Peripheral Ported Mazda Housing

[salamanzer]

Hi, im posting this thread to ask if anyone on this forum has used the mazda supplied Peripheral Ported rotor housings ?

If not then i was thinking of making some of my own using the mazda housing as a template.

Anyone ?

Regards

J

[MikeLMR]

if you\'ve not seen this already take a look at this

http://www.rx7club.com/showthread.php?s=&threadid=144200

apparently the Mazda PPort housing are pretty conservative when it comes to porting.

Paul Yaw has some port timing figures on his website somewhere

ah here it is ...

http://www.yawpower.com/dectech.html

HTH,
        Mike

[Glenn Butcher]

These housings are quite good, but only for a Naturally Aspirated engine - not turbo.

If all the other bits and pieces are right in and around the engine it should be good for 300-320hp.

PP\'s are really quite awesome.

[salamanzer]

Ah so it looks like a DIY job - excellent i love a challenge !

Yes it is for a turbocharged motor -

i have to mate this to a HKS T51R SPL Ball Bearing turbo as well as a few other parts

Im looking to do this as a short e-shaft triple rotor engine i am also designing custom side plates because i will not need them if im running pp ports

[20B_boy]

This is near identical a project as chris who frequents this list on occassion. He is building a PP 3 rotor short crank from Bruce/Bell components I *think*, including I believe custom housings. I vaguely recall he may even be using a T51 (not HKS though). Actually no, I think it was some thing custom spec\'d??

I think he must be well into the project by now.

Chris, tell us all your secrets and give us an update if you\'re out there!!?!

Jason - start saving for that crank and all! Sounds like this project of yours has gotten a little out of hand bud!

[salamanzer]

Well the car is for \'drag\' racing and some circuit racing.

Im looking for 800BHP + hence the \'larger\' turbo.

I have just sold my evo 7 to fund this project and i have about 25K to spend on an engine, clutch and gearbox.

Im very good with tools and that porting job on the rx7club seems \'simple\' enough and will hopefully give me the power i require.

The car would be nice if it was streetable - maybe i can get away with stuffing some cats in there for the MOT then taking them back out again afterwards ?

J

[Glenn Butcher]

Jason,

Have a chat to Allistair of //www.evil7.com

If you have 800hp and intend to run it on slicks for the drags you will need a bigger/better differential etc.  a gearbox to handle that sort of power will also be big £££\'s.

800hp is really serious hp, it is a lever higher than many people have achieved (especially in the UK) - and it would only be with lots and lots of development/money (unless you go to someone who has done it already).

The engine block will be expensive, for example if you run Ianetti seals (which you really should) you will need brand new rotor housings - which also can\'t be ruined during the porting process.

Your inlet plenum will have to be custom with appropriate throttle bodies.

ECU will have to be decent also.

Not trying to put you off, but to do it right it will cost much more than £25K if you are including drivline/inlet/ECU/ etc. etc.

Other than that - sounds awsome

[salamanzer]

Ahhh - but what a project -  a sub 10 second car !

Class

Dont worry the 24K is just for the engine -

The other bits like dog leg boxes - triple plate clutches etc will be sorted at a later dat when the engine is finished

J

[DRAGON]

I have a triple plate clutch and some other bits and bobs that you may need.
I have also just been offered a 860 bhp 20B engine, form Japan.
Ross@dragonperformance.co.uk

[scooby_si]

BOOOOOGER may i pry as to how much such an engine wood set you back?
Si (greedy way too early )

[MikeLMR]

the usual price

[scooby_si]

[20B_boy]

Originally posted by DRAGON
I have also just been offered a 860 bhp 20B engine, form Japan.

What does that mean exactly?

Block? Long motor? Complete package with management? Whats it come with, and whats it going for? And what use has it seen...

[Grizzly]

Take it from me, buy one ready built, at least you know when you wind it up for the first time your not going to have 2 grands worth of Apex\'s flying out of your Exhaust.

I\'m not Paranoid!! Honist!!

When you look into the Periphral style of porting properly you\'ll find there aint many people that will recomend it, this is due to balance you must obtine between the Intake and exhaust pressures off boost, it will take alot of time to get it right if you want it Drivable.

At the end of the Day if you have any idea of driving it on the road (Like me) you need to do alot of home work and maybe even build a 13b P/P first before you take the Plunge.

Chris

P.S. Nice Turbo but a bit Small  

[Grizzly]

BTW, the Mazda P/P Housings are as radical as i\'ve seen and would not use them with a Turbo.

If you fancy a NA Triple then there\'s a set on the US E-Bay

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=46098&item=2451857481

Chris