Basic Mirage Manifold Question
Turbo Mini Forums

What do people do with the bottom two studs on the manifold to turbo joint, do they put the studs in the turbo and put the nut on from behind the flange on the manifold, or keep the studs on the manifold flange and somehow put the nut on from the backside of the turbo flange? It really is an easy question but how can I make it sound so complicated?

I have another question to ask but can't remember what it is... I'll be back with that shortly.

studs in the manifold, then put the nuts on after fitting the turbo.

its dead easy really.

The turbo is threaded for studs so if I put studs in the manifold they won't pass through the turbo unless I drill them out (these are the "bottom" studs I'm talking about). Is that what everyone else does then?

yup, you drill out the turbo for a clearance on the studs

You can use a hand drill just to bosh them through. 8.5mm IIRC

would be a nightmare to put the nuts on the back of the manifold flange.

Nice one. i was gonna ask the same question, regarding the threaded turbo.

Hi,
Might be better with 9mm holes to allow for expansion etc
Cheers,
Gavin :)

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My Mini build diary

Excellent guys thanks. I'm just dummy fitting it all together with a spare turbo. TBH there isn't much room behind the T2 either, the flange is thick and I can see me trimming a bit off it to get the nut between that and the housing.

The turbo I have is a "6 months old" ebay purchase. Guess what, 2-3mm of play, the comp trim has touched the housing and there's 4 or 5 cracks in the exhaust housing. Bargain!

What sort of money is a T2 fetching these days?

dont loose any sleep over cracked exhaust hosings, they pretty much all are.

the play on the other hand :(

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

there is only enough room for a nut really but just put each one on a couple of turns then just go round tightening them up. no need to grind any bits out

my exhaust housing is cracked to fook! still does ok though.

I've come across a couple of turbine castings that i've removed a little bit of meat from the web to give a bit more room for the nut. You could use a small die grinder carefully.