Someone was careless with my engine!

[Seahope]

At some point someone (and definitely not me!) put the wrong bolt in the alternator bracket hole. Look what they did.

Since I have had the boat and to my knowledge no one has touched that part of the engine. Unless the Forum thinks I should spend £600+ for a new front cover I think a small weld will suffice?

Glad it was spotted though by the engineer rebuilding them both with new pistons, cylinder linings, big ends etc. etc.

 

[Alpha22]

ouch!!!
Some people will never learn, that bolt was that long for a reason, why replace with something different????

Hope the weld turns out OK.

 

[ccscott49]

Many a triumph motor cycle cover with cracks just like that welded up without problems. Nowadays its even easier to do, with TIG available.

 

[tinkicker0]

At some point someone (and definitely not me!) put the wrong bolt in the alternator bracket hole. Look what they did.

Since I have had the boat and to my knowledge no one has touched that part of the engine. Unless the Forum thinks I should spend £600+ for a new front cover I think a small weld will suffice?

Glad it was spotted though by the engineer rebuilding them both with new pistons, cylinder linings, big ends etc. etc.

Common on timing covers where people have used that orrible instant gasket too. People should be shot dead for using that stuff. In the oil path, dry gasket only, or dry gasket stuck down with a dab of grease if no dowels to hold it in place.

It gets into blind holes and it has nowhere to go when you screw the bolt in and fractures the housing similar to the pic.

That's why I never ever use powered tools to reassemble a motor, at least you have a chance of feeling stuff going wrong.

 

[pappaecho]

Repaired a crack on a Speedtwin timing case in 1968 with Araldite.

Current owner reports still going strong...

 

[Lakesailor]

When you look at the other cracks going on in there I wouldn't worry.
Weld it if it makes you feel better.
At least it won't open any more and lead to a stripped thread.

 

[carlton]

http://uk.farnell.com/jsp/displayProduct.jsp?sku=1370093&CMP=e-2072-00001000&gross_price=true

 

[ccscott49]

Common on timing covers where people have used that orrible instant gasket too. People should be shot dead for using that stuff. In the oil path, dry gasket only, or dry gasket stuck down with a dab of grease if no dowels to hold it in place.

It gets into blind holes and it has nowhere to go when you screw the bolt in and fractures the housing similar to the pic.

That's why I never ever use powered tools to reassemble a motor, at least you have a chance of feeling stuff going wrong.

Proper way for oiltight triumphs, (old ones) is silk thread gaskets! But your nmating faces have to be very flat, holes recessed and thread coil inserts, with bronze or if you must stainless, allen bolts! Mine dont leak anymore!

 

[tangerine]

At some point someone (and definitely not me!) put the wrong bolt in the alternator bracket hole. Look what they did.

Since I have had the boat and to my knowledge no one has touched that part of the engine. Unless the Forum thinks I should spend £600+ for a new front cover I think a small weld will suffice?

Glad it was spotted though by the engineer rebuilding them both with new pistons, cylinder linings, big ends etc. etc.

Have I missed something here? Is this a boat engine,or a Triumph m/cycle engine. If the latter,bring it along. I,ll repair it while you wait. If the former,I guess the engine may still be installed. In which case,might be tricky getting boat and all through my w/shop door!

 

[Seahope]

When you look at the other cracks going on in there I wouldn't worry.
Weld it if it makes you feel better.
At least it won't open any more and lead to a stripped thread.

Any idea why the other cracks are there? Should I just ignore them or does the part need changing? Being fairly ignorant of engines I have idea whether this is a cover plate or something through which water / oil passes when in operation.

To the others. This is a part from a boat engine which is currently with the repairers.

 

[ccscott49]

Have I missed something here? Is this a boat engine,or a Triumph m/cycle engine. If the latter,bring it along. I,ll repair it while you wait. If the former,I guess the engine may still be installed. In which case,might be tricky getting boat and all through my w/shop door!

I only mentioned triumph, because I have seen the same type of cracking on those covers and mentioning that it is an easy repair, nowadays.

 

[Nauti Fox]

Common on timing covers where people have used that orrible instant gasket too. People should be shot dead for using that stuff. In the oil path, dry gasket only, or dry gasket stuck down with a dab of grease if no dowels to hold it in place.
.

Best not go near a Ducastrophy engine Tinny, the whole thing is sealed together with Threebond 1215, the only gaskets used are head and valve covers with a few o rings thrown in.
It does scare the customers!
(Apologies for Fred Drift)

 

[gingie]

cracks

The crack was caused by an extra long bolt not the correct one so when the pump was removed its possible WHO ever did the water pump last time around picked up the wrong bolt. WHOOPS!

The other lines in there are pure casting marks and nothing to worry about.

Its scary the people that think they have the knowledge or expertise on things have NO practical skills.

Easily done hope all resolves itself soon

 

[gingie]

cracks

Common on timing covers where people have used that orrible instant gasket too. People should be shot dead for using that stuff. In the oil path, dry gasket only, or dry gasket stuck down with a dab of grease if no dowels to hold it in place.

It gets into blind holes and it has nowhere to go when you screw the bolt in and fractures the housing similar to the pic.

That's why I never ever use powered tools to reassemble a motor, at least you have a chance of feeling stuff going wrong.

Well these engines from Yanmar are also held together with threebond but its a decent instagasket

 

[tinkicker0]

Well these engines from Yanmar are also held together with threebond but its a decent instagasket

As are Yamaha crankcases (and the water joint gaskets on my boat also dabbed with a thin smear of the grey stuff). However we are talking a thin smear (with a small spreader cos 1215 is carcenogenic wondered why my finger end had fallen off).

I'm talking about the oafs who put on a 5mm bead of the stuff that squeezes out the sides by half an inch and hydraulics down the thread hole.