Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Garage > Performance and Tuning

Notices

Low boost with S/C install

Reply
 
Thread Tools Search this Thread
Old 03-25-2012, 09:00 PM   #1
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
Low boost with S/C install

I just finished up my install of a TRD s/c on my '02 3.4 tacoma. I also installed with it the URD 2.2 pulley and 7th injector kit. I've noticed that is only maxing out at 5-5.5 lbs of boost. With the URD set up I was expecting around 9 lbs. Not sure exactly what's causing this. It definately feels somewhat sluggish for being charged. It doesn't feel as fast as it should. Also, The S/C is a used, rebuilt 2nd gen.

Can anyone help out with this? Any suggestions are welcome.
  Reply With Quote
Old 03-26-2012, 11:09 AM   #3
Senior Member
skytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shed
 
skytower's Avatar
Navy: Gunners Mate
Name: Dave
Joined: Jun 2010, #38505
Location: virginia
Gender: Male
Posts: 3,185
skytower's Tacoma Gallery
Check all the connections for leaks after the SC. Use soapy water, look for bubbles.
  Reply With Quote
Old 03-26-2012, 08:31 PM   #4
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
Thanks for the suggestions.

Today, I checked for dust build up from belt slipping and didn't see any. I didn't think belt slipage would be an issue with the URD pulley and a brand new belt. Also, i double checked the throttle body gasket to insure it was installed correctly as well as the check valve.

I replaced many the vac lines with brand new ones and don't seem to see any leaks. I'll try out the water trick tomorrow though.

I tested the bypass valve actuator and it doesn't stay fully open when i disconnect the vac line, open it up, cover the vac connection and let the lever go. It closes about half way before catching. I'll probably call magnuson tomorrow to order a new actuator if I don't find any vac leaks.
  Reply With Quote
Old 03-26-2012, 10:31 PM   #5
Dark Lord of the Sith
wrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shed
 
wrmathis's Avatar
Army: Tech Insp: 404 ASB/4th CAB
Name: Ryan Mathis
Joined: Sep 2008, #9126
Location: Lives: Fountain, Colorado/Home: Leesburg, GA
Age: 33
Gender: Male
Posts: 6,497
wrmathis's Tacoma Gallery
Send a message via ICQ to wrmathis Send a message via Yahoo to wrmathis
Quote:
Originally Posted by boostedka View Post
Thanks for the suggestions.

Today, I checked for dust build up from belt slipping and didn't see any. I didn't think belt slipage would be an issue with the URD pulley and a brand new belt. Also, i double checked the throttle body gasket to insure it was installed correctly as well as the check valve.

I replaced many the vac lines with brand new ones and don't seem to see any leaks. I'll try out the water trick tomorrow though.

I tested the bypass valve actuator and it doesn't stay fully open when i disconnect the vac line, open it up, cover the vac connection and let the lever go. It closes about half way before catching. I'll probably call magnuson tomorrow to order a new actuator if I don't find any vac leaks.
it might not be the belt or the pulley, it could be ur tensioner pulley not putting enough tension on the belt causing it to slip
  Reply With Quote
Old 03-26-2012, 10:46 PM   #6
Senior Member
amain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shedamain is one of the sharper tools in the shed
 
amain's Avatar
Name: Brian
Joined: Sep 2011, #63744
Location: Washington
Gender: Male
Posts: 126
amain's Tacoma Gallery
I thought you would only get 6lbs boost not 9. You might want to talk to Gadget at URD to see what you should expect.
  Reply With Quote
Old 03-27-2012, 06:37 AM   #7
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
Good ideas. I'll try calling URD today and see what gadget has to say about the ecpected boost. Is there anyone on here that lives around 4800ft elevation that is charged that can tell how much boost they are producing?

As far at the tensioner, it is a dynamic tensioner so i'm not really sure how I would be able to know if the tensioner is slipping. WOuld the belt do something that I could see visually when reving the motor from in the engine bay?

Thanks for the help.
  Reply With Quote
Old 03-27-2012, 06:52 AM   #8
Senior Member
PkTaco is a glorious beacon of lightPkTaco is a glorious beacon of lightPkTaco is a glorious beacon of lightPkTaco is a glorious beacon of lightPkTaco is a glorious beacon of light
Name: David
Joined: Sep 2010, #43154
Location: Zanesville Ohio
Gender: Male
Posts: 626
PkTaco's Tacoma Gallery
How tight is your belt. You should be pretty darn taunt.
  Reply With Quote
Old 03-27-2012, 08:13 AM   #9
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
From what i can remember, seems like i can push it in with my finger maybe about a 1/4" to 1/2".
  Reply With Quote
Old 03-27-2012, 08:31 AM   #11
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
I noticed that when i rev the engine in neutral from under the hood, the belt sort of "flaps" in the area that goes from the dynamic pulley up to the S/C pulley. NOt sure if this is normal. Could my pulley tensioner be losing strength being a used unit?
  Reply With Quote
Old 03-27-2012, 08:46 AM   #13
Senior Member
PkTaco is a glorious beacon of lightPkTaco is a glorious beacon of lightPkTaco is a glorious beacon of lightPkTaco is a glorious beacon of lightPkTaco is a glorious beacon of light
Name: David
Joined: Sep 2010, #43154
Location: Zanesville Ohio
Gender: Male
Posts: 626
PkTaco's Tacoma Gallery
Quote:
Originally Posted by boostedka View Post
From what i can remember, seems like i can push it in with my finger maybe about a 1/4" to 1/2".
Needs to be tighter, Should move like an 1/8 inch or less.
  Reply With Quote
Old 03-27-2012, 08:50 AM   #14
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
can this be accomlished by adjusting the alternator bracket or do I need to replace the tensioner?
  Reply With Quote
Old 03-27-2012, 09:09 AM   #16
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
Quote:
Originally Posted by Torspd View Post
Take a look see at the alternator tensioner, and see what you can find out.
Sounds good. I'll mess with that today after work. Thanks for the helpful suggestions
  Reply With Quote
Old 03-27-2012, 09:56 AM   #17
Dark Lord of the Sith
wrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shedwrmathis is one of the sharper tools in the shed
 
wrmathis's Avatar
Army: Tech Insp: 404 ASB/4th CAB
Name: Ryan Mathis
Joined: Sep 2008, #9126
Location: Lives: Fountain, Colorado/Home: Leesburg, GA
Age: 33
Gender: Male
Posts: 6,497
wrmathis's Tacoma Gallery
Send a message via ICQ to wrmathis Send a message via Yahoo to wrmathis
Quote:
Originally Posted by boostedka View Post
Good ideas. I'll try calling URD today and see what gadget has to say about the ecpected boost. Is there anyone on here that lives around 4800ft elevation that is charged that can tell how much boost they are producing?

As far at the tensioner, it is a dynamic tensioner so i'm not really sure how I would be able to know if the tensioner is slipping. WOuld the belt do something that I could see visually when reving the motor from in the engine bay?

Thanks for the help.
i wasnt talkin bout the tensioner slipping. was talkin bout it not makin the belt tight enough causing the belt to slip, but anyways i think u figured out what i was talking about with what everyone else was sayin
  Reply With Quote
Old 03-27-2012, 11:42 AM   #18
boostedka [OP] boostedka is offline
Member
boostedka is on a distinguished road
Joined: Sep 2011, #64367
Location: Los Lunas, NM
Gender: Male
Posts: 35
boostedka's Tacoma Gallery
Thanks for clarifying. That makes sense.

Also, I talked with Gadget at URD and he said that the altitude I'm at is probably causing a decrease in the amount of boost. I did some research to follow this up and found that theoretically I should probably see about a 2.5 lbs decrease in boost pressure due to being at ~5,000 ft. Could this be accounting for the full loss of boost or is there possibly something else at play in addition to the altitude?
  Reply With Quote
Old 03-27-2012, 12:36 PM   #20
Senior Member
skytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shed
 
skytower's Avatar
Navy: Gunners Mate
Name: Dave
Joined: Jun 2010, #38505
Location: virginia
Gender: Male
Posts: 3,185
skytower's Tacoma Gallery
Leaks and altitude.
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
3.6L S/C Low Boost Pressure Problems jarondenson Performance and Tuning 13 11-01-2011 10:35 AM
Boost gauge install imtwistd Performance and Tuning 2 02-02-2011 06:14 AM
Toytec install quote....high or low??? jmed99 Suspension 53 04-01-2010 09:55 PM
Hid Install help Bright indicator on when low beams are on Jeremyjet1 Lighting 3 08-14-2009 12:24 AM
Low clearance Amp install with fans? Tricky Mike Audio & Video 1 02-12-2009 06:38 PM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.