need advice /ideas(1962 valiant auto tranny)

just swapped a 50k 1965 225 for a 170 motor

problem-- 225 does not idle smoothly or accelerate smoothly-- intermitant misses

I have adjusted valve 2x-- .010 intake .020 exhaust running-

doubled checked firing order & plug wires-- they are correct 153624

swapped carbs to little or no effect

plugs are autolite 65's & are clean (almost too clean- too hot-heat range?)

petronix dist--

vacuum gauge holds steady but at approx 15

my next step is to do a compression check

I sprayed carb cleaner all over & found no leaks(also misted the chambers with water & tranny fluid)

I'm using the carter carb

auto tranny -which seems to shift ok

open to suggestions/ ideas

I get 15" vacuum too when T-ed into the PCV hose at 600rpm, so that's sounds oki.


What's the spark plug wire resistance????

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

don't know -they are fairly new & worked fine on the 170 I just pulled

PCV system?

Carb calibrated for PCV and there isn't a PCV or
Carb calibrated for no PCV and there is a PCV...............

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Worn timing chain????

If the chain were to slip one tooth, would that give those symptoms?

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ifyoubegintothinkyou'relosingcontrol...it'salreadygone

In my experience, any timing chain slippage, even one tooth renders the engine inoperable for all practical purposes. Sometimes they will start and run but will not have enough power to pull themselves out of their own tracks.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.