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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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My first engine build complete - the 3.2SS is alive.
I know many of you don't read the engine building board. Most of you do a lot of DIY projects but might think that engine internals are some kind of black magic. Let me just say that there is a wealth of information and if you are detail oriented and mechanically inclined you too can build your next 911 engine.
I rebuilt the top-end due to head stud failure. I am not going to recount the whole build here. The following link will show previous posts on the build. 3.2SS continues - Part III - the assembly If you are just starting the engine specs are as follows. 1978 930/03 base engine 98mm Mahle PC set. Measured 10:1 compression DC 40-108 deg cams steel head studs Home-made twinplug distributor using Jaguar 12-plug cap and Burn-Bros. rotor. Thanks Aaron! Twin-plug heads by G2 Racing. Thanks Craig! Ceramic Thermal barrier coatings on heads and piston crowns Dry-film lube on cams, rockers, rocker shafts, piston skirts, wrist-pins and every other moving part I could find. TWM 3003 ITBs MegaSquirt ECU (MSII-V2.2) A few weeks ago I was able to get the motor back in the car. Last week I finished wiring up the motor only to find that my Crane optical trigger was not working. Late Thursday night I sorted it out. (Read: A new one was delivered by FedEx Ground). So I connect the ECU, disable the motor, pull the top plugs and spin the motor with the starter. I was getting about 1.2-1.3bar of pressure off the starter. Enabled the engine by connecting the ECU and installing the plugs. I was not expecting the motor to start right away. The motor took half-a-turn and fired to life. I was a little freaked out and shut it down quickly. I am not sure why. 10 seconds later I fired it up again. Once it was running I stabilized the map and it was loping along at 2100 rpm to break in the cam. It was running a too rich to explain the loping. After my 25 min cam break-in I made some more changes to the EFI map. Here is the result: now I need to reset the AFR at idle, balance the throttle shafts and lean out the acceleration enrichment. I am so stoked right now. I don't know if the high is from the unburned fuel vapors or natural euphoria. Not a drop of oil anywhere that I can find.
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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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12-20-2008, 10:13 AM
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Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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Great news Jamie!
I love that moment when you first twist the key and it fires right up! ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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12-20-2008, 10:45 AM
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Administrator
Join Date: Feb 2000
Location: Los Angeles
Posts: 13,333
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Jack Olsen 1972 911 My new video about my garage. • A video from German TV about my 911 |
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12-20-2008, 01:02 PM
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Congratulations - great to hear the beast come to life.
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12-20-2008, 03:20 PM
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Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,732
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Excellent! You are the spirit of the forum with all your projects.
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12-20-2008, 03:31 PM
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Bandwidth AbUser
Join Date: Nov 2001
Location: SoCal
Posts: 29,522
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Congrats Jamie, you crazy mad scientist! So, now what are you gonna build in your top secret laboratory?
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Jim R. |
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12-20-2008, 03:43 PM
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Jamie,
  Good job. Great early Christmas present eh? I bet you crack 250bhp when you get around to dynoing  Would love to hear your subjective driving impressions of the motor (torque, revability, etc) compared to prior stock motor.
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'79 930/934 replica 80 RSR-look(Now in Sicily) 914/6 2.7 (Projekt 908/3) 1965 Karman Ghia-Class winner 2007 Carrera Panamericana/Ducati 900ss/GhezziBrian STW D-Zug Produkte/D-Zug.com |
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12-20-2008, 03:52 PM
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You have a bigger set than I do!!
Someday when I grow up. Congratulations.. Scott
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Scott "Houston, Tranquility Base here, the Eagle has landed" Silver 1984 M491 Sunroof Coupe |
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12-20-2008, 03:56 PM
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Awesome build Jamie! Looking forward to seeing it up close during the Rally in April.
Last edited by richemj; 12-20-2008 at 06:27 PM.. |
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12-20-2008, 06:01 PM
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Join Date: Jan 2003
Location: Langley,B.C.
Posts: 12,000
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Nice job! Now get some agressive miles on it quickly to seat the rings!
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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12-20-2008, 08:12 PM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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Jack and Jim, I resemble that picture and remark. )
My goal was 260 at the crank. I think I might exceed that a bit. It will depend on how much torque I am still making at higher rpm. I mostly wanted higher rpm power like my targa. Rich, Are you going to make it up for the rally? I thought you were doing the MS150. Jeff, Don't worry, there will be some quality time that connects the go-pedal with my right foot. I have to remap the EFI with the new displacement and cam profile. This shouldn't take too long but there will be a lot of pulls down my "secret" tuning streets.
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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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12-21-2008, 04:24 AM
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Welcome to the 3.2SS club! Congratulations on the build. I have only one question. Having grown up in Austin, I know what Austin summers are like (all 9 months of it) how are you going to live without A/C?
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Steve Sapere aude 1983 3.4L 911SC turbo. Sold |
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12-21-2008, 07:17 AM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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I have not had AC in the 911 since it was built. I just don't drive it much between June and September. The other months are fine.
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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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12-21-2008, 12:36 PM
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Hi Jamie.... Great job. Your car sounds fantastic for the fist run. Good luck and I hope to get mine running soon. Thanks again for all your help on the M/S
steve
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80 911 SC 79 MGB 64 TR4 64 Chev S/B PU 29 Olds |
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12-22-2008, 06:38 AM
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1980 Porsche 911SC
Red Dragon
908ster
1985 Porsche 911
Beast
1971 Porsche 911 RS Lightweight 3.2L
1983 Porsche 911SC
1980 Porsche 911
