I m not sure but if i remember correctly there was a guy ( cant remember his site yet or find it) but he did a conversion from a 13 b and just put a costum shaft and added an extra housing etc is this really possiable guys or not just curious.

 

Yes it is possible.

http://www.hitman.hm/rx7.htm

 

thanks do you know how much it was to build thiswell the motor stuff any way

 

approx $900US of for the shaft and $300US for the mods to the centre plate to hold a stationary gear. approx $100US for the right length bolts

 

There is problems with doing the Triple mod without PP'ing it.

Its due to the Extra plate that is needed has to have a Primary port on one side and a Secondry the other, sounds easy does'nt it but it aint. then you need to fit a Stationry gear.

It can be done but the Port sizes will be nearly stock port.

I have looked into this in great detail and found it would be easyer to get a 20b and fit a single peice E-Shaft.

I dont want to sound funny but do a search as i put alot of information up not to long ago.

 

This is the Extra Center plate

 

The thread i put up is called 20b? just do a search.

 

hey grizzly can i just buy the center plate done already and where can i buy the 3 rotor top piece (intake) at.?

 

so what is the difference in price alltogether i would think from the sound of it that the trip mod would be cheaper and its lighter right? i appreciate this stuff cuz im getting ready to rebuild a 13b turbo motor and that well hell why not look into the tri mod...

 

After buying the shaft and modifying the center plate and buying the other stuff (rotors, housings, intake plenium, injectors, etc) I think it would be near, or more, than buying a complete used 20B if you shop around. Complete 20B's go for $2500-$4000 about, plus then if something breaks, you can easily get a factory part to replace it with.

 

oh ok good point but ive never been able to find one that was for 2500 or even in the middle of thosee figure
**** for 2500 to 3000 i would and just do everything myself, thanks bridgeported i appreciate the post i will seearch more for motor prices

 

I know Nippon Direct had them for sale about 5 months back for $2200 US but right now they have them for sale for $3600 US.
www.nippon-motors.com

 

My advice is unless you want a Fire breathing 700bhp PP ported triple which has cost you alot of money buy a 20B.

With a 20B you dont have to mod/Make a Center Plate,E Shaft,Sump,Lower Intake,Exhaust manifold etc and also the Triple was designed to run PP.

But there are advantages in doing the Triple mod as its lighter,can run more power,bits are easyer to buy in the Future etc

 

i see well i email nippon-motors and they said i could get the 3 rotor for well about 3000 so i think thats the best price ive ever seen on one so we shall see.. thanks guys good louck on all your projects

 

One more thing can you run 600 hp without porting the engine or can you leave it stock

 

If you use a T2 centre plate you can have the same opening and closing timing on the secondary port as you would on the normal secondary port, the runner will be smaller yes.

One of the beauties of this set up is you can have a 3 piece e-shaft and have a bearing in each plate, that way you can happily pull 10K so you can hear that oh so sweet sound of a tripple rotor on full song.

in a couple of years time i suspect i will end up doing a custom 3 rotor running big primary ports and secondary PP's as it will still be street legal and see SOME road time.

If building something like that you'd need a custom manifold etc anyway. All i can say is guys in other countries cantbe very inventive or cant have access to guys with the right knowledge, experience and machinary to be able to do custom manifolds etc, Just how do us guys down under manage.........

 

How do you make a port the same size as a Secondry in a T2 Center plate? Thats what i was trying to say.

You cant just do it as easy as that, there is not as much material around the Primary port on a T2 center plate to make it anywhere near as big as a stock T2 secondry. The only way you can make the ports flow anything like the same is to get it on a flow bench and balance the ports that way but its not somthing thats very easy.

The Triple mod has to be well thought about before you do it,

U want to Talk to some one that has, Mat at Hitman has done the Mod to his Gen 1 and evern he recomends doing it the 20b way out of pure ease.

 

I KNOW THE GUY WHO BUILDS THE FREAKING PARTS!!!!!!!!!!!!

i have known him for nearly 4 years, he's a great guy
He has just finished doing a PP quad rotor for a guy - it sounds awesome i have heard it idleing

I feel you are confusing PORTS with PORT RUNNERS

 

I had a great idea well its probably been thought of but any way
Can anyone or has someone mad the rotors out of aluminum like they do for pistons just wondering if someone has and how much it will cost?

 

Aluminum rotors might be good for an NA rotary, but I would never do it on a turbocharged one. I would bet they wouldn't handle much boost (stock boost maybe).

 

Ok HWO so you know the guy who builds them!

Go and ask him! its ALOT easier to build a PP Triple than a stock port Triple from 13b bits.

So work it out! if you want a 700bhp PP triple you spend your money on a custom 13b, if you want a 500bhp road engine you street port a 20b.

As for street porting a Triple its a NOT starter. I know alot about porting now as i have a 13b that has the largest ports you can possably make from a T2 engine (i scraped 4 plates making the templates) I ended up making a 13b from a damaged 20b for the sheer size of the stock ports.

yeh i kind of know the diffrence between Port runners and Ports?

P.s. the pic enclosed is the Runners of a street ported 20b.

 

now you tell me how you make the primary on the center plate of this street ported 13b the same size as the secondry? this is why i say its not easy making a stock port Triple.

 

If you have doubts about doing a 20b mod watch this Vid, Its a Toyota with a moded 600bhp 20b fitted.

http://www.aoqz41.dsl.pipex.com/Beast.mpeg

Enjoy.

Chris

 

Oh man! I've never ever seen that video before!
Nah, just bugging, it really good enough I don't care how many times I see it posted!

 

Yeh its my fav, You have got to love the 20b.

Chris