Hi,
I thought this would be easy in terms of just buying parts. I have enough work to do so I don't want to spend time fabricating parts. There must
part that fit?
I have an escort steering rack from Rally Designs, front wishbones from Fabmetal (Alan) and want to use the MX5 front upright. The problem I have is
matching the connecting components, track rods have a 14mm x2mm pitch and don't fit the MX5 track rod ends. The Cortina rod ends fit the thread
but the taper doesn't fit the Upright. If that makes sense?
I would attach a photo if I can to explain but seems not user friendly?? I've donated so I thought I would have more options.
MX5 TREs are M12 x 1.25 - are you using rack extensions at all? You should be able to get hold of them.
If it is only the taper angle that's the issue (I mean the Cortina rod end will fit safely otherwise), then why not just ream the upright to suit
the Cortina angle?
ETA: double check the car at full droop and full lock when it gets assembled, especially if you're using mark 1 uprights. Fouling of the steering
rack and the front of the lower wishbone is very common.
[Edited on 5/6/21 by PorkChop]
quote:
Originally posted by PorkChop
MX5 TREs are M12 x 1.25 - are you using rack extensions at all?
I think that they use BMW rod ends in the Voodoo plans.
Most, if not all, Sevenesque cars using MX5 uprights I've come across use the E28 BMW 7 series track road end (M14 x 1.5, which is very different
to what you'd find on Ford based suspension). Its taper is the correct angle and fits fine in mark 1 uprights. However, in my experience, as the
mark 2/2.5 MX5 upright has a much thicker upper taper fitting, the BMW TREs that I had didn't have enough thread to fit the nyloc on properly. I
was heading down the custom route to get something that fitted as I couldn't find an off the shelf part (and my wishbones had been made to accept
the BMW TRE).
Unless there's a good reason not to that I'm not aware of, I can't see any reason why you just wouldn't ream the taper in the
upright to suit the Cortina part to fit the upper wishbone to the upright. Then fit steering rack extenders to take the M14 x 2 ends down to M12 x
1.25 to then fit the MX5 TRE into the steering arm on the upright.
quote:
Originally posted by AJC
I think that they use BMW rod ends in the Voodoo plans.
I went to the lathe man to have some TRE's made up. They were a Mazda TRE to an escort rod, and were made to the length I needed. He didn't
charge me any more for the exact design I wanted.
Here's an example on his Ebay store;
https://www.ebay.co.uk/itm/182037303712
https://www.ebay.co.uk/itm/181082511479
The lower ball joint on the uprights is the standard Mazda with the one threaded bolt going vertically and the nut and bolt going horizontally. The
top ball joint on the uprights is the BMW one mentioned previously. But that is following the Saturn plans.
[Edited on 6/6/21 by Slimy38]
You're looking in the wrong place...
http://www.kitcardirect.co.uk/mk-indy-rx-5-steering-rack-extensions
-pair.html
http://www.kitcardirect.co.uk/mk-indy-rx-5-track-rod-end.html
quote:
Originally posted by Slimy38
I went to the lathe man to have some TRE's made up. They were a Mazda TRE to an escort rod, and were made to the length I needed. He didn't charge me any more for the exact design I wanted.
Here's an example on his Ebay store;
https://www.ebay.co.uk/itm/182037303712
https://www.ebay.co.uk/itm/181082511479
The lower ball joint on the uprights is the standard Mazda with the one threaded bolt going vertically and the nut and bolt going horizontally. The top ball joint on the uprights is the BMW one mentioned previously. But that is following the Saturn plans.
[Edited on 6/6/21 by Slimy38]