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mbisett
06-14-2023, 10:36 AM
I have recently completed my MK4 build. I installed power steering and find it is super sensitive. I understand that there is a method to trim a spring which will reduce the pressure of the pump. I am looking for some guidance on how this is done. Also what not to do, if that factors in.

Thanks!
rich grsc
06-14-2023, 11:45 AM
What are your alignment specs?
Ted G
06-14-2023, 12:32 PM
What Rich said. I also just completed my build (well almost) and my steering is very sensitive too. I have not got my alignment yet but know I have too much toe-in. I am sure my sensitivity is because of that.
Jeff Kleiner
06-14-2023, 01:13 PM
As said, get the alignment done and then see how it feels.

Power steering:
7-8 degrees positive caster
.5 degree negative camber
3/32" total toe in...make sure that it's toe IN, not out

Tire pressure 22-23 for 17 or 18 inch rims, 23-24 for 15s.

If you still feel that it's too sensitive afterwards we can help you with ways to reduce the assist depending on what pump you have.

Jeff
mbisett
06-14-2023, 05:11 PM
Alignment Specs are: Left Front -0.4 Camber, 6.6 caster, 0in Toe; Right Front -0.4 Camber, 7.2 Caster, 0in Toe. Front = 0in Total Toe and -0.02 Steer Ahead
Jeff Kleiner
06-14-2023, 07:05 PM
Zero toe or toe out will make them twitchy and lacking straight line stability.

What power steering pump are you using?

Jeff
mbisett
06-17-2023, 08:54 AM
I have a Saginaw PS Pump. I found that I had 28 lbs of air in the front tires, so I lowered it to 22. I am thinking about getting it realigned with the 3/32's toe-in before attempting to modify PS Pump. Your thoughts?
Jeff Kleiner
06-17-2023, 09:33 AM
I have a Saginaw PS Pump. I found that I had 28 lbs of air in the front tires, so I lowered it to 22. I am thinking about getting it realigned with the 3/32's toe-in before attempting to modify PS Pump. Your thoughts?

Yes. Even if the pump is modified a street car will track better with some toe in bs. Zero or toe out.

Jeff
mbisett
06-17-2023, 08:07 PM
Thanks Jeff. I will post the results after a realignment. Based on weather conditions in Texas (HOT) - it may be a few weeks before I get it in for a realignment.