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View Poll Results: Which stacks for boring out to 38mm?
Plastic 0 0%
Magnesium 7 100.00%
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kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
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Plastic or Mag?

I have found myself with the option of choosing either mag or plastic stacks (both are currently 32mm) to be bored to 38mm for my new motor. Which would you choose and why?
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Kenik
- 1966 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 03-31-2008, 09:26 PM
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Either way is fine but I would save the mags for a big motor because you can port them quite a bit larger than the plastics. What displacement are you doing again?
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Aaron.
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Old 04-01-2008, 05:03 AM
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Hi Aaron,

2.3L, 8000 RPM motor. Pretty much an early ST clone.
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Kenik
- 1966 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 04-01-2008, 05:12 AM
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Nice! I have to look at my notes but I done 38/46 with plastic stacks and 42/52 with the mags. The plastics are limited by the integral air horns. I may have taken the plastics out to 48 on the tops....I'll get back to you on them.


On a side note; What P/C did you go with?
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Aaron.
Burnham Performance
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805-240-6931
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Old 04-01-2008, 05:27 AM
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Henry sourced the 85mm JEs in bored out Birals, but I have decided to go with Nickies direct from Charles at LN since. I decided to go no compromises.
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Kenik
- 1966 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 04-01-2008, 05:31 AM
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Ah, I see. Thats a motor I can get excited about.

As for the choice in stacks I would choose the mags just for the convienence of air filter choices. I have not come up with an elegant solution for the plastics.
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Aaron.
Burnham Performance
1071 Avenida Acaso suite D Camarillo, Ca.
805-240-6931
http://www.burnhamperformance.com
Old 04-01-2008, 05:10 PM
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Aaron, nice avatar. (I'm sure I've said this before)

I would go with mag as well ... that way you don't need to run an air cleaner and can just run the velocity stacks with no air cleaner troughs. Looks the part and definitely SOUNDS!!!!! the part.
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Old 04-01-2008, 05:52 PM
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Old 04-01-2008, 05:52 PM
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