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S4 and S5 TII primary ports different

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Old 02-09-05, 01:02 AM
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S4 and S5 TII primary ports different
I had a couple irons sitting side by side and noticed that the primary ports from S4 differ from the ports in S5, both are from T2 motors.
Was anyone aware of this, cause I sure wasn't.
Which port looks like it flows better?
Attached Thumbnails S4 and S5 TII primary ports different-s4vss5.jpg  
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Old 02-09-05, 03:29 AM
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Which one's which?
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Old 02-09-05, 05:34 AM
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YES.
The S4 turbo opens 10-degrees EARLIER than the S5 turbo.
Therefore, the S4 center is better flowing.


-Ted
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Old 02-09-05, 10:09 PM
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Oh sorry, S4 on the left and S5 on the right.
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Old 02-10-05, 12:27 AM
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how about the secondary ports?
Last edited by theflatlander; 02-10-05 at 12:33 AM.
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Old 02-10-05, 10:56 PM
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I didn't even think to look, I will get some pics of them as well
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Old 02-11-05, 08:18 PM
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Probably just the primaries for better emissions.

Vacuum 2ndary plates will stay shut on non-dyno emmisions testing as was done at the time.
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Old 02-13-05, 12:28 PM
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look in the fsm, the specs are in there
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Old 02-14-05, 01:56 AM
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but that requires me to download and stuff and im way too lazy for that. j/k i looked it up they're the same.
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