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Harry Ferguson Tractors Discussion Forum
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TO 30 exhaust manifold heat

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Don Hooks

10-10-2007 22:10:16




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I have just finished restoring the mechanical parts of my '53 TO 30 and, in fact, discovered that much of the engine was practically new. The two internal "problems" were the 5 psi oil pressure and the worn out valve guides and rocker arm shaft and bushings. After repairing these and replacing the exhaust valves I put everything back together and rebuilt the carburetor. Now everything seems to run well and the valve train is settling in but the exhaust manifold gets very hot just idling (the exhaust paint burned right off). I have a half pint temporary gas tank and I can't get the valves of but one cylinder adjusted before the tank is empty. All the exhaust valves have at least 0.012 lash so tomorrow's test will be to check compression and see if I'm losing combustion gases to the exhaust. If I am, I presume I'll pull the head and lap the valves again. If I am not, what should I look for next? Have I just forgotten how hot the exhaust gets? Could the carb kit have increased the gas flow into and through the engine? Any input will be appreciated.

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Don Hooks

10-14-2007 20:28:56




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
Thanks for the responses! It WAS exhaust paint which is why I was concerned. The compression was OK and I've checked the static timing but haven't found my old timing light yet. The distributor is pretty sloppy so that and possible intake leaks are on my menu this week. The response about adjusting the valves with the gas in the bowl did pull my chain - now I wonder if I am THAT slow or I really am wasting a lot of gas somewhere.

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steveormary

10-13-2007 18:23:03




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
Our Fergies(TE-20 and TO-30)never ran hot like that.

steveormary



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ErnieDD

10-12-2007 19:36:55




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
Our Ferg 30 manifold would glow red hot and shot sparks offin it blowing corn in the silo. Throttle was wide open and on the governer the whole time.

You won't keep regular paint on the exhaust manifold of any tractor worked.



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Jerry/MT

10-11-2007 15:02:46




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
Make sure that you carb settings are not too lean, that you have no air leaks downstream of the carb metering section( throttle shaft seals, connect flange carb to intake manifold and intake manifold to cylinder head joints are the common leakage areas.)
Also make sure that your timing is correct and that the advance is working properly. Too late timing is another potential cause of your problem. I doubt that the wrong valve lash will do that.

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phil(WA)

10-11-2007 14:56:41




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
Just to pull your chain,Don, an old Ferguson salt told me you should be able to adj the valves with what gas is left in the carb bowl!!

Phil(WA)



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gshadel

10-11-2007 08:05:47




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
I agree with Jeff, check yourcarb mixture & set per the manual. If you are talking about regular tractor paint burning off your manifold, yes it will do that immediately. I painted my manifold with hi-temp. manifold paint a few years back, it lasted that Summer, then it started to burn-off also. Also, check your engine timing, that is another thing that can cause overheating.



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Jeff-oh

10-11-2007 05:57:24




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
Sounds like your running too lean a fuel mixture.



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Roger in Iowa

10-11-2007 03:13:36




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
It is normal for the paint to burn off the exhaust manifold.

Roger in Iowa



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ric1

10-10-2007 22:48:50




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 Re: TO 30 exhaust manifold heat in reply to Don Hooks, 10-10-2007 22:10:16  
the gas air mixture is part of the cooling process you have to ajust the carb to spec my dad has a 30 and while he is brush hogging the exhaust manifold will glow red i had one a few years ago and it never ran hot like that hope this helps



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