Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering> Pinion angles...
User Name
Password
lost password?   |   register now

Thread: Pinion angles... Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
01-05-2005 06:07 PM
Canzus What lead me to the problem was the vibration
when I got on it, wicked doesn't begin to come
close to discribing it... So for my lunch hour
today I spent a bit of time gathering data at
work today, basicly going around measuring
pinion angles of various vehicles in the parking
lot. Most of them were stock, but a couple are
somewhere between mild and wild street cars,
one of them is the equivilent of the Capri, it's
a mid '80s Mustang with a 347, T5, and 3.70:1
gearing, his pinion is set at 6* down, while the
tranny is 2.5* down, so I think I'm on the right
track, all I have to do is find/build a 13* shim,
I'll let you know how it goes...

SteveL
01-05-2005 08:07 AM
Centerline
Re: pinion angle

Quote:
Originally posted by bracketeer
pinion angle should be pointed down 2 to 5 deg depending on horsepower. when you launch the car the pinion should come up in direct line with the drive shaft.
i have read several articles saying both pinion angles should be the same. i am not going to argue the point. all the drag racers i know all set the rear angle and don't worry about the front one. your choice.
This is true for a "RACE" car but for the street the angles should be the same. If not you'll be wearing out "U" joints on a regular basis, not to mention other problems caused by the vibrations given off by the misalignment.

For street use the angles should be parallel. If the trans angle is 3* down the pinion angle should be 3* up as in this drawing from the Inland Empire Driveline web site.



Centerline
01-04-2005 09:12 PM
poncho62 Drag cars are set up for constant acceleration and axle twist................street cars are not.
01-04-2005 08:45 PM
bracketeer
pinion angle

pinion angle should be pointed down 2 to 5 deg depending on horsepower. when you launch the car the pinion should come up in direct line with the drive shaft.
i have read several articles saying both pinion angles should be the same. i am not going to argue the point. all the drag racers i know all set the rear angle and don't worry about the front one. your choice.
01-04-2005 08:44 PM
poncho62 The pinion angles should be the same at both ends of the driveshaft.

Are you getting any vibration or "U" joint wear?
01-04-2005 08:37 PM
Canzus
Pinion angles...

I bought a used/abused '76 Capri II with a 289/T5/4.11:1
8" Ford, but the idiot previous owner screwed up the rear
end install something serious. He had the pinion pointing
at the tranny, it's about 7 degrees up, and the tranny is
about 2 degrees down...

I'm looking at resetting the pinion to about 5 degrees
down, but it may not be enough...

Thoughts??

SteveL

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 04:43 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.