:dude:hi guys, when for a run today, after renewing the viscous coupling, went about 25 miles, when the needle started rising to the red, i had to stop , the water had gone down a lot. i looked for a leak, but the only thing i could see was water boiling in the vee. the carbs were also loose , in that i could partly turn them. i duly arrived home by breakdown lorry. Is there a gasket in the vee that should be water tight, and if so what sort of job is involve, any help please. paul
-
-
imported post
Hi Paul
Coolant in the V is usually coming from one of two places either the inlet manifold or the water pump.
However if there is quite a lot it could be coming from one of the hoses heading to the heater
Darren
-
imported post
Paul,
I had exactly the same thing a couple of weeks ago. Mine was the top hose from the thermostat to the rad. The jubilee clip had somehow loosened and the back pressure was forcing steam & water into the vee. Tightened her up and all is well now.
Hope your's is as simple.
Tim
Comment
-
imported post
I concur with V8 Rumbler - check the hoses are tight 1st, and look for a split/and or leak.
Secondly I would suspect one of the Inlet Manifold gaskets, but check 1st that the Manifold is on tight - one or two of the bolts could have stripped a thread and/or need tightening up.
You have to remove the Inlet Manifold anyway if the problem is the Water Pump or it's gasket. If you do remove the Inlet Manifold to put on new gaskets - might as well check/replace Water Pump gasket whilst you can get at it. If you have to remove the water pump to check it, you need a special extractor tool which you can hire.
Up until a couple of years ago I had the Inlet Manifold off umpteen times (for various reasons) - & invariably the threads in the Heads for holding the Inlet Manifold bolts stripped necessitating using bigger bolts and/or helicoils when re-assembling. I eventually got a re-conditioned Inlet Manifold from Paddocks, & since putting this on haven't had to take it off again once.
The carb housing should be fairly tight on the manifold but it is sometimes able to move it from side to side. Check the single centre bolt that attaches the carb housing to the manifold is tight, and/or you may have a worn fibre washer that goes with this bolt.
Terry
Comment
-
imported post
:dude:hi guys , thanks for the info, have now removed the inlet manifold, and water pump, came out easy, now!, do i just replace the rubber rings on the water pump and thegasket ,it can only leak from these points?. i under stand you have to tighten the bolds up then check the gap and use gaskets to suit??. and use new gaskets on the manifold, which i think was my problem. some were loose. also as you said the carbs were loose i could turn them a little.paulComment
-
imported post
If you are sure the original leak was from the water pump, the chances of it just being the o rings are pretty slim, and more likely the pump wants a rebuild, and the impeller refacing....... try and rebuild your existing pump as there are some dodgy "new" ones around that strip the gears from the shaft and cause havoc with your jackshaft..........Comment
-
imported post
:dude:hi kryten, i am not totalysure it was the pump, it can only be that or the inlet manifolds that was leaking, I just making sure of covering all my bets!. It leaked somewhere,i am also changing all the hoses as well, When sticking inlet gaskets on would it be best to stick them on one side first, and let them dry before fitting manifold so they have less chance to move?. paul. ps, how do you go about doing the pump, i thought you just change the parts?.Comment
Comment