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Join Date: Oct 2002
Location: Loveland, CO
Posts: 610
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Have some odd questions
1) Are there any differences in the turbo and n/a cam? Like the duration and all of that, i would think the turbo would open more to flow better.
2) Would a n/a head work ok on a turbo block running 12-18 psi? 3) Dp the n/a head flow any worse than the turbo or is it just the ceramic ports that are the difference? 3) Would the turbo computers work with a n/a intake manifold with the n/a throttle body on it? Are the sensors on the throttle body any different? 4) Is a turbo, wide fire turbo, and n/a headgasket the same patterns EXACTLY? And will interchange with each other? Say a n/a head on a turbo block - Will a turbo headgasket work ok? 5) Will a turbo head gasket kit work on a n/a - that way a turbo head gasket can be used, or should the n/a headgasket kit be used and only the turbo head gasket itself. Thanks John |
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Registered
Join Date: Nov 2001
Location: Melbourne, Florida
Posts: 431
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Re: Have some odd questions
1) Are there any differences in the turbo and n/a cam? Like the duration and all of that, i would think the turbo would open more to flow better.
The cams are the same up to 86~87ish, then the n/a cam got like 8 degrees more exhaust duration. 2) Would a n/a head work ok on a turbo block running 12-18 psi? The n/a can be used, but there are differences, the ceramic ports help keep heat out of the head and into the exhaust gas. The hotter the gas is getting to the turbo, the better. The turbo head also has sodium filled valves to help with the heat. 3) Dp the n/a head flow any worse than the turbo or is it just the ceramic ports that are the difference? No idea on the flow differences between the two. The intake I would assume to flow the same for both. Some actually use a n/a head on a turbo with the turbo valves because then you can port the exhaust ports. I don't know whether or not they have the exhaust ports ceramic coated after porting. 3) Would the turbo computers work with a n/a intake manifold with the n/a throttle body on it? Are the sensors on the throttle body any different? The TPS's are different. 4) Is a turbo, wide fire turbo, and n/a headgasket the same patterns EXACTLY? And will interchange with each other? Say a n/a head on a turbo block - Will a turbo headgasket work ok? Yes, they are the same pattern and can be interchanged without a problem as long as both/either are 2.5l non "s" components. 5) Will a turbo head gasket kit work on a n/a - that way a turbo head gasket can be used, or should the n/a headgasket kit be used and only the turbo head gasket itself. Yes. Rob
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1986 951 |
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1. I believe the turbo has a slightly longer exhaust duration...than your 86 na
2. Sure it would work, how long is the question... you might burn your valves quicker. You are better of taking that NA head and taking it to a shop...They can rebuild it with your higher boost in mind. Or just pick up a turbo head. 3. Not sure if the flow is any worse or not.... can't remember for sure. 4. The turbo computers consist of the dme and klr....the swap is NOT practical at all, nice idea... but no. 5. Turbo and NA headgaskets are the same pattern. Most NA head gasket kits come with the turbo gasket. 6. Same applies for the widefire gasket as well..
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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Join Date: Oct 2002
Location: Loveland, CO
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Great thanks alot! that helps out alot.
Will the turbo throttle body and sensor adapt to the n/a intake manifold? Thanks again John |
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Join Date: Nov 2001
Location: Melbourne, Florida
Posts: 431
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Will the turbo throttle body and sensor adapt to the n/a intake manifold?
No clue on the throttle bodies, but I think that the throttle position sensors can be physically interchanged. Rob
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1986 951 |
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Join Date: Dec 2002
Location: Monett, MO
Posts: 1,085
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Still going w/ the supercharger project?
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