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Unread 12-21-2009, 04:30 PM   #1
afgd1
Registered User
1984 CJ7 
 
Join Date: Apr 2009
Location: durango co
Posts: 200
!!! head gasket blown help!!!!!!!

other day blew head gasket crap! was running great too now what new engine or pray its not hurt any body have a motor? well take a part to night hope head is okay help what to
okay so got engine apart guess whatno # 2 piston its gone well any body got an engine what year can i go up to with out to many problems !!!!


Last edited by afgd1; 12-27-2009 at 03:15 PM.. Reason: need motor
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Unread 12-22-2009, 07:59 AM   #2
JeepHammer
Running On Empty...
1973 CJ5 
 
Join Date: Aug 2007
Location: South West Indiana
Posts: 9,952
Head gaskets need a reason to give way.

How long has the 'Coolant' been in without flush and replacment?
Coolant goes acidic when you leave it in too long and will compromised the head gasket, along with things like water pump, thermostat, radiator.

Have you overheated the vehicle lately?
Overheat will expand the head bolts to the point the gasket can fail and will progressively will get worse.

Is your distributor set in the correct position?
One tooth forward will fire two cylinders at once in the firing order, and the second cylinder will fire 90 degrees too soon, hammering the head gasket out.
This takes time, you can run MONTHS with an advanced distributor before this happens...

If you have a HEI distributor, many of them are WAY too far advanced when you are under load, and that will hammer a head gasket out over time.

Some times you have those old head gaskets, and they just rot out after 25+ years of abuse!
I've seen the steel shim gaskets rust out,
The fiber gaskets rot out,

The only one that doesn't give up easily is Fel-Pro 'Blue' gaskets with the stainless steel 'O' ring at the cylinder.
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Unread 12-23-2009, 07:34 AM   #3
afgd1
Registered User
1984 CJ7 
 
Join Date: Apr 2009
Location: durango co
Posts: 200
head gasket

Quote:
Originally Posted by JeepHammer View Post
Head gaskets need a reason to give way.

How long has the 'Coolant' been in without flush and replacment?
Coolant goes acidic when you leave it in too long and will compromised the head gasket, along with things like water pump, thermostat, radiator.

Have you overheated the vehicle lately?
Overheat will expand the head bolts to the point the gasket can fail and will progressively will get worse.

Is your distributor set in the correct position?
One tooth forward will fire two cylinders at once in the firing order, and the second cylinder will fire 90 degrees too soon, hammering the head gasket out.
This takes time, you can run MONTHS with an advanced distributor before this happens...

If you have a HEI distributor, many of them are WAY too far advanced when you are under load, and that will hammer a head gasket out over time.

Some times you have those old head gaskets, and they just rot out after 25+ years of abuse!
I've seen the steel shim gaskets rust out,
The fiber gaskets rot out,

The only one that doesn't give up easily is Fel-Pro 'Blue' gaskets with the stainless steel 'O' ring at the cylinder.
thanks for info when we flushed rad and system put new pump rad and thremostat one odd thing is thermostat was 165 oem is 195 put in 195 2 weeks later head gasket went but gauge alwasy was at 165 when old one and 195 when new never got hot
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