Day before launch urgh!!!!

[MJWB]

Test run engine today prior to relaunch tomorrow, now postponed. Had refitted thermostat this morning, what I thought was uneventful short task. Ran the engine taking cooling water from a water butt only to find the water leaking out at the thermostat housing. Take it off and discover that the o ring on the by-pass pipe to exhaust elbow had failed, preumably on refit as I checked it just before. This at the thermostat end. Does anyone know if it is possible to buy just the o ring or must one buy a kit? Thanks.

 

[RobF]

Might be helpful to have just a bit more info - e.g. what engine is this for

 

[MJWB]

Might be helpful to have just a bit more info - e.g. what engine is this for

Ah good point. I'm gutted and distracted. It's a VP 2002.

 

[Supertramp]

You can buy almost any O ring online - I use Seals'r'us. Measure it carefully (micrometer) for diameter and tube diameter as there is extensive choice of sizes! Use silicone grease to help it seat and avoid trapping.

 

[MJWB]

You can buy almost any O ring online - I use Seals'r'us. Measure it carefully (micrometer) for diameter and tube diameter as there is extensive choice of sizes! Use silicone grease to help it seat and avoid trapping.

Thanks

 

[geem]

Test run engine today prior to relaunch tomorrow, now postponed. Had refitted thermostat this morning, what I thought was uneventful short task. Ran the engine taking cooling water from a water butt only to find the water leaking out at the thermostat housing. Take it off and discover that the o ring on the by-pass pipe to exhaust elbow had failed, preumably on refit as I checked it just before. This at the thermostat end. Does anyone know if it is possible to buy just the o ring or must one buy a kit? Thanks.

Take the old one to a good engineering supplies. They should stock all sizes of O rings. Buy a spare as well. Shouldn't take long to fit

 

[waynes world]

I use Repower, very good, either website or call and they will get you one fast. had a few bits recently and had them next day if ordered 10amsih

 

[MJWB]

Thanks all. The old one is in two pieces and rather deformed. Keypart emailed me a VP drawing this morning so out of courtesy I ordered from them. Fingers crossed it will arrive tomorrow. Like all Volvo bits it seems v expensive for such a small item. No silicone grease on board som Amazon for that. One small item, such an impact. There is a lesson in this for me to be more careful and probably put the o ring on the pipe not on the hole.

 

[ghostlymoron]

Usually the size doesn't have to be an exact match anything about right will do. The thickness of the ring should be a reasonable fit in the slot. Either stretch it out a bit or scrunch it up a bit to fit.
I'm not a purist, obviously.

 

[Laysula]

Possibly too late now, but accurately measure the new one and make a note so thatif you ever need a replacement you know what to order.

 

[R.Ems]

You can buy O-ring kits with a large range of sizes from Screwfix etc.