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Author Topic:   Heads, pushing water out of radiator????
Racer98
Dirt Maniac

Total posts: 142
posted October 11, 2005 05:48 PM  
i got a set of heads done up they were angle milled 80 thousands new valves and were magnufluxed and i had them on for 2 nights and water was coming out of my over flow of my raditor and pretty much empyting the raditor and i changed heads same block and all and everything worked fine, there was no water in my oil when i changed it also what could be possibly be wrong

STREET16
Dirt Maniac

Total posts: 158
posted October 11, 2005 05:59 PM  
Sounds like a crack to me. When you changed heads, was one of the pistons cleaner than the others?

DJR22
Dirt Maniac

Total posts: 111
posted October 11, 2005 06:08 PM  
Maybe bad head gasket?

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-stand on it-

b4racing
Dirt Forum Champ
Total posts: 626
posted October 11, 2005 06:42 PM  
what did your plugs look like. WHat gas was you running?

Racer98
Dirt Maniac

Total posts: 142
posted October 11, 2005 08:47 PM  
i dont remember seeing a piston cleaner than the other, head gasket wasnt blown, and i run unleaded pump gas

sc1 racing
Dirt Freak

Total posts: 419
posted October 11, 2005 11:27 PM  
could have been an air pocket in system..

theslowguy
Dirt Full Roller

Total posts: 30
posted October 12, 2005 06:43 AM  
What temp were you at when you were loosing all your water? Higher comp makes an engine run hotter.

dluna
Dirt Freak

Total posts: 334
posted October 12, 2005 08:09 AM  
I loose almost the exact same amount of water during every feature race. I tried a different cap, but that didn't fix the problem. At the beginning of the year, my engine builder showed me where 2 valve seats had small cracks in the right Head. With the cost of machining new seats, it didn't make sense to fix it, so we went with what we had. No smoke, oil looks great, plugs look great...I just think it is building up pressure through these cracks and pushing out the water. The only time it becomes an issue is when there is a long yellow with a lap or so left in the race because the radiator is a little low on water.

nine finger
Dirt Forum Racer

Total posts: 76
posted October 12, 2005 12:27 PM  
ill bet you are running pump gas. look at the gaskets directly accross from the spark plug.the fire ring wont be burnt but the composition material behind it will be grooved.toooo much compression for the gas you are running.

b4racing
Dirt Forum Champ
Total posts: 626
posted October 12, 2005 02:59 PM  
detonation or a lean condition is what I was thinking

789racin
Dirt Roller

Total posts: 7
posted October 12, 2005 06:20 PM  
i brought the heads in today and the 2 little water jet holes by the spark hole on the heads, one hole was little chipped away and since they were milled down he thinks that was the problem so he is goin to plug that hole does this sound right

789racin
Dirt Roller

Total posts: 7
posted October 12, 2005 06:22 PM  
o by the way i am under a buddies screen name so i am racer98 talking under 789 racing, also my engine is close to 9:1 compression think i need to run race gas or not nessarsary

[This message has been edited by 789racin (edited October 12, 2005).]

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