hot exhaust pipe and poor power

[Clem Clement]

The huckster we had been working on finally started. Lots of backfiring. The car has been sitting for 3 months with gas in the carb. We reset the timing using the Nurex special tool. After getting a fairly good hi idle, the exhaust pipe just aft of the exhaust manifold became cherry red. If we reduced the idle some the temp went down some. We retimed the engine to no avail. Also the motor had no power and a very slow acceleration. The radiator was fill.

It started poorly but idled OK.
We decided the carb, which had been rebuilt 2 years ago, had collected water and junk in it and removed the carb for rebuild which we will do later.

Any other ideas?

[jax55]

Carb may be part of the problem, sounds like it is running very lean. That would certainly cause lack of power and a too hot exhaust. Report back after the carb is rebuilt and how it runs now.

[Tom Wesenberg]

Late timing

[Russ/40]

Or more commonly called too retarded.

[edmondclinton]

Yup, too retarded.

[eagle]

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Sounds like timing but could possibly be intake leak.

[Brentwood Bob]

plugged exhaust, loose manifold.
bob

[Fred K-OR]

Due to the fact it was sitting for 3 months, mouse nest in the exhaust??? Just a WAG.

[George Miller]

Late timing

[heneste]

Is it possible that the car has a 'B' timing gear cover? If so, the timing pin may not be recessed in the block when the car is at top dead center.

[Quigley1930]

Late timing resulting from early beer

[Tinker]

Back firing through the exhaust is a typically a over fuel situation. Left over fuel igniting in the exhaust vs popping out the carb. Timing makes sense. But maybe not...

[fiddlybits]

Late timing. (Possibly too rich as well)
Cherry red because fuel still burning in manifold.
ignite sooner or less fuel to put flame back in cylinder.

[tbirdtbird]

late timing late timing late timing
classic case if there ever was one.

i have only heard of the Nurex method and never seen it. It obviously doesn't work.
Fix it before you warp the daylights out of the manifold and burn the valves

[C26Pinelake]

Originally Posted by tbirdtbird

late timing late timing late timing
classic case if there ever was one.

i have only heard of the Nurex method and never seen it. It obviously doesn't work.
Fix it before you warp the daylights out of the manifold and burn the valves

Great advice, so from all the experts you know the problem. ( Nurex being one of them ) !

[redmodelt]

Generally I have found that a lean mixture and not advancing the timing makes the manifold glow red. An overly lean mixture does not have any extra gas to help cool the valves so all the mixture is burnt causing the manifold to glow.

[Big hammer]

Remove exhaust pipe/muffler/tail pipe---and see a two foot flame late timing

[Patrick L.]

Sounds like either a plugged exhaust or not enough ignition advance [ later timing].

[George Miller]

Late timing

[Purdy Swoft]

A classic case as Tbird says. Moved the points cam and introduced clockwise backlash. Points gap is probably also too close. I also think that the Nurex method slightly retards to help get by with V8 points .