1993 RX-7 Boost

Mazda Forum Mazda Classifieds Photo Gallery Member List Search Contact Us Sponsors
Models Mazda News Mazda Recalls TSBs Timeslips Register Login

1993 RX-7 Boost

Printable Version

Mazda Forum >> Mazda Vehicles >> Mazda RX-7 >> 1993 RX-7 Boost

Page: [1]

Message

<< Older Topic Newer Topic >>

1993 RX-7 Boost - 3/31/2008 1:02:15 PM

SiKTH21

Posts: 11
Joined: 3/29/2008
Status: offline

I was just wondering if anyone knew how much boost a stock 20B can handle.

Post #: 1

RE: 1993 RX-7 Boost - 4/3/2008 3:23:00 PM

wsoape281

Posts: 750
Joined: 3/1/2007
Status: offline

that depends on what you mean by handle. the motor will handle a decent amount of boost, but will be less reliable and streetable at a certain point. i know people that are running 15-20 psi on a 13b and they are fine. it will shorten the life of their engines though.

_____________________________

My name is Wes, and i am a boostaholic

(in reply to SiKTH21)

Post #: 2

RE: 1993 RX-7 Boost - 4/17/2008 11:06:11 AM

Damic

Posts: 12
Joined: 4/17/2008
From: Belgium (Schiplaken)
Status: offline

If the engine has other Apex seals (3mm instead of the 2mm) it will handle the 20psi like nothing.

(in reply to wsoape281)

Post #: 3

RE: 1993 RX-7 Boost - 5/9/2008 9:47:18 AM

gflenn

Posts: 3
Joined: 5/9/2008
Status: offline

Keep in mind that you need to add fuel as you increase boost. The stock ECU is only able to keep up with around 11lbs of boost. Stock pattern is 10-8-10. At very high levels you'll need bigger injectors and bigger fuel pump upgraded ignition and on and on and on...

I saw your other post and it looks like you have an upgraded intercooler so you might already have an aftermarket ECU. If you do make sure you get tuned for your boost level. If you start upping boost without you probably break apex seals and trash many expensive things. I don't think the stock twins will put out 20lbs. I'm thinking 15-17 if I remember right. They won't last as long at a high boost level either. Most people go single to get up that high.

(in reply to Damic)

Post #: 4