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Administrator
Join Date: Feb 2000
Location: Los Angeles
Posts: 13,334
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4.0- and 4.2 liter upgrade kits
I stumbled across this outfit's web site, and now I can't find it in my bookmarks. It's an company that does 4.0-liter and 4.2 liter upgrades from a 964 or 993 base. Does anyone know their name?
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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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04-11-2002, 08:06 PM
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Hilbilly Deluxe
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04-11-2002, 08:09 PM
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Registered
Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
Posts: 2,316
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is it just me or does the interworkings of JO's mind frightening...
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04-11-2002, 08:18 PM
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Join Date: Oct 2000
Location: Sherwood, Oregon
Posts: 2,119
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I think Jack's in the quest for clean air.......
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Cary 77 Carrera RS w/3.2 #59 73 914S 2.0 AG 73 914 1.7 Driver ( daily driver, under complete rustoration ) 74 914 2.0, 71 914 Tub, 74 914 2.0 Tub + 73 914 donor |
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04-11-2002, 09:03 PM
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Administrator
Join Date: Feb 2000
Location: Los Angeles
Posts: 13,334
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That's it. Thanks.
Just window shopping, at this point. 
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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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04-11-2002, 09:17 PM
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Too big to fail
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Wow! I had no idea whoopin' yo' ass on the track would upset you that much ...
 I think I remember an ad in Pano for Kolbenschmidt pistons of similar displacement... (everyone wants to be like Jack, but Jack wants to be like me 
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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04-11-2002, 10:00 PM
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Wow, 4.2! In a 901 motor! That seems like a lot, does it really work?
Come on, Jack, why not just build up a flat 8? Just a custom sandcasting & crank, plus about a hundred other little details. You could track down a 908 for inspiration, I'm sure there's one around down there!
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David Schultz 1973 911T 2.7 |
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04-12-2002, 12:19 AM
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Join Date: Jun 2001
Location: Sweden
Posts: 5,911
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Hmm...you guys ever heard about turbo?
Turbo + 3.6L = horsepower at will ... you could skip the intercooler if you want to keep that rear lid nice & clean...but it should deliver plenty of HP @ moderate boost still....and cost about the same. Add then intercooler, crank the boost to 1.0 bar and you're off...
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Thank you for your time, |
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04-12-2002, 02:08 AM
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Beepbeep,
Even at 0.5 bar, the compression ratio would still be too high. What's your CR, Jack? It's something like 10.3 or 10.8:1, right? Also, adding a turbo would add more weight, and from what I understand, Jack doesn't want anymore weight back there. I kinda like the idea of a flat 8! Matt Holcomb 1974 911 Carrera 2.7 RoW 1975 Mercedes-Benz 280SE Dedicated Homepage Engine Rebuild Homepage Porsche Owners Gallery Profile Pelican Gallery Profile |
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04-12-2002, 04:03 AM
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Jack, Is all clear 4.2 Twin Turbo I know some day just some day you may joint the turbo ranks!
Regards Juan 3.2 Undercover 
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04-12-2002, 04:45 AM
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Metal Guru
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Jack's working his way up to one of those JATO rockets strapped to the back of his beast.....
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04-12-2002, 05:39 AM
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Registered
Join Date: Jun 2001
Location: Sweden
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Of course, turbo-conversion would mean that you need to lower CR to 1:8.0 or something...
Fun part is that you get heaps of power simply. If you are not a hooligan, install smaller and easier-spinning turbos and keep power output and boost under 400HP you can get really plesent and tractable engine that will pull away from everything. I mean, what's the point with 300HP N/A horses if they arrive peaky at sky-high RPM...it's faster to have meaty & flat torque-curve in entire rev-range, even if top HP is the same! Keeping it down with small turbos and moderate boost will help kill turbo-lag as well and will make potent engine, without mucho $$ and exotic stroke-adventures connected with hi-po tuning of N/A engines. Yes i know you guys like bark of N/A engines and think that turbo's are lazy...but at this point where Jackie O is, i think that's a good idea as long as he's focused at faster lap-times more than "feeling of the car". I have a friend that did dual-turbo conversion of 3.6L with low C/R pistons and he can extract anything from 300 to 600HP depending on driveability, life-span and engine character... Of course...that would also mean that Jack would stray from "we-nice-guys-with-lovely-SC's-and-N/A-engines" to our beloved "HP-junkie-pour-it-on-baby" camp....but that's another story. :-)
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Thank you for your time, |
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04-12-2002, 06:54 AM
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Gettin' Thin
The racers say that that 3.8 motors are fragile on the top end keeping things sealed. 4.0 4.2 would be harder to maintain. Maybe runnin' at sub full bore race they might last longer, just a guess.
Randy Jones 1971 911 |
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04-12-2002, 08:47 AM
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Join Date: Oct 2001
Location: Saratoga, NY,USA
Posts: 220
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Ifn itwere mine, I would stick with 3.8, Ruf Ti con rods, either FVD MAF or go to Motec, 3.8 RS cams, fully flowed heads, ARP hardware, and be resigned to suffer along with only 350 hp a barely streetable engine, And a very light wallet.
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04-12-2002, 09:20 AM
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Beep Beep AMEN......
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04-12-2002, 09:56 AM
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Crotchety Old Bastard
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I think the N/A crowd is better suited to supercharging for additional power. The dreaded L-word scares them off.
For similar dollars as a 3.8-4.2L upgrade you could bolt on a low output SC w/intercooler. If you want more you can lower the compression later on (pistons only) and turn up the wick. Gobbs of torque to be had.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-12-2002, 10:31 AM
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Registered
Join Date: Jun 2001
Location: Sweden
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I don't think people understand that acceleration is a function of torque troughout rev range and that peak power figure is just a measure of power curve "peak"...
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Thank you for your time, |
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04-12-2002, 11:35 AM
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Too big to fail
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Exactly. A friend of mine just bought a crotch rocket (aka sport bike) which has about 120HP. This is over 2x the HP of the VW single cab pickup that he owns, which has ~55HP. Yet, you would not want to put the motorcycle engine into the pickup, and fill said truck up with sand and try to drive it. You can do that with the 54HP engine, but you wouldn't get out of the driveway (much less materials yard) with the motorcylce engine.
It's all about the torque, baby! Quote:
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs Last edited by widebody911; 04-12-2002 at 12:18 PM.. |
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04-12-2002, 11:52 AM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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Quote:
Planning on torture testing your latest 915 Jack? Hope the latest 915 is more stout than the previous box!
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Kevin L '86 Carrera "Larry" |
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04-12-2002, 12:16 PM
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Remember guys.....
A little is good More is better And too much is just about right!! And...the only way to beat cubic inches is with rectangular dollars. Bob
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Bob Hutson |
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04-12-2002, 01:10 PM
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1982 Porsche 911SC Coupe 3.2
1973 Porsche 911T 2.7
1974 Porsche 911 Carrera 2.7 2.7 MFI
1988 Porsche Carrera 3.2 Turbo
1991 Porsche 964 Turbo
1971 Porsche 911 3.2 
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
Harley
