Give me a lesson on adj. tq arms and panhard rods... need to know
Thread Starter
Registered User
Joined: Feb 2004
Posts: 499
From: Carmel IN
Give me a lesson on adj. tq arms and panhard rods... need to know
Well I just ordered my adj. tq arm and panhard rod.. BMR... and I havent gotten it in yet, but i am curious how to adjust them and to what degree and stuff... also how do you tell the degrees?
Registered User
Joined: Dec 1969
Posts: 4,950
From: San Diego, CA
BMR has installation instructions on their website that include how to set the pinion angle.
http://www.bmrfabrication.com/instructions/ta001.htm
http://www.bmrfabrication.com/instructions/ta001.htm
Registered User
Joined: Feb 2001
Posts: 1,450
From: Belleville, IL
Panhard rod is just adjusted to center the axle in the car. Follow BMR's instructions on setting pinion angle and you'll be fine on that. Just make sure you take measurements off the pinion, not the driveshaft.
Registered User
Joined: Oct 2001
Posts: 1,007
From: Folsom, CA, USA
BMR's instructions on adjusting pinion angle have been wrong since he put them up, which might be one reason we keep getting questions. I have a page at http://www.go-fast.org/z28/pinionangle.html that's correct.
Dave
Dave
Registered User
Joined: Feb 2001
Posts: 1,450
From: Belleville, IL
How is BMR's wrong?
From go-fast.org...
From BMR...
Their description of how to subtract the values is a little confusing though. Pinion angle = DS angle - Rear end angle.
Disregard what I babbled about pinion and driveshaft measuring...I'm a tard.
From go-fast.org...
Put angle finder on driveshaft, lining it up along the very bottom. Read angle = DS°
Put angle finder along flat bracket along bottom of TA. Read angle = PA°
Calculate TPA° = DS°-PA°
This value, TPA° is your pinion angle. It doesn't really matter what the actual value of DS° or TA° is, because they're dependent on the angle your car is currently jacked up to (or the angle of your floor or lift). The difference between them is the critical number. Crank the adjuster to shorten or lengthen the lower portion of the arm, to set the angle to whatever value you want to use, then tighten down the jam nuts and the two through the rod ends.
Put angle finder along flat bracket along bottom of TA. Read angle = PA°
Calculate TPA° = DS°-PA°
This value, TPA° is your pinion angle. It doesn't really matter what the actual value of DS° or TA° is, because they're dependent on the angle your car is currently jacked up to (or the angle of your floor or lift). The difference between them is the critical number. Crank the adjuster to shorten or lengthen the lower portion of the arm, to set the angle to whatever value you want to use, then tighten down the jam nuts and the two through the rod ends.
-Place angle finder on the driveshaft and record the angle. Now place the angle finder on the rear end torque arm mounting plate and record the angle.
- Subtracting one angle from the other results in your pinion angle.(Ex: -2 rear end angle subtracted from 0 driveshaft angle = -2 degrees)
- Turn adjuster to achieve the desired angle.
- Subtracting one angle from the other results in your pinion angle.(Ex: -2 rear end angle subtracted from 0 driveshaft angle = -2 degrees)
- Turn adjuster to achieve the desired angle.
Disregard what I babbled about pinion and driveshaft measuring...I'm a tard.
Last edited by mongse_1; Jun 11, 2004 at 10:38 AM.
Registered User
Joined: Oct 2001
Posts: 1,007
From: Folsom, CA, USA
Well he doesn't say what side of the car he's looking at when he measures these angles, so that's a 50/50 chance of guessing wrong, and then he states that -2 subtracted from zero = -2, which is wrong. Basically you could get it right or wrong from his instructions, there's just not enough information there.
Dave
Dave
Registered User
Joined: Oct 2001
Posts: 1,007
From: Folsom, CA, USA
Originally posted by mongse_1
I was in the middle of editing my above post too.
I was in the middle of editing my above post too.
Dave
Registered User
Joined: Feb 2001
Posts: 1,450
From: Belleville, IL
Originally posted by LPEdave
That's the beauty of this MB sending mail - when you get someone's reply, it's pretty much instantaneous - no chance to correct anything! I don't know the number of times I've thought "oh crap, I really need to change that post fast!"
Dave
That's the beauty of this MB sending mail - when you get someone's reply, it's pretty much instantaneous - no chance to correct anything! I don't know the number of times I've thought "oh crap, I really need to change that post fast!"
Dave
I get that a lot between 7am & 9am when I take my first trip to the coffee machine. 
Thread
Thread Starter
Forum
Replies
Last Post
carguyshu
Parts For Sale
20
Jan 22, 2017 11:19 AM
Trevor98ramair
Drag Racing Technique
1
Jul 31, 2002 02:43 PM