Single Turbo RX-7's Questions about all aspects of single turbo setups.

CHRA stuck, will not rotate in exhaust housing.

Thread Tools
 
Search this Thread
 
Old Sep 12, 2015 | 08:16 PM
  #1  
dradon03's Avatar
Thread Starter
Derwin
Tenured Member 10 Years
iTrader: (2)
 
Joined: Apr 2005
Posts: 2,888
Likes: 0
From: MTL, QC
CHRA stuck, will not rotate in exhaust housing.

I figure some of you may have run into a similar situation.

Need to rotate the CHRA to have the drain in the proper position.

Garret unit with 6 bolt setup.

So far have tried :
-PB Blaster
-Diesel soak
-ATF soak
-Heated joint with propane.

It just won't budge any help/ideas appreciated.
Reply
Old Sep 12, 2015 | 08:51 PM
  #2  
gxl90rx7's Avatar
destroy, rebuild, repeat
Tenured Member: 20 Years
iTrader: (1)
 
Joined: May 2004
Posts: 2,991
Likes: 17
From: Charleston, SC
not sure if you are trying to rotate while its pressed in or not, first try to remove it from the housing, then place at desired clocking, then tighten clamps to press it back in. sometimes the clamp bolts line up so as you unbolt the housing, the bolts push the chra off
Reply
Old Sep 12, 2015 | 09:07 PM
  #3  
dradon03's Avatar
Thread Starter
Derwin
Tenured Member 10 Years
iTrader: (2)
 
Joined: Apr 2005
Posts: 2,888
Likes: 0
From: MTL, QC
Originally Posted by gxl90rx7
not sure if you are trying to rotate while its pressed in or not, first try to remove it from the housing, then place at desired clocking, then tighten clamps to press it back in. sometimes the clamp bolts line up so as you unbolt the housing, the bolts push the chra off
I appreciate the reply, the way the housing is clocked at the moment it is impossible to unbolt the housing.

With the Garrett CHRA is there are only two bolts that unbolt glat being the water fittings.

Last edited by dradon03; Sep 12, 2015 at 09:10 PM.
Reply
Old Sep 12, 2015 | 09:14 PM
  #4  
Turblown's Avatar
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Rubber Mallet.
__________________
Rotary Performance Parts


Reply
Old Sep 13, 2015 | 07:55 PM
  #5  
dradon03's Avatar
Thread Starter
Derwin
Tenured Member 10 Years
iTrader: (2)
 
Joined: Apr 2005
Posts: 2,888
Likes: 0
From: MTL, QC
Originally Posted by Turblown
Rubber Mallet.
Beat on it with a hammer never really worked for me when it comes to working on cars.

Especially with something tolerance sensitive and made of sensitive materils I would have thought there was another solution
Reply
Old Sep 14, 2015 | 09:10 AM
  #6  
j9fd3s's Avatar
Moderator
Community Builder
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Mar 2001
Posts: 31,837
Likes: 3,234
From: https://www2.mazda.com/en/100th/
i've never really been able to get a chra to rotate, i have to pop it out, re-oreient it in the air and put it back.
Reply
Old Sep 14, 2015 | 11:01 AM
  #7  
jetlude's Avatar
BadAss DoItYourselfer
Tenured Member: 15 Years
iTrader: (9)
 
Joined: Jun 2008
Posts: 870
Likes: 4
From: Paradise
Originally Posted by dradon03
Beat on it with a hammer never really worked for me when it comes to working on cars.

Especially with something tolerance sensitive and made of sensitive materils I would have thought there was another solution
Sometimes its the only way to release them, especially if its rusted and been sitting in that position for long periods of time. You just have to know how and where to tap it.
Reply
Old Sep 17, 2015 | 09:54 PM
  #8  
dradon03's Avatar
Thread Starter
Derwin
Tenured Member 10 Years
iTrader: (2)
 
Joined: Apr 2005
Posts: 2,888
Likes: 0
From: MTL, QC
Originally Posted by jetlude
Sometimes its the only way to release them, especially if its rusted and been sitting in that position for long periods of time. You just have to know how and where to tap it.
Was succesful at the end. I know the vibration is sometimes needed to break the rust bond just didn't feel right.

The solution for me was heat and the mallet with some protection. Protection in the form of a feeler gauge.

Basically, I used the feeler gauge to see the thickness with the housing on and hitting it in an x pattern measured throughout the process without letting it get to half to tolerance from square.

It may have taken me longer but when it came apart there was no damage, the culprit was a spec of rust on the interior flange that the CHRA and exhaust houaing meet.

All better now thank you for the responses hope this can help anyone in the future.
Reply
Old Sep 18, 2015 | 05:57 AM
  #9  
jetlude's Avatar
BadAss DoItYourselfer
Tenured Member: 15 Years
iTrader: (9)
 
Joined: Jun 2008
Posts: 870
Likes: 4
From: Paradise
Originally Posted by dradon03
was succesful at the end. I know the vibration is sometimes needed to break the rust bond just didn't feel right.

The solution for me was heat and the mallet with some protection. Protection in the form of a feeler gauge.

Basically, i used the feeler gauge to see the thickness with the housing on and hitting it in an x pattern measured throughout the process without letting it get to half to tolerance from square.

It may have taken me longer but when it came apart there was no damage, the culprit was a spec of rust on the interior flange that the chra and exhaust houaing meet.

All better now thank you for the responses hope this can help anyone in the future.
np
Reply




All times are GMT -5. The time now is 07:29 PM.