Quote:

Renesis rotors!! What needs to be done to fit these in a 13B?
Hmmm....a single rotor 13B PP with renesis rotors in my 1000 ute. It's sounding very tempting!
And by the way, I bought second-hand S5 rotors for about 400 bucks so that would make the renesis ones free??

Quote:

I've always seen dowelling as way of keeping the engine together under high boost, so I wouldn't use it in a PP anyway. The big sump gasket "brace" seems like a good idea though.

to fit the renesis rotors you need to change the apex seals to the oldskool type with corner seals. just a bit of machining there.

dowelling is actually detrimental to a boosted rotor. there was a massive comparison on Ausrotary a few years ago and evryone who has had it done swears they will never do it again - a few people had them crack in exactly the same spot they did BEFORE they dowelled them.

it removes the original cast metal and basically you are "building in" a crack by sleeving it. poor engineering practise - like welding thick plate and not tapering the flange to be welded. you are "building in" a crack in between the two welds. same principle.

you should use the thick sump gasket for any performing motor that undergoes hard launches - boosted or not. load is load and a walking rear rotor housing = death regardless of whether there is a turbo off the side or not.

Hmm, thats interesting about the dowelling. I ran a dowelled 13B for a couple of years as a daily driver with no problems at all, running around 350 rwhp with a bit more when I raced it. Same with a mate, who got it done around the same time. In fact I think his engine is still getting around somewhere and this is like 4-5 years later.
And my bro's currently running one thats around 430 rwhp, but it hasn't done many kays yet. I hope it doesn't run into any cracking problems.

if they're not clutchdumping or transbraking at 6000rpm then dowelling is fine - like i said it's only under big load (like hard launches) that makes the rear rotor housing walk.

but we're WAY off topic so i'll leave it there.

hey i had to dig this thread up again.. pretty pointless of starting a new one... just wondering if anyone can quote a price on a 12A/13B rotary conversion for the 1000 coupe? Including engine and labour? I'm in a steady job now and im saving up to do sh!t with my car

cheers
shaun

Go here mate and contact them http://www.mazfix.com.au/

Probaly best mazda related place in OZ.

There in Underwood in Brisse

Oh cheers! ill check them out and Dyson rotary at the coast.. see wat they can tell me... thanks again

ok sorry to revive this thread but i wondering would there be any problems registering a 12a in a datto 1000 in nsw??
and do you times the whole displacement by 2 or just the displacement by one rotor? because if you times the whole displacement of both rotors by 2 would give a figure up around 2.3?? but times one rotor by 2 and it give around 1.2
also D the link to aerota is not working any other way to find the single rotor motors?

Try
http://www.airota.com/

It was the obvious 2nd choice, still the site isn't that great but it does list contact numbers etc.

thanks for that anyone want to clear up registration issues is it possible to do in nsw or does the guidlines not allow it?