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Old 06-29-2016, 09:25 AM   #1
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Sounds like you've read the opinions. I wouldn't expect those to change - you're likely to get more of the same here.

And no, most people have not tried this because they don't want to take the risk of sacrificing an engine for an occasional 50-75 hp.

Someone would have to step up and give it try. Until then, we're all guessing...
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Old 06-29-2016, 06:15 PM   #2
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Is there a ring land issue with the 3.2? With the successful turbo builds I've seen here and there on this forum I see no reason a progressive shot would be very detrimental. It's easier in the engine than a blower... you don't need the crankshaft to spin a bottle, but you need it to spin a blower

My other real questions here

The fuel system, is there enough injector and pump to hit it dry, or would a wet kit or injectors/pump/tuning necessary? If the fuel system has some wiggle room I wouldn't be too scared of a dry hit, if it doesn't , I absolutely wouldn't even consider risking it.


Hoping someone who has dealt with forced induction and stock fuel systems can chime in on the logistics with this subject.

I love the car the way it is, don't get me wrong. I still want a c5 or c6 project car to have forced induction fun with someday, but I bought the boxster because the power was not nearly enough to make the vette even hold a candle to the boxster imo. It puts a smile on my face every day and has made me a better driver in the process. I spent most of my life saying "meh" to Porsche in general, but now wonder what I could possibly rather have than another Porsche as a daily.


I've had plenty of way faster cars. I wouldn't mind giving this one a VERY mild kick once in a while. Engine weakness points and fuel systems are where I am having trouble finding reasons why it wouldn't work reliably, especially with the successful forced induction cars that have popped up. I haven't seen a thread where someone boosted a boxster and blew it up.
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Old 06-29-2016, 06:46 PM   #3
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If you can find out the "smallest" wall thickness of the cylinders and its material composition, I can quickly run a sim and let you know what sort of psi you'll be able to run 'safely' within, both during detonation and compression for that 986.

Those 986 pistons and conn rods also (material), especially at the pin. Whether it is a conventional alloy, cast or not. That pin pivot point is where the force will be greater so the material of the pin is equally important. Shall it fail, the piston pivot point will let go before the pivot on the crank.

I bet the rings are heat treated 8620 conventional alloy already so this should already be good enough (just guessing here).

Start with that mate, obviously there are other pressure points that needs consideration but if the above sim fails there is no point carrying further analysis.
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