4.7 3UZ-FE TRD blower

[benjatelcom]

Hey, I was just looking through the TRD blower install instructions for the 4.7L 3UZ (or was that the 2UZ?) and contemplated: will that blower fit the heads on a 1UZ... It sure is a nice supercharger, and its got a UZ intake manifold built into the bottom...

thanks

ben

 

[Lextreme II]

2UZFE have different head configuration. It will be not bolt on to the 1uz or the 3uz

 

[turboandrew]

It will bolt on a 1998+ 1UZ, 2UZ, and 3UZ. The pre-1998 1UZ motors are the ones it will not bolt on. Even if it does bolt on, you may have hood clearance issues.

 

[Lextreme II]

Andrew, good to know...

 

[JBrady]

It will bolt on a 1998+ 1UZ, 2UZ, and 3UZ. The pre-1998 1UZ motors are the ones it will not bolt on. Even if it does bolt on, you may have hood clearance issues.

Andrew, what was changed that precludes using a pre-98 manifold on a 98+ engine? Angle of port flange? Bolt spacing? Port alignment? My guess is the difference is minimal. If the ports line up a retrofit becomes viable. The 98+ manifold as you know is a much better design than the previous ones.

 

[turboandrew]

port angle is the biggest difference. You would have to mill off a little bit on the early heads and shape the port upward. I'm not sure if you could get away with making all the modifications on the manifold side. Considering all this, I would just go with the later heads since their port design at least seems better (nice and straight).

 

[Zuffen]

If I were doing the change I'd use the ends of the 1UZ manifold and graft them onto the end of the 2/3UZ manifold. This would overcome bolt pattern and angle differences.

Obviously it is harder than that but once you've shortened up the 2/3UZ manifold it's only a matter of "filling the gap" between the shortened 2/3UZ manifold and the head. Whilst you were at ti you may even be able to lower the manifold height so the starter is almost touching the bottom of the blower.

A bit of TIG and things would be looking pretty good.

Looking at the manifolds different people have built on this Forum I'd think this is one of the easy ones.

 

[benjatelcom]

Indeed, a mating manifold sounds like a good idea. And I have a TIG welder!

 

[Zuffen]

THe biggest problem you will have is ensuring the supercharger snout is lined up with the crank in all planes/axis.

When I made my manifold I made up a steel frame that mounted on the cam covers to ensure mine was square.