Rotary Car Club

Rotary Car Club (https://rotarycarclub.com/index.php)
-   Rotary Tech - General Rotary Engine related tech section.. (https://rotarycarclub.com/forumdisplay.php?f=131)
-   -   Brazing rear iron dowel on S4 13BT?? (https://rotarycarclub.com/showthread.php?t=7883)

FC3S Murray 05-05-2009 11:10 AM

Brazing rear iron dowel on S4 13BT??
 
I have heard of earlier tuners doing it before the 13REW came out.

Anyone here done it OR seen it?

TehMonkay 05-05-2009 07:38 PM

No but i'm interested in hearing more

FerociousP 05-05-2009 07:52 PM

what would this do?

TehMonkay 05-05-2009 08:21 PM

prevent cracking the dowel landing.

drewski86 05-06-2009 09:07 AM

I'm sure you'd have better luck picking up a S5 or REW rear iron.

FC3S Murray 05-06-2009 11:07 AM

just ordered a brand new S4 rear iron that comes from Mazda with the updated FAT casting.

TehMonkay 05-06-2009 11:09 AM

Quote:

Originally Posted by FC3S Murray (Post 85665)
just ordered a brand new S4 rear iron that comes from Mazda with the updated FAT casting.

How do you know it does? I need more info.

FC3S Murray 05-06-2009 12:07 PM

Mazdatrix told me so. :) They stated every new S4 rear iron comes with the updated casting seen on 13REW's.

They also recommended I replace my rear rotor housing becasue they state every rear iron break they have seen causes the rear rotor housing dowel hole to "oval". I asked for some measurement tolerences from them since the FSM doesn't specify.

I am awaiting a response.

Since I have a hair line crack and I pushed 17 psi once on low compression rotors when my WG went tits up(15.4 psi is my normal boost), I am skeptical that my rotor housing is "stretched". I guess I will see once I pull it apart.

classicauto 05-06-2009 01:07 PM

Yep at this point, all of the OEM stock is the later casting/thicker casting babies.

Interesting point about the ovalling of the dowel land in the housing, never thought about that but it seems to make sense - check it for sure though :)

Oh and have fun with the OEM iron's ports :lol: They're usually rougher then jason statham's stuble.

FC3S Murray 05-06-2009 02:37 PM

Quote:

Oh and have fun with the OEM iron's ports :lol: They're usually rougher then jason statham's stuble.
Don't tell me that dude! I am already dreading attempting my first port job. I might practice on a scrap iron just to make sure I don't scar a 375.00 dollar part.

need RX7 05-06-2009 02:44 PM

Quote:

Originally Posted by FC3S Murray (Post 85717)
Don't tell me that dude! I am already dreading attempting my first port job. I might practice on a scrap iron just to make sure I don't scar a 375.00 dollar part.

Yes, it definitely takes practice. I tried it out on a junk iron before and made fatal mistakes multiple times. I do not recommend using a brand new iron for your first attempt at porting. :rofl: You could probably pick up a junk iron or 2 for fairly cheap to learn on.


All times are GMT -5. The time now is 02:01 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Hosted by www.GotPlacement.com