TCP Rack & Pinion and Bumpsteer?

[65 fastback]

I'm replacing my front brakes this winter with the Global West Pro-Vintage Disc Brake kit. The GW kit uses the larger '70 style spindle. My current set up is the stock Kelsey Hays 4 piston set up with stock spindles, a ProMotorSports Engineering bumpsteer kit. I, also, have the TCP manual R&P on the car.

So now I've got to replace my spindle with the larger size '70 spindle, which means I have to replace my tie rod, which means my bumpsteer kit will no longer fit.

So my question is: Do I really need the bumpsteer kit with the TCP R&P? I have heard the the TCP R&P works to eliminate bumpsteer, so can I eliminate the bumpsteer kit all together?

Anyone with experience or similar set-up?

Tim

 

[jerry S]

I'm replacing my front brakes this winter with the Global West Pro-Vintage Disc Brake kit. The GW kit uses the larger '70 style spindle. My current set up is the stock Kelsey Hays 4 piston set up with stock spindles, a ProMotorSports Engineering bumpsteer kit. I, also, have the TCP manual R&P on the car.

So now I've got to replace my spindle with the larger size '70 spindle, which means I have to replace my tie rod, which means my bumpsteer kit will no longer fit.

So my question is: Do I really need the bumpsteer kit with the TCP R&P? I have heard the the TCP R&P works to eliminate bumpsteer, so can I eliminate the bumpsteer kit all together?

Anyone with experience or similar set-up?

Tim

I have your set up, more or less. TCP R&P and GW front suspension (UCAs, LCAs, adjustable strut rods, brake spindles, and Pro-Vintage brakes). I have no bump steer issues whatsoever.

 

[Jester67]

I have your set up, more or less. TCP R&P and GW front suspension (UCAs, LCAs, adjustable strut rods, brake spindles, and Pro-Vintage brakes). I have no bump steer issues whatsoever.

You are talking 65 verses 69 here the 70 spindle has different geometry than the 65 and that is where the bump steer comes from. If you install a 70 spindle on a 65 the likely hood of bump steer will go up. The 67 –70 spindles share the same geometry as the Grenada spindle. You did increase bump steer because there was no geometry change. I would think you would be able to use the “Baer Tracker Bump Steer Adjustable Tie-Rods” to correct the bump steer on the 65 with 70 spindles.

 

[jmenke]

I have the pro motor sports bumpsteer kit with TCP power rack and Granda spindles using stock manual Mustang tie rods on my '66 Mustang.
If I recall correctly (installed some 4 or so years ago), the tie rod mounts to the bumpsteer kit then the bumpsteer kit mounts to the spindle with a saddle that wraps around the spindle arm.
I don't think there will be any issues with the size of the holes in the spindle as the bump steer kit positively locks in place with supplied bolts and saddle.
The only thing you may need to do is file away some of the casting on the arm or open the saddle up a bit (in the pro motor sports instructions).
You should verify that though. My mind must be wasting away...

As far as bump steer difference with the kit you have, you might want to contact the mfg. to see if they made any corrections to the original set-up. You might not need the kit anylonger.

good luck, Jim

 

[Route666]

Guys I was going to start a different thread on this, but it seems to be the same topic, and may help out here anyways.

I want to clarify the different splits in spindles.

There is 65 and 66
67 and 68
69
and 70 - 73 or is it 70 and 71 - 73?

I ask because NPD sells spindles and bearings, etc for 70 - 73 cars and on Street or Track there are Baer brakes listed for 70 cars and for 71-73 cars.

What are the differences there?

 

[Jester67]

http://forums.stangnet.com/showthread.php?t=552233
This link has a better explanation than I can do but the short answer as I understand it is the 64.5-66 are the same the 67 has a different setup for disk brakes but has the same tie rod and rotor mounting rod, the 68-69 are the same the 70 have the same tie rod hole but a larger shaft where the rotor mounts, the 71-73 have a larger tie rod but the same rod size as the 70, the Grenada has the same tie rod and rotor shaft as the 71-73 but different brake mounting. The 67-73 and Grenada’s all have the same geometry with the differences mentioned above there for no bump steer increase. The 64.5 –66 have a different geometry and there for suffer from bump steer when 67-73 or Grenada spindles are used as replacements.
I apologies in advance for any mistakes in spelling and grammar but I think the facts are straight. Again there is a lot of good information in that thread.

 

[grego37]

QUOTE=65 fastback].

So now I've got to replace my spindle with the larger size '70 spindle, which means I have to replace my tie rod, which means my bumpsteer kit will no longer fit.

Anyone with experience or similar set-up?

Tim[/QUOTE]


If you have not yet purchased the Global West set, their source for big spindles has dried up, I've been calling them for months trying to get this kit.
You may want to find a good used set, and buy their partial kit.

if and when you swap to bigger spindles, you dont need to run the bigger tie rod end if you're using the Pro-Motorsports bump steer kit, you just need a longer allen bolt. Im contemplating the same exact swap and got the above info from Pro Motorsports. Their kit also quickens your steering, I like it allot.

I have the TCP rack on a 68 mustang that has the 'Shelby Drop' and cut coils and had bump steer issues until I installed the Pro-M.... bump steer kit. It took me a year to find the problem, (not to mentioned the front tires I ruined) TCP failed to address the bump steer possibilities in their instructions, and never mentioned it in all the phone calls and emails I had with their tech dept.

Keep in mind, mine is a 68 and yours is a 65, you may have different issues and results than I had,
Good luck.

 

[65 fastback]

if and when you swap to bigger spindles, you dont need to run the bigger tie rod end if you're using the Pro-Motorsports bump steer kit, you just need a longer allen bolt. Im contemplating the same exact swap and got the above info from Pro Motorsports.

I have the TCP rack on a 68 mustang that has the 'Shelby Drop' and cut coils and had bump steer issues until I installed the Pro-M.... bump steer kit. It took me a year to find the problem,
Good luck.

Grego,

I already have my GW Pro-Vintage brake kit and I picked up a couple of used '70 spindles at a local salvage yard. I thought the tie rod end had to be larger to go from a '65 to a '70 spindle (am I mistaken here?).

And if I go with a '70 tie rod end, I guess I just need a new allen bolt from PME to reinstall my bumpsteer kit. Is that the information you are getting?

I, also, had bad bumpsteer (after doing the Shelby drop and upgrading my tires) until I installed the PME bumpsteer kit. I have had it on my car for over 10 years now.

Tim

 

[Route666]

Thanks Jester, that sums it up well for me!

 

[65 fastback]

http://forums.stangnet.com/showthread.php?t=552233
This link has a better explanation than I can do but the short answer as I understand it is the 64.5-66 are the same the 67 has a different setup for disk brakes but has the same tie rod and rotor mounting rod, the 68-69 are the same the 70 have the same tie rod hole but a larger shaft where the rotor mounts, the 71-73 have a larger tie rod but the same rod size as the 70, the Grenada has the same tie rod and rotor shaft as the 71-73 but different brake mounting. The 67-73 and Grenada’s all have the same geometry with the differences mentioned above there for no bump steer increase. The 64.5 –66 have a different geometry and there for suffer from bump steer when 67-73 or Grenada spindles are used as replacements.
I apologies in advance for any mistakes in spelling and grammar but I think the facts are straight. Again there is a lot of good information in that thread.

Hey Jester, so if I use a '70 spindle on my '65 - I will need to use the larger spindle bearing, but it will accept my stock '65 tie rod end. Also, the location of the tie rod ends will be different, so I should use a bump steer kit. Do I have this right? This frickin' spindle stuff is driving me insane!

Tim

 

[Route666]

No I think the 70 has the same tie-rod hole as the 68-69.

One thing to remember is everything kept getting bigger. I think...

Yes this spindle/knuckle stuff is a little confusing.