chance of cylinder head being warped - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jafero · 03-30-2007, 07:24 PM

I need to change head gasket due to over heating issue. Both coolant and oil is mixing. However, my compression readings for all cylinders come out at around 185 psi. This probably means portion of head gasket around water pump is torn.

With this great compression reading, is there a chance that the head is warped and needs to be machined? If not, I want to use the same head and same studs.

BoostedCoupe · 03-30-2007, 09:40 PM

when my car overheated alot it warped the head but the compression was not that bad. this was on a ka the head and head studs where warped. hope that helps.

jafero · 03-30-2007, 10:42 PM

Thanks a lot.
So you overheated your car a lot... I never raised coolant temperature above 97 degree celcius. I just figured that it was overheating as coolant temp went above 90 degree. So my chance of warping my head should be minimal, right?

03-30-2007, 07:24 PM	#1
jafero Leaky Injector Join Date: Jun 2006 Location: NJ Posts: 129 Trader Rating: (0) Feedback Score: 0 reviews	chance of cylinder head being warped I need to change head gasket due to over heating issue. Both coolant and oil is mixing. However, my compression readings for all cylinders come out at around 185 psi. This probably means portion of head gasket around water pump is torn. With this great compression reading, is there a chance that the head is warped and needs to be machined? If not, I want to use the same head and same studs.

03-30-2007, 09:40 PM	#2
BoostedCoupe Zilvia FREAK! Join Date: Nov 2006 Location: South Fulton, TN Age: 34 Posts: 1,043 Trader Rating: (4) Feedback Score: 4 reviews	when my car overheated alot it warped the head but the compression was not that bad. this was on a ka the head and head studs where warped. hope that helps. __________________ 92 vert converted 5speed and other little things

03-30-2007, 10:42 PM	#3
jafero Leaky Injector Join Date: Jun 2006 Location: NJ Posts: 129 Trader Rating: (0) Feedback Score: 0 reviews	Thanks a lot. So you overheated your car a lot... I never raised coolant temperature above 97 degree celcius. I just figured that it was overheating as coolant temp went above 90 degree. So my chance of warping my head should be minimal, right?