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Home > Help Needed / General Tech Chat > GT17 down pipe help

maccamcvey

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Worral Sheffield

I am about to purchase the rest of the bits for my down pipe, and was wondering what the best method was to clamp the pipe to the turbo was? i have done a bit of searching but i cant find and good info on what style of flange was preferred? (shaven or just trimmed?)

Just a straight up flange like so....?

http://cgi.ebay.co.uk/Exhaust-Tube-Pipe-Fl...M#ht_2621wt_919


Or using a flared end on the pipe and the above but not welded to the pipe? like so...

http://cgi.ebay.co.uk/Exhaust-Connector-Pi...M#ht_3202wt_919

My main concern is getting a good seal to the turbo.

Then i intend to use a bend as so...

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...T#ht_2582wt_919

Then on to a standard 2" metro downpipe.

Also where do think it is best to place the wideband sensor?

Am i on the right lines? Cheers


retroracer1380

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Worcester

I used a flare of an old exhaust pipe, trimmed it to fit, then warmed the flare up and hammered itaround on the exhaust housing to fit perfectly.
Then i used a flange to slide over to clamp it up to the turbo exhaust housing. I then seam welded the flange onto the pipe. A bit of exhasut assembly paste around the flare and bobs your uncle


maccamcvey

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847 Posts
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Worral Sheffield

was the flange flared aswell?


maccamcvey

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847 Posts
Member #: 6673
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Worral Sheffield

Cheers, was the flange flared aswell?


retroracer1380

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Worcester

I made the flange out of solid plate, i think i put a slight chamfer on it, but as i welded it to the pipe it didnt really matter. Il try and get a pic later if you like


maccamcvey

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Worral Sheffield

pictures are always helpful but i get the jist of how you have done it Thanks.

Has any one els done it differently?

Cheers


Sprocket

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Preston On The Brook




On 17th Aug, 2010 maccamcvey said:
pictures are always helpful but i get the jist of how you have done it Thanks.

Has any one els done it differently?

Cheers


Yes

I had a flange lazer cut and a bush machined with a 45 degree taper to take 2.25" tube.

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


maccamcvey

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Worral Sheffield




On 17th Aug, 2010 Sprocket said:

I had a flange lazer cut and a bush machined with a 45 degree taper to take 2.25" tube.


How much did that rush ya?


1293 sprite

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Melton Mowbray

I got hold of a Saab downpipe, cut the 90' bend off it before the cat. Just got to weld it to a metro turbo downpipe. Perfect seal to the turbo, as its the factory item!

On 25th Sep, 2009 mini13 said:
cool, i'll pop over with my tool and some lube, lol

1293 88.8hp 82.2ftlb

17.3 1/4 @ 78 mph

Naturally Aspirated (for now)


Sprocket

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Preston On The Brook




On 17th Aug, 2010 maccamcvey said:



On 17th Aug, 2010 Sprocket said:

I had a flange lazer cut and a bush machined with a 45 degree taper to take 2.25" tube.


How much did that rush ya?


Cant remember, I got them done with a load of other stuff. Certainly is not as cheap as shaping a taper in 1.5mm stainless and welding it onto the down pipe. Just think that it will give a better fixing.

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


maccamcvey

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Worral Sheffield

cheers guys

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