streetported 4 port 13b

[risingyeast]

Rich? You know they're oil injected right? That smoke is from the unburnt oil, not fuel...

[rxtasy3]

@risingyeast i've been in rotaries since early 80s. nothing u can suggest that i don't already know. it's that rich.

[DStylesHanska]

Hey! I have a question about N/A rotary engines. Does the exhaust diameter matter? Your manifold piping was pretty big for a small naturally aspirated engine.

[rxtasy3]

@DStylesHanska not really. it's a RB system and i think they use 2" OD. i've read some have used 2.25" but i wouldn't go any larger than that.

[DStylesHanska]

@rxtasy3 I see... I`ve had to use straight side exit exhaust on my 1.6 8v engine for a while because of an small accident (the other guys fault), and I can clearly feel it`s lost quite alot power. Although having 55kw as standard it`s not a real goer, but there`s some power loss due to too freely flowing exhaust. :P 2" from manifold with cat only.

[nighawaaaxx]

thats not a rotary you can still talk over it lol

[diverseent]

street ports arent that bad thats why its just increasing your stock input and output making it more efficent without over doing it. so you cant tell its SP by its idle barley.

[rx7king03]

yea its true they use to have old carburated 13b back in the 70s 4 port 13b out of a rx4

[fc3sghost]

Hey is that a holly? if it is.. was it hard to put in? cuz i have a holly in my room and im thinking about droping it in my 12A street port. I also have a holly fuel pump in my 7. So tell me what you think. look at my video too.

[saturbo1107]

if you are thinking on using you stock intake manifold there is a way to doit, got to any auto part and get the aluminum spacer for a holly and get some one to weldit to the intake and you are done.. The right way to doit is by getting the racing beat intake manifold, thats a right fit...

[rx13be]

soundz like shit lool my stock 12a auto idles n revs better lmaooo

[CycloneRotor103]

No, the poster guy's right. I have an Rx-4 and yes, it is a 13B, and yes, it is 4-port, and of course, the fuel system is a 4 barrel carb much like the 12A 7's. Nice car, tho.

[rxtasy3]

i updated the description so there's no mistakes as to what i'm running. but as to the previous post, it doesn't HAVE to be a gslse to have a 13b in it. there's nothing to swapping out a 12a for a 13b.

[vspecluvah34]

chill out skippy i read wrong i thought u said 74 rx7 then yes u r right...i was saying that it wouldve had to be a gslse to be a 13b in a 1rst gen

[vspecluvah34]

gslse?

[rxtasy3]

no. do some research. in '74 the mazda rx4 was produced. it had a carbed 4 port 13b.

[vspecluvah34]

a carburated 13b? or was the intake plenum taken off...

[vspecluvah34]

uummm thats a 12A

[rxtasy3]

uummm no it's not. it's a 13b from a '74 rx4.

[veltpak6]

That sounds real nice!! Rotaries are quite awesome engines!