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Thermostat Housings; learn me the differences
Posted: Fri Jul 01, 2011 10:41 am
by Peter Florance
A version or non A
It appears that A are used on newer M30's and I believe the thermostats are different.
What are the differences?
Thanks!
Posted: Sun Jul 03, 2011 6:54 pm
by Blaise
Peter:
I took some photos of both styles here:
The thermostat on the right is the later M30B34
https://picasaweb.google.com/1030509870 ... -6eEsv2STA
The main difference is the angle of the lower radiator hose exit to go around the later distributor.
The motor in the photos is the one I am building for my car.
Re: Thermostat Housings; learn me the differences
Posted: Sun Aug 14, 2011 12:54 pm
by Robert Bondi
Peter Florance wrote:A version or non A
It appears that A are used on newer M30's and I believe the thermostats are different.
What are the differences?
Thanks!
I also think the t-stat housings are a little different internally for the later engines. I previously attempted to use a new housing with my old t-stat. It all fit together fine, but when running the car, the t-stat would never open. Upon inspection of the new and old housing side-by-side, the new version has a much higher, raised, boss-like annular seat inside that the t-stat sits against.
I was able to carefully grind down that inner seat and make it work normally, but just getting a newer t-stat would be simpler looking back.