rx engine into mx5?

Started by Tomcat, November 11, 2008, 04:57:44 PM

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Tomcat

now thats just unpractical lol.
 
think ill have to contact a few companys and see if anyone would take the job on.
 
dont think ill be able to afford it untill mid next year but i def want to get a decent engine in there :d
 
aj

tinker-27

give us a call we can do it 07950399080 craig,

Tomcat

hey mate thanks for the post sorry i have only just seen it, i have found someone to do the work now.
 
thanks once again though.
 
aj.

clive

First the rumor,

When the first gen MX-5 came out apparently Mazda believed it would not be possible to physically fit a Rotary into an MX-5, apparently 2 months on the Australians did it !,

Secondly the fact,

I was told by word of mouth from Mazda that but for the swipe of a pen the latest generation MX-5 very nearly went into production with a Rotary, it was only in the last stages of evaluation that a boinger was chosen again.

One of the MX-5 club committee drove one of these fully functional  MX-5/ RX-8 engined  "hybrids" out in Germany and told me that it was a hugely impressive machine :Santa


Probably loads out there if you do a search but here\'s one for you,

http://www.boostcruising.com/forums/index.php?showtopic=223477
All the best Clive

Tomcat

thanks for your info mate and cheers for the link :D
 
aj

Carl

I reckon the best conversion you could do is an RX8 engine.
The RX8 engine has two major advantages,one is the sump is very shallow so the engine can sit low enough,and the other is the exhaust manifold area in the engine bay is very tight on the MX5 but the RX8 exhaust manifold can be very compact so would fit well.
Also the engine could be put onto a Weber IDA carb,which would sound great and produce at least 200 free revving N/A HP with a 9000rpm red line.
Sounds like a great combo to me.
An RX8 gearbox would also work very well and can be adapted into the MX5 power plant frame.
This is one project that we will be doing sometime in the near future for ourselves.
I am on the lookout for a cheap second gen MX5 if anyone has one!
Regards
Carl

RobbieRX-7

Mmm, 200 bhp isnt enough for me!. May as well tune the standard engine to reach that. I would want about 300bhp from a rotary in an mx5

Tomcat

cheers for the info carl, im with robbie on this one also though, im going for 350bhp so the rx7 engine should get me there nicely :D
 
theres a few cheap mx5\'s on here:
 
http://www.mx5nutz.com/forum/
 
good luck.
 
aj

HaywardRotary

200hp from an RX8 engine would be way quicker than tuning the original piston lump.
But turbo charged FD/FC lump is not a straight forward job, room is tight and also height of engine centerline is another area to be careful of.
Look forward to seeing what you do.
If you need any help,give me a buzz.
Regards
Carl
We warranty our rebuilt engines for Detonation, track day\'s and RWYB and NOW for 30 months which is two and half years or 30,000 miles
We also build all types of race or road engines.
We build race and track cars too.
Any kind of porting undertaken.
Single turbo conversions.
S

california styl

Pettit Racing had one in their old showroom in Florida, with a flared arch kit.

It looked amazing and Cam said it went like a bat out of hell....

He also said it was no piece of cake getting everything in though!

Some Pics and Info

I think what Carl said is right about an RX8 engine, and also I think its a shame that for the 40th anniversary rotary, they didn\'t make a lame RX8, they should have made a rotary MX5. It would have sold out in 1 second.

Tomcat

thanks carl i will do that :)
and thanks again for the info.
 
 
thanks california styl i will read up on that now, car looks nice :D
never know it might help with my install.
willl certainly help me know what parts i need to get together for the install.
 
i have found an engine and im just in talks with the guys as we speak about it so fingers crossed will have that by mid jan.
so the install should start early feb :D
 
will keep you all posted.
 
thanks aj.

Red and Single

Quote from: Carl;559344I am on the lookout for a cheap second gen MX5 if anyone has one!
Regards
Carl

HI Carl,

I have one of those and you can practice on mine if you like !!
Dave Hughes
13.352 @ 109.03mph (running 0.75 bar  :rollin )
Red \'95 Type R T04S & Bare Arsed  :chat

rx jamie

Quote from: antnicuk;554012i like that idea,  how about using a westfield chasis with a more aerodynamic body :)


ive seen a 550hp cosworth engine in a westfield before. it span all the way through the gears to an 11.1 quarter. still spinning over the line. too much power i think

Ricco_04

Quote from: rx jamie;560444ive seen a 550hp cosworth engine in a westfield before. it span all the way through the gears to an 11.1 quarter. still spinning over the line. too much power i think

I got a westie with a blade engine in - 0-60 in 4 seconds and its only 130bhp :Giggle.  200bhp in a Westie would be ace.

There are loads of room in the arches for really wide wheels with sticky rubber :Giggle

Tomcat

nice mate i bet thats fun :D