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View Full Version : bypassed thermostat,318 runs way better


felixthecat
02-19-2004, 11:06 AM
bypassed the thermost and the car runs so much better!i got all my power back!!!!!it doesn't even heat up past the blue zone!!!!!
look out 325s,four floorin' felix gonna dust ya'!

toffa182
02-19-2004, 11:15 AM
Originally posted by felixthecat
...it doesn't even heat up past the blue zone!!!!!

hmmm, is that healthy for your engine? :|

felixthecat
02-19-2004, 11:22 AM
more engines have died from over heating than over cooling im sure.....it feels like i got a lot of power back,it used to run at 3/4
and i just bought a new thermostat....?

Slowered318
02-19-2004, 12:03 PM
I don't get it...

felixthecat
02-19-2004, 12:08 PM
the car has always ran a little hot (in around 3/4)i bypass the thermostat,bleed the system,let it idle for about 30 mins,and go for a rip.i barely put my foot on the pedal and it goes(its not on cold idle either)i put it to the floor it flies,its like a new engine!explain this somebody???????????ive heard that engines sometimes run there best just before they go?

chromius
02-19-2004, 01:51 PM
Did you bypass the thermostat all together? or did you just replace it with a new one?

Cuz I don't think it is very healthy for the engine to run cold all the time, the bearings will probably wear out much faster, and it may mess up the O2 sensor/cat converter and charcoal canister. It probably feels better because its running richer than normal. For the O2 sensor to work properly it has to be at a minimum of 600 degrees F

I just replaced my thermostat with an 88 degree one and it sits perfectly at the halfway mark on the gauge...just right.

Slowered318
02-19-2004, 02:18 PM
well.. ever since i removed the A/C components and put a new thermostat in.. mine has never exceded the half way mark.. I also bypassed the throttle body heater cause i don't drive it in the winter and that dramatically reduced intake temp. my intake manifold never gets hot... i donno if that's really a good thing but the car seems to have a little more torque after all that stuff.

crazyvadim
02-19-2004, 02:20 PM
Was your thermostat stuck closed and you just decided to remove it?? your overcooling cause the coolant is flowing thru your engine constanly,bad idea.Just pick up a new thermostat,they arent that much money.

crazyvadim
02-19-2004, 02:33 PM
Bad idea bypassing the thermostat in the winter,it may not reach operating temperature in the cold weather and evantually power and gas mileage will reduce but w/e floats your boat,just use a higher Anti Freeze mix atleast.

BMW BMXer
02-19-2004, 02:38 PM
My car never makes it past 1/4 hot.

Well if I am in traffic for like 2hrs then it goes to normal middle op temp.

felixthecat
02-19-2004, 09:16 PM
its always been a hot runner,i have a strange feeling it might have something to do with the injection system....
anybody have a holley or weber manifold for an m10?

BimmerKris
02-19-2004, 09:23 PM
The therostat is there for a reason. When the water is constanly cooling the motor , it will cause massive problems. When you drive your car in the winter without letting it warm up, you can crack the block very easily. Same goes with a low running temp. It will just take longer slowly doing more damage.

The intake it self should never get hot in the first place it doesn;t generate heat at all.

How did you connect the three hoses, that lead to the stat. Did you make a connector of some kind.

marco328is
02-19-2004, 09:29 PM
hey how much did it cost to install a thermostat
the heat in my car suxs
it's always running cold

BimmerKris
02-19-2004, 09:33 PM
stats are cheap and easy to replace

felixthecat
02-20-2004, 02:14 AM
the 3 way one is about 50$,i just capped off the reciclulating hose(the one on the neck right next to the upper rad hose one)and ran a hose right from the lower rad into the water pump

Mystikal
02-20-2004, 02:21 AM
Originally posted by BMW BMXer
My car never makes it past 1/4 hot.

Well if I am in traffic for like 2hrs then it goes to normal middle op temp.

:eek: Buy a higher temp thermostat.

BMW BMXer
02-20-2004, 02:54 AM
How do the thermostat temps work.

My car was from ATL which is crazy hot. Would this explain why it never warms up?

crazyvadim
02-20-2004, 03:23 AM
Originally posted by BMW BMXer
How do the thermostat temps work.

My car was from ATL which is crazy hot. Would this explain why it never warms up?

A thermostat senses engine temp. and controls coolant flow through the radiator.It basically reduces coolant flow when the engine is cold and increases when the engine is hot.When the thermostat is closed,the coolant doesnt circulate through the radiator.....instead it goes around the block,head and intake manifold untill the engine becomes warm opening the thermostat and letting the coolant get to the radiator.

BMW BMXer
02-20-2004, 03:43 AM
No I know how they work. I mean the temperatures. What temperature is for what climate.

crazyvadim
02-20-2004, 04:00 AM
Originally posted by BMW BMXer
No I know how they work. I mean the temperatures. What temperature is for what climate.

You lost me dude...:huh?:

felixthecat
02-20-2004, 05:54 AM
theres 2 different ones, 160 and 180 open temperature

crazyvadim
02-20-2004, 06:24 AM
Originally posted by felixthecat
theres 2 different ones, 160 and 180 open temperature

Actually i see alot of 180 or 195 but newer cars have higher ratings.

felixthecat
02-20-2004, 07:56 AM
when i went to buy mine there was 2 choices ,160 or 180 i guess thats it for the m10......

BMW BMXer
02-20-2004, 02:02 PM
Ya which temp thermostat is better for Canadian weather?

chromius
02-20-2004, 02:16 PM
Originally posted by BMW BMXer
Ya which temp thermostat is better for Canadian weather?

I've got an 88 degree C thermostat, and it gets the car up to operating temp within 5-10min in the coldest of weather, and keeps it perfectly at the halfway mark on the guage.