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mb911 mb911 is offline
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Join Date: Jan 2003
Location: Burlington, Wisconsin
Posts: 9,314
Originally Posted by RarlyL8 View Post
Equal length primaries are mandatory to optimize the twin volute design. Each pulse must arrive at a different time.
SSI developed their version of the twin volute system some 15+ years ago. A modified GT30 now sits in the turbo spot. Twin 38mm waste gates balance the two banks. The system was optimized for torque and boost response.
Sense you already have the SSIs installed I would give that a go first and then compare it to the 993 based H/E system you plan to develop.

Here is what a 930 engine looks like with 993 H/Es mounted. The stock turbo orientation may be tricky on the driver's side.

Yeah Brian I hear you on the advantages but the 993 set up offers a more compact design. And boy do I remember chucks set up

914-6 2.4s GT tribute. manufacturer of 914-6, GT, Conversion parts
Old 11-15-2008, 06:04 AM
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