Hi.
My car is civic 92 EG6 with b16a2 engine, power steering with 3,2 LTL, full set of energy suspension bushings. After installation of obx lsd the car became very nervous at high speed - over 70mph. It is stable but steers very fast with small steering wheel change. At slower speed everything is OK but at higher speeds the things goes worse. I went to wheel alignment but everything was ok.
Is that normal? Is there a way to fix this? Help?

The second ptroblem after installing the LSD that car has a little torque steer. I feel it on high speed. Is the torque steer normal? It is very sensitive to tyre pressure, too. The difference more then 0,3bar in the front tyres make the driving at high speed impossible.

The alignment sheet:
http://i50.photobucket.com/albums/f3...f/DSC05684.jpg

 

It's hard for me to read the figures in the image you linked, but I wouldn't give up on the alignment just yet.

Try to find somebody with a good, modern laser setup and make sure it's a full four wheel, race oriented alignment to include the total overall thrust.

It's possible to come away from an alignment with specifications that might look okay on the printout of an older setup, but the car's total overall thrust is still off a little...and this "little" will make the car twitchier and twitchier as the speeds build.

 

The alignment tool is laser...
HEEELP!

 

If your steering is twitchy it has to be some kind of steering system and/or alignment issue. The LSD can't have an effect on the steering rack ratio. 3.2 turns lock-to-lock, is that an OEM rack, or a Quaife or something? Did you have that rack before putting the LSD in?

The torque steer is probably the LSD. Though that tire pressure thing you're complaining of also doesn't make sense, unless your pressures were close to being way out of whack to begin with. What tires, and what pressures are they set at?

 

The steering is very jerky, abrupt with very small wheel change but this is only at high speed. 3,2 LTL power steering rack is OEM rack for EDM EG6. I did't change the rack.
I tried with 195/55/15 - 2,5bars on the front and 2,2bars on the rear, after that i install wilood BBK and the tyres are 205/40/17 Pirelli PZero nero - 2,8bars on the front and 2,3 on the rear. May be the problem is a little bigger with 17" tyres.

 

If we're talking high speeds, am I assuming correctly it's on the highway? That could be the tires following the grooves in the road. Some are worse than others, and that can feel "jerky".

 

The car isn't street it is weekend race car. I don't know how to describe the problem but at low speed it steers like steering rack - 3,2 LTL, but on the high speeds the car handle like the steering rack is 2 LTL. The high speed driving is awful.

 

I'd say it's the energy suspension bushings...

I have driven a car with them and it feels like what you are describing.

 

I've seen a problem similar to what your having. It turns out the guy was running mismatch tires right to left.

 

I had a very similar problem, I had an alxe go bad (the boot was ok but internals had quite a bit of play) and during heavy acceleration would act very very almost uncontrollable twitchy (using a cusco lsd). new axle and was good to go check your axles and see if one has a lot of play in the joints.

 

Axles was changed. No change.