| Matt |
Posted
Thursday, Jun 26th 11:47am [Edit] [Quote] [IMS] [View car] |
Member
Post nr. 72
SF Bay Area
81 320i |
Does anyone know how these guys got the primaries as one piece?
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| m10_power |
Posted
Thursday, Jun 26th 6:57pm [Edit] [Quote] [IMS] [View car] |
Member
Post nr. 11
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Look carefully they aren't one piece, go to www.burnsstainless.com
for mandrel bent tube.
I believe your thinking of welding to the stock exhaust manifold, this will be unsuccessful and will lead to headaches later. |
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| M42powered |
Posted
Thursday, Jun 26th 8:22pm [Edit] [Quote] [IMS] [View car] |
Staff
Post nr. 72
Arizona, USA
1981 BMW 320i |
Getting an extra thick flange is possible. Modifying your stock manifold would most likely end up in disaster. Do you weld often? Making a turbo header or manifold like Paul did is probably one of the most time consuming and difficult things to do.
Weld a section, check for holes, grind out the inside of the weld. It's like cleaning the ports on a head 30 some odd times. I'd probably go with a log style manifold if it is your first try at welding exhaust stuff. |
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| Matt |
Posted
Friday, Jun 27th 12:36am [Edit] [Quote] [IMS] [View car] |
Member
Post nr. 75
SF Bay Area
81 320i |
The adaptor will be .5" , is that thick enough?
What kind of problems, besides the actual welding, do you expect me to encounter?
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| M42powered |
Posted
Friday, Jun 27th 12:59am [Edit] [Quote] [IMS] [View car] |
Staff
Post nr. 81
Arizona, USA
1981 BMW 320i |
I've posted this place a bunch:
http://www.jgstools.com/turbo/
They have cheap log style manifolds that you make and have them weld, mail order.
Welding is fun. Not really a headache. |
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| m10_power |
Posted
Friday, Jun 27th 2:10am [Edit] [Quote] [IMS] [View car] |
Member
Post nr. 12
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Matt,
Tuning will be your biggest hurdle, slightly wrong and you will have extremely high exhaust gas temperatures (EGT) under boost, which will destroy pretty near any manifold you can build/buy. Too much boost, incorrectly sized turbocharger, slipping clutches, worn out rear tires  , grenading differentials...not an easy journey. Everytime I see a 930 turbo I stare in awe, amazing they ran those things in 24 hour races. |
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