Flywheel question
Thread Starter
Heel & Toe
Joined: Jul 2001
Posts: 20
Likes: 0
From: Monroe,NJ USA
Flywheel question
I needed a new flywheel for my 92 6spd so I ended up getting a used(in real good shape) for $150.My question is about the weights around the edge of em.The new flywheel I got has it`s weights in a different spot than my old one.I was told to match the weights on my old one to the same holes on my "new" one. Is this right?
I would think each flywheel is different and changing the weights would throw the balance of it off. Then again I don`t know, thats why I`m asking :D
Thanx guys
[Modified by Gixxer Vette, 3:47 PM 11/8/2003]
I would think each flywheel is different and changing the weights would throw the balance of it off. Then again I don`t know, thats why I`m asking :D
Thanx guys
[Modified by Gixxer Vette, 3:47 PM 11/8/2003]
Drifting
Joined: Sep 2003
Posts: 1,363
Likes: 7
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
Re: Flywheel question (Gixxer Vette)
as I understand it, the weights are for the engine, not the flywheel, so the advice you got was correct (i.e. mark the flywheel to crank, remove, place weights in same relative position, and remount new flywheel with weights in same relative position to the crank as the old flywheel had them).
hope this helps..
:flag
hope this helps..
:flag
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: Flywheel question (theadmiral94)
I respecfully, disagree. Assuming both flywheels are for factory balanced engines, I'd leave the new (used) flywheel alone. If they could all be made the same, weights wouldn't be necessary. They would be made to the proper balance. The different weights on the two flywheels would have been factory installed to meet the same factory balance standard. One took weights here and the other took different weights somewhere else, both to meet a common standard. I may be using an incorrect assumption, here, but based on the info presented...
Good luck, and...
RACE ON!!!
Good luck, and...
RACE ON!!!
Drifting
Joined: May 2003
Posts: 1,979
Likes: 48
From: Lakeport CA
Re: Flywheel question (CFI-EFI)
Actually I just read this in the factory service manual 2 days ago. It said that if you were installing a new flywheel to take the weight from your old one & place it in the new one in the same location. So, it appears the weight is to match your specific crank not the flywheel.
Of course I was in the process of installing an alum. single mass so it didn't apply to me. Just found it interesting.
Of course I was in the process of installing an alum. single mass so it didn't apply to me. Just found it interesting.
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
Re: Flywheel question (Trog)
Oh boy, Time to reveal some weaknesses in my knowledge of LT1 flywheels. I have not seen a dual mass flywheel, yet. When you talk about removing and adding weights, how do you do that? I assumed they were welded on or something like that. My plan was to replace my dual mass with the OEM dual mass flywheel. Now I have to change, add, or remove weights? :confused: Is this a machine shop procedure?
Burning Brakes
Joined: Oct 2002
Posts: 983
Likes: 1
From: Bergen County NJ
Re: Flywheel question (Strick)
The dual mass flywheel has a series of holes drilled into the rear-facing side. The engine is final balanced (at the factory) by installing the "plug" weights into certain holes. When you replace you flywheel you're supposed to install weights into the same corresponding holes in the new flywheel. When installing a used flywheel, you'll have to remove the weights and reinstall them to match your old flywheel. I believe that weights are available pretty cheap in case you damage the old ones, or just need more.
Thread Starter
Heel & Toe
Joined: Jul 2001
Posts: 20
Likes: 0
From: Monroe,NJ USA
Re: Flywheel question (Strick)
Thanx for the help guys. I figured I was on the right track, just wanted a few more opinions :cheers:
Strick,
The weights are little plugs about a 1/4 long.If you were looking at the backside of the flywheel you would see holes around the perimeter of it.Most of the holes will be empty but some have the plugs in the holes.They don`t weld in, if you look at the new ones they have like a 2 fins on the side of em.It makes them wider than the hole.So when you tap em in with the hammer, that will compress making it a tight fit.As for taking in them out, I just drilled them out with my electric drill.I just marked on the bit with tape how far I can go in so I drill past the weight.The weights themselves were $1 each.
[Modified by Gixxer Vette, 9:56 AM 11/9/2003]
Strick,
The weights are little plugs about a 1/4 long.If you were looking at the backside of the flywheel you would see holes around the perimeter of it.Most of the holes will be empty but some have the plugs in the holes.They don`t weld in, if you look at the new ones they have like a 2 fins on the side of em.It makes them wider than the hole.So when you tap em in with the hammer, that will compress making it a tight fit.As for taking in them out, I just drilled them out with my electric drill.I just marked on the bit with tape how far I can go in so I drill past the weight.The weights themselves were $1 each.
[Modified by Gixxer Vette, 9:56 AM 11/9/2003]
