Pennock's Fiero Forum
  General Fiero Chat
  Changing flywheel

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Changing flywheel by PhatMax
Started on: 04-23-2021 10:35 AM
Replies: 8 (131 views)
Last post by: Patrick on 04-24-2021 04:51 PM
PhatMax
Member
Posts: 241
From: Peotone, IL. USA
Registered: Apr 2006


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-23-2021 10:35 AM Click Here to See the Profile for PhatMaxClick Here to Email PhatMaxSend a Private Message to PhatMaxEdit/Delete MessageReply w/QuoteDirect Link to This Post
Does the flywheel really need to be changed ? Or just cleaned up and rebalance?
IP: Logged
PFF
System Bot
Patrick
Member
Posts: 31530
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 446
Rate this member

Report this Post04-23-2021 12:14 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

There is a maximum amount of material that can be removed, but resurfacing a flywheel is fine. There is some debate whether or not a flywheel shim is then required (equal to the thickness of metal removed), but they're inexpensive and at least offer peace of mind.
IP: Logged
fierofool
Member
Posts: 12015
From: Auburn, Georgia USA
Registered: Jan 2002


Feedback score:    (13)
Leave feedback





Total ratings: 151
Rate this member

Report this Post04-23-2021 07:55 PM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
I've replaced a number of clutch kits over the years and only once had to replace one. It was badly heatchecked with a lot of hairline cracks. My policy is that as long as they aren't scored or have cracks and I can take an orbital pad sander and polish off the blue heat spots, I simply reuse it. Inspect the starter ring teeth, too.
IP: Logged
Patrick
Member
Posts: 31530
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 446
Rate this member

Report this Post04-23-2021 08:20 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fierofool:

My policy is that as long as they aren't scored or have cracks and I can take an orbital pad sander and polish off the blue heat spots, I simply reuse it.


Geez... with all the hassle it is to change a clutch in a Fiero, I would never do that.

I say either have the flywheel resurfaced properly, or get a new one.
IP: Logged
fierofool
Member
Posts: 12015
From: Auburn, Georgia USA
Registered: Jan 2002


Feedback score:    (13)
Leave feedback





Total ratings: 151
Rate this member

Report this Post04-23-2021 11:01 PM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
I guess I've been lucky. Never had a problem.
IP: Logged
theogre
Member
Posts: 29861
From: USA
Registered: Mar 99


Feedback score: N/A
Leave feedback





Total ratings: 557
Rate this member

Report this Post04-24-2021 12:25 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fierofool:
I guess I've been lucky. Never had a problem.
Me as well...
I don't to anything to the flywheel most times other then light sanding to knock off rusting and use Brake Clean.
Nearly all clutch fails for me is diaphragm spring pressure plates used in many cars not just Fiero because they break from "wearing out" in heavy traffic.
Any small wreck etc and you can spend Hours in Stop & Go traffic on the Surekill (Schuykill) Expressway and many others. NJTP below Exit 4 is giant pain too. "Side roads" either gets jammed too or takes you so far out of the way isn't worth bothering.

Is why I laugh at most people saying stick cars are "fun."

If a F-wheel has a little wear, can be turned sim to Brake parts. And most times won't need rebalance or a "shim."
If has any cranking or big wear problems then most time replacing is needed.
Are ways fix major wear problems but often many times more the cost then replacing w/ new or good use F-wheel for cars.

Is spec's on turning same as brake parts but I don't have them easy to post.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)


The Ogre's Fiero Cave

IP: Logged
Patrick
Member
Posts: 31530
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 446
Rate this member

Report this Post04-24-2021 12:35 AM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
.
For optimum grip and maximum clutch disc durability, it's imperative that all clamping surfaces are perfectly flat (and smooth).

 
quote
Originally posted by fierofool:

I guess I've been lucky. Never had a problem.


Charlie, perhaps you treat your Fiero(s) very gently. I autocrossed a couple of mine for quite a few years, and I drove them hard. I didn't wish to be replacing clutches on a regular basis, so any car that I replace the clutch in, I have the flywheel machined/resurfaced. I replaced the clutch in my Formula eight years ago (with a run of the mill LuK unit), and it still grabs perfectly.... despite all the "abuse" I've put it through.

[This message has been edited by Patrick (edited 04-24-2021).]

IP: Logged
fierofool
Member
Posts: 12015
From: Auburn, Georgia USA
Registered: Jan 2002


Feedback score:    (13)
Leave feedback





Total ratings: 151
Rate this member

Report this Post04-24-2021 08:32 AM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
I don't put mine through the rigors of autocrossing, but Run For The Hills and associated scouting runs gives them a continuous 6-8 hour pummeling. I don't spin tires, slam gears, or the like, but I do technically abuse them. I always make sure my clutch is fully engaged before pouring in the juice. Lots of up and down shifting on the runs. I try to give the V8's and Superchargers a run for their money.
IP: Logged
Patrick
Member
Posts: 31530
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 446
Rate this member

Report this Post04-24-2021 04:51 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

Hard launches, over and over again, are probably what take the greatest toll on clutches.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock