Re: Help! doing the 4.0 head swap on a 258!
 

Harris Family wrote:
> The crankshaft can go to 0
> degrees twice in a complete cycle and when it is at 0 degreees both times
> the valves on number 1and 6 are closed.

If not, the cam timing is wrong !!!!!!

Re: Help! doing the 4.0 head swap on a 258!
 

no

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:TGBSc.18757$cK.12329@newsread2.news.pas.earth link.net...
>
>
> Harris Family wrote:
>
> > Quite simply, Pull the spark plug from #1 and feel the air rush out as
you
> > turn the crank to the 0degree mark. The air rush is the compression
stroke
> > bringing you to TDC.
> >
>
> This only works when the cam timing is correct.....and isnt that what
> were trying to find out ????

Re: Help! doing the 4.0 head swap on a 258!
 

no

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:TGBSc.18757$cK.12329@newsread2.news.pas.earth link.net...
>
>
> Harris Family wrote:
>
> > Quite simply, Pull the spark plug from #1 and feel the air rush out as
you
> > turn the crank to the 0degree mark. The air rush is the compression
stroke
> > bringing you to TDC.
> >
>
> This only works when the cam timing is correct.....and isnt that what
> were trying to find out ????

Re: Help! doing the 4.0 head swap on a 258!
 

no

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:TGBSc.18757$cK.12329@newsread2.news.pas.earth link.net...
>
>
> Harris Family wrote:
>
> > Quite simply, Pull the spark plug from #1 and feel the air rush out as
you
> > turn the crank to the 0degree mark. The air rush is the compression
stroke
> > bringing you to TDC.
> >
>
> This only works when the cam timing is correct.....and isnt that what
> were trying to find out ????

Re: Help! doing the 4.0 head swap on a 258!
 

no

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:TGBSc.18757$cK.12329@newsread2.news.pas.earth link.net...
>
>
> Harris Family wrote:
>
> > Quite simply, Pull the spark plug from #1 and feel the air rush out as
you
> > turn the crank to the 0degree mark. The air rush is the compression
stroke
> > bringing you to TDC.
> >
>
> This only works when the cam timing is correct.....and isnt that what
> were trying to find out ????

Re: Help! doing the 4.0 head swap on a 258!
 

Ageed

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:DJBSc.18762$cK.2254@newsread2.news.pas.earthl ink.net...
>
>
> Harris Family wrote:
> > The crankshaft can go to 0
> > degrees twice in a complete cycle and when it is at 0 degreees both
times
> > the valves on number 1and 6 are closed.
>
> If not, the cam timing is wrong !!!!!!

Re: Help! doing the 4.0 head swap on a 258!
 

Ageed

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:DJBSc.18762$cK.2254@newsread2.news.pas.earthl ink.net...
>
>
> Harris Family wrote:
> > The crankshaft can go to 0
> > degrees twice in a complete cycle and when it is at 0 degreees both
times
> > the valves on number 1and 6 are closed.
>
> If not, the cam timing is wrong !!!!!!

Re: Help! doing the 4.0 head swap on a 258!
 

Ageed

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:DJBSc.18762$cK.2254@newsread2.news.pas.earthl ink.net...
>
>
> Harris Family wrote:
> > The crankshaft can go to 0
> > degrees twice in a complete cycle and when it is at 0 degreees both
times
> > the valves on number 1and 6 are closed.
>
> If not, the cam timing is wrong !!!!!!

Re: Help! doing the 4.0 head swap on a 258!
 

Ageed

"JohanB" <johanberkhoff.spam@earthlink.net> wrote in message
news:DJBSc.18762$cK.2254@newsread2.news.pas.earthl ink.net...
>
>
> Harris Family wrote:
> > The crankshaft can go to 0
> > degrees twice in a complete cycle and when it is at 0 degreees both
times
> > the valves on number 1and 6 are closed.
>
> If not, the cam timing is wrong !!!!!!

Re: Help! doing the 4.0 head swap on a 258!
 

"CRWLR" <beerman@yahoo.com> wrote in message
news:10hkpkchlog5k92@corp.supernews.com...
> Spin the crank one full rotation.
>
> the crank goes around twice for every rotation of the cam, so the crank
can
> be at the top on one rotation, and the valves are in transition between
> exhaust open and intake open. You would have troubles putting the pushrods
> in if this were the case.
>
> Having said that, the rockers and pushrods on the 4.0 could easily be
> different than on the 4.2.

4.0l rods are 1mm shorter, but that's not enough for my problem.