13b mX5 CONVERSION!!

doc_re · Postby **doc_re** » Fri Jan 03, 2014 4:53 pm

Hey peeps,

I'm planning to puta 13B into my mx5 and wanted to know if anyone on here has already done it ??

If they have some tips on what to do/what needs to be changed etc

any help woul be much appreciated

cheers
Cliff

plohl · Postby **plohl** » Fri Jan 03, 2014 6:03 pm

Check out the lucky7racing sub frame and sump kit. http://lucky7racing.net/collections/fea ... -mount-kit

Note - there is a difference in the steering rack mounts for lhd and rhd front sub frames. So you would have to address that. The rack position is the same, just the lateral location of the mounts is different.

You'll need to adapt a FC rx7 bell housing or something along those lines...

ja9 · Postby **ja9** » Fri Jan 03, 2014 9:46 pm

Andy from Adaptronic has done it. Do a google search and you should be able to find it.

sailaholic · Postby **sailaholic** » Fri Jan 03, 2014 10:54 pm

Here is a detailed break down from someone who did it.

http://www.boostcruising.com.au/forums/index.php?showtopic=300911

Link isn't displaying on the phone when in URL phone so here is text as well

http://www.boostcruising.com.au/forums/ ... pic=300911

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doc_re · Postby **doc_re** » Sat Jan 04, 2014 7:25 am

Thats awsome thanks guys, Im just finishing of my FD first then I'll get started on the mx5 I'll start a thread so that everyone can see what Ive done !!

Cheers
Cliff

doc_re · Postby **doc_re** » Sat Jan 04, 2014 7:33 am

Found this aswell viewtopic.php?f=18&t=39084&start=60

Renisis conversion in a NB and they have retained the power plant frame, Im not sure if I want to do this as Im thinking I'll need to upgrade the diff???

How much power can the NA diff handle ??
I'd put a mechanical 2-way in also which would make it a bit stronger!!

doc_re · Postby **doc_re** » Sat Jan 04, 2014 7:37 am

Found this one also http://forum.miata.net/vb/showthread.php?t=360583

using a series 4/5 FC rx7 motor

doc_re · Postby **doc_re** » Sat Jan 04, 2014 7:44 am

found this also http://mazdaroadster.net/showthread.php ... Swap/page2

93_Clubman · Postby **93_Clubman** » Sat Jan 04, 2014 10:14 am

doc_re wrote:I'm planning to puta 13B into my mx5 and wanted to know if anyone on here has already done it??

Believe Duj in Adelaide did:
viewtopic.php?f=44&t=16570
viewtopic.php?f=44&t=18000
viewtopic.php?f=44&t=16605&start=30
search.php?st=0&sk=t&sd=d&sr=posts&author_id=1524

sailaholic · Postby **sailaholic** » Sat Jan 04, 2014 10:29 am

I assume this is going to be non turbo? If so you should really have too many issues with the diff.

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plohl · Postby **plohl** » Sat Jan 04, 2014 11:03 am

Unless it's an na6 diff...

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doc_re · Postby **doc_re** » Sat Jan 04, 2014 11:10 am

sailaholic wrote:I assume this is going to be non turbo? If so you should really have too many issues with the diff.

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Yeah going 13B PP with fuel injection or webber so about 200kw at the wheels

So diff should handle it ???

sailaholic · Postby **sailaholic** » Sat Jan 04, 2014 11:20 am

That link I posted the guy talks about when stuff needs upgrading. The 7" diff is basically the same internals as a Rx 7 diff. Gearboxes are the weak point. I think the turbo boys accept about 300 hp a being about the limit on a 6 speed, 5s are weaker.

You will save a lot of effort if you retain the stock box and diff combo.

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oztrackdays · Postby **oztrackdays** » Sat Jan 04, 2014 11:44 am

Go to you bank empty it out in $20 dollar notes, stack them up and then set fire to them.

If you get any change from $15 - $20k you will be cutting corners, an actual healthy 13B-REW
will easily punch out 220+ rwkw but the heat will decimate your NA, the handling will be worse.

Watch how drivable Andy's actually is, it was done before as the first bullet and they
stopped making them because they handled so badly.

[youtube]https://www.youtube.com/watch?v=Hpx51VW3gmg[/youtube]

If you want turbz, then just turbo the 5.

THIS IS AN IDIOTIC SWAP

I am all for crazy swaps, in the middle of two of them myself but don't do an idiotic swap,
have you seen the prices on Late 90's FD RX7's you can just buy one of those for less.

doc_re · Postby **doc_re** » Sat Jan 04, 2014 12:40 pm

sailaholic wrote:That link I posted the guy talks about when stuff needs upgrading. The 7" diff is basically the same internals as a Rx 7 diff. Gearboxes are the weak point. I think the turbo boys accept about 300 hp a being about the limit on a 6 speed, 5s are weaker.

You will save a lot of effort if you retain the stock box and diff combo.

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Yeah I did read that i one of the post's thanks again!