changed had the exhaust elbow in that time .
 
I suspect most filler necks are the same - brass neck glued into an aluminium casting. My own engine is a Sole mini-14 and the same happened to me. I'm wondering whether to add some studs or short screws to the flange to take the load off the epoxy when fitting or removing the cap...

Rob.
 
rob2 said:
I suspect most filler necks are the same - brass neck glued into an aluminium casting. My own engine is a Sole mini-14 and the same happened to me. I'm wondering whether to add some studs or short screws to the flange to take the load off the epoxy when fitting or removing the cap...

Rob.
Click to expand...

its only the 3rd time the cap have been removed, any topping-up is via the expansion tank
 
Beta's used to suffer from a similar issue, but I believe the materials and construction were improved a few years ago. Certainly something to keep a sharp eye on with any engine, though.

Strange that it should happen in a Nanni heat exchanger which has such a wonderfully compatible collection of metals, to paraphrase a well-known forumite from here or there;) Glad no harm done and that you got it fixed.
 
macd said:
Beta's used to suffer from a similar issue, but I believe the materials and construction were improved a few years ago. Certainly something to keep a sharp eye on with any engine, though.

Strange that it should happen in a Nanni heat exchanger which has such a wonderfully compatible collection of metals, to paraphrase a well-known forumite from here or there;) Glad no harm done and that you got it fixed.
Click to expand...

:)

it has its very first ever anode fitted now that Nanni have changed from CI elbows to Alloy with an in build anode, this pencil anode does 6 months & i now make my own for pennies
 
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