On hindsight Id go for a 12mm flange in any material for strength and better for touching up welds which flange design are you going for? Im interested in the unitary inlet and exhaust design that Harry up north used in the past.
It was a very nice manifold setup combined on the same flange

yeah there is a beer allocation in there. My offsider who is helping is a scotch drinker so theres some allowance in there too for that!

next question.

Im getting the flanges cut up tommrrow from a laser cutter.

Should I just get the 10mm flanges so that I have plenty of meat to hang the turbo as well as machining room? or will 5mm suffice for that job.

I am also looking for a place in Perth that sells the mandrel bent steam pipe. The few place i have rung sell them in everyting but mild steel steam pipe. Stainless or 10 different grades and aliminimum no probs. Mild steel - no so aparently.

does the $100 for stuff include beer or do you add another $100 for beer id go option 2 with allowance for beer

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thanks intresting. Im not so keen on welding the cast now. I think for a project where I can muck around with no consequences later down the track sure, but not right now.

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what exactly do you mean by 'sys'. Sorry if thats a dumb question.


Dealing with the folks over at Patrol4x4.com, it seeems that most commonly a mild steel box is welded ontop of a std NA exhaust manifold and the turbo flange on top of that. Looks ugly as sin, but im sure it works.

It also seems that some folks with GQ patrols are using the std factory turbo manifold and bending the exhaust pipe into a hockystick to fit. I spose there are plenty of options.

Im still thinking that a custom steam pipe manifold will be the way forward, witha 5 into 1 flange under the turbo.

The other option is to have the five pipes into a log style manifold with a tapered flange for the turbo to mount onto.

hmmmm still options.

I have welded cast exhausts with good results, but to explain the set up alone would take a long time, alot of preheating to the "run" temp, The nickle dosnt expand like you want so I ended up making a lot of v groves to dissapate the shrinking and expanding of the cast. Don't attempt if you dont have a back up manifold! When done you still have to match the insides of the runners, so if you cant touch it with the tools you have, don't try it. If you have a nice wire feed, go for the tubing. I wish you were closer, I have a sys for that motor you could make work well. good luck!

thanks guys for the point in the right direction. Im thinking that the custom manifold is the way forward.
ill link some pics in (not post here since not datsun related) when I have it done

cheers

welding cast is an absolute bitch so i'd scratch that

do it yourself, you could stuff the first one you make then make the next one perfect and it'd still be cheaper than of the shelf

only option two will bring you true happiness

the pre made options are likely to frustrate you with the way they are made and don't seem to suit properly,

full custom you only have yourself to blame...lol

as long as you can weld you can make a manifold, with the steam pipe sections they are already chamfered ready for welding, its just the mocking up and tacking it all in place that takes ages

Thanks for the ego props.

A good friend of mine is also encouraging me to do so. Im thinking that is going to be the way forward.

Try option 2, your pretty switched on.

Lagwagon or Sikyne could shed more lighT