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TurboKraft's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
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Another 3.4L 930 with EFI

1979 911 SC with a 930 engine transplant, Boxster brakes

Engine rebuilt to 3.4L, ported heads, Carrera manifold, modified Kokeln intercooler, sport cams, B&B headers, Garrett GT35R turbo, and old-school Borla 4-tip muffler

Long block brought in for finishing, build a harness and completely wire the supplied EFI, and tune.














500hp/490tq at the wheels, 1.15bar boost, 91-octane.

TurboKraft 3.4L EFI Porsche 930 makes 500hp at wheels, shoots fire out tailpipes - YouTube

TurboKraft 3.4L EFI Porsche 930 -- glowing exhaust and shooting fire balls -- 500whp - YouTube

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Chris Carroll
TurboKraft, Inc.
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Last edited by TurboKraft; 04-18-2013 at 11:59 PM.. Reason: addition
Old 04-18-2013, 11:58 PM
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Wow, beautiful power..very cool Chris..that car looks very unassuming.

Yasin
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Old 04-19-2013, 04:21 AM
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Brando
 
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What trans?
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Turbo powa!
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Old 04-19-2013, 06:13 AM
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Very nice. I like the way you are plumbing the air filter in front of the manifold. Are you returning the scavenge pump oil to the breather cover and does it/would it interfere with the air filter? Also, I unwittingly chose to have the bulk of my wiring harness pass through that area so it would likely interfere with the air filter placement. Do you have pictures of how your engine wiring harness with main connectors is laid out?
Also curious about tranny choice, ?LSD, and compression ratio.

edit: Ah, I see the throttle body is flipped.
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Last edited by sjf911; 04-19-2013 at 06:33 AM..
Old 04-19-2013, 06:31 AM
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Looks nice.
You can rotate that Sanden AC compressor clockwise 90 degrees and the mounting ears line up the same to pump mount. Then the AC hoses and charge fittings are on the right side and more out of the way.

The AC hoses can then be rerouted behind all the breather hoses going to the oil tank above the right side longitudinal to move them farther out of the way when changing spark plugs or adjusting valves if they are long enough.
Old 04-19-2013, 07:37 AM
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Here's a pic showing the same model AC Sanden compressor mounted 90 degrees clockwise from the one in the above post with the hoses more out of the way on the right side.
Old 04-19-2013, 07:44 AM
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JFairman
Perdy engine. Super clean. Nice
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Turbo powa!
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Old 04-19-2013, 08:13 AM
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thanx

Here's another pic. You can see that rotating the Sanden AC compressor 90 degrees clockwise would also make more room for a full bay intercooler... if I had one.

There is a recirculating piston type blow off valve in the C2 type rubber elbow off the CIS airflow meter housing hosed to the origonal Kokeln blow off valve hose fitting on the back.
The extra blue hose you see goes to a second blow off valve under the intercooler that is vented to atmosphere. It has a little stainless steel mesh air filter on it because when decelerating at lower speeds the high intake manifold vacuum opens the blow off valve and being vented to atmosphere it inhales unmetered unfiltered air so an air filter on it keeps dirt from being sucked in.
Old 04-19-2013, 08:28 AM
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why 2 bov's?
Old 04-19-2013, 08:46 AM
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Because I'm a gadget freak and I wanted to.

I was using the deceleration valve as a second small blow off valve vented to atmosphere.
Then I sold it and took that cash and bought a nice looking black anodized chinese made turboXS copy 32mm blow off valve off ebay and mounted it under the intercooler. It works great with 2 of the included shims under the piston spring.
It's not needed but it reduces any chance of compressor surge in the turbo when lifting off the throttle quickly while under boost and I like the little woosh sound it makes venting some of the closed throttle turbo boost to atmosphere between boosted upshifts.

sorry to hijack the thread with this stuff here...
Old 04-19-2013, 09:17 AM
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Quote:
Originally Posted by JFairman View Post
Looks nice.
You can rotate that Sanden AC compressor clockwise 90 degrees and the mounting ears line up the same to pump mount. Then the AC hoses and charge fittings are on the right side and more out of the way.

The AC hoses can then be rerouted behind all the breather hoses going to the oil tank above the right side longitudinal to move them farther out of the way when changing spark plugs or adjusting valves if they are long enough.
Timely advice for me as I'll be installing my new compressor soon and wouldn't have thought of doing that..
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1982 930, K27-7200, Ruf wheels, Leask WUR, Tial WG, WEGO IV AFR, RarlyL8 headers & single out muffler, TK I/C
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Old 04-19-2013, 10:12 AM
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Sneaky sneaky. Love it...
Old 04-19-2013, 11:10 AM
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Thanks for posting Chris.
Yet another great dyno result:-)
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1979 930: Garret GT35r turbo, EFI, carerra intake, Link EMS, custom GT2 cams, 98mm JE P/C, 964 crank (stroker), custom valves & ported (XtremeCylinderHeads) etc..etc..
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Old 04-19-2013, 05:04 PM
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Chris, You PM box is fill. Please clear it out. Thanks
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Old 06-07-2013, 07:54 AM
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Nice job and love the flames!

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Old 06-07-2013, 09:25 AM
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