Presuring Coolant on the spray
05-12-2006, 03:51 PM
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Presuring Coolant on the spray Last two times at the track on the bottle It's pressuring the cooling system and puking a gallon or two of Antifreeze out the radiator overflow. Completely sprays down the engine comparment, and rear tires.. Not a good senario at 130. It doesn't do it off the bottle. Also starting to have a little smoke on start up.
Think it's a Head gasket leak?
Could it be blowby on the pistons?
Maybe retorque the head studs? (I don't remember retorquing when I put the heads on)
I'm still on the stock bottom end.
Dan
Think it's a Head gasket leak?
Could it be blowby on the pistons?
Maybe retorque the head studs? (I don't remember retorquing when I put the heads on)
I'm still on the stock bottom end.
Dan
05-12-2006, 04:39 PM
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My boosted car did that exact same thing. It was caused by detonation chattering the heads enough to take out my Cometic head gaskets and two pistons. I would recomend pulling the heads and giving it a good once over before you spray it any more.
05-12-2006, 07:59 PM
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Are your heads milled? What type HG used? Whats the timing at?
Of course a leak down would be good and well as pressure test the coolant, but that will only tell you where its puking, we need to figure out why!
Of course a leak down would be good and well as pressure test the coolant, but that will only tell you where its puking, we need to figure out why!
05-12-2006, 07:59 PM
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Most definitely lifting the head gaskets. My car did the same and the cometic gaskets were completely destroyed. I would pull the heads before you do anything.
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05-12-2006, 08:30 PM
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I wonder what caused my coolant overflow tank to overflow those 2 times only ??
I had the intake manifold off a few weeks ago and I did not see any coolant leaking near my gasket at all. Weird that it only happened twice to me when i first installed the nitrous and since those 2 times i have went through tons of bottles without the overflow. still
I had the intake manifold off a few weeks ago and I did not see any coolant leaking near my gasket at all. Weird that it only happened twice to me when i first installed the nitrous and since those 2 times i have went through tons of bottles without the overflow. still
05-13-2006, 04:35 PM
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Probably lifting the heads on nitrous - this is common. Stuff is going to move around on these motors due to the 4 bolt/cylinder head design.
I've had the problem before and was using a cometic gasket......a lot of the boosted guys are using the stock MLS gaskets with good success, but nitrous is a little more violent and probably a lot harder on your gasket.
I would do a leakdown, pull your heads, swap in some new gaskets, and make sure your AF ratio isn't too lean and your timing isn't set too high.
Good luck.
I've had the problem before and was using a cometic gasket......a lot of the boosted guys are using the stock MLS gaskets with good success, but nitrous is a little more violent and probably a lot harder on your gasket.
I would do a leakdown, pull your heads, swap in some new gaskets, and make sure your AF ratio isn't too lean and your timing isn't set too high.
Good luck.
05-13-2006, 05:34 PM
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|"pushing water" sounds like your lifting heads, could be timming, tune, to much cylender press, ect ect ect.
id suggest pulling the heads and throwing a new set of gaskets on it, and evaluat your tune/timming and fuel
good luck
id suggest pulling the heads and throwing a new set of gaskets on it, and evaluat your tune/timming and fuel
good luck
05-13-2006, 06:21 PM
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just swapping gaskets may not be the answer. maybe not a bad idea when the heads are off to get them checked for warpage, also the block should be checked while they are off. if you have any room maybe get the heads decked if need be, your tune could be fine and the machining could have been off the whole time.
05-15-2006, 01:26 PM
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Thanks for all the feedback guys. My guess is lifting the head also. Like I said I don't remember retorquing the head studs after it went through a few heat cycles. It only does it spraying a 150 shot at the track, not on a 100 shot or lower. I'll pull the heads off and take a look and replace the gaskets and make sure I torque everything down a little better 
