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Join Date: Dec 2014
Posts: 1,016
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You win
![]() I'm guessing a 4.0 motor from you would be a lotta scratch- at least as much as a turbo, eh? |
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Mighty Meatlocker Turbo
Join Date: Apr 2016
Location: North TexASS
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Mick, it's either ![]() |
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Registered User
Join Date: Dec 2014
Posts: 1,016
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naaah.
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Join Date: Dec 2014
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Mighty Meatlocker Turbo
Join Date: Apr 2016
Location: North TexASS
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Driver
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^^^ Then I vote azz. I have no dog in the fight, but figured that is the answer that'll make the transaction most interesting.
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1987 Venetian Blue (looks like grey) 930 Coupe 1990 Black 964 C2 Targa |
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Turbo Powered Snow Blower
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^^^ So that's what Rawknee meant by "He earned it the Hard Way".
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Derrick Last edited by 1979-930; 11-07-2016 at 07:22 AM.. |
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Registered
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,764
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Quote:
Building a 3.8L non-turbo is easy: a set of big bore 102mm P&Cs, and you can reuse and modify your rods and cylinder heads, plus your factory Motronic ECU with a chip. With a little head work and cams, and a decent exhaust, you have a really nice, responsive street/track driver with about 300hp. Think 993RS or a little better. Add ITBs and programmable engine and now you have throttle response like a GT3, a wider torque band, increased redline. With better cams she'll make power to 7,500rpm. Oiling mods to crank & bearings highly recommended. About 350hp on good fuel. Total blast to drive on the street, great track weapon. But now you've likely spent as much as one of our really responsive Turbo engines, and those usually start life at 500whp on plain 91-octane pump gas. Recently dynos: 3.6L made 555whp on plain pump gas, 3.8L did 575whp/550wtq. Once you get past 3.8L, the list of things that have to be changed out expensive. There's no cost cutting when building a 4.0L: * lightweight billet crankshaft, lightweight forged rods, lightweight pistons & pins, high strength rings, machine-in cylinders, special gaskets, billet pulley * Xtreme Cylinder Heads -- even modified 964/993 heds become a limiting factor, Xtreme's let you get everything possible out of the 4.0L displacement * ITBs required -- without them, performance is choked by the single throttle intake, hardly better than a 3.8L Starting with a plain 964/993 engine, it's easy to have a parts bill of $60k for all rebuild parts, rotating assembly, exhaust, intake, and flywheel+clutch package. Plus labor and tuning. 380-415hp, depending on camshafts, tuning, and fuel quality. That's our 993RS4.0 engine. But again, at that price point, you would have had a really punchy Turbo engine that felt like a turbocharged GT3: snappy throttle, instant-on torque, 600whp or more on pump gas -- and money left over. Want over 400whp naturally aspirated? BTDT, dynos of 450whp on high test fuel. Be prepared to spend Motorsports level money.
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft |
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You live in Rarified air, Chris. Guess I'm a wanna-be. I'll find a cranky 3.2 that could use a rebuild and mod it in steps.
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That's rare air for most. We build few a year.
NA power is always most expensive $/HP in my experience. Big bang-for-the-buck: built 3.2L converted into 3.4L, solid rebuild with Turbo oil pump & case squirters. Standard Carrera heads, intake, t-body. Off-the-shelf bolt-ons (headers, muffler, turbo, IC). Programmable engine management. 500whp all day long, piece of cake. Smooth, really responsive, great torque, and bloody fast when you want it to be. The one we did for that blue "America Roadster Turbo Project" had just basic 3.3L Turbo P&Cs, twin-plug heads. First dyno pull with hardly any ignition timing was 515whp, and she left tuned at 540 or 545whp. Just a beast of a car at throttle, but you could drive it on damp roads without concern because throttle response is accurate and controllable.
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft Last edited by TurboKraft; 11-07-2016 at 11:19 AM.. Reason: typo |
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Registered User
Join Date: Dec 2014
Posts: 1,016
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What would this produce without the turbo? 350? 400?
I'm really interested in having a motor such as this. I may have to pay for it piecemeal. Quote:
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Mighty Meatlocker Turbo
Join Date: Apr 2016
Location: North TexASS
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Registered
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Location: Phoenix, AZ
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Quote:
Like I said, a 3.2L rebuilt with good used 97mm 3.3L 7:1 P&Cs and twin-plug heads was doing 540-545whp on pump, no issues. Kelly's 930 ("Taking the EFI Plunge") did 555whp, 3.3L, single plug, flat manifold.
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft |
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Registered
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,764
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You sweet talkin' tease
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft |
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