Unstoppable Coolant Leak
I have a la 360 with Magnum heads. Block is bored .060" over, stock crank, eagle rods, KB flattops. Custom grind Comp roller cam , retrofit roller lifters with matching springs. The past few times I've had the heads off for various reasons, there's been a slight coolant leak but only to the outside- Front/rear drivers, front passenger. Usually a bottle of Bar's block sealer stops the leak and it's all good to go.
Example A -video was made about a year ago:
Beginning of the month I blew a head gasket (thread Piston Failure ). Blew out into the lifter valley, so no coolant leak or overheating. Since it was all apart, I went ahead and got the heads flat-milled (.010"), hoping to fixed the ever-present coolant leak that is always there upon re-installation. Cleaned everything with scotchbrite and acetone, wiped with clean rags, same procedure as always. Start it idle to temp, small leak. figured the block deck itself is a little off wack. Bar's block sealer goes in, followed directions and then let cool. Leak stopped. Drove it, got on the the throttle pretty good. Got home and leak was there again. Retorqued the intake and another test drive. Got home and this:
Looked like maybe it was leaking where the intake meets the block, so took the intake off and regakseted it (edlebrock 7277). Used rtv around the coolant ports and put it back together. Spent the day Saturday driving it, taking it easy, temp saw maybe 200* max (kept off the highway, rpm's never saw above 2600) No leaks. Pulled the valve covers today and checked the head bolt torque, tightened the intake torque back to spec, and tightened a few hose clamps. Took a spirited drive to Kroger and this is what I see:
Both heads, Drivers side looked like it was coming more from the top
Doesn't leak at all at idle or easy throttle, up to 200 maybe more degrees. Leaks under hard throttle no matter how hot. Used to be cured with a bottle of block sealer, milled the heads to remedy that and now cant seal at all.
Heads are flat, Brand-new gaskets all around. Is there anything I can try? Or is my block deck done for and need to be milled flat? How easy is it to warp a block? Haven't overheated any at all, MAYBE 220* max on this block at one time last summer.
I have a la 360 with Magnum heads. Block is bored .060" over, stock crank, eagle rods, KB flattops. Custom grind Comp roller cam , retrofit roller lifters with matching springs. The past few times I've had the heads off for various reasons, there's been a slight coolant leak but only to the outside- Front/rear drivers, front passenger. Usually a bottle of Bar's block sealer stops the leak and it's all good to go.
Example A -video was made about a year ago:
Beginning of the month I blew a head gasket (thread Piston Failure ). Blew out into the lifter valley, so no coolant leak or overheating. Since it was all apart, I went ahead and got the heads flat-milled (.010"), hoping to fixed the ever-present coolant leak that is always there upon re-installation. Cleaned everything with scotchbrite and acetone, wiped with clean rags, same procedure as always. Start it idle to temp, small leak. figured the block deck itself is a little off wack. Bar's block sealer goes in, followed directions and then let cool. Leak stopped. Drove it, got on the the throttle pretty good. Got home and leak was there again. Retorqued the intake and another test drive. Got home and this:
Looked like maybe it was leaking where the intake meets the block, so took the intake off and regakseted it (edlebrock 7277). Used rtv around the coolant ports and put it back together. Spent the day Saturday driving it, taking it easy, temp saw maybe 200* max (kept off the highway, rpm's never saw above 2600) No leaks. Pulled the valve covers today and checked the head bolt torque, tightened the intake torque back to spec, and tightened a few hose clamps. Took a spirited drive to Kroger and this is what I see:
Both heads, Drivers side looked like it was coming more from the top
Doesn't leak at all at idle or easy throttle, up to 200 maybe more degrees. Leaks under hard throttle no matter how hot. Used to be cured with a bottle of block sealer, milled the heads to remedy that and now cant seal at all.
Heads are flat, Brand-new gaskets all around. Is there anything I can try? Or is my block deck done for and need to be milled flat? How easy is it to warp a block? Haven't overheated any at all, MAYBE 220* max on this block at one time last summer.
