Notices
Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.

how to tell a 9.8 hotside from a 10.5 hotside?

Thread Tools
 
Search this Thread
 
Old Jan 17, 2011, 05:46 PM
  #1  
Newbie
Thread Starter
iTrader: (4)
 
pettyboy69's Avatar
 
Join Date: Sep 2010
Location: idaho
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
how to tell a 9.8 hotside from a 10.5 hotside?

I just pulled the turbo off my evo 8 and before i posted it up for sale i wanted to check and verify what exhaust housing is on it. I know the compressor housing is stamped but im not sure if it was swapped out or not so i wanted to know how to verify the exhaust housing by itself.
Any help is appriciated thanx
Old Jan 17, 2011, 05:59 PM
  #2  
Evolved Member
iTrader: (5)
 
erald01's Avatar
 
Join Date: May 2009
Location: Detroit, MI
Posts: 1,081
Likes: 0
Received 0 Likes on 0 Posts
its engraved on the hotside, its the last number or something like that, if its a 10.5 it should say 10.5
Old Jan 17, 2011, 06:01 PM
  #3  
Evolving Member
iTrader: (2)
 
Alexl08's Avatar
 
Join Date: Jul 2009
Location: Mooresville nc
Posts: 271
Likes: 0
Received 0 Likes on 0 Posts
dual flapper door
Old Jan 17, 2011, 06:03 PM
  #4  
Evolved Member
iTrader: (5)
 
erald01's Avatar
 
Join Date: May 2009
Location: Detroit, MI
Posts: 1,081
Likes: 0
Received 0 Likes on 0 Posts
^^^not true i have an evo9 turbo with a dual flapper, so not all of them are single flappers
Old Jan 17, 2011, 06:23 PM
  #5  
Evolving Member
 
KX250Fmotoracer's Avatar
 
Join Date: Dec 2009
Location: NY
Posts: 214
Likes: 0
Received 1 Like on 1 Post
I have a 10.5cm^2 housing with a dual flapper as well.

There should be a number on the housing that tells you as others have said
The following users liked this post:
duong3577 (Jan 7, 2022)
Old Jan 17, 2011, 06:27 PM
  #6  
han
Newbie
iTrader: (2)
 
han's Avatar
 
Join Date: Sep 2009
Location: pa
Posts: 42
Likes: 0
Received 0 Likes on 0 Posts
https://www.evolutionm.net/forums/ev...s-9-turbo.html
Old Jan 17, 2011, 10:33 PM
  #7  
EvoM Guru
iTrader: (5)
 
MalibuJack's Avatar
 
Join Date: Feb 2003
Location: Royse City, TX
Posts: 10,569
Likes: 0
Received 9 Likes on 9 Posts
it should be on the hot side, usually on the twin-scroll flange. It will be 9.8 or 10.5. there was actually another size that was smaller used on the GTA version but was never offered in the USDM models.
Old Jan 18, 2011, 08:23 AM
  #8  
Evolved Member
iTrader: (9)
 
C6C6CH3vo's Avatar
 
Join Date: Feb 2005
Location: sc
Posts: 4,223
Likes: 0
Received 4 Likes on 4 Posts
Good to see you drop in!
Old Jan 18, 2011, 08:54 AM
  #9  
Evolved Member
iTrader: (38)
 
gsrboi80's Avatar
 
Join Date: Aug 2005
Location: On a cliff
Posts: 7,906
Received 45 Likes on 41 Posts
Originally Posted by MalibuJack
it should be on the hot side, usually on the twin-scroll flange. It will be 9.8 or 10.5. there was actually another size that was smaller used on the GTA version but was never offered in the USDM models.
Originally Posted by C6C6CH3vo
Good to see you drop in!
Sorry for the OT. But agreed nice to see ya man
Old Jan 18, 2011, 02:35 PM
  #10  
Evolved Member
iTrader: (1)
 
awdordie's Avatar
 
Join Date: Dec 2010
Location: tennessee
Posts: 1,203
Likes: 0
Received 1 Like on 1 Post
The actual turbine housing does not say or have a 9.8 or 10.5. Only thing stamped into the turbine housing is a part #. There are three different housings the dual flapper 9.8 from 03 to 04 evo 8. The 10.5 double flapper from the 05 evo 8. Which is also called the evo 8.5 due to the same size compressor housing but it has the 10.5 hotside. And finally the single flapper 10.5 from 06 to 07 evo 9s. The stamped hotside has two different part numbers I will post them when I get home. An easy way to tell is looking at the o2 housing like its on the car from the front the single flapper 10.5 will have a semi circle machined out of the flange that connects to your manifold. The evo 8 dual flapper does not. Also the dual flapper part # is considerably longer than the dual flapper. A quick reference for wat the semi circle thing I referred to is on fp website where they sell the single flapper. U can also see the part number there.

Last edited by awdordie; Jan 18, 2011 at 03:19 PM.
Old Jan 18, 2011, 03:15 PM
  #11  
Evolved Member
iTrader: (1)
 
awdordie's Avatar
 
Join Date: Dec 2010
Location: tennessee
Posts: 1,203
Likes: 0
Received 1 Like on 1 Post
The following is the part # for the 03 to 04 stock dual flapper 9.8 hotside housing 78-13010 115. Above that number it is stamped with a 281. I also just noticed on the inside lip of the twin scroll opening closest to the compressor side it has 098 inside the opening. U would have to remove the housing to see this therefore confirming it is the 9.8 housing. Here is the link to the single flapper hotside which shows the semi circle I was talking about in the bottom picture and the part # in the top picture. http://store.forcedperformance.net/m...Lancer-Exhaust
That # is accurate as this is the number on mine and I got it from someone with a evo 9 hopes this helps.

Last edited by awdordie; Jan 18, 2011 at 03:21 PM.
Old Jan 18, 2011, 03:34 PM
  #12  
Newbie
Thread Starter
iTrader: (4)
 
pettyboy69's Avatar
 
Join Date: Sep 2010
Location: idaho
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by awdordie
The following is the part # for the 03 to 04 stock dual flapper 9.8 hotside housing 78-13010 115. Above that number it is stamped with a 281. I also just noticed on the inside lip of the twin scroll opening closest to the compressor side it has 098 inside the opening. U would have to remove the housing to see this therefore confirming it is the 9.8 housing. Here is the link to the single flapper hotside which shows the semi circle I was talking about in the bottom picture and the part # in the top picture. http://store.forcedperformance.net/m...Lancer-Exhaust
That # is accurate as this is the number on mine and I got it from someone with a evo 9 hopes this helps.
this is exactly what i was asking, it is the stock exhaust housing. Thanx a lot man
Old Jan 18, 2011, 10:02 PM
  #13  
Evolved Member
iTrader: (1)
 
awdordie's Avatar
 
Join Date: Dec 2010
Location: tennessee
Posts: 1,203
Likes: 0
Received 1 Like on 1 Post
Originally Posted by pettyboy69
this is exactly what i was asking, it is the stock exhaust housing. Thanx a lot man
No prob.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GSX_TO_EVO
Evo General
4
Sep 6, 2016 07:00 AM
lancerrally45
Evo Dyno Tuning / Results
24
Jun 29, 2015 06:20 AM
DisgustipatedM3
For Sale - Wanting To Buy (WTB) Or Trade (WTT)
2
Mar 1, 2013 02:50 PM
Brigganator
Evo General
8
Feb 28, 2013 05:28 PM
midegade
Evo Engine / Turbo / Drivetrain
15
Mar 9, 2011 06:45 PM



Quick Reply: how to tell a 9.8 hotside from a 10.5 hotside?



All times are GMT -7. The time now is 05:15 AM.