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02-23-2005, 05:59 PM | #1 |
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clutch dowel pins
I just got my flywheel back from the machine shop. Had it resurfaced and neutral balanced. However, I noticed when I took it to them that one of the dowel pins for the clutch was broken. Mentioned it to the machinist, he didnt have one to replace. So now I need a dowel pin. I have two on the flywheel. Any ideas on where to get one? Ford dealer I suppose. Anyone have a part number or recommendations.
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1983 mustang, 393 cubic inch stroker small block, victor jr heads and intake, gold race 1.6 roller rockers. comp cam 304, 244@ .050. .576" hydralic retro roller cam,lunati rods. block was o-ringed,10:1 forged pistons, speed pro fit fit rings, clevite bearings,msd distributor and igniton,be cool huge radiator, black lite electric fan, march underdrive pulleys, mildon deep sump oil pan, mac 1 3.4" long tube headers, 3" dr gas x-pipe and mac exhaust,ARP bolts. car weighs 2900 lbs w/out driver, sub frames, weld wheels, mickey thompson sportsman pro 26 x 10.5 x 15's,#8 fuel line steel braided |
02-23-2005, 06:22 PM | #2 |
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Re: clutch dowel pins
Yep, go to the dealer and get new set. They're only a few bucks. Do not put on the clutch without all three.
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Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!" |
02-23-2005, 07:26 PM | #3 |
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Re: clutch dowel pins
Some after market flywheels dont even have dowel pins so why are the stock ones so important? My billet flywheel doesnt have them or a place for them so I just bought high grade bolts and used some locktite.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
02-23-2005, 07:40 PM | #4 |
Factoy Five Roadster
Join Date: May 2000
Location: Sevier Co,Tennessee
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Re: clutch dowel pins
Dowel pins center the pressure plate to the flywheel. Without them you will pick up a vibration.
Ford dealer 3 bucks. * Put in freezer overnight then install* If its not wanting to go in.
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Frank |
02-23-2005, 10:13 PM | #5 |
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Re: clutch dowel pins
I also just realized that centerforce dual friction clutch doesnt come with pilot bearing or "clutch alignement" tool. What a bunch of crock. Any suggestions on getting one, the alignment tool? I can get a pilot bearing.
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1983 mustang, 393 cubic inch stroker small block, victor jr heads and intake, gold race 1.6 roller rockers. comp cam 304, 244@ .050. .576" hydralic retro roller cam,lunati rods. block was o-ringed,10:1 forged pistons, speed pro fit fit rings, clevite bearings,msd distributor and igniton,be cool huge radiator, black lite electric fan, march underdrive pulleys, mildon deep sump oil pan, mac 1 3.4" long tube headers, 3" dr gas x-pipe and mac exhaust,ARP bolts. car weighs 2900 lbs w/out driver, sub frames, weld wheels, mickey thompson sportsman pro 26 x 10.5 x 15's,#8 fuel line steel braided |
02-23-2005, 10:56 PM | #6 |
Factoy Five Roadster
Join Date: May 2000
Location: Sevier Co,Tennessee
Posts: 1,681
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Re: clutch dowel pins
Auto Zone for tool. They are cheapo plastic and only a few bucks. Usually hanging on a rack/help isle/etc.
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Frank |
02-24-2005, 06:50 AM | #7 | |
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Re: clutch dowel pins
Quote:
Are you absolutely positive on that? Are you sure that the flywheel maker didn't want you to transfer the hole locations and re-locate the dowels? I've never seen a flywheel without dowels. The clearance hole on a 1/4" hole is .040" over-sized. If you take into maximum material conditions and locational tolerances, this means that your clutch could be more than 0.062" off center! Take that 13-lb pressure plate at 5000RPM through a .062" orbit and let me know how much that disturbs your engine balance. Not to mention that the dowels transmit the shear force which is how the clutch transmits the engine power. I've been wrong once or twice before, but I'd bet $1.50 that there's provisions for dowels and the vendor instructions told you to use them.
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Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!" |
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02-24-2005, 08:03 AM | #8 |
Rat Killer
Join Date: Aug 2002
Location: Cold ass Ohio
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Re: clutch dowel pins
You guys got me to thinking, so I just checked my billet SFI flywheel. Bigger-an-life there's dowels in it. I can't imagine a flywheel manufacturer NOT putting them in. Better double check that puppy!
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d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply..... |
02-24-2005, 08:51 AM | #9 |
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Re: clutch dowel pins
All of the stock-type replacement stuff that I have seen has had dowels. I have a couple completely different prototype units that dont use dowels, however they are designed to be used with a shoulder'd bolt. If someone is running a stock type setup without dowels, they are just plain lucky.
Andy
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02-24-2005, 01:29 PM | #10 | |
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Re: clutch dowel pins
Quote:
I did use bolts that had a fat taper just below the head so they kind of self centerd the clutch.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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02-24-2005, 03:06 PM | #11 | |
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Re: clutch dowel pins
Quote:
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02-24-2005, 03:08 PM | #12 | |
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Re: clutch dowel pins
Quote:
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