The Stovebolt Site Forums The Shop Area Engine Shop " 3 Core or 4 Core"

Just received the 60 over 235 from the machine shop. It will have the Howard cam, fenton duals all around, etc.. Currently running with the Harrison 2 core radiator,(holding together with gum). In my search, I found most 4 core guys were running v8's. Others were using 3 core. My question is, with this set up, would a new three core cool just fine?, or would a 4 core be better? I worry about the water pump clearence, even with short shaft, or 216 postion water pump. Tech help at Jim Carters, told me that the 3 core measured 1 3/8" out past the bracket, and th 4 core measured 1 3/4" out past the bracket.
O.K., one more question, this 235 is a 60 model, was in my 50 - 3600. Without thinking, I took the flywheel(and balancer) to the shop to get the crank balanced. Afterwards, I realized that this flywheel had the 9 bolt pressure plate, and
10 1/2" clutch(should have remembered, as I had put in a new clutch, thrwt. brng. etc.)in the 3600. Anyway, since this motor is going into my 3100, with the original 3 spd., will the splines on the 3 spd. match the 10 1/2" clutch disc? I'm thinking they will? Now I have to remember which starter is the one I pulled from that motor, I measured the teeth on the balanced flywheel, and looks like 4 teeth per inch, measured the teeth from my 46(216) flytwheel, and looks like 4 teeth per inch. Better stop, I'm writing a book! Thanks in advance!
Bryan

I used the replacement radiator from LMC...best price and am running a/c with the condensor in front of the rad. Have a 6 blade fan on my adaptor plate early water pump (1960 engine)with no overheating problems. Did add a pusher fan for extended periods of idling but haven't needed it.

As for the flywheel....count the teeth...a 168 count is the 12 volt flywheel and requires a 12 volt (red tag) starter. A 139 count will indicate a 6 volt flywheel which will require a 6 volt(black tag) starter which can be run at either 6v or 12 v. The 12 v starter will NOT work on the 6 v. flywheel and vice-versa. Easy way to identify voltage of starters....the 12 volt starter has a bendix drive gear that is about 1" in diameter and the exposed shaft is 1/2". The 6 volt starter drive is appreciably larger...about 1-1/4" gear diameter and the exposed armature shaft is closer to 5/8".

As for your splines...they should match...both my 139 tooth and 168 tooth flywheels are 9 bolt P/Plates...11-1/2" across flats to holes. One was using a 10-1/2" clutch, the other a 9-1/2 with the same pressure plate. I replaced the 10-1/2 with a 9-1/2 as the 10-1/2 extended beyond the pressure plate contact surface. Hope this helps.

Dave

Bryan.. I have pretty much the same setup as you describe and am running a rebuilt standard 2 core stock radiator with no cooling problems. So you may want to think about rebuilding your stock unit. Just remember to use a 7 lb cap so you don'y overwork it. It is still pretty darn close so that is another reason to stay with a stock unit.

I can only add "ditto's" to what Dave says about the clutch info. Will be coming through Springfield on Sunday morning so I'll wave and say Hey.

Thanks Dave, and Thank you Dave! This is exactly the information I needed. I had no idea on the difference between the 6 volt & 12 volt flywheels! And I can sleep now w/o worrying about over heating! Dave, have a safe trip, I'll be waving!.
Bryan

CATMAN,

On a 'off radiator subject'...talk to Howard about cam break-in procedures and read all the info on this site pertaining to same..an ounce of prevention blah blah!

Stuart

Stuart,
You werw reading my mind!