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  Where can I get a quality manual flywheel for my 3.4DOHC?

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Where can I get a quality manual flywheel for my 3.4DOHC? by sspeedstreet
Started on: 07-22-2013 09:48 PM
Replies: 5 (126 views)
Last post by: sspeedstreet on 07-23-2013 03:28 PM
sspeedstreet
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Report this Post07-22-2013 09:48 PM Click Here to See the Profile for sspeedstreetClick Here to Email sspeedstreetSend a Private Message to sspeedstreetEdit/Delete MessageReply w/QuoteDirect Link to This Post
All I can find is cheap Chinese made. Where can I find a steel or better quality iron flywheel?

~Neil
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ltlfrari
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Report this Post07-23-2013 07:27 AM Click Here to See the Profile for ltlfrariClick Here to visit ltlfrari's HomePageClick Here to Email ltlfrariSend a Private Message to ltlfrariEdit/Delete MessageReply w/QuoteDirect Link to This Post
When I did mine I got an 88 Fiero flywheel gt from GMPARTSDIRECT. No idea on country of origin though.

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fieroguru
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Report this Post07-23-2013 08:59 AM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
I would try to save your current flywheel.

The aluminum likely "creeped" into the gap between the bolt hole walls the the crankshaft flange bolts. You can greatly reduce the chance of that happening again if you press steel sleeves into the bolt holes. The sleeves would need to be about 1/32" shorter than the hub thickenss to ensure you clamp the alumimum and don't bottom out on the sleeves. Once done, the sleeves would support the walls of the bolt holes and greatly reduce the chance for any further creep.

I would also try to find some hardened washers that will fit in the resessed bores. These washers would spread the contact load across a larger area vs the small stepped ring on the underside of the bolt head. Just need to check for clearance between the bolt heads and the clutch disk hub.

[This message has been edited by fieroguru (edited 07-23-2013).]

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sspeedstreet
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Report this Post07-23-2013 11:11 AM Click Here to See the Profile for sspeedstreetClick Here to Email sspeedstreetSend a Private Message to sspeedstreetEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fieroguru:
I would try to save your current flywheel.

The aluminum likely "creeped" into the gap between the bolt hole walls the the crankshaft flange bolts. You can greatly reduce the chance of that happening again if you press steel sleeves into the bolt holes. The sleeves would need to be about 1/32" shorter than the hub thickenss to ensure you clamp the alumimum and don't bottom out on the sleeves. Once done, the sleeves would support the walls of the bolt holes and greatly reduce the chance for any further creep.

I would also try to find some hardened washers that will fit in the recessed bores. These washers would spread the contact load across a larger area vs the small stepped ring on the underside of the bolt head. Just need to check for clearance between the bolt heads and the clutch disk hub.


This was my first thought when I saw the damaged holes from the loosened flywheel. The different expansion rates of the two metals would make this tricky, tho. Plus, the 1/32" gap would still give a place for the aluminum to flow to.

My current idea would be to bore out the holes to the recess's diameter, press in aluminum sleeves and turn the faces flat. This would eliminate the recessed holes and allow for an AT backing plate to be used to spread the clamping load. Then I could use star washers or tabs or whatever to keep the heads from turning.

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Bruce
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Report this Post07-23-2013 02:11 PM Click Here to See the Profile for BruceClick Here to Email BruceSend a Private Message to BruceEdit/Delete MessageReply w/QuoteDirect Link to This Post
Check to see if the flywheel you need is the same as the stock '88 (internally balanced). If so, I have an extra you can have at no charge. It was made by Beck / Arnley.
bb
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sspeedstreet
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Report this Post07-23-2013 03:28 PM Click Here to See the Profile for sspeedstreetClick Here to Email sspeedstreetSend a Private Message to sspeedstreetEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Bruce:

Check to see if the flywheel you need is the same as the stock '88 (internally balanced). If so, I have an extra you can have at no charge. It was made by Beck / Arnley.
bb


Bruce, I sent you a PM.
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