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Split intake 2 Attachment(s)
I pulled my car out of the basement yesterday to get it ready for some upcoming shows. I popped the hood and this is what I found.
Should I be concerned or is this just a failed 70 year old intake. it is a early intake on a 8ba. Thank you. |
Re: Split intake My question would be what caused it?
Intakes don't just crack from sitting, did you notice any performance issues before you put it away in storage? |
Re: Split intake Ralph asked a good question. Seems odd that it would crack like that.
Wonder if intake was "over torqued"? Remove the intake. Drill a 3/16 in hole at the end of each crack. "V" the cracks with a steel cutting tool, not a grinding wheel. TIG weld the cracks, grind smooth, finish and polish. As a last resort JB Weld would also work. |
Re: Split intake It's been several months since I last drove it. I have started it a couple times since parked. I did notice the last time I started it felt like it was loading up a little.
Anybody know what that center port on the intake is for? |
Re: Split intake Some of the manifolds in around the 1935/36 time frame (aluminum) were kind of thin in the area that was heated by exhaust. I don't know what year that one is but it damn sure cracked out. Did it have pennies in the ports?
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Re: Split intake Just a thought, but it looks like a water feeze crack. But if I'm not mistaken that is the heat cross over area. So is the heat cross over plugged? Starting and not fully warming it up caused a condition for water to build up and freeze?
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Re: Split intake I've seen them bust out there before.Heat riser area.Might as well replace it
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Re: Split intake Quote:
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Re: Split intake That crack is the result of heat from the exhaust crossover. The aluminum was on the verge of melting. Excess heat is caused by retarded timing or a lean fuel mixture. If you have the original vacuum only Load-O-Matic distributor, the diaphragm may be blown. If the carb is not original, the Load-O-Matic will not give the right advance.
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Re: Split intake Heat stress crack from crossover. If it were me and I just wanted to drive it, I would smear heat resistant epoxy into the crack until I could replace it.
It is possible that there may be cracks into the intake ports, but I doubt it. There are no water jackets so if there is a leak you would see it on the plugs after a while but I wouldn't be concerned about anything else other than cosmetics. |
Re: Split intake Pulled the intake off last night. The heat ports where blocked with off with cuts of tin. Opposite side of crack the tin only covered 3/4 of the hole.
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Re: Split intake 1 Attachment(s)
I have no idea.....
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Re: Split intake 1 Attachment(s)
Failed old repair?
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Re: Split intake What the? Is that sand/ dirt/ or exhaust rust?
I'm wondering if whoever blocked it off put that in there to dissipate heat? |
Re: Split intake 1 Attachment(s)
Block off plates between intake and gasket. The plate on opposite side of crack did not come.pletely cover hole.
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Re: Split intake Boy, that would be enough for me to tear the engine down and see what else is going on inside.
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Re: Split intake Wow - looks like casting sand to me....
How much dumped into the valley when you took the manifold off? The cracks can be welded up. Contact Mike Kuhn - www.kuhnsautospecialties.com He is one of the few I know that can weld two gumwrappers together and he's really quite reasonable. Also a Barner here... |
Re: Split intake Quote:
Nice Thanks! Lots of casting sand came out of the intake. I think the engine didn't take any. I am going to change the oil and check it |
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