I have a turbo'd B16, and it keeps losing water from the radiator into the expansion tank, im using the stanard 1.1bar rad cap.....would a higher pressured one help, or will i just blow the rad?

thanks for any help

 

Does nobody have any ideas?? only thing i can think of is that i have a leak or bad seal somewhere in the system, or my headgasket may be going.......i also made the mistake of using OEM honda headbolts rather than some ARP ones. Could the have stretched already after say 800 miles?

 

Are you actually losing coolant? It is normal for the coolant to flow in and out of the reservoir tank as it expands and contracts.

 

Yes its coming out of the top of the expansion tank, and spraying all round the left hand side of my engine bay. My freinds turbo'd ITR is also doing the same?

 

Any ideas anyone?
Im interested to hear how other peoples turbo'd b16/8's etc run?? How often do you fill up your coolant system/radiator????

 

Anyone????? Im well confused !

I fitted a spoon 1.35bar rad cap and im still having the same problem.

Will i need a diff rad?

 

Only thing I can think of is that your headgasket is going bad...
I never had any cooling problems with my B16 Turbo...

This is what I think is happening... You're headgasket may be slightly leaking, introducing combustion pressure into the cooling system, increasing the pressure beyond the rated cap, and causing the excess pressurized coolant to enter the overflow tank.
Can you see any bubbles in the overflow tank or radiator with the cap off?
What about an oily film on the surface of the coolant? Look in the radiator with the cap off & a flashlight.

Best bet is to do a compression test then a leak-down test to determine if in-fact you are losing pressure into the cooling system...

Good luck!

 

yeh, i also considered the headgasket goin, plus is doesnt help that i used OEM headbolts rather than some ARP's.

I will do a leak-down test and compression test.