8n ford

DANNY KINDER · Feb 10, 2014

have 8n ford bought not running overhauled the works except cam shaft,put together wouldn"t run ,dist gear was sheared pin,fixed that it ran but now with knock,rattles only when warm and notice most when decelerate engine,tore back down miked crank,all was well their rod brg were scratched up some fm I guess mains looked perfect pulled head nothing their,pulled front cover ,looks good except crank pulley wore bad around main seal,but tight ,help help tks Danny

mite-help · Feb 10, 2014

while you have head off, look real close for contact between piston dome/head, result of head being milled too many times. chk wrist pins--good luck

Janicholson · Feb 10, 2014

Knocks that happen in deceleration, or speed changes, are often wrist pin related. Even .001" can make serious noise. The clearanc is usually near zero to .0005". jim

JMOR · Feb 10, 2014

(quoted from post at 19:59:28 02/10/14) have 8n ford bought not running overhauled the works except cam shaft,put together wouldn"t run ,dist gear was sheared pin,fixed that it ran but now with knock,rattles only when warm and notice most when decelerate engine,tore back down miked crank,all was well their rod brg were scratched up some fm I guess mains looked perfect pulled head nothing their,pulled front cover ,looks good except crank pulley wore bad around main seal,but tight ,help help tks Danny

ince you mentioned cam........under power the cam is driven toward the rear by gear pattern, but when coasting, it is driven forward & if the gap between button on front of cam & timing cover is too large, you may hear the two bouncing against one another, especially at low speeds.

Leroy · Feb 10, 2014

Just leaving a lock washer off the distributator can make a knock. Have one tore down now and that was the reason. Might have been a too long a bolt tho.

8n ford

DANNY KINDER

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Janicholson

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Leroy

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