The Ford Barn

JtownJoe · 11-24-2012, 02:28 PM

30" Tudor running great since engine rebuild in in Sept 08 (other than minor carburator issues) and always runs on the cool side 160* to 170*. About two weeks ago took her out for the day & put about 150 mi. on & she started to overheat, to about 200* to 220* & I kept it running & added quart or two of water & she cooled back down I checked for leaks & all is well, but 10 mi. later over heating again, added water again checked & no leaks, on way home started missing & running rough, got her home & found a lot of water coming out of exhaust while running. Removed plugs & ran compression test & had 100# to 102# on all cylinders but #s 3 & 4 were wet but no trace of water/antifreeze in oil. Running BF 5.9 Head & I am trying to remove head to check the gasket but haven't been able to break it free yet but is it even possible to have blown head gasket with perfect compression readings? Sorry for such a long post but trying to give best possible description

bogdonj · 11-24-2012, 03:01 PM

I'm not up to date with 5.9 Head's but maybe check your timing to see if it's set right... could also be the points have closed up and need adjusted?

AL in NY · 11-24-2012, 03:22 PM

Look for an crack near the #4 exhaust seat. Could be on the block surface and extending down into the exhaust port. That would explain your loss of coolant, and your missing and rough running.

H. L. Chauvin · 11-24-2012, 03:28 PM

Hope you did not crack the head or the block by adding cold water to an overheated head or block.

JtownJoe · 11-24-2012, 04:06 PM

I don't see how timing or points would connect with a coolant loss & I was very aware of the cold water (thermal shock effect) & did keep it running & added the water very slowly to avoid any boil or steam up so just to avoid that situation. I guess I need to remove the head to examine the block for any possible cracks in the valve & port area but with that in mind a blown head gasket sounds like a much friendlier scenario
!

lindy williams · 11-24-2012, 06:27 PM

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Did you retorque your head since installing it? If not, the problem is probably the gasket.

JtownJoe · 11-24-2012, 08:24 PM

Did the 3 torque sequence (on assembly, after warm up & after few hundred mi.) when assembled in 08' but haven't touched it since, just puzzles me how I get warm engine comp. readings of 100# on all 4 but get 2 plugs wet with coolant & losing coolant out the exhaust. I guess I'll find out when I get this head off!

hotrodderhaag · 11-24-2012, 09:14 PM

Sounds like a crack in the head or block., Do a leak down test also

11-24-2012, 02:28 PM	#1
JtownJoe Senior Member Join Date: May 2010 Location: Johnstown, PA Posts: 342	Blown head gasket??? 30" Tudor running great since engine rebuild in in Sept 08 (other than minor carburator issues) and always runs on the cool side 160* to 170. About two weeks ago took her out for the day & put about 150 mi. on & she started to overheat, to about 200 to 220* & I kept it running & added quart or two of water & she cooled back down I checked for leaks & all is well, but 10 mi. later over heating again, added water again checked & no leaks, on way home started missing & running rough, got her home & found a lot of water coming out of exhaust while running. Removed plugs & ran compression test & had 100# to 102# on all cylinders but #s 3 & 4 were wet but no trace of water/antifreeze in oil. Running BF 5.9 Head & I am trying to remove head to check the gasket but haven't been able to break it free yet but is it even possible to have blown head gasket with perfect compression readings? Sorry for such a long post but trying to give best possible description

11-24-2012, 03:01 PM	#2
bogdonj Senior Member Join Date: Aug 2010 Location: Walkerton, Ont. Canada Posts: 623	Re: Blown head gasket??? I'm not up to date with 5.9 Head's but maybe check your timing to see if it's set right... could also be the points have closed up and need adjusted? __________________ _________________________________________ 1931 Ford Model A Tudor 1930 Ford Model A Deluxe Roadster 1930 Ford Original Rolling Chassis- Restoring

11-24-2012, 03:22 PM	#3
AL in NY Senior Member Join Date: May 2010 Location: Southern Upstate New York Posts: 1,160	Re: Blown head gasket??? Look for an crack near the #4 exhaust seat. Could be on the block surface and extending down into the exhaust port. That would explain your loss of coolant, and your missing and rough running. __________________ AL in NY

11-24-2012, 04:06 PM	#5
JtownJoe Senior Member Join Date: May 2010 Location: Johnstown, PA Posts: 342	Re: Blown head gasket??? I don't see how timing or points would connect with a coolant loss & I was very aware of the cold water (thermal shock effect) & did keep it running & added the water very slowly to avoid any boil or steam up so just to avoid that situation. I guess I need to remove the head to examine the block for any possible cracks in the valve & port area but with that in mind a blown head gasket sounds like a much friendlier scenario !

11-24-2012, 06:27 PM	#6
lindy williams Senior Member Join Date: May 2010 Posts: 335	Re: Blown head gasket??? Sponsored Links (Register now to hide all advertisements) Did you retorque your head since installing it? If not, the problem is probably the gasket.

11-24-2012, 03:28 PM	#4
H. L. Chauvin Senior Member Join Date: May 2010 Posts: 4,179	Re: Blown head gasket??? Hope you did not crack the head or the block by adding cold water to an overheated head or block.

11-24-2012, 08:24 PM	#7
JtownJoe Senior Member Join Date: May 2010 Location: Johnstown, PA Posts: 342	Re: Blown head gasket??? Did the 3 torque sequence (on assembly, after warm up & after few hundred mi.) when assembled in 08' but haven't touched it since, just puzzles me how I get warm engine comp. readings of 100# on all 4 but get 2 plugs wet with coolant & losing coolant out the exhaust. I guess I'll find out when I get this head off!

11-24-2012, 09:14 PM	#8
hotrodderhaag Senior Member Join Date: Sep 2012 Location: Mooresville Nc Posts: 137	Re: Blown head gasket??? Sounds like a crack in the head or block., Do a leak down test also