blown head gasket again? or just loose lower intake?

G

Gunnerm1

New Member

Apr 25, 2006

16

1

1

Dec 15, 2007

#1

• Dec 15, 2007

• #1

Need you opinions.
I just finished putting AFR heads on my stang. It was running good for about 200 miles then I noticed that it was running on seven cylinders and had more crankcase pressure than normal. No steam , just pressure. I pulled my plugs and found that cylinder#2 has a trickle of coolant being pushed out when the motor is turned over.
My question is , is this most definitely a head gasket, or could the heads and lower intake need to be re-torque.
Other than the water the engine is running fine.

 

PUNISHER RACING

Active Member

Aug 27, 2007

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FORD CITY, PA.

Dec 16, 2007

#2

• Dec 16, 2007

• #2

run a comp test and check for cylinder leak down, or pressure test rad. to see how bad it gets.

 

91 HATCH

Banned

May 17, 2007

262

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illinois

Dec 17, 2007

#3

• Dec 17, 2007

• #3

i would redo the gaskets and re torque after 1 hour or so of run time is there any oil in the radiator or water in the oil it will look like a chocolate milk shake after enough water or oil mixes ive been there

 

G

Gunnerm1

New Member

Apr 25, 2006

16

1

1

Dec 17, 2007

#4

• Dec 17, 2007

• #4

91 HATCH said:

i would redo the gaskets and re torque after 1 hour or so of run time is there any oil in the radiator or water in the oil it will look like a chocolate milk shake after enough water or oil mixes ive been there

Click to expand...

Im getting air in radiator, but no oil in water or water in oil. Its kinda strange.
I know i installed all gaskets the correct way. I really feel like i cracked the block, due to the crankcase pressure i was getting. I had to install a valve cover evac system, and route my pcv to the intake side of my blower, to cut down on oil leaks.....guess its time to build a 347, its was a stock block , rebuilt right before I bought it, but i have no idea who did it or if they did it right.

here is a pic of the engine bay after I filled in all of the holes and painted it, to bad I cant get it to run as good as it looks....

View attachment 341747

 

91 HATCH

Banned

May 17, 2007

262

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illinois

Dec 17, 2007

#5

• Dec 17, 2007

• #5

did you use thread sealer on the head bolts

 

G

Gunnerm1

New Member

Apr 25, 2006

16

1

1

Dec 17, 2007

#6

• Dec 17, 2007

• #6

91 HATCH said:

did you use thread sealer on the head bolts

Click to expand...

i used thread sealer on the lower bolts but none on the upper. Should I have?
i torqued the all the head bolts to 100 , and intake to 25ish, and it took about 4 times around the sequience to get the lower intake tight

 

Fast63

New Member

Sep 20, 2007

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Dec 19, 2007

#7

• Dec 19, 2007

• #7

no need for sealer on the upper bolts. Pretty sure you don't need to torque the head gaskets to 100ft/lbs, and it is normal to do that many sequences on the intake.

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Dec 19, 2007

#8

• Dec 19, 2007

• #8

100 ft/lbs on the 7/16" head bolts???? Why???????????? You need lube on the upper bolts, whether it be sealent or oil. I use sealent to keep the torque specs the same.