EM TuningSky Insurance
Results 1 to 8 of 8
  1. #1
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Cheltenham
    Posts
    335

    AEB Exhaust Port Size

    Has anyone got a AEB head on the bench that they can measure the true exhaust port size?? (Mine is fitted and I want to do some porting port on a 'Chinafold' before fitting)

    Thanks

    Dave

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,533
    I think its 38mm.

    You dont want the manifold matched to the head, you need the head to be a tad smaller than the manifold to prevent/reduce exhaust gas reversion.
    Id take the manifold to gasket size if i were you. I know for a fact the gasket is bigger than the aeb exhaust ports.

  4. #3
    6th Gear

    Status
    Offline
    Join Date
    May 2010
    Location
    Bedford
    Posts
    2,877
    36mm and 33mm for small port.

    Cactus green 8L S3 - B5 TIP + Jetex, Revised 007p, R32 rear ARB, AP Coilovers, Compbrake rear arms, Full Powerflexed dogbone.

  5. #4
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Cheltenham
    Posts
    335
    36mm or 38mm, I have got a gasket so I can certainly measure that size.

    Thanks

  6. #5
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Cheltenham
    Posts
    335
    BTW Exhaust gasket is 41mm

  7. #6
    3rd Gear

    Status
    Offline
    Join Date
    Mar 2013
    Location
    Devon
    Posts
    613
    Quote Originally Posted by Jason.s View Post
    36mm and 33mm for small port.
    Yup, just measured my AEB head, the exhaust ports are 36mm.

    The AEB exhaust manifold measures 38.5 though, not that it's any use on a transverse car.

  8. #7
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,533
    If you leaving the head at 36 then its prob only worth having the mani 1 or 2 mm bigger.

  9. #8
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Cheltenham
    Posts
    335
    Perfect guys, just the information I require, a slight step head to manifold then, thanks very much for you time.

 

 

Similar Threads

  1. Exhaust tailpipe size??
    By Big Bird in forum Audi S4/A4/A4 Cab (B8 Chassis)
    Replies: 3
    Last Post: 22nd March 2010, 08:40
  2. aeb throttle body size
    By sam80quattro in forum A4/S4 forum(B5 Chassis)
    Replies: 0
    Last Post: 10th March 2010, 17:18
  3. Exhaust bore size
    By james0808 in forum Tuning
    Replies: 3
    Last Post: 10th July 2007, 19:15
  4. A4 1.8T exhaust pipe size
    By billybravo in forum A4/S4 forum(B5 Chassis)
    Replies: 3
    Last Post: 17th October 2006, 12:43

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO