4 replies to this topic

[RazerX]

I am guessing this is electrolysis but whenever i remove my radiator cap there is pressure in the system.  I have never this before on my other miata.  

 

It is a koyo 55 running either straight water, or water and a little water wetter.   My car does not run hot even in 100 days.  

 

Do i get one of those caps with the sacrificial metal?  I always worry it going bounce up and down dent the tops of the cooling tubes.  

 

Or I could do nothing.

[Bench Racer]

 

It is a koyo 55 running either straight water, or water and a little water wetter.   My car does not run hot even in 100 days.  .  

 

What temp does your engine run?

I have a 1.6, 55 Koyo, water/water wetter and the temp didn't get above 185* when ambiant temp at 90*. I installed a Stant 180* (per Sual's post recomendation to others folks), but have not ran to date. Would need to look at notes on what theromstat I was in. Looking to get 195*/205* normal without blocking radiator.

[RazerX]

yes i was running 160F thermostat.  But still looking for ideas why radiator is building pressure 2 weeks after i ran the car. 

[Alberto]

That noticed that once upon a time on the FD.  Went away after a series of cooling system flushes (~6 back to back).  YMMV.

[RazerX]

i have pulled the head so i have to do some flushing anyway....