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Author
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Topic: pinoun angle help
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stoker
Gearhead Posts: 159
From: folsom,cal,
Registered: Jan 2002
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posted 04-09-2003 10:32 PM
   
finally checked it and came up with -1.if trany shaft was -1.5 and pinion was +.5 did i figure right?i was thinking about trying two degree shim to give me -3 degrees pin angle.this is mostly street driven (like it was stolen).what metal aluminum or steel for shims?
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 04-09-2003 10:56 PM
You want -3 degrees on the pinion, not the drive shaft.
Place the angle finder on the third member behind the yoke.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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stoker
Gearhead Posts: 159
From: folsom,cal,
Registered: Jan 2002
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posted 04-09-2003 11:34 PM
this is how came up with -1 degree.i removed driveshaft and placed angle finder on tranny output shaft seal and factored that it is 90 degrees to trany shaft which was -1.5 degrees then i placed angle finder on pinion yoke and factored the 90 degree.it read +.5 so the difference should be my pinion angle (-1) correct?
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afret
Gearhead Posts: 180
From: Lancaster, CA
Registered: Feb 2003
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posted 04-09-2003 11:48 PM
Sounds like your math is right on target.
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Ryan Wilke
Gearhead Posts: 2060
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 04-10-2003 08:50 AM
Stoker,
I'd steer away from aluminum. I had some aluminum wedges and they started to "flatten" out. I went to steel. If you decide to make-your-own, remember to include the spring center bolt hole (to keep it from squirting out) and to make them as long as your spring perch. Just my 2 cents - Good Luck!
Ryan 
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stoker
Gearhead Posts: 159
From: folsom,cal,
Registered: Jan 2002
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posted 04-10-2003 06:15 PM
thanks for replys,my reverse eyelet springs are five leaf and brand new.just wonder how many degrees they let pinion swing as to how much wedge i want to use.car has ran 12.38 with limited traction.again if anyone has any advise,please tell
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stoker
Gearhead Posts: 159
From: folsom,cal,
Registered: Jan 2002
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posted 04-10-2003 06:17 PM
oh alex,as long as you put angle finder on yoke when it is vertical wouldnt it be the same as on third member?
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 04-10-2003 07:59 PM
Kevin,Just make the pinion point 4 degrees down from the straight line of the driveshaft. Maybe even a little more depending on how much gap you'll have between the traction bar's snubbers and the leafs. Remember you don't want the pinion to rise above the driveshaft's line on launch, just come up to straight. Good luck, and yes steel shims are best. SteveW
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