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Registered
Join Date: Jan 2003
Location: Langley,B.C.
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3.4 Dyno Chart
Just wanted to share the lasted dyno chart after final tuning. The motor is a 3.4. The great torque curve is courtesy of cams from John at DRCamshafts. We have used these exact cams in a couple of other 3.4 builds and love the power/torque curves.
![]() Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Join Date: Jun 2013
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Jeff,
I got a similar shaped curve with John's 993SS cams in my 3.4 build. Only difference to your build is that I used the standard 3.2 intake manifold and consequently lower peaks of course. Similarly I used Motec/twin plug/CoP/twin O2 sensors/twin knock sensors/AFM delete tube/1 5/8" BBE's/Dansk Motorsport muffler/Mahle 10.3:1 98mm. It's great to drive in the Twisties. What is the spec of the cam you used? Last edited by Peter M; 10-23-2019 at 11:03 PM.. |
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Registered
Join Date: Sep 2004
Location: Woking, McLaren-land
Posts: 681
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Really impressive - I achieved similar figures on my 3.45. Similar setup except for using 1.65” OD headers
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Since it is showing uncorrected, what temps were this engine ran in?
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood ![]() |
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Try not, Do or Do not
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Very nice....
I have a stump or two on the property. I was going to use the Tundra but ?????
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net |
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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Very nice shape to those power curves. Love the flat torque curve. Looks like there are some more rpms in that beast.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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Quote:
We have another 3.2SS on the dyno right now, then sending out latest 3.8 over there as well.
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Quote:
We ran out of injector... It could spin 7200 reliably I feel, but we limited it to 7000. With a larger injector we would seen north of 300 at the wheels. cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Very Nice!
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Registered
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Quote:
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Dyno room temps approx 78 degrees.
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Location: Atlanta
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That is awesome. Great build!
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
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That's a V-8 torque curve. Very nice. How does it drive?
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Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Yes very flat, almost like a new gen small turbo car, except it keeps pulling. It drives a amazing, never really in the wrong gear. You can run it out to 7K or short shift it, always some torque there. It also helps that it is in a car weighing around 2300lbs
![]() We have built this combo a few times and just love the torque. We have a 3.2SS ITB motor on the dyno getting final tuning right now, then the 3.8 ITB one will be on the dyno hopefully late next week. Just putting some break in miles on it before final tuning. Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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Location: California
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Great job on this build Jeff!
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John Dougherty Dougherty Racing Cams |
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Love it, such a good promise for my 3.4 build...almost the same spec except for PMO's, Eisenmann exchangers and DC35 cams....
If I can get that torque curve even with 10% less HP and torque I will be delighted..... Dennis |
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Location: Omaha, NE
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which injectors were you using?
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1980 911SC Targa 3.6L |
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Any reason to go with 98mm pistons over 100mm? I am having an engine built and thinking 3.5? Also struggling with ITB selection, as there are a number of choices. I want something easy to maintain over all else.
I have a 915 box (engine will be in a 71T) ... stock gear ratios seem fine; any sense in re-gearing it closer / shorter? With this torque it would seem not. |
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These were 30Lb Bosch, we should have used a 36lb.
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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