I have already notice with the C43 that a nice cool day will change the way my car feels and responds a great deal. Anyone here have any luck running a colder thermostat? If so what brands, from where and how much? Also, if anyone has had a bad experience doing this mod, please post up. The hot season will be back soon and I would really like to keep the cool air performance! I am already talking with another member about a therm. hes running on his CLK500 but im not sure it will bolt up to our 4.3 M113?

I believe the C36 guys are doing this... PM Jumph4x I think he had a post about this a while ago.

Buffyclk500 just sent me some very nice pictures of a 72c thermo that works for our cars! (M113 NA) I am awaiting his approval to post the pictures, since his friends shop makes them. The price isn't half bad either.

Thanks to Buffyclk500 for sending me the pricing and pictures of this AB-Racing theromstat for the C43. Its $100 and around $5 for shipping, he is saying it really helped out in FL where is located and its still around 80 degrees F. outside there.

If I remember correctly 72c is what the C36 guys were using as well... I do not plan on doing this mod as I live in Oregon and it isn't very hot here often but this might be a worth while mod if you live in California or TEXAS for example.

Yeah, you should see the difference between a cool 55F. day and a 95F. day... Pretty depressing. Not to mention, watching the temp climb when your in bumper to bumper traffic in either Dallas or LA, with the AC blasting... Last year in my E320 the dash gauge would read 110F. in traffic at Noon here in Dallas!

Jumph4x talks about it in here

https://mbworld.org/forums/c36-amg-c...-1996-c36.html

i think i will be doing soon, before the cali heat comes around

i have a pte modified 180 tstat in my 32. this is a decent mod but only allows the flow of coolant to circulate sooner than the 195 tstat. once the engine heats up to operating themp the tstat becomes irrevelent. the difference you are feeling on a cool day vs a hot day is the denser air being ingested into the engine not the colder fluids. cold dense air is what makes the power the coolant is to remove the heat from the block by absorbing it.
its a mod worth doing if your trying to keep the engine temps at a reasonable level in hot summer but you could remove it completely and get the same results

this mod only works in the summer and constantly without any t-stat in hot climate countries?
original Wahler t-stats come as 87C degrees celcius.
are you modding with lower degrees C on these t-stats?

if an engine is way too cool, like a worn t-stat it sux more gas and the engine might wear more IIRC?

The one listed here is a 72c stat and I would like to know if the gas mileage will be affected?

once the engine heats up to its normal operating temp the tsat has no affect on the car or its operation. for example.. 70* day. car starts and tstat opens at 175*
then the car engine heats up to 190* thats operating temp of the engine. tstat no longer has any affect. the ability of the coolant to remain at a certain temp is related to the mixture, the amount of coolant flowing thru the engine,ie large radiator and remote tanks, and the speed of the fluid flowing. to slo it wont cool to fast not enough time to absorb heat. then add fans to aid in the cooling of the fluids.
a lower opening tstat wont keep the fluid temps at that temp. merely allows the fluid to pass thru the radiator sooner for cooling
now remember that m/b engines have close tolerences. the temps reached are important in the expansion of the piston to the piston wall as the block and internals heat up. to cool and the clearances change to hot same thing

wow! very very bad info on here , look man with a lower temp thermostat the car will run cooler all the time. The thermo determines what temp the car will run at! period. a 160 thermo will keep the engine at 160 while your on the highway. a 180 will stay at 180 also while on the highway , when ur idling it will stay close to 180 also , that is what the engine fan is for