TA22 + rack and pinion

[takai]

Chuck - the guy on this site has done the conversion to a KE25 suing the KP starlet rack IIRC, it is worth reading through as he goes one way and changes plan of attack.
Teh whole point of the exercise is that if it is going to fly on a KE25, the at least some of it will be relevant to the TA22.

http://1uzfe.com

Good luck.

I think that a KE25 is narrower than a TA22 though, a KE30 is certainly narrower than the 22, as i park behind Ahrensys every day.

[Cool1]

I think that a KE25 is narrower than a TA22 though, a KE30 is certainly narrower than the 22, as i park behind Ahrensys every day.

Thats ok cause it looks like the KP rack is a tad to wide for the KE.

[YelloRolla]

When I was looking into them seemed best to get some send over from NZ.

Yes indeed - WDE_BDY has suggested that they're available over there earlier in this thread.

[WDE_BDY]

I intend to pull one (maybe two) KP6# racks from a wreck dumped outside the wreckers near me this weekend. If its still there I will take it, measure it and photograph it this weekend to see if its a suitable option. Unfortunately my Starlet currently has the complete crossmember, rack and front suspension from a TA63 Carina so doesn't really help anyone.

Callum

["Z" UTE]

Chuck - the guy on this site has done the conversion to a KE25 suing the KP starlet rack IIRC, it is worth reading through as he goes one way and changes plan of attack.
Teh whole point of the exercise is that if it is going to fly on a KE25, the at least some of it will be relevant to the TA22.

http://1uzfe.com

Good luck.

Thank you for the link YelloRolla. I had a good read about the flea some time ago. He has made progress !!!!

Guess I will be crawling around under cars again tomorrow. This time to locate/triangulate/vector, and just generally get stuff in the correct position.

Thank you to all, that have contributed so much to this thread. 'Tis nothing short of amazing what has been done, and is being done in the world of TOYMODS.

cheers Chuck.

[takai]

Ill be doing a dry assembly of my system before i put it in, so measurements galore for me

[o_man_ra23]

That is one hell of a mouth full, but after reading it several times, I think I have it nutted.

So here goes my version:
Rack rod length =control arm length.
Control arm parrallel to rack rod.

Second bit:
If centre lines are drawn through all the joints, and connected to the neighbouring joints, visually you should have a parrallelogram. I tested this by grabbing 2 long welding rods, and 2 shorter rods.

Owen, have I got that correct? If not, I will edit it out.

Steering is very dynamic, with the angles between all points subject to change with road surface variations, so it is quite critical that the geometry is set correctly. By mounting a steering rack too far rearward, an increase in Ackerman angle will occur, this will change the cornering characteristics quite markedly. ie massive inside tyre scrub, and a tendancy for the vehicle to almost trip over on the inside wheel.

cheers Chuck.

Dont forget that the control arm ball joint is infact lower than the tie rod end ball joint. Its all about relativity.

Cheers, Owen

["Z" UTE]

Dont forget that the control arm ball joint is infact lower than the tie rod end ball joint. Its all about relativity.

Cheers, Owen

Good stuff Owen, RCA adjusters could come in handy If I get it wrong.

A few more measurements this arvo, the rack ball ends, are each about 5mm outboard of the centeline of the LCA bushes. The link to the "FLEA", shows how the rack, and the ball ends can be shortened. Me thinks this is the way I will proceed. Crossmember out of the car tomorrow, and start fabricating the mounts. Mine will have to sit a little lower than anyone with a "T" series engine. But I will take a few pics, as the job progresses.

cheers Chuck.

Just in, AW11 rack end to end is 60mm wider than TA22 linkages, all laid out on the ground.

[WDE_BDY]

OK, KP rack time. End to end the rack is about 590mm. Was a bit tricky measuring to the centre of the rack ends so have just measured to the ends. From steering arm to rack end is around 300mm and the KP LCA mounts are 600mm apart.

If you need anymore measurements or pics just let me know, will grab them in the morning as its beer time now.

Callum

PS – this rack is stuffed, got water in and seized solid. I can also confirm the spline for the steering column is shared with the xA6x Celica’s and Carina’s, the Starlet universal bolted straight to my Carina rack.

[o_man_ra23]

Good stuff Owen, RCA adjusters could come in handy If I get it wrong.

RCAs wont help you. All they are for is to reset your suspension back to the factory bumpsteer setting after lowering. They will not help you if you design bumpsteer into your setup, they may even make it worse.

Callum,
The important measurement is between the centres of the two balljoints on the rack end. These will require you to remove the rack boots. The other lenghths can be modified by choosing appropriate tie rod ends, rack ends, and by changing the adjustment between those two.

Cheers, Owen

[merc-blue]

Just subscribing, so i dont have to keep searching for this thread,
Im very interested to see where this goes

[Screamn_Sleeka]

Dont know if it helps, but holden gemini's are a good source of short rack's.

[brett_celicacoupe]

i think it would be worth looking at a AE71 as a source of the xmember and rack.

they ~look~ like an awfully close match.

[takai]

i think it would be worth looking at a AE71 as a source of the xmember and rack.

they ~look~ like an awfully close match.

We have already established that they are too wide for a TA22.

[TurboRA28]

AE71/KE70/AE86 all same width..

AE82 is narrower for sure.