How Hot Is Too HOT!! Did i Over Heat My Motor?!

kangaboy · Post by **kangaboy** » Fri Aug 29, 2003 1:00 pm

what i did was try to switch out a gen for an alt. i got the new pedestule and everything. so i took off every thing nesessary. carb, gen, gen stand, and the fan off of the gen. well come to find out the alt wouldnt fit in there any way, just because the carb would hit it. i didnt have enough clearence and didnt have enough gaskets to try and space it. now i know that i need some spacers next time i try to put a alt. on a 73' super. anyway i took all that stuff off and put it back on again. not too much that could have gone wrong. i will look in to it again tomarow when i go home. any more ideas and thoughts would be great.
thanks alot

joe

Max Welton · Post by **Max Welton** » Fri Aug 29, 2003 4:09 pm

kangaboy wrote:what i did was try to switch out a gen for an alt. i got the new pedestule and everything. so i took off every thing nesessary. carb, gen, gen stand, and the fan off of the gen. well come to find out the alt wouldnt fit in there any way, just because the carb would hit it. i didnt have enough clearence and didnt have enough gaskets to try and space it. now i know that i need some spacers next time i try to put a alt. on a 73' super. anyway i took all that stuff off and put it back on again. not too much that could have gone wrong. i will look in to it again tomarow when i go home. any more ideas and thoughts would be great.
thanks alot

joe

OK, let's identify some unlikely things.

Since it runs fine until it overheats, the carb is probably not the problem. Actually, make sure the electric choke got reconnected and is working fine. The symptoms don't match, but it is right where you were working.

Since you didn't mention removing the distributor, let's not worry about a change in timing. If it didn't change, it isn't the problem.

You've double-checked that the plug wires are all in the correct places. And if they weren't, it would not run "fine" even before overheating. Can't hurt to recheck, though.

Severe overheating really sounds like a fan problem. Like people who try to limp home after the fan belt breaks. Loss of power, smoke, and that really "hot" smell. Like that.

How did you go about torquing the nut inside the fan? If the fan didn't "seat" on the shaft, it could be slipping. The shaft has 2 flat sides that match the hub of the fan. You might remove the nut and recheck that the fan is properly positioned. While you're there, look for evidence of slippage like shiny metal and/or shavings.

PS: There's another way to get the carburator accelerator linkage to clear the alternator. But let's solve this problem first.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Fri Aug 29, 2003 4:18 pm

Sounds lean to me...Check the fuel pressure, perhaps the pump is dying...Then also double check the timing, and also make sure that you still have an advance curve...sometimes they just die..

what did you do in the engine bay? Chances are if this is something that was not occuring before that you disturbed something and it is not happy now...

kangaboy · Post by **kangaboy** » Tue Sep 02, 2003 3:28 pm

well i got it running enough that i made it back down to school. i think the biggest problem was vapor lock. i had the metal fuel line running on the intake manifold. the manifold was very hot in turn heating up the fuel. once i moved the fuel line on top of the spark wires, it doesnt start to stutter. no more loss of power. still runs hotter than ever though. after about an hour of driving yesterday (constant 65mph) my gen light kicked on like it always does. just to make sure the belt was ok i pulled over and when i opened the deck lid i saw smoke coming out of the oil filler breather. dont know why it is still doing that. anyway i got to school and stopped for a bit to eat about fifteen minutes from my dorm. sat there for about an hour and came back out to leave. well now it was starting to stutter and not have any accel. so i bumbed up the dist. again and made it back just fine. (PS: the dist was messed with after the wreck and before the over heating.) so now i sit wondering if it is running too hot, that if it is ok, or if i need to get it back to normal? i use 10w-30 oil and have the dist. about 10 btdc, i think. it is advanced a bit. single vac. 009. also i cant touch a thing in that engine compartment. pully is burning hot, along with the manifolds. is this ok?

Joe

Max Welton · Post by **Max Welton** » Tue Sep 02, 2003 6:13 pm

Nope. Not OK by a long shot. And you really need to stop driving it till you get this figured out. Loss of power? Smoke? Pully that is "burning hot"? You'll be lucky if the heads haven't warped already. Keep it up and you'll have your very own "engine blow" in the back of your car. And, yes, I AM trying to scare you.

I think this is the first time you've mentioned that the distributor has been touched. Timing that is way off can definitely contribute to overheating.

So we need to know what kind of distrbutor you have. Cause I'm pretty sure you don't have a vacuum advance 009. I believe all 009s were centrifugal-only, no vacuum can at all.

Check out the side of the distributor. There should be some numbers something like this:

http://63.230.74.177/vacdist2.jpg

Note that there are two numbers, one is the Bosch number and the other is the VW number. Think this is an 009? So did I. But I was looking at the wrong number. Actually, this is a 205 and was stock on some early 70s bus engines. It has vacuum advance and retard as well as centrifugal advance and works very well with the stock 34pict3 carb.

http://63.230.74.177/baja/MVC-023F.JPG

So, what distributor do you have?

73fback · Post by **73fback** » Wed Sep 03, 2003 8:25 am

THey way you describe the generator light it makes me think that the backing plate is on incorrectly. It has a small air intake that when properly installed points down. If it points up, you are burning up your generator, and probably at least contributing to the heat problem.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Wed Sep 03, 2003 12:00 pm

Tear it down.

VW_Factor · Post by **VW_Factor** » Wed Sep 03, 2003 12:14 pm

Now, if the fan wasnt seated correctly on the shaft, or more specifically, the hub on the shaft, wouldnt it make a horrible racket when in operation?? I have a fan out on my porch that somehow someway tore up the hub, became off balance, and just plain messed things up.. Everyone tells me that I didnt have it bolted on hard enough.. Well.. I remember putting it together, and I put plenty of "juice" to it, and it was quite difficult to get removed again, to replace the hub and fan.. I dunno.. But it made a horrible noise, and vibration.

Max Welton · Post by **Max Welton** » Wed Sep 03, 2003 1:13 pm

Yeah, hard to miss.

But Jake's right.

kangaboy · Post by **kangaboy** » Thu Sep 04, 2003 11:19 am

the dist i have on right now is the 49 state 009 single vac kind. marc told me along time ago. if you dont know what i am talking about i can get the number to you tomarow. after i got the fuel line off of the manifold, there has been no loss in power at all. the loss of power was due to vapor lock. and about the dist, i think it was supposed to be on 6 degrees atdc. also could the cooling be doing bad because the engine compartment was crumpled, and now it has a few gaps inbetween the tin and the body? and about the gen. it only doesnt work because the brushes are cheap and dont hit the dirty armeture right. it has got alot cooler that it used to be, after it got the fuel line off of the manifold. tell me if you know what i am talking about on the dist.

joe

Max Welton · Post by **Max Welton** » Thu Sep 04, 2003 12:04 pm

kangaboy wrote:... tell me if you know what i am talking about on the dist.

joe

I sure don't. AFAIK no 009 ever included a vacuum advance. It would be nice to know if I am mistaken. What are the numbers on the distributor?

Veepster · Post by **Veepster** » Tue Sep 09, 2003 9:11 pm

are we sure the fan is spinning? I read in the thread that the pulley was VERY hot...if that was only heat transferring up the motor it does not seem likely that the pulley would get that hot.

But if there is something slowing the fan/generator down then the belt would slip and the friction would make it VERY hot!! less air flow more heat!....If you saw that in my first Monster Garage episode, you will know I learned that the hard way!

my suggestion: pull your belt off and spin the generator, it should spin VERY freely. no resistance at all....

Peace...........BartG

kangaboy · Post by **kangaboy** » Wed Sep 10, 2003 10:44 pm

sorry i am slacking. i keep forgetting to get the damn number. but the fan does spin freely. i will take it off tommarow when i get the number but i think it is good. but one thing that could be heating it up is the muffler. when i got in the accident and had the apron put back on the muffler rides right on the apron. so i t is hot as hell. i think that this could have a direct effect with the heat problem. what do you think. if that is so than the only way to fix it is to get a new car. a new body anyway. what do you think about that?

joe

Max Welton · Post by **Max Welton** » Thu Sep 11, 2003 6:10 am

Well, if it's all beat up in the back anyway, maybe you could baja it.

73fback · Post by **73fback** » Thu Sep 11, 2003 6:27 am

So if the apron is that bad, do you have the breast plate tin in place? How about the fresh air hoses, or the holes in the shroud blocked?