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#1 |
Registered Member
Join Date: Mar 2002
Location: Ohio
Posts: 54
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![]() So, I've been trying to convert my 79 stang into a manual for 8 months now. I got all the parts in the summer but couldnt do it because the "sellar" never mentioned that 2nd gear is shot. Then I went back to school where I couldnt do it. I got home for spring break and dropped the C4 and started bolting things up. Thats when I realized that 2/6 of the taps in the flywheel were completley stripped. I guess the "sellar" didnt realize that you only need to torque them down to less than 30 ftlbs.
Do you think I can drill out the holes another 16th bigger and put threads in em to save this $240 billet flywheel? Or did he sell me a worthless piece garbage & should I just go and throw it through his front window? ~Mark
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1979 Mustang ... 12K Holley 600 CFM 4 bbl Edlebrock Performer RPM Comp Cam 8.8 Rear end with posi from 88 stang Next Projects AFR Heads Stroker Crankshaft and new Pistons T5 Runs 15.0 now, need more traction Last edited by SurfaRiver; 03-19-2005 at 12:49 PM.. |
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#2 |
Rat Killer
Join Date: Aug 2002
Location: Cold ass Ohio
Posts: 1,143
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![]() If you only drill out the bad holes, the big expensive billet flywheel won't be balanced anymore. Drill them all, and you MIGHT be OK. Have to drill bigger holes in your pressure plate too (to fit the bigger bolts through it).
Personally I'd throw it through his window anyways, that sounds like more fun.
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d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply..... ![]() |
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#3 |
Registered Member
Join Date: Jun 2001
Location: butler pa
Posts: 303
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![]() i dont think id chance any type of failure in that area considering the potential cons jmo
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92lx wannabe saleen |
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#4 |
Registered Member
Join Date: Mar 2002
Location: Ohio
Posts: 54
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![]() do you mean dont try to drill em out because if it doesnt work it'll mess up the rest of the rest of the drivetrain or I might as well try it because otherwise its goign to the scrap heap?
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1979 Mustang ... 12K Holley 600 CFM 4 bbl Edlebrock Performer RPM Comp Cam 8.8 Rear end with posi from 88 stang Next Projects AFR Heads Stroker Crankshaft and new Pistons T5 Runs 15.0 now, need more traction |
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#5 |
Registered Member
Join Date: Jun 2001
Location: butler pa
Posts: 303
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![]() im no expert but i would guess that you could end up ruining more than just the flywheel by altering it unbalancing it as mentioned before could lead to failure of engine internals and or trans internals i just wouldnt take a chance with a part that im not completely comfortable with espc a flywheel id buy a stock replacment for now or save up and put a new one in i found a brand new sfi app billet fw on ebay a while back for $100 shipped its your call im just giving my op
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92lx wannabe saleen |
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#6 |
Ride Hard
Join Date: Oct 2000
Location: Wyoming IL
Posts: 1,094
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![]() Or you can try and go by your local machine shop, show him what you got and see what he says. They can always try to fix it and check the balnace of it afterwards. Just my thoughts.
Ryan
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65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored |
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#7 |
Registered Member
Join Date: Jan 2001
Location: Moline Il
Posts: 901
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![]() The factory bolts are a metric thread similiar to 5/16. I dont think a 3/8 bolt would fit very good in the pressure plate. Theres not a whole lot of room there and the head of a 3/8 bolt might be too big to tighten down properly.
Andy
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88 coupe 91 LX NMRA Pure Street 5120 |
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#8 |
Registered Member
Join Date: Mar 2002
Location: Ohio
Posts: 54
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![]() well, we're gonna give it a go today. Looked at the bolt head size, it looks like if I use header bolts (smaller heads) it will clear the clutch just fine. I'll post in 12 hours or so and let ya know how it goes *fingers crossed*
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1979 Mustang ... 12K Holley 600 CFM 4 bbl Edlebrock Performer RPM Comp Cam 8.8 Rear end with posi from 88 stang Next Projects AFR Heads Stroker Crankshaft and new Pistons T5 Runs 15.0 now, need more traction |
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#9 |
Registered Member
Join Date: Sep 1998
Location: Oviedo, FL
Posts: 992
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![]() I don't see why you couldn't drill them out and use Grade 8 bolts. If the head is a problem, how about socket head bolts [allen bolts]??
If you don't think you can do it, find a local machine shop. I wouldn't throw it away for that.
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"Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic |
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#10 |
Registered Member
Join Date: Mar 2002
Location: Ohio
Posts: 54
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![]() I did it, it worked like a charm
![]() 2 years planning one bad deal lots of repairs working 5.0L mustang with 5 speed
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1979 Mustang ... 12K Holley 600 CFM 4 bbl Edlebrock Performer RPM Comp Cam 8.8 Rear end with posi from 88 stang Next Projects AFR Heads Stroker Crankshaft and new Pistons T5 Runs 15.0 now, need more traction |
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#11 |
Domestic Rice really sucks!
Join Date: Apr 2002
Location: KY
Posts: 973
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![]() I got a hold of a flywheel in a similar situation once. The threads in a stock flywheel are 8mm x 1.25. Very similar to a 5/16-18 that Andy mentioned. The threads are not tapped very deep from the factory. You can go get a tap and tap the holes all the way through and get longer bolts. Just make sure the bolt doesn't stick very far out of the back of the flywheel. Works like a charm.
Glad you got her fixed, SurfaRiver.
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