Some Naked valvetrain pics from another site.

[Bryanccfshr]

I came across these pics on another site and don't have much info on the history other than this is going to be built up for racing, but seeing how I haven't seen this motor exposed like this I thought others would like to see it.

 

[Bryanccfshr]

 

[wcbcruzer]

Looks great. What kind of motor is that?

 

[mpersell]

Is it just me or do the cams seem to have very little pattern on the sides but really quick wide pattern wear on the toe and heel?

 

[Shannow]

That timing chain cover looks like it would be an absolute cow to seal.

 

[Bryanccfshr]

Toyota 1GRFE 4.0 v6 used in 4 runners, Fj Cruisers, Tacomas and some Tundras.

I have no idea of the service history of the engine pictured. It looks to have sat for a while. Just a random sample of the motor.

 

[steve20]

thanks for the pics Bryan-you've got some great cam lobes there

 

[JTK]

Cool! I didn't realize the 1GRFE used shim and bucket valve lash adjustment. That's a nice simple design. Is that big fly-weight looking deal on the intake cam sprocket for cam phasing?

Joel

 

[ARB1977]

Nice pics when i saw the oil filter location i though it was the 4.0L...sure enough it was. Good to know they use a timing chain.

 

[Bryanccfshr]

That is the Variable valve timing that is actuated by oil pressure running through the cam itself and into the sprocket to advance the timing, the signal to actuate the pressure to the system is actually via the electronic engine management.
The buckets do not have shims. The buckets come in various incremental sizes themselves.

 

[Bryanccfshr]

I would also like to clarify, the pics and engine are not mine. I just wanted to share this find with everyone who is interested in what it looks like under all the externals.

 

[Bryanccfshr]

Every detail you may or may not want to know.

http://www.ncttora.com/fsm/FJ/RM/RM0240U/Engine Mechanical.pdf