Do I need to resurface my Flywheel? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

slider2828 · 08-01-2006, 05:35 PM

Hey Guys:

The flywheel is like 6 months old. It is a fidanza flywheel and it maybe has like 6k miles on it. How do I check if I need to replace the face of the flywheel or not?

Has anyone ever replaced the face on it? If so, was it hard and were there any instructions included in the face?

-Ken

boosteds13 · 08-01-2006, 05:42 PM

Quote:

Originally Posted by slider2828

Hey Guys:

The flywheel is like 6 months old. It is a fidanza flywheel and it maybe has like 6k miles on it. How do I check if I need to replace the face of the flywheel or not?

Has anyone ever replaced the face on it? If so, was it hard and were there any instructions included in the face?

-Ken

Hot spots, cracks or warpage. If all of that is ok, then its fine. With 6k miles on it, unless you were slipping the clutch a lot it should be fine.

Silverbullet · 08-02-2006, 09:44 AM

shouldn't the flywheel be resurfaced every time a new clutch is put in?

There are hotspots on my TODA flywheel. Is that a negative thing?

**Phlip** · 08-02-2006, 09:46 AM

I suggest resurfacing, do it once the right way, instead of doing it wrong once only to have to do it all over.

slider2828 · 08-02-2006, 10:44 AM

Hot spots usually means you have dropped the clutch more than slipping the clutch if iirc, its just normal but does mean you do need to get the flywheel resurfaced.

S13Eye · 08-02-2006, 10:52 AM

There most likely isn't a need to resurface it. Resurfacing is usually done because a flywheel wears much like a brake rotor. Over time grooves develop in the flywheel and the surface needs to machined so its all even. It also removes any warping. This allows maximum surface area contact with the friction disk, and a mating surface for the clutch to break in on.

Check the flywheel for warping with a straight edge and some feeler gauges. Then inspect the surface for gouging, grooves, and cracks. If thats all fine, take some fine grit sand paper and scuff the flywheel in a non-dirrectional pattern, then wash it with soap and water - not brake cleaner - soap and water!

Remember to replace the pilot bushing. Don't cheap out on a $1.50 piece of brass.

Hot spots are usually caused by 'dropping' the clutch. The discolored areas have been overheated and their chemical and physical properties have changed. The discolored metal now has a different friction coefficient than the rest of the flywheel. I would get the flywheel resurfaced .002" - .008" or whatever it takes to cut off the surface layer. If the hot spots are still there after surfacing, just live with them.

PhilthyS13 · 08-02-2006, 12:56 PM

Any time you replace the clutch, you should resurface your flywheel. In the case of the fidanza, just buy a new face - they're like 70 bucks. I replaced mine and had no problems, it's pretty straightforward. The only problem I had was figuring out if I had 20 or 18 screw holes, because my transmission was still in the car. Turns out you have to buy both, so that problem was solved. Do you have 18 or 20? I have an extra 20 if you need it.

aznpoopy · 08-02-2006, 01:26 PM

^ yep

you don't resurface a fidanza... you just buy a new contact plate and slap it on.

slider2828 · 08-02-2006, 02:33 PM

Are there any torque specs to the screws and how many screws do I need?

Jung918 · 08-31-2006, 09:51 AM

Quote:

Originally Posted by slider2828

Are there any torque specs to the screws and how many screws do I need?

Just e-mail Fidanza.

redsuns3838 · 08-31-2006, 02:59 AM

Go DL the FSM and check, im sure its in there.

08-01-2006, 05:35 PM	#1
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Do I need to resurface my Flywheel? Hey Guys: The flywheel is like 6 months old. It is a fidanza flywheel and it maybe has like 6k miles on it. How do I check if I need to replace the face of the flywheel or not? Has anyone ever replaced the face on it? If so, was it hard and were there any instructions included in the face? -Ken

08-02-2006, 09:46 AM	#4
Phlip Yes, I look like that Join Date: Mar 2002 Location: In my supervillain's lair Posts: 27,980 Trader Rating: (19) Rides Gallery: Phlip Feedback Score: 19 reviews	I suggest resurfacing, do it once the right way, instead of doing it wrong once only to have to do it all over. __________________ Weirdo And I write too!

08-02-2006, 10:44 AM	#5
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Hot spots usually means you have dropped the clutch more than slipping the clutch if iirc, its just normal but does mean you do need to get the flywheel resurfaced.

08-02-2006, 10:52 AM	#6
S13Eye Zilvia Member Join Date: Feb 2006 Location: Los Angeles Age: 40 Posts: 190 Trader Rating: (0) Feedback Score: 0 reviews	There most likely isn't a need to resurface it. Resurfacing is usually done because a flywheel wears much like a brake rotor. Over time grooves develop in the flywheel and the surface needs to machined so its all even. It also removes any warping. This allows maximum surface area contact with the friction disk, and a mating surface for the clutch to break in on. Check the flywheel for warping with a straight edge and some feeler gauges. Then inspect the surface for gouging, grooves, and cracks. If thats all fine, take some fine grit sand paper and scuff the flywheel in a non-dirrectional pattern, then wash it with soap and water - not brake cleaner - soap and water! Remember to replace the pilot bushing. Don't cheap out on a $1.50 piece of brass. Hot spots are usually caused by 'dropping' the clutch. The discolored areas have been overheated and their chemical and physical properties have changed. The discolored metal now has a different friction coefficient than the rest of the flywheel. I would get the flywheel resurfaced .002" - .008" or whatever it takes to cut off the surface layer. If the hot spots are still there after surfacing, just live with them.

08-02-2006, 12:56 PM	#7
PhilthyS13 Zilvia Junkie Join Date: Jun 2005 Location: N/A Age: 46 Posts: 345 Trader Rating: (4) Feedback Score: 4 reviews	Any time you replace the clutch, you should resurface your flywheel. In the case of the fidanza, just buy a new face - they're like 70 bucks. I replaced mine and had no problems, it's pretty straightforward. The only problem I had was figuring out if I had 20 or 18 screw holes, because my transmission was still in the car. Turns out you have to buy both, so that problem was solved. Do you have 18 or 20? I have an extra 20 if you need it.

08-02-2006, 01:26 PM	#8
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 44 Posts: 5,013 Trader Rating: (1) Feedback Score: 1 reviews	^ yep you don't resurface a fidanza... you just buy a new contact plate and slap it on.

08-02-2006, 02:33 PM	#9
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Are there any torque specs to the screws and how many screws do I need?

08-31-2006, 02:59 AM	#11
redsuns3838 Zilvia Addict Join Date: Nov 2004 Location: dog town Posts: 969 Trader Rating: (0) Feedback Score: 0 reviews	Go DL the FSM and check, im sure its in there.