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Mazda MX5 Power Steering Conversion


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#1 Sooley

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Posted 01 February 2007 - 04:47 PM

I have converted my car to Powersteer by using the early model MX5 P/Steer Rack and Nissan N13 Pulsar Tie Rod ends. You will need to cut and re thread the rack end and notch out a little bit of the cross member also for it to sit neatly. Overall this is a very easy mod and will I am sure make a big difference.
Another point is that it may help with the bump steer problem also as you will have longer rack arms and should be able to get more travel out of the tie rod ends.

Here is a pic

Sooley

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#2 tattoo_ink

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Posted 01 February 2007 - 05:25 PM

awsome thanks for that ! im on a mission now ! i didnt realy want to chop up the cross member to much so thats sounds like a plan ! thanks again ! chris.

#3 620Z

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Posted 02 February 2007 - 08:11 AM

Looks good. I to will have to get onto this sooner rather than later. My new 3.9 LSD should arrive today so I will get that one in first. I plan on strengthening the diff mounts at the same time to eliminate any vibration under strong acceleration.

#4 Sooley

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Posted 02 February 2007 - 02:53 PM

Might want to look at that custom alloy diff mount. they sell them on ebay, paid about $70 for mine I think.
Will cope with the power a lot more.

#5 620Z

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Posted 02 February 2007 - 03:01 PM

Thanks for the heads up Sooley. I will have a look or try and contact them direct. Do you know their trading name? I will try Custom Diff Mounts.

#6 Sooley

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Posted 02 February 2007 - 09:49 PM

http://cgi.ebay.com/...sspagenameZWDVW

This not the one I bought, but the same. Think its cheaper to.

Sooley

#7 620Z

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Posted 05 February 2007 - 07:38 AM

No worries Sooley. I have booked the car in to have the diff swapped over and the mounts re done before the Nation. Hopefully this will eliminate the last of the minor vibration under full acceleration.

#8 Sooley

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Posted 05 February 2007 - 07:48 AM

It will make a big difference.

Sooley

#9 apsilon

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Posted 05 February 2007 - 03:27 PM

I plan on doing the same conversion at some point. Can you confirm that the rack used is from an early NA MX-5 (the 1.6)?

#10 Sooley

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Posted 05 February 2007 - 06:57 PM

They are wll the same all the way from the 1.6 to 1.8 from what I am told. I used the 1.6 rack.

Sooley

#11 apsilon

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Posted 05 February 2007 - 07:24 PM

Thanks. I think the 1.8 NA had a slightly different ratio and the later 1.8 is a slightly different rack.

#12 sco_aus

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Posted 08 February 2007 - 02:37 PM

Ok, well I have done a bit of looking around. I have found a place called www.mx5mania.com.au . I emailed them and they can supply a power steering rack from a NA model 1.6L MX5 for $250. N13 Tie rod ends are about $15 each from repco. I would be using a RB25 power steering pump which I could probably get for about $150.

But there is something Im not sure about, how does the steering column go when connecting to the rack?

#13 Sooley

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Posted 08 February 2007 - 05:12 PM

Great work

The Steering arm is on a universal so it will work just fine.

You will have to notch out the cross member a little but it will fit great. Use Poly bushes and that will firm up the front end too. They also make a Poly steering arm bush that helps too.

Sooley

#14 apsilon

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Posted 08 February 2007 - 06:23 PM

Mania are great, I'd recommend them. Last time I looked though I thought they were $400 so $250 is a bargain.

#15 sco_aus

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Posted 08 February 2007 - 07:03 PM

Yeh I know, good stuff. But sooley, do you know how the steering column connects to the MX5 rack? Its the only thing I need to know.

#16 Sooley

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Posted 08 February 2007 - 09:51 PM

Mmmm, good question. I havent done that bit yet to know.
Keep me posted on what you find out

Sooley

#17 sco_aus

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Posted 15 February 2007 - 09:53 PM

I may have actually found some MX5 racks for $195 not including shipping (neither were the other ones) each today. I just have to confirm they are from the 1.6L NA model.

Im seriously considering doing this whilst i have the engine out of the bay. Just really need to know how the column attaches to the rack.

Is anyone else interested? Who knows, maybe we can get them cheaper as a group buy.

#18 nat0_240_chevZ

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Posted 16 February 2007 - 07:33 AM

i may be in for one.
however the subie rack could be an option from the pick apart or local wreck yards. also a very good swap.
keep me posted with the details, as il probly need PS since i broke my back and neck!! :x
was going to leave it manual steer, but i think the ps would be advisable.

nato

#19 620Z

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Posted 16 February 2007 - 07:39 AM

Yeah keep me posted as well I am definately up for one. Although I would maybe prefer the rack from the 1.8 Subaru! I presume it might be a little bigger , stronger etc presuming there is a difference.

#20 sco_aus

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Posted 16 February 2007 - 08:07 AM

Well actually from what I have heard these are really strong reliable racks. But also, it is so much easier to do the MX5 conversion, compared to the subi rack. But like I said I will let you know.




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