What are the chances of blowing a headgasket with a 1.3 bar radiator cap? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

chokudoriS13 · 08-09-2003, 02:51 PM

After my adventures with the cap here:http://www.zilvia.net/f/showthread.p...threadid=34081,

I want to know if the head gasket is at a high risk for blowing when using the 1.3 bar cap. My car has 194k on it, but runs quite strong. I know that the hoses would be at risk for blowing now (since the water pump will be sealed well), but I'm very worried about the headgasket. So, what are the chances of the head gasket actually going kaput?

DuffMan · 08-09-2003, 04:01 PM

How much pressure do you think is in the engine?

Hint: it's a lot more than 1.3 bar

chokudoriS13 · 08-09-2003, 04:13 PM

But the gasket is a part of the cooling system. I'm trying to find out if a gasket with 194k on it can take the increase in pressure brought on by the 1.3 bar cap. Obviously the water pump seal could not, and I'm rectifying that now. The hoses seem to be in good condition, so they may hold. The headgasket scares me, because I don't feel like doing a tear-down and rebuild, nor do I have the time for one. However, I do want to take advantage of the better cooling the cap will provide.

cdlong · 08-10-2003, 04:27 PM

to be a little more specefic than duff man, 1.3 bar is like 20 PSI, max pressure inside the cylinder is something like 3000 PSI. you have nothing to worry about there. if anything, you'll blow coolant hoses or a hole in a weak spot in your radiator.

08-09-2003, 02:51 PM	#1
chokudoriS13 Zilvia FREAK! Join Date: Oct 2002 Location: Los Angeles, CA Age: 44 Posts: 1,022 Trader Rating: (0) Feedback Score: 0 reviews	What are the chances of blowing a headgasket with a 1.3 bar radiator cap? After my adventures with the cap here:http://www.zilvia.net/f/showthread.p...threadid=34081, I want to know if the head gasket is at a high risk for blowing when using the 1.3 bar cap. My car has 194k on it, but runs quite strong. I know that the hoses would be at risk for blowing now (since the water pump will be sealed well), but I'm very worried about the headgasket. So, what are the chances of the head gasket actually going kaput? __________________ S13/86/Miatas/DR30/MX83/E36 M3/S60R/E30 M3 -gone! Now: Porsche 993/MK7 GTI

08-09-2003, 04:13 PM	#3
chokudoriS13 Zilvia FREAK! Join Date: Oct 2002 Location: Los Angeles, CA Age: 44 Posts: 1,022 Trader Rating: (0) Feedback Score: 0 reviews	But the gasket is a part of the cooling system. I'm trying to find out if a gasket with 194k on it can take the increase in pressure brought on by the 1.3 bar cap. Obviously the water pump seal could not, and I'm rectifying that now. The hoses seem to be in good condition, so they may hold. The headgasket scares me, because I don't feel like doing a tear-down and rebuild, nor do I have the time for one. However, I do want to take advantage of the better cooling the cap will provide. __________________ S13/86/Miatas/DR30/MX83/E36 M3/S60R/E30 M3 -gone! Now: Porsche 993/MK7 GTI

08-10-2003, 04:27 PM	#4
cdlong Nissanaholic! Join Date: Jun 2003 Location: Colorado Springs Age: 44 Posts: 1,865 Trader Rating: (0) Rides Gallery: cdlong Feedback Score: 0 reviews	to be a little more specefic than duff man, 1.3 bar is like 20 PSI, max pressure inside the cylinder is something like 3000 PSI. you have nothing to worry about there. if anything, you'll blow coolant hoses or a hole in a weak spot in your radiator. __________________

08-09-2003, 04:01 PM	#2
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	How much pressure do you think is in the engine? Hint: it's a lot more than 1.3 bar