AARotary

What the hell is extent port never heard of that before. The engine produce 222KW=297rwhp and ran bext et of 10.72@125mph.

http://www.fullboost.com.au/cars/fea.../hirpm_p1.html

95MX6

I believe extended port = street port.

Greg

in aussie language

j9fd3s

iTrader: (3)

cool an r100! i like those cars.

mike

Greg

Oz has the nicest old school rotary import cars on the planet.

buzz

usually Aussie porting terms are progressive. Start with a stock port, enlarge moderately to a "mild port", get that bigger up towards maximum size and it becomes an "extend port".
Then we start bridge-ing, the variations are based on the size of the main port (stock, mild, extend) and the length of the new port in relation to the main port, and then the depth of the port; ie whether it goes into rotor housing and if so, how far.
Each engine builder has their own names for the combinations of length of the main port and the length of the extra port. An "extended bridge" is usually extended main port and a matching length additional bridge port.
A "drill port" is where the tight ar$ed loser who built then engine didn't have a die grinder or milling machine and used a hand drill to physically drill a line of holes where the bridge port would normally have gone. It is also a derogatory term...
Generally they are consistent with the name for the depth of the port, that is a j port is into the seals but not the water jacket, the monster port is through everything.
the coolest nick name I heard was for a engine bridged on the secondaries but not the primaries... the workshop jokingly called it a jetty-port, as it was only half a bridge
Some people have a "turbo" port - that is whatever in their own little minds think is the optimum sized porting for a turbo application - it is always a term that is exclusive to that engine builder.

That R100 is very nice indeed.

Node

iTrader: (1)

thanks buzz
What kinda engine is that?
Doesn't look like something I recognize, probably the intake mani and throttle body threw me off.

buzz

hmmm hard to pick engine model.
We get a lot of 2nd hand jap engines from all of the rotary powered vehicles, and people mix and match bits.

quote from article " the inlet manifold is an extensively modified Series 5 RX7 type". It is likely a mix and match of early and late 2nd gen turbo, inlet and engine components with a mid 1st gen dizzy.
FYI, in Oz early 2nd gen is referred to as series 4 and late 2nd gen is series 5. The s5 have better flowing inlets, IC and turbos and are hence more desirable than the cheaper s4. These may not neccesarily correlate with other overseas or domestic Jap models.

peejay

Right there, top left of page, "S4 13B Turbo"

So it's an '86-88 13BT. (That's what the plenum looks like without that ***-ugly intercooler sitting in the way)

Node

iTrader: (1)

We call early 2nd gens (86-88) Series 4's and late 2nd gens (89-91 because we didnt get 92's) Series 5's
Silly little U.S.

peejay

Isn't that what he said?

S1-3 are 1st-gens, 4&5 are 2nd-gens, and 6-8 are 3rd gens. The US only got Series 6's.

Node

iTrader: (1)

Yeah but just saying we have same way of saying it too. I think some places are either ahead or behind a gen.
So like 89-92 would be series 4 for them. I forget where.

Flobb

HOLY *****! This dude has my tennis shoes. And my freakin car is orange too!

buzz

peejay was on the money...
Node, what I meant was that what US call "2nd Gen" we Aussies call "Series 4" or "Series 5". We don't use the expressions about rx7 "generations" except when speaking to Americans.

It's a real change having to try and relate in American terms form some of us Australians... and hey, today, 26 January, is our National Day... ie "Australia Day" woo-hoo, time to drink beer....!

I tried dropping an email to the guy who owned the r100 to bring this thread to his attention. It really was a nice car, and was the fastest genuinely street registered rotary in his State (South Australia). Possibly still might be.... otherwise it would still be one of the fastest legal and untubbed from SA as they used to have quite strict road registration rules.

peejay

We use 'em too, but only when it matters. Like on, say, a '89 turbo, lots of the engine management is completely different from earlier models, so we talk about it as a series five. But if we were discussing suspension where it's pretty much all the same, then yeah we'll just say FC or 2nd-gen.

1st-gens are even more fun because with only two exceptions they made fairly large changes with every model year. so you have SAs (sorry, S1s) with points or electronic dizzys, S2s with different instrumentation or different oil coolers... S3s are all the same thankfully.

Node

iTrader: (1)

gotcha but yeah that cars nice. The older rotary cars have something about them, maybe it's because there are some that are extremely fast dragsters that you wouldn't expect from them, but most people do that to older light cars.

Felix Wankel

We got the Series thing from the Aussies.

HWO

actually thought it was everywhere outside the US

Judge Ito

Man Greg I have nothing but love for anybody that takes care of a precious old school mazda. especially that R100