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11-06-2013
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#1 |
Join Date: Dec 2007
Location: Fremont, CA
Posts: 3,088
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A question about narrowing a stock cast wheel.
Can a 1991 9 inch wheel be narrowed?Id like to look into having a set narrowed down to 17-7 and 17-8.I know a cast wheel can be sliced and welded back together but is there the right circumference in the barrel of this wheel that it can be cut,narrowed and welded back together?Im looking at 5-1/8 back spacing on the 17-7 and 5-5/8 back spacing on the 17-8.Thanks.
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11-06-2013
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#2 |
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Join Date: Feb 2011
Location: Salinas, Ca
Posts: 162
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Re: A question about narrowing a stock cast wheel.
GM made a 17x8 saw blade wheel, used on the base 91 Vette, on the front of a standard model.
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11-06-2013
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#3 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,188
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Re: A question about narrowing a stock cast wheel.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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11-06-2013
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#4 |
 Join Date: Apr 2004
Location: Atlanta, GA
Posts: 2,168
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Re: A question about narrowing a stock cast wheel.
The 96 GS convertible also had a 17x8, 5 spoke front & 17x9.5, rear
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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11-06-2013
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#5 | |
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Join Date: Oct 2004
Posts: 1,889
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Re: A question about narrowing a stock cast wheel.
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Weldcraft does excellent work I've seen there "widening" on a street vehicle with minimal weights. Might have balanced better than some after-market wheels because it's part of their procedure. I've seen some of their "narrowed" product that was used as "skinnies". There should be similar vendors in various parts of the country but like some "specialty shops" they don't have a "web -presence" and aren't interested in one. They have all they can do - word of mouth! You can only remove material from the barrel inboard of the wheel mounting flange. A 9.5" wheel has a 7.4" BS approximately (each will vary) and it's also 10.5" wide so if you're looking at removing 2.275 from the wheel barrel. That would give you a wheel that's 7.225 (advertised width) BUT a wheel that's 8.225 "total width" with the back-spacing dimension you mention. I didn't do the rears. Do you need the rear #'s? I believe my math will pass the test but it was done quickly. I'll probably check it again. |
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11-06-2013
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#6 | |
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Join Date: Oct 2004
Posts: 1,889
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Re: A question about narrowing a stock cast wheel.
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11-06-2013
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#7 |
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Join Date: Oct 2004
Posts: 1,889
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Re: A question about narrowing a stock cast wheel.
For the rear using your BS numbers I believe you would end up with a 7.725 (advertised width) with a total wheel width of 8.725.
Now if you're just interested in 17 X 7 and a 17 X 8 wheel you remove 2.5 from the one and 1.5 from the other and end up with a back spacing of 4.9 on one and 5.9 on the other. **** The only thing you need to remember when calculating is you're removing from "total wheel width" and NOT the advertised width. Last edited by WVZR-1; 11-06-2013 at 06:43 PM. |
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11-06-2013
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#8 | |
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Join Date: Dec 2007
Location: Fremont, CA
Posts: 3,088
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Re: A question about narrowing a stock cast wheel.
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11-07-2013
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#9 |
  
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,147
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Re: A question about narrowing a stock cast wheel.
What are you upto Jeff?
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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11-07-2013
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#10 | |
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Join Date: Oct 2004
Posts: 1,889
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Re: A question about narrowing a stock cast wheel.
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Linear Mode
