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Well I disconnected the pressure regulator at the filter and hooked up a pressure gauge. Turned on the pump and the gauge pulsed between 6-8 lbs. After about 30 seconds the needle went to 0-1. I should be pumping 13-14 lbs at this point.
I took out the check valve again and it seemed a bit scored so I polished it up with some 400, lubed it and put it back. Started the pump again and got the same thing. Took a small hammer and tapped the area around the check valve and it shot up to 13 lbs and held. I put everything back but could not get pressure at the carb again, even after tapping on the pump. Sooooo, I believe my problem may be due to a bad fuel pump that delivering a substantially small amount of fuel to the carb, causing a serious lean condition, leading to overheating. Hey! I'm going to replace the pump and see what happens. Still better than pulling the heads. I still may have to but I have to address the pump at this point. Will be on an underserved vacation (Hilton Head, SC) starting tomorrow so I will not be able to do anything till next week. It's amazing, Roscoe |
G-ddamn, s-o-b, freekin sh-t, motherf--ker, etc, etc, etc...
I'm pulling the heads tonight Roscoe |
I guess something is restricting the flow through the head. Good luck!
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Yeah, I think I have a very tiny leak of exhaust gas into the water jacket from the head gasket.
Roscoe |
Roscoe,
Ya better give Dr. Cranky a cigar......he's been saying that all along! |
John,
Yeah, I know. But I kept finding little 'tickler' problems that could have been related. Anyway, I've got everything off but the heads. Bill K is coming over this evening with his impact wrench and we're going to pull them and see what we can see. Roscoe |
Well, I found some silicon 'worms' in some of the crossover brows in my AFR heads (both sides!). Also a possible leak around the center upper head bolt which is near a water jacket inlet.
The silicon probably came from my original install of the water pump. The last two times I pulled it off (read above thread) I re-installed with good ol permatex. I'm cleaning and brushing and getting ready to re-install everything. If this doesn't work I'm going to suck on my .45 barrel! Roscoe |
Tour too easy on the car.
Roscoe,
Get that car back together and go borrow the trailer from Bill S. and bring that thing up to the Glen next week. You have to show the car who is boss, you have been babying that thing for too long. You must put it on the track and beat the piss out of it. Your car is rebelling against you for treating it like a baby. I used to have a car like that but I slapped it around a few times and it came around. Some cars like to hang around shows and look all pretty and others just like to be beaten up and thrashed. I can tell this is the type you have. You car probably overheard you hemming and hawwing about Watkins Glen and decided to get your attention. You must make immediate plans to go racing and pretty soon your car will start treating you better. BTW that car of mine that was acting up. I gave it a heart transplant and she has be treating me pretty good. I will have to do some slapping around next week just to keep her in line. I hope the info helps you out. Dr. Crankenheimer:LOL: |
Cranky,
Thanks for the technical advice. I'll grab a spare fan belt and run down to the garage and start beating. Will let you know if it works. Roscoe |
Serious reply
Roscoe on page 3 I made a serious suggestion and I am sticking with it ,O ring the heads.
Blown Head gaskets seem to be a common problen with high power small blocks and aluminum heads. RD |
Cranky,
The head gaskets look ok and it looks like it was obstructions by silicone and not gasses in the water jacket. I hear what you're saying about the orings and may take you up on that suggestion. Roscoe |
Roscoe,
I had my heads Aluminum heads cut for the o- ring gaskets and I am glad I did. I don't have those problems. Just a though I have not heard anyoone say anything about your fans. Are you running twin fans, single fan with a clutch, both is it possible that your fan(s) are not performing? Bad clutch fan?? Just another .02 Ferrari Killer Steve Parks |
Steve,
Thanks for the response. I am running a Derale spiral blade fan. The fan runs all the time. I do not suspect the fan because the car idles ok and only overheats when I bring up the rpm. If you saw the amount of silicone I took out of the crossover ports in the heads you would agree with me that it was a water flow blockage. Only time will tell. Roscoe |
Roscoe, I have been watching this thread develop over the past few weeks and someone or another has come up with a solution to every possible heating problem you could have, only for us to find out a day later that it didn't work.
I am very interested in the silicone that you have found in your engine's water passages. How much have you found? Is it all the same color, texture, etc.? Do you think you now have all of it out? You said that it may have come from a water pump installation, how much did you put on the gaskets? Why would the heating problem show up now after having driven the car for so long? I am trying to see if there is something else going on here that no one has thought about. I have a bunch of questions but no answers so the only thing I can do is wish you good luck. Wayne |
Wayne,
On the passenger side I had a piece of silicone that laid in the entire third cylinder eyebrow. http://www.priveye.com/cobra/Head.jpg You can see the eyebrow crossover above. It was about three inches long of blue silicone and as I removed it there was some actually inside the hole about half inch. This is the same silicone I used on the pump. There was no other silicone used in or around the cooling system. On the drivers side we found smaller pieces but in the eyebrow passages of two cylinders, 6 & 7. AFR tells me this is enough to cause overheating of the type I had. I put that water pump on almost two years ago so I don't remember how much I put on only that it was probably too much. You know silicone will accumulate as you tighten down the bolts and the excess gets squeezed out. This can break loose at any time but usually not right away. Do I have it all out? Who knows. I've blown out the heads a couple of times and will do it a few more times before installation. Hopefully by the weekend I'll have it back on the road. Roscoe |
Roscoe-
While you're at it, it might be a good idea to flush out the water passages in the block also. Who knows what might be floating around in there??? Mike |
Mike,
Thanks for the tip. I flushed out the block with a hose when I had the pump off. I did not know then that there was blockage but I did it anyway. Roscoe |
Roscoe,
It appears the you may have found the culprit to your overheating problem. I think we have all learned something here. Go easy on the silicone sealer. Cranky:) BTW , I think I read where mrmustang may show up at the Glen next weekend. Does that mean that if all goes well with the motor we can expect to see Bob at the Glen?%/ |
I was scheduled to go to the Glen but I have a formal family get together that I just cannot bow out of.
By the way, Here is the piece of silicone I got out of one of the heads. http://www.leelanau.com/inland/images/rainbow_pen2.gif Roscoe |
Does Goofy wanna go fish'n?
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