M6x e30 - More cooling power?

[E30335i]

If you do a hood vent, it’s a minimum 20 degree difference.


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[pondhopper]

Is the radiator getting enough airflow? You may want to look at creating/installing rad shrouds to direct as much clean airflow thru the rad face as possible.

I’ve seen a few race cars were this was done (trial and error) with good results. ( I love laser temp guns. So easy to gather good data). Is your temp gauge accurate?

Always hard when they sit in pregrid but as soon as they moved, needle dropped. Should be the same with a street car.

Other thoughts in no order- my speciality...
Is your water pump belt tight enough? Did you test your thermo? Is your WP impeller in good shape? Have you flushed the block /rad? Rad pressure is good? System well bled? I see that many E36 guys are going with hood vents. . . . Which I find totally cool. No pun intended.
Good Luck cause it looks to be a bloody long hot summer....

[delamaize]

I'm running a Mishimoto Z3M radiator, with a Spal 16" pusher. I'm running a M60B40, OBD1 obviously, Stock M60 thermostat, stock M60 Water pump, and I have the heater hooked up. I don't have AC. I have my Spal fan on a switch in the cab, because when I wired everything up, I couldn't get a strait answer on what temp the fan should kick on at.

Mine stays pretty rock solid at half 80% of the time. The other 20% is usually in heavy traffic, or lots of time in 2nd gear. If I catch the temp going up before it gets half way between the half and 3/4 mark, usually the Pusher is enough to bring it back down. IF that doesn't work, then all I gotta do is kick the heater on for a bit. Once I get back down to half. I usually leave the Pusher on, until I get out of traffic.

I have exeprenced what you're described before, and my issue was a air bubble in the system still. Once I worked that out, everything was good.

[Supadave]

If it was me, I would start with getting a fan with a high CFM. If that didn't work, I would look into getting a bigger radiator.

[strang3majik]

I have had my m62b44 in an e30 for going on 4 years...just last year I swapped to a new shell, and when I did, I notched the frame and added AC.

AC works great...car always runs cool when driving in normal conditions...occasional spirited driving (between 3/8 and 1/2)...however...

If I sit still with the AC on for more than a couple minutes, it will start creeping up toward 3/4...also, I recently started AutoX'ing this car...and after two or so runs it will be up to 3/4...if I let it sit and run, it will cool itself down. It did the same at AutoX when in the last shell.

I have been wanting to do a track day, but honestly don't trust it. Also...when sitting in traffic in the Florida heat (when you need AC the most) I have to turn it off.


I have an OBD1 converted m62b44 running an m60 water pump, m70 thermostat, Mishimoto Z3M radiator, stock aux fan, running full time on high speed.


There is no room to fit a fan between the engine and radiator...perhaps two tiny ones, but not sure they'd help more than they would restrict. The stock Aux fan works better than the 16" SPAL I used to have...loud as hell...but not sure if there is something stronger.

My car is going for paint soon...so I even considered some type of hood vent...but not sure if it would help.


Sorry for the book...interested in your recommendations.



TLDR: My m62 runs hot after autox or with ac in traffic...HELP! lol



Pic of the car for reference.