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How about one for your own state ? CARB compliant EFI EFI EFI. http://forums.pelicanparts.com/uploa...1751227896.jpg |
Smog compliance in California is a tough nut to crack. They even have specific catalytic converters that must be employed. For what it's worth, our goal as it pertains to smog compliance is simply to make slight improvements to stock smog engines.
We have a system to eliminate some smog systems on a few specific years but there are limits to what can happen within the laws. |
Starting with a stock 930 and other parts we have on the shelf.
I believe I'm leaning towards a long stroke 76.4 (993/964) crank with forged rods 97/98mm cylinders, 8.0 compression. COP, crank fire twin plug Single K27, small port 36mm heads, Modified CIS, DC15 cams, performance exhaust and a huge inter-cooler. The goal is massive torque with about 400hp in a street driveable turbo. |
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- How does the slightly longer stroke affect boost? - How much boost do you think you need to run to achieve the performance goals? - With the struggles of many folks with CIS and 400 hp turbos, I'm interested in following what you do to modify the stock CIS to avoid being overly rich in the midrange while still having enough fuel at redline? - In terms of exhaust headers, would you favor equal length or shorter unequal length primaries and why? Thanks for any insight that you can share! |
@Henry Schmidt: is the goal to build a one-off or create a duplicatable product?
Why not offer a baseline of engines with a couple intake and exhaust options? Use the SC/3.2 series for those seeking small displacement, high-revving performance; and the 964/993 series for a work horse 4.0. Give street guys solid and reliable performance without headaches. Make it easy to do the swap and a durable paid shipping crate to return their core to you. Make it easy for folks to get excellent engines PLEASE! |
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As evidenced by this thread, there is no consensus. The idea of crating an engine is good (that's what we do now) but if the customer has a core, it's best to have that core in advance. That's assumes the core is adequate for the build. The idea of this thread was not to generate a new revenue stream, We are too busy already. The idea was to get my hands on a personal project mainly to keep my hands busy. |
Thinking out loud
First step to peanut power.... http://forums.pelicanparts.com/uploa...1754599684.JPG http://forums.pelicanparts.com/uploa...1754599684.JPG |
With a flat top piston?
If you build an engine with the peanut chambers and twin plugs, please run the engine on one set of plugs, as well as two, and compare the difference on a dyno. In a tight chamber like that, I would expect the power difference to be significantly less than in the large open chambers with twin plugs. |
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