GERMANY'S TYPE 4 FLYWHEEL, HOW GERMANS LIGHTENED FLYWHEELS |
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GERMANY'S TYPE 4 FLYWHEEL, HOW GERMANS LIGHTENED FLYWHEELS |
Type 4 Unleashed |
Jan 15 2005, 10:47 PM
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#1
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CREATIVE TYPE lV ENGINEERING Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None |
Has anyone seen these before?
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Type 4 Unleashed |
Jan 15 2005, 10:48 PM
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#2
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CREATIVE TYPE lV ENGINEERING Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None |
PIC1
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Type 4 Unleashed |
Jan 15 2005, 10:50 PM
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#3
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CREATIVE TYPE lV ENGINEERING Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None |
PIC2
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Aaron Cox |
Jan 15 2005, 10:50 PM
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#4
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
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Type 4 Unleashed |
Jan 15 2005, 10:51 PM
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#5
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CREATIVE TYPE lV ENGINEERING Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None |
PIC3
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Type 4 Unleashed |
Jan 15 2005, 10:53 PM
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#6
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CREATIVE TYPE lV ENGINEERING Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None |
PIC4
Attached image(s) |
Type 4 Unleashed |
Jan 15 2005, 10:59 PM
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#7
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CREATIVE TYPE lV ENGINEERING Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None |
PIC5
Attached image(s) |
Brett W |
Jan 16 2005, 12:35 AM
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#8
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
They weren't looking to take much out were they. Bet it probably weighs in at about 10lbs.
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Mueller |
Jan 16 2005, 12:43 AM
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#9
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
Automotion used to sell flywheels lightened in the same fashion.....
Aaron, it's not that big of a deal for any decent machine shop to make one...figure a few hours of labor (setup and such) and then send it off to get balanced |
DNHunt |
Jan 16 2005, 07:38 AM
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#10
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Get it balanced with the rest of the rotating mass if possible. Course if you are not doing a rebuild, you can only balance the flywheel.
That sure looks cool. Too bad all the really neat stuff gets covered with other more boring stuff like bell housings and tin. You have to admit our engines are pretty boring to look at. I found it really interesting on my engine when I mounted the pressure plate to the flywheel, Jake had indexed the bolts. They were numbered 1-6 and the holes were stamped 1-6. Balance is important I guess. Dave |
machina |
Jan 16 2005, 08:14 AM
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#11
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Advanced Member Group: Benefactors Posts: 2,030 Joined: 21-June 03 From: Miami Beach, FL Member No.: 848 |
Gotta love those indexed bolts. I think there is a problem using a FW less than 12lbs. Not sure why but someone will chime in. |
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Brett W |
Jan 16 2005, 10:16 AM
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#12
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
I ran an 11 lb flywheel with a six puck solid center metallic disk everyday for a year. Once you got used to it, it was no problem. Really grabby though. I wouldn't want to go any lighter than that for street use.
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machina |
Jan 16 2005, 10:58 AM
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#13
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Advanced Member Group: Benefactors Posts: 2,030 Joined: 21-June 03 From: Miami Beach, FL Member No.: 848 |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) I got used to the rigid 6 puck in no time. I was worried about doing gentle starts like when I pull on and off the trailer but now I don't give it a second thought. |
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Mark Henry |
Jan 16 2005, 11:26 AM
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#14
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Those look like two different flywheels...one has a welded center. Drilling holes near the center doesn't do much and I don't remove material from the back of the friction surface as the fly could warp.
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jd74914 |
Jan 16 2005, 03:34 PM
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#15
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Its alive Group: Members Posts: 4,782 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
fours don't sound that bad buddy (IMG:http://www.914world.com/bbs2/html/emoticons/flipa.gif)
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TimT |
Jan 16 2005, 04:11 PM
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#16
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
here is the way the factory lightened the 906 flywheel
the problem running superlight flywheel is the flywheel is an energy storage device. The mass of heavy flywheel helps keep the engine running at idle.. High compression engine with light flywheelssometime stall. With a distirbutor ignition this can be a pain in the butt. If you have EFI, you can dial in some etra advance at idle so that the engine makes more power, and helps keep the engine idling well. Attached image(s) |
Aaron Cox |
Jan 16 2005, 04:42 PM
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#17
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
its all relative,..... and thems fightin words (IMG:http://www.914world.com/bbs2/html/emoticons/finger.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) |
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nebreitling |
Jan 16 2005, 04:54 PM
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#18
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
i love the sound of a six, too -- it's totally intoxicating -- but i've heard a few T4's that sound absolutely fan-friggin-tastic, like a horny wasp on crystal-meth out to rape you. yes, that good.
once you deal with the valvetrain "tapping", they can start to sound pretty good. |
Mueller |
Jan 16 2005, 05:22 PM
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#19
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
I have not heard a Nickies equipped engine(yet), but from what Charles said, they have a different cool sound from the air flowing over the fins (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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Mark Henry |
Jan 16 2005, 06:10 PM
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#20
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Nice way for a /6 snob newbie to introduce himself
(IMG:http://www.914world.com/bbs2/html/emoticons/finger.gif) Bet it's Alfred (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif) |
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