 Flywheel Question, Is lighter better? |
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| ScottD914 |
 May 31 2010, 07:24 PM
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Member  Group: Members Posts: 69 Joined: 27-December 07 From: New London, CT Member No.: 8,506  |
(IMG:style_emoticons/default/idea.gif) Gentlemen and Ladies;
I've spent the winter rebuilding my 1.8 up to 2142 (or there about). The question I would pose is about the weight of the flywheel I need to purchase. My new Eagle Rods and KB pistons are much lighter than the stock equipment from 1974, does the sum of the mass in the case need to correspond with the mass of the flywheel somehow? I've seen two choices: 17lbs and 12 lbs. Your thoughts? Thanks. ScottD |
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| aircooledtechguy |
Jun 1 2010, 12:58 PM
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The Aircooledtech Guy Group: Members Posts: 1,966 Joined: 8-November 08 From: Anacortes, WA Member No.: 9,730 Region Association: Pacific Northwest |
My experience with lightened flywheels has been with air-cooled VWs. In general:
a lightened flywheel. . . - increases throttle response - revs and decelerates quicker - decreases fuel mileage slightly (less stored inertia) - results in a jerkier ride going through the gears (can be a PITA on a street car) - makes the car "feel" like it has more HP during acceleration a heavier flywheel. . . - allows for smoother, more relaxed gear changes (you don't have to shift quick to be smooth) This is nice for street cars. - increased fuel mileage -revs and decelerates slower I like the feel of a stock flywheel on a street car. I don't care for the jerkier shifting and less fuel mileage that always accompanies a light flywheel. |
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Posts in this topic
ScottD914 Flywheel Question May 31 2010, 07:24 PM
SLITS No May 31 2010, 07:55 PM bandjoey Copied from the Nissan site: se-r.net. Experts?? ... May 31 2010, 08:35 PM tat2dphreak bill's info is correct. a lightened fly is eas... May 31 2010, 09:19 PM J P Stein Let's not forget the inertia provided by a spi... May 31 2010, 09:47 PM bugsy0 What about idle characteristics or other side effe... May 31 2010, 09:58 PM J P Stein Not that I could notice on a 10.5:1 motor Jun 1 2010, 06:22 AM tat2dphreak
not that I've seen either... my idle is smoot... Jun 1 2010, 07:03 AM Vacca Rabite With a lighter flywheel, your engine will spin up ... Jun 1 2010, 07:52 AM pcar916 :agree: with these guys.
I'd do it even thoug... Jun 1 2010, 09:08 AM tat2dphreak I can't comment on Zach's experience... wh... Jun 1 2010, 09:38 AM gandalf_025 In my Corvair days, I was always told "Don... Jun 1 2010, 09:54 AM PRS914-6 Look at a flywheel as a device that "stores e... Jun 1 2010, 10:32 AM Drums66 I think it works better in a racing experience...
... Jun 1 2010, 12:35 PM charliew The only time I want a heavy flywheel is when I am... Jun 1 2010, 03:25 PM ScottD914 :beer2: Thanks Gentlemen for all the great input.... Jun 1 2010, 07:38 PM tat2dphreak hijack:
what carbs are those? a 2l+ should have ... Jun 2 2010, 08:38 AM carr914 This is the Flywheel I like to use on my 6 cylinde... Jun 2 2010, 08:43 AM ScottD914 Yes, I suspected the carbs are under sized. They ... Jun 2 2010, 05:56 PM sean_v8_914 how do you intend to use the car?
this should be ... Jun 2 2010, 06:32 PM ScottD914 No plans to race the thing, but not a daily driver... Jun 3 2010, 07:52 PM
bandjoey Also look for Dellortos. Great carbs Jun 3 2010, 07:59 PM |
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