Today I drove the Stude around. It was in the eighties so I turned on the AC. It blew cold air quickly but soon the belt was slipping so I'll have to get in there and tighten the belt. I found that a couple of places I asked my Indie to trim for more room for the engine to dance around have not been opened up. I noticed something hitting when I backed up today.

Fun driving it though! I always get to chat with some old fart about it.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Today I took it out. Went to the drugstore and the park with the GC and Children. I also took it out to a sort of bypass road which is divided. I took it up to 85 mph and held it there for a couple of miles. The temp got up to 200F. When I took it back down to more normal speeds the temp came down to bout 190. Cruising at 70 was very comfy without too much noise. When I get door panels, headliner and rugs in it it should be very quiet.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Excellent! Do you have any Water Wetter in it? I've found that to be helpful in a car that runs on the hot side. Or MXFrank can build you a slick radiator if it proves to be an "issue".

Dan

La Salle grill? Is there room for a scoop to direct air from under the bumper to the radiator?

I didn't realize you had a Coupe Express crew cab

Sixto
83 300SD can be yours
98 E320 wagon

I think its likely the restricted grill openings of the 39. Once the speed is back to 70 it comes right down. 200 under a load is not unusual I don't think. OTOH the rad is a stock mb one from my parts car so it could be on its last legs as far as that goes!

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I could add a scoop but really I don't need to go 85 mph. 70 will probably be plenty.

I didn't take them all at the same time. (silly sixto).

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

You actually look to have more grill area that our thirty nine Buick. Ours is on the original rad or a long ago original type replacement. In any event the cooling demand with the much more powerful 327 under the hood is seemingly easy met.

Yet there is a problem. The underhood temperatures are far higher than I like created by a lack of enough air flow through the engine compartment. The radiator would see even more increased efficiency if I had some louvers punched into the inner fenders. When I open one side of the hood after a good run there is just too much retained hot air in there. Indicating the lack of enough air flow through the engine compartment.

I have also always thought at high speed engine cooling is more influenced by the natural air flow through the radiator more than fan effect. So any change occurring in the engine compartment should not reduce air flow volume ability. It actually increases the air pressure enabling better air flow through the radiator and engine compartment with a well fitting shroud.


I think the 327 engine in place of the straight eight in our car does exactly that. Impairs the flow through and the engine compartment gets pretty hot as a result. Not hot enough to damage the paint on the hood but it should be lower.

Thanks for the comments Barry. Of course in my car I can remove the side panels of the hood and run that way if I like. I imagine you can too if you want. There also was a reason the hot rodders used to cut louvers everywhere. (Get that heat out!)

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Only as a test if you seem to have added too much obstruction to the airflow. The original engine in your vehicle probably was a lot smaller physically. Plus I did not think It was as likely to be the problem with a five cylinder 300d in line engine change for a smaller six cylinder in line change. Unless the obstructing mass of the 300d was a lot larger.


The designs of the time did narrow up that compartment a lot on many brands. I really did not know to post that information or not. The same applied to your too low front end. I assumed your front end kit did not have the dropped spindals. Plus you knew that. I am well aware you know a lot.

Barry - another guess (and it IS a guess) is that the old engines had a much lower compression ratio and therefore made less heat per unit of displacement. The fuel simply wasn't burned as efficiently. So now Tom has a pretty efficient engine in a bay made for a not very efficient engine and with appropriate air thru-flow for the old engine so there might be lots of compounded issues based on the old/newer engine situation.

Like I said - it's a guess.

Dan

I appreciate all the thoughtful comments.

I am using the actual mb radiator and oil cooler. Together they occupy the space of the original stude radiator which weighed about 60# (unbelievable). But I did not really ever mean to imply that the car is running too hot.

Actually I thought it was all about acting right. While with all the power this and that I do believe the mb engine restricts the flow more than the stude but the fan must be twice as powerful. If it proves to be a problem, I can add a scoop on the bottom or get a rad with more tubes.

I doubt I'll want to run faster than 75 though and it seems to run about the right temp at that speed. About 190f.

I drove up to Kentland today with the Mrs to a little car show there. We took the VW though instead of the Stude as I am not sufficiently confident of it yet.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Today I looked at my turn signals in front. Pitiful little needle dick things. Are some folks using those 5" diameter fog lamps for turn signals? How is that? i want to be seen for sure.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I know some of the street rod guys put an LED in the headlamp bucket but I suppose that eliminates sealed beams. I wonder if you can buy a sealed beam replacement/turn signal combo already made up? Worth a look.

I went surfing and here's a link - if they'll let me post it. Anyhow, I Googled for "sealed beam conversion lamps with turn signal" and if the link is allowed it showed 7" replacements, hi and lo beam, with a built-in LED turn signal. https://www.streetrodhq.com/dept/Lights/cat/Headlights.html

Dan

Bettie top-of-fender turn signals? Semaphores?

I see some CEs with era fog lights on the bumper that could be for turn signals. What are the needle dick things you have now?

Sixto
83 300SD can be yours
98 E320 wagon

I don't have sealed beams. I could have gotten a headlight bulb with a built in turn signal. I am told they aren't very effective. The ones I have are not very effective either....just too small. they are mounted out on the ends of the bumper and are about 1" diameter.

I hate to break up the clean lines with a top of fender mounted light, though they are very effective visually for...well, visibility.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.