|09-13-2012 07:49 AM|
|Augusto||the nut just bottoms out and can't be adjusted any further, do I need longer push rods or do I have to machine down the head bosses or the rockers?|
|09-12-2012 09:43 PM|
|BOBCRMAN@aol.com||Early ( late sixty-early seventy) 300 use a crimped nut, similar to chevy. That can be used with the guided cast rockers. These adjust just like a chevy.|
|09-12-2012 08:58 PM|
|09-12-2012 08:54 PM|
I don't know about the early 289-302 rockers, this is my first time I deal with Ford engines.
the rockers are cast not stamped like the chevy units.
you mean there's a way to adjust them valves? shims or something?
the truth is I would love having a chevy-like system, adjustable by turning them loose 'til they make noise then tigthen down 1/2 turn, you know what I mean right?
|09-12-2012 08:36 PM|
So that leads me to the question as to whether you used a seat cutter/ grinder before lapping? Lapping alone as a seat restoration process makes the seats too wide and the valve ends up not settling well on the seat. Also, did you restore/replace the guides. When these get loose the valve rather orbits the seat having a hard time setting itself down.
|09-12-2012 06:23 PM|
|BOBCRMAN@aol.com||You did not state the year of your engine. Early 300 six engines use guided cast rockers that can be lashed. Similar to the 289-302 early rockers.|
|09-12-2012 05:43 PM|
Ford 300 Inline 6 valve train problem
I'm having low compression and vaccum reading issues due to the valve train not seating well,
I've made a compression test and it indicates valves not sealing well, I just lapped them so the seats are not the problem.
I belive they are kept open by the lifters.
Is it possible to convert them to adjustable, like the chevy engines?
Can I use chevy rocker arms in them? I6 or V8 pieces?
What is the rocker arm ratio of the I6 Ford engine?
thanks a lot.