Flywheel weight - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-28-2008, 11:07 PM   #1
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jun 2007
Location: Chambersburg, Pennsylvania
Posts: 882
Thanks: 0
Thanked 0 Times in 0 Posts
putertopia is on a distinguished road
Default Flywheel weight

What does the flywheel weigh on our 3800s? I'm assuming * I, * II, l67/36s are same fws.
putertopia is offline   Reply With Quote
Old 04-28-2008, 11:45 PM   #2
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

Well, it is actually a flex plate, since all our cars are automatic transmission. The flex plate weighs maybe five pounds. But the rotating mass would include the torque converter full of trans fluid bolted to the flex plate and there is another, what -- 15 or so lbs? Do you need to know the exact weight of the flex plate?
bill buttermore is offline   Reply With Quote
Old 04-28-2008, 11:51 PM   #3
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jun 2007
Location: Chambersburg, Pennsylvania
Posts: 882
Thanks: 0
Thanked 0 Times in 0 Posts
putertopia is on a distinguished road
Default

No, was just curious. Friend w/ 1.8T Audi TT'* motor takes forever to wind down when it'* revved... and he said his flywheel was 22 lbs and I said that'* probably why because it takes a bit to rev up too. Mine'* pretty much instant compared to his. So not looking for exact spex.
putertopia is offline   Reply With Quote
Old 04-29-2008, 12:18 AM   #4
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Add the weight of the harmonic balancer and crank/rods/pistons into that.

It'* the whole rotating assembly that matters. In our case, that ALSO includes the camshaft and balance shaft, as well as both timing gears, etc.
willwren is offline   Reply With Quote
Old 04-29-2008, 02:44 AM   #5
Member
Posts like a V-Tak
 
Join Date: Jan 2008
Location: Buffalo, NY (soon to be Columbia, SC)
Posts: 60
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabre in Buffalo is on a distinguished road
Default

The hanging revs in a manual car have to do with emissions. Keeps the cat at a steadier temperature when it'* receiving a steady stream of exhaust in between shifts.

For your friend, a lighter-weight flywheel and lighter-weight pulleys would make the revs drop faster in between shifts. At least they did on my old Hyundai Elantra with a stick.
LeSabre in Buffalo is offline   Reply With Quote
Old 04-30-2008, 02:11 AM   #6
Senior Member
Posts like a Turbo
 
Join Date: Oct 2006
Location: Whitewater, Wisconsin
Posts: 319
Thanks: 0
Thanked 0 Times in 0 Posts
nicklikesmilk is on a distinguished road
Default

well, manual cars have an actual flywheel, instead of our flexplate, and a flywheel is pretty much a solid flexplate that'* about 3x as thick...so a lot more metal in there than our quasi-porous flexplates.
nicklikesmilk is offline   Reply With Quote
Old 04-30-2008, 08:45 AM   #7
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Right. But we have a torque converter spinning with it, they don't.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Flywheel question ?? Rlehi General GM Chat 5 06-06-2015 12:02 PM
Flywheel Inspection Cover hibrad2005 1987-1991 6 09-29-2007 06:24 PM
Balanced flywheel? F14CRAZY Performance, Brainstorming & Tuning 8 12-04-2006 01:47 PM
flywheel bent? armyguy2us Performance, Brainstorming & Tuning 3 05-28-2004 01:08 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:10 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.