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  #16  
Old 07-21-2011, 11:39 AM
Fordzilla80 Fordzilla80 is offline
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Default Re: Im about to cry.... Is the 4.0 an interference motor?

Quote:
Originally Posted by SpitfireEMT View Post
Not to show my ignorance, but I dont think ohc engine have rocker arms either.
The Toyota 4.7 I rebuilt last year was dohc and it went cam->cap->top of valve stem.
True.

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  #17  
Old 07-21-2011, 05:21 PM
GhostRanger GhostRanger is offline
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Default Re: Im about to cry.... Is the 4.0 an interference motor?

Quote:
Originally Posted by SpitfireEMT View Post
Not to show my ignorance, but I dont think ohc engine have rocker arms either.
The Toyota 4.7 I rebuilt last year was dohc and it went cam->cap->top of valve stem.
True, some in fact most new OHC setups are that way, other earlier styles the cam actually presses on a rocker arm then the valve. Depends on the manufacturer. I have never torn apart the top end of one of these 4.0 so I am not sure.

Example of a Honda OHC setup with rocker arms

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Last edited by GhostRanger; 07-21-2011 at 05:25 PM.
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  #18  
Old 08-01-2011, 08:52 AM
Kwiksilvr Kwiksilvr is offline
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Default Re: Im about to cry.... Is the 4.0 an interference motor?

These arms do infact have rockers... I am about to replace mine in the passenger side becasue I think I tweaked one when I lost some valves replacing my timing chains... and it makes a ticking noise... so at the same time I will replace my lifters too..

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Quote:
Originally Posted by GhostRanger View Post
Not to be a pain in the ass here, but if you have a 2003 4.0, that is an OHC engine and does not have lifters. The only thing that could be making noise is the rocker arms or the valve springs.
uh... I pulled out lifters when I pulled the head.. I had them in my hand..
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