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05-02-2008
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#1 |
Join Date: Apr 2006
Location: Ideho
Posts: 2,652
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Fidanza Question
For those of you that have replaced your DM Flywheel with a Fidanza, I understand you need to replace the stock bolts with longer ones.
How much longer do they need to be? Stock ones are 7/16" x 20 x 2". Also, where can a person purchase them and the pressure plate bolts? Thanks
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[I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I] |
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05-02-2008
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#2 |
 
Join Date: Jul 2005
Location: Cresson, TX
Posts: 970
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Re: Fidanza Question
I cannot answer your questions but here's a link to the bolts.
http://www.zr1products.com/products.html
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Ron Hanselman Founding Member #80 CM Lifetime Member #1093 1991 #383 Twin Turbo 1993 #099 Ruby, Jeal 368 w/Snake Skinner body 1961 White with Red Int |
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05-02-2008
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#3 |
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Join Date: May 2006
Location: Canada
Posts: 139
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Re: Fidanza Question
You can use 3 packs of torque converter bolts from ARP. I think they are 7/16-20 by 1.25 long. The part number is 230-7303. This is for the flywheel to crank.
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05-02-2008
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#4 | |
Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,396
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Re: Fidanza Question
Quote:
The longer thread engagement is a safety issue. Whereas the stock bolts engaged the cast iron material of the stock flywheel, the Fidanza is aluminum, which is significantly lower in yield. Bottom line...stock bolts, torqued to stock specifications are not engineered properly for use in aluminum. Ron Woods sells a new bolt kit that includes the tap to run the threads through the Fidanza to accomodate longer thread engagement. Expensive, but darn well worth it if you consider the possibilites.
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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05-02-2008
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#5 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,706
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Re: Fidanza Question
Just installed the Fidanza and that's exactly what I did. Got PP bolts from Ron and bought the ARP bolts for the crank. I sppoke to Haibeck about it and uses the stock bolts but for that extra bit of safety, I went the other way. The ARP bolts are actually for a Flexplate but work fine for the Fidanza.
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