Vacuum Reduction - Clutch Boost - No extra "T" - 3000GT/Stealth International Message Center
3000GT/Stealth International 3000GT/Stealth International
 

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   3000GT/Stealth International Message Center > Modifications and Technical Support > Engine - Turbo

3SI.org is the premier Mitsubishi 3000GT Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 04-15-2009, 10:50 PM   #1 (permalink)
Forum Member
 
3Sfever's Avatar
 
Join Date: May 2004
Location: Virginia
Drives: '91 Stealth TT
3Sfever is an unknown quantity at this point
Feedback Score: 5 reviews
Default Vacuum Reduction - Clutch Boost - No extra "T"

This may not be new idea, but I have not seen it done like this. Here is an alternative method of deleting the Clutch boost "accumulator" and all the hardlines going to front. This requires no extra "T" fitting or hose.

On the hardline that runs along the firewall --> Cut it off, and bend it towards the brake booster, then connect the brake booster short hose to it. Nothing extra to buy !! and it looks stock.

Crude Sketch:
https://www.3si.org/forum/attachments...-t-diagram.jpg
Attached Thumbnails
Vacuum Reduction - Clutch Boost - No extra "T"-vacuumlines.jpg   Vacuum Reduction - Clutch Boost - No extra "T"-vacuumline2.jpg  
__________________
-Ron
'91 Stealth TT
purchased Aug 2004 . . . now my son's . . as of Mar 2010

Last edited by 3Sfever; 08-21-2009 at 12:06 PM. Reason: added crude diagram
3Sfever is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 04-16-2009, 02:11 PM   #2 (permalink)
Forum Member
 
HLxDrummer's Avatar
 
Join Date: May 2006
Location: PA
Drives: 1993 VR4
HLxDrummer Level 1HLxDrummer Level 1
Feedback Score: 44 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

Awesome

Nice to know since I was going to do this soon and didn't know what size fittings and stuff to get. So you just plug the nipple on the plenum (closer to the TB) and cut/bend this pipe? Not other parts needed?
HLxDrummer is offline   Reply With Quote Quick reply to this message
Old 04-16-2009, 10:58 PM   #3 (permalink)
Forum Member
 
3Sfever's Avatar
 
Join Date: May 2004
Location: Virginia
Drives: '91 Stealth TT
3Sfever is an unknown quantity at this point
Feedback Score: 5 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

Quote:
Originally Posted by HLxDrummer View Post
So you just plug the nipple on the plenum (closer to the TB) and cut/bend this pipe? No other parts needed?
Exactly.

Care is needed to bend the pipe without kinking it, but other than that it is easy.

.
3Sfever is offline   Reply With Quote Quick reply to this message
 
Old 04-17-2009, 05:41 PM   #4 (permalink)
3S Owner since '04
 
jba3's Avatar
 
Join Date: Dec 2006
Location: Charles Town WV
Drives: until bearings spin
jba3 Level 1jba3 Level 1
Feedback Score: 29 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

I'm drawing a blank without looking at my motor. Are you saying, in that pic, that the top left line is the one you bent and connected?
__________________
95 VR4 Coupe, Red - Down since April 2012 (maintenance & lots of mods, including "divorce mod")

95 VR4 Spyder, Red - For sale @ GZP
95 VR4 Spyder, Black - Sold Dec 2012
jba3 is offline   Reply With Quote Quick reply to this message
Old 04-17-2009, 09:12 PM   #5 (permalink)
Forum Member
 
3Sfever's Avatar
 
Join Date: May 2004
Location: Virginia
Drives: '91 Stealth TT
3Sfever is an unknown quantity at this point
Feedback Score: 5 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

I was hoping to get some more pictures and a better description, but have been swamped the past few days.

Before I started there were two hardlines attached to the firewall. One was connected to the Intake (near the throttlebody) and ran to the brake master cylinder. That hard-line was removed completely, and intake port plugged. The short hose on Brake booster is retained, and connected to newly bent tube.

The lower hard-line on the firewall was connected to a hose near the battery area and ran to the clutch booster. . . . I cut that line, and bent the end toward the brake booster hose. That line has a "T" in it, (behind the brake booster) That "T" is connected to the checkvalve hose going to the intake on driver side.

The photo in opening post is editted to show where it was bent.

I will make a diagram later this weekend . . . pictures are always better than words.
3Sfever is offline   Reply With Quote Quick reply to this message
Old 04-18-2009, 08:34 PM   #6 (permalink)
Forum Member
 
3Sfever's Avatar
 
Join Date: May 2004
Location: Virginia
Drives: '91 Stealth TT
3Sfever is an unknown quantity at this point
Feedback Score: 5 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

This is the best free mod I have made to my car!!

As it turns out, my clutch booster was not receiving vacuum before, one of the lines was clogged up. . . wow it is SO much easier to push the clutch in now!! . . . no more tired left thigh at long traffic lights!

So I eliminated a bunch of added complexity, a little weight, and it actually works better!

.
3Sfever is offline   Reply With Quote Quick reply to this message
Old 04-20-2009, 12:04 AM   #7 (permalink)
Forum Member
 
3Sfever's Avatar
 
Join Date: May 2004
Location: Virginia
Drives: '91 Stealth TT
3Sfever is an unknown quantity at this point
Feedback Score: 5 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

I added a 2nd photo to the first post. . . Hopefully that will make things slightly more clear.

.
3Sfever is offline   Reply With Quote Quick reply to this message
Old 04-20-2009, 04:02 PM   #8 (permalink)
Forum Member
 
HLxDrummer's Avatar
 
Join Date: May 2006
Location: PA
Drives: 1993 VR4
HLxDrummer Level 1HLxDrummer Level 1
Feedback Score: 44 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

Thanks for the thread, I will be doing this soon I was going to buy the fittings, but this looks more appealing since it's so easy and cheap.
HLxDrummer is offline   Reply With Quote Quick reply to this message
Old 04-21-2009, 02:26 PM   #9 (permalink)
3S Owner since '04
 
jba3's Avatar
 
Join Date: Dec 2006
Location: Charles Town WV
Drives: until bearings spin
jba3 Level 1jba3 Level 1
Feedback Score: 29 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

That second picture definitely helps. I think I'll snap a photo of what I'm going to do and post it before I do it so I don't bone anything up.
jba3 is offline   Reply With Quote Quick reply to this message
Old 05-10-2009, 09:10 PM   #10 (permalink)
Forum Member
 
HLxDrummer's Avatar
 
Join Date: May 2006
Location: PA
Drives: 1993 VR4
HLxDrummer Level 1HLxDrummer Level 1
Feedback Score: 44 reviews
Default Re: Vacuum Reduction - Clutch Boost - No extra "T"

Alright, I'm probably going to do this soon. Any tips on bending the line without kinking it?

Any tips on getting the line out of the engine bay? I've never looked at the vacuum tank but I'm assuming it's easy to get out?

Also, what did you use to plug the nipple?

Last edited by HLxDrummer; 05-10-2009 at 09:18 PM.
HLxDrummer is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  3000GT/Stealth International Message Center > Modifications and Technical Support > Engine - Turbo

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the 3000GT/Stealth International Message Center forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Free email addresses do not work(yahoo, hotmail, gmail,...)
We are currently being blocked by AOL so any AOL based address may not work(aol.com, aim.com, netscape.net, cs.com)
Email Address:

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 04:44 PM.



Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
 

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.