GU Turbo Manifold Dimensions

[sootygu]

I was hoping someone would have the dimensions for the turbo flange from an original GU 4.2 exhaust manifold.

Needed are the bolt hole and internal pipe dimensions.

Cheers

[raptorthumper]

Here is the one i did for my TB45. It fits the TB42, TD42, TD42T and TB45 engines, but i believe the ports may be slightly bigger for the TB45, (compared to the holes in the diesel head) but this shouldn't matter.

You can download the dxf file i have for it if you have a CAD package.

Note the manifold is drawn with slightly oversize ports compared to the head. ie from memory the cylinder head ports are 38mm wide x 40mm high, and the flange is drawn at 40mm wide x 42 high. (This is also how Nissan have sized the exh manifold ports larger than the ports in the head.)

http://grantm.customer.netspace.net.au/TB45_Exhaust.dxf


If you do measure the TD42 port sizes, let me know what they are.





This is the reason i think the diesel manifold ports are smaller. This is a photo of Denco Diesels high mount for TD42 patrols.







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Grant.

[raptorthumper]

Also have a read of

Turbo manifolds

http://www.outerlimits4x4.com/phpBB2/vi ... sc&start=0




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[sootygu]

Thanks for the drawing.

Thats a fair bit of work you have done, I take it you use autocad for work purposes.

How are the mods going, how close are you to being finished.

[raptorthumper]

Yeah, I am a Mechanical Engineer, so i have plenty of experience with AutoCAD, Proengineer and IronCAD 2D & 3D Modelling packages. Turbo installation is nearing completion. I am going to hold off on the intercooler fitment for a while. Maybe get some ideas and mull over it for a while.

Why do you want a drawing of the flange. ? Are you contemplating fabricating a manifold.?