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One of the WG circuit legs comes out from a single cylinder primary the main leg comes from a secondary. It seem unbalanced to me when the WG opens, unless somebody figured out the different pipe diameters used.
Old 08-06-2009, 05:39 AM
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That single pipe looks like it's there for support only.
Old 08-06-2009, 08:02 AM
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Definitely it could be and if that's the case then it's a nonissue. it'll be nice if someone would confirm that.
Old 08-06-2009, 08:47 AM
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I've seen that configuration before. It does look odd but is a support arm. The stock waste gate is very heavy putting a lot of stress on the point of origin at the Y. The waste gate circuit looks like what I have on my system, just on the back side insted of the front. This allows both banks to branch off at a good angle going to the waste gate which gives a good path for dumping exhaust at higher rpms. The typical elephant nose single waste gate pipe is at a poor angle which contributes to boost creep.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 08-06-2009, 09:34 AM
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It makes sense...

Brian, what's your take on the different lenghts on the primaries vs. equal - low rpms torque?
Old 08-06-2009, 10:15 AM
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Quote:
Brian, what's your take on the different lenghts on the primaries vs. equal - low rpms torque?
Hehe that subject has many battle scars.
If you can assume that a 930 off boost would benefit from the same exhaust design as a normally aspirated 911 then you have my answer to that question. Race cars operate in a different world that does not include stoplights and the occasional drive into work.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 08-06-2009, 01:11 PM
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3.8 is really a 3.6

I met with Don Leatherwood at Brumos. He told me that the engine is in fact a 3.6 liter and not a 3.8. The RSR engines of the era were N/A 3.8 liter. I just tore the engine down and everything looks great. It is infact a 3.6 liter 1994 Turbo engine that has never been fired!!!. Race Cams and a huge Garrett turbo with Andial headers. I will keep the Cis as it is the newest version and I am told of 1994 Turbo S engines producing 480lb with this set up. That is all I want as I am putting this engine in and early lightweight car with a ducktail. Here are a few pics of my 1970 911 S non sunroof. The matching numbers engine has long been gone. I just figured that if you are going to build a car that cost this much, you might as well start with a rare serial number. I was born in 1970 and I have a thing for rare serial numbers and non sunroofs. I have had her in storage for 5 years. We will take her totally apart and build a 73 rsr replica .....with a 1994 3.6 liter turbo. .
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Old 01-25-2010, 06:10 PM
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Wow!

Looks like top of the heap CIS 3.6 turbo race motor done by the best of the best.
Old 02-10-2010, 02:34 PM
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Wow!

Looks like top of the heap CIS 3.6 turbo race motor done by the best of the best.
Old 02-10-2010, 02:39 PM
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