3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

Vaccum hose SIMPLIFICATION

Thread Tools
 
Search this Thread
 
Old Nov 3, 2002 | 01:17 AM
  #26  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
Originally posted by JONSKI
I forget to mention something VERY important.

If you scroll down the page there is a "notes" section. The 1st note is very important! IF YOU DO NOT HAVE AN AFTERMARKET FUEL SYSTEM, LEAVE THE FUEL PRESSURE REGULATOR SYSTEM INTACT.
What classifys as an aftermarkey fuel system?
Reply
Old Nov 3, 2002 | 01:23 AM
  #27  
JONSKI's Avatar
5yr member, joined 2001
Tenured Member 15 Years
 
Joined: Dec 2001
Posts: 908
Likes: 1
From: Marco Island, FL
Originally posted by Zoomspeed
What classifys as an aftermarkey fuel system?
Here is the exact quote from Rob's site:
1. In the diagram, I show nothing for the fuel pressure regulator. I did some fuel system work at the same time as the vacuum system which included an aftermarket fuel pressure regulator that I attached to the nipple on the bottom of the lower intake manifold (same source location as stock but with only one hose.) You MUST leave the stock system intact OR add an aftermarket pressure regulator of some kind. For those not modifying their fuel system at this time, be SURE to have the FPR solenoid and lines attached well and correctly (failure of any of these parts could easily cause engine failure).

The page can be found here:
http://www.rx7turboturbo.com/robrobi...lification.htm
Reply
Old Nov 3, 2002 | 01:29 AM
  #28  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
Originally posted by JONSKI
Here is the exact quote from Rob's site:
1. In the diagram, I show nothing for the fuel pressure regulator. I did some fuel system work at the same time as the vacuum system which included an aftermarket fuel pressure regulator that I attached to the nipple on the bottom of the lower intake manifold (same source location as stock but with only one hose.) You MUST leave the stock system intact OR add an aftermarket pressure regulator of some kind. For those not modifying their fuel system at this time, be SURE to have the FPR solenoid and lines attached well and correctly (failure of any of these parts could easily cause engine failure).

The page can be found here:
http://www.rx7turboturbo.com/robrobi...lification.htm
Thanks =)
Reply
Old Nov 3, 2002 | 02:16 AM
  #29  
Senior Member
Tenured Member 10 Years
 
Joined: May 2002
Posts: 614
Likes: 0
From: Washington
jonski,
seems like you didnt put any resistors or solenoids for resistance. arent you getting a limp mode response?

Nathan
Reply
Old Nov 3, 2002 | 02:21 AM
  #30  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
So how hard is this? I'm so affraid to jump into the vac lines.
Reply
Old Nov 3, 2002 | 11:02 AM
  #31  
apneablue's Avatar
Eats, Sleeps, Dreams Rotary
Tenured Member 20 Years
 
Joined: Feb 2002
Posts: 3,045
Likes: 2
From: North Coast
be afraid, be very afraid

I jumped into it without any thought and it's a bit more work thank I would have like to do...But what the hey, it's just as good a time as any...I am sure my car will be off the road for another 2-3weeks..

No emissions here in Oklahoma Rodski
Reply
Old Nov 3, 2002 | 12:03 PM
  #32  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
Originally posted by apneablue
I am sure my car will be off the road for another 2-3weeks
2-3 weeks? Surely that isnt' the downtime for this hose job right?

No emmissions in KS either
Reply
Old Nov 3, 2002 | 12:33 PM
  #33  
BicuspiD's Avatar
Infamous...Butcher...
Tenured Member 10 Years
 
Joined: Feb 2002
Posts: 510
Likes: 0
From: WA
Originally posted by apneablue


No emissions here in Oklahoma Rodski
Dayum - You need a roommate, on paper?
Reply
Old Nov 3, 2002 | 12:41 PM
  #34  
apneablue's Avatar
Eats, Sleeps, Dreams Rotary
Tenured Member 20 Years
 
Joined: Feb 2002
Posts: 3,045
Likes: 2
From: North Coast
Originally posted by Zoomspeed
2-3 weeks? Surely that isnt' the downtime for this hose job right?

No emmissions in KS either
No, this just happens to be the time I am able to work on it...about an hour or two a day then to track down the solenoids I broke / am going to break
Reply
Old Nov 3, 2002 | 01:32 PM
  #35  
JONSKI's Avatar
5yr member, joined 2001
Tenured Member 15 Years
 
Joined: Dec 2001
Posts: 908
Likes: 1
From: Marco Island, FL
Originally posted by Ohseyun
jonski,
seems like you didnt put any resistors or solenoids for resistance. arent you getting a limp mode response?

Nathan
I didn't use any resistors, but I put all the solenoids back on their plugs, the unused solenoids don't have any vacuum hoses on them. With this setup, I don't even get a check engine light.
Reply
Old Nov 3, 2002 | 01:39 PM
  #36  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
So how long should I expect to take doing this? I'm slooooow.
Reply
Old Nov 6, 2002 | 11:58 PM
  #37  
ROTORHP's Avatar
i love boost
Tenured Member 05 Years
 
Joined: Sep 2002
Posts: 803
Likes: 0
From: St. Albert Alberta
What kind of power gains can a guy expect from the simplification? I going to do mine this weekend and caught this thread... lucky me. I was going to do the regular replacment but I like the sounds of htis setup.
Reply
Old Nov 7, 2002 | 12:39 AM
  #38  
racerfoo's Avatar
Senior Member
Tenured Member 10 Years
 
Joined: Jul 2001
Posts: 615
Likes: 1
From: Southwest Missouri
whats the difference between the normal vac line job and the simplification job? obviously it makes it easier, and i guess cuts the number of vac lines down...but what do you do with the lines that you dont replace? just plug up the holes, or what?
Reply
Old Mar 27, 2003 | 10:33 PM
  #39  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
Just wondering, how does this effect or gas mileage? I get 12 MPG, crappy, but willing to put up with with it for this car. After the simplification does the gas mileage get worse? by alot?
Reply
Old Mar 27, 2003 | 11:14 PM
  #40  
JONSKI's Avatar
5yr member, joined 2001
Tenured Member 15 Years
 
Joined: Dec 2001
Posts: 908
Likes: 1
From: Marco Island, FL
I couldn't tell you for sure, but I don't think it has a huge impact, if any. The simplification simply removes the emissions controls and the double throttle. The turbo system itself remains completely unchanged.
Reply
Old Mar 27, 2003 | 11:34 PM
  #41  
Zoomspeed's Avatar
Rotary Freak
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 1,564
Likes: 1
From: Wichita, KS, USA
this eliminaates the EGR system correct? doesn't that ahve an impact on the gas mileage? or is it a negligable difference?
Reply
Old Mar 28, 2003 | 12:56 AM
  #42  
suprfast's Avatar
Rotary Enthusiast
Tenured Member 10 Years
 
Joined: May 2001
Posts: 909
Likes: 1
From: home
without porting my wastegate, could this get rid of the boost creep that i am getting in the upper range?
kris
Reply
Old Mar 28, 2003 | 01:21 AM
  #43  
JONSKI's Avatar
5yr member, joined 2001
Tenured Member 15 Years
 
Joined: Dec 2001
Posts: 908
Likes: 1
From: Marco Island, FL
Zoomspeed,
The new EGR gaskets block off the EGR anyway. The EGR is only active at cruising and highway speeds, so if there is a difference, then you will see it there.


suprfast,
I doubt that the simplification will prevent boost creep. In my opinion, the name "turbo simplification" is a misnomer. In the simplification, all hoses and connections to turbo controlling parts are the same as the complete diagram. Besides, boost creep is caused by a wastegate that is either too small or not opening up all the way. A restrictor plate should help you prevent boost creep while you are waiting to port or fix your wastegate.
Reply
Old Mar 28, 2003 | 01:49 AM
  #44  
Full Member
Tenured Member 20 Years
iTrader: (1)
 
Joined: Nov 2002
Posts: 209
Likes: 2
From: Nipomo, CA.
I just finished re-installing the solenoid rack after replacing all hoses and just realized I replaced all the small hoses with 6mm not 4mm. I got the kit from hosetechiques. The 6mm does fit nice and tight and I tie wrapped every connection. Seems the only difference between the 2 sizes is wall thickness and yeah ID is smaller but both sizes have to stretch over the pipe/ solenoid nipples. So at this point the car has been down for over a month. I'm at the screwit point and will continue reassy. So will the 6mm with thinner wall hold stock boost pressure?

Thanks.
Reply
Old Mar 28, 2003 | 03:03 AM
  #45  
reza's Avatar
Rotary Enthusiast
Tenured Member 10 Years
 
Joined: Dec 2001
Posts: 1,252
Likes: 0
From: Sunnyvale, CA
my gas mileage is still bad.
i think gas mileage affected by various sensors that the computer decipher on how much gas to put. For some reason the sensors think the car is lean, so it dumps more gas into it.

replacing the O2 sensor will help, I think.

Reza
Reply
Old Mar 28, 2003 | 10:12 AM
  #46  
JONSKI's Avatar
5yr member, joined 2001
Tenured Member 15 Years
 
Joined: Dec 2001
Posts: 908
Likes: 1
From: Marco Island, FL
Originally posted by RX7 8U
So will the 6mm with thinner wall hold stock boost pressure?
I don't know, but we'll soon find out.
Reply




All times are GMT -5. The time now is 11:56 PM.