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Post by martinb on Nov 25, 2013 14:20:54 GMT 1
Fitted an aftermarket head gasket to my 250 lc and filled with high performance coolant, only to find 2 days later the head gasket leaking even thought tightened to spec in Haynes manual. Speaking to a car nut over here he had the same problem with a head gasket on his v8, something to do with the gasket material drawing the coolant out of the engine. Now i know the original gasket for the lc was metal. Has any one had the same problem or can recommend a suitable coolant.
Also there was a thermostat in the intake pipe to the engine and there is no mention of this in the Haynes manual. Is this just an Australian thing or are they fitted in the UK.
Any responses greatly appreciated
Martin
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Post by oldelsieboy on Nov 25, 2013 14:39:59 GMT 1
Fitted an aftermarket head gasket to my 250 lc and filled with high performance coolant, only to find 2 days later the head gasket leaking even thought tightened to spec in Haynes manual. Speaking to a car nut over here he had the same problem with a head gasket on his v8, something to do with the gasket material drawing the coolant out of the engine. Now i know the original gasket for the lc was metal. Has any one had the same problem or can recommend a suitable coolant. Also there was a thermostat in the intake pipe to the engine and there is no mention of this in the Haynes manual. Is this just an Australian thing or are they fitted in the UK. Any responses greatly appreciated Martin After fitting the head & filling the system did you run the motor up to temp, let cool & re-torque? OEB |
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Post by johnlc on Nov 25, 2013 15:06:05 GMT 1
Smear of silicone helos with pattern gaskets
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Post by looey on Nov 25, 2013 15:48:57 GMT 1
It'll be a head/head gasket problem, not coolant specific, surely.
I Did 2x top end rebuilds recently after a bit of research but there seems to be a lot of differing opinions about gaskets and sealants etc.
Mine was on a YPVS engine with a metal (multi-leaf) gasket but I've now used the same genuine head gasket twice with the thinest smear of RTV silicone on both sides of the head gasket and had no problems.
Before I filled with coolant, I started the bike and run it for a minute or so until quite warm to touch (not hot to touch), then let it cool to completely cold before a re-torque.
Think Haynes quote 20lbft for the head bolts on the YPVS but I think I did them to 23lbft after reading about.
I know yours isn't a YPVS but it might help a bit
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Post by martinb on Nov 26, 2013 11:48:25 GMT 1
Fitted an aftermarket head gasket to my 250 lc and filled with high performance coolant, only to find 2 days later the head gasket leaking even thought tightened to spec in Haynes manual. Speaking to a car nut over here he had the same problem with a head gasket on his v8, something to do with the gasket material drawing the coolant out of the engine. Now i know the original gasket for the lc was metal. Has any one had the same problem or can recommend a suitable coolant. Also there was a thermostat in the intake pipe to the engine and there is no mention of this in the Haynes manual. Is this just an Australian thing or are they fitted in the UK. Any responses greatly appreciated Martin After fitting the head & filling the system did you run the motor up to temp, let cool & re-torque? OEB |
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Post by martinb on Nov 26, 2013 11:53:21 GMT 1
Fitted an aftermarket head gasket to my 250 lc and filled with high performance coolant, only to find 2 days later the head gasket leaking even thought tightened to spec in Haynes manual. Speaking to a car nut over here he had the same problem with a head gasket on his v8, something to do with the gasket material drawing the coolant out of the engine. Now i know the original gasket for the lc was metal. Has any one had the same problem or can recommend a suitable coolant. Also there was a thermostat in the intake pipe to the engine and there is no mention of this in the Haynes manual. Is this just an Australian thing or are they fitted in the UK. Any responses greatly appreciated Martin After fitting the head & filling the system did you run the motor up to temp, let cool & re-torque? OEB This is a complete resto on a bike i purchased off ebay. I haven't kicked the thing over yet.If you can run without coolant in i will try starting it. The other thing i noticed was there doesn't seem to be much throttle movement, Maybe 1/2 turn. Does that sound right? |
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