Register
Results 1 to 8 of 8
  1. #1
    Banned
    Join Date
    Jun 2008
    Location
    Slough
    Posts
    1,030

    4age bluetop and redtop

    just reading up on forums about 4age's whats the real benifit of using a redop bottom end and blue top head on my ae86??

    cheers

    saq

  2. #2
    Swiss quality
    Join Date
    Jun 2005
    Location
    Khartoum/Sudan - Switzerland
    Posts
    682
    none realy aslong as you have sub 200hp...

  3. #3
    Banned
    Join Date
    Jun 2008
    Location
    Slough
    Posts
    1,030
    ok another question is i have a redtop tvis engine out of a ae92 will my blutop 4age inlet fit on or do i need an adapter plate?

  4. #4
    Swiss quality
    Join Date
    Jun 2005
    Location
    Khartoum/Sudan - Switzerland
    Posts
    682
    not 100% but I think the redtop TVIS have been bigports too so yes... if the head is a smallport you need some work done to fit your inlet.

  5. #5
    T me sasta :D
    Join Date
    Jun 2005
    Location
    Cambs
    Posts
    817
    It bolts to the ehad but the ports are completely different.
    It will seal but will flow shit and screw with the power delivery.

    Either cut and turn the manifold or cut and swap the end plates fo r the TB.
    Note youll need to make a linkage adaptor.

  6. #6
    Banned
    Join Date
    Jun 2008
    Location
    Slough
    Posts
    1,030
    and to avoid that could i just wack the blue top head onto the redtop engine

  7. #7
    T me sasta :D
    Join Date
    Jun 2005
    Location
    Cambs
    Posts
    817
    Narrow port head is better.
    Get a manifold and have it cut and turned.

    google images on the subject.
    Youll see.

  8. #8
    dorifto kingu!
    Join Date
    Nov 2004
    Location
    Northweazy
    Posts
    516
    red top from an ae92 can be big or small port only late ones are small port 1990 to 1992

    if its big it all bolts together but it is a better engine than the blue top miarginaly and not noticably it has 7rib block higher compresion etc etc

    if its small port its definatly worth the efort to fit it just cut the inlet manifold and have some one weld it the other way round

    driveing wise its got noticable more torque and power than the big port and makes a real difference in the 86

    use big port cams in the small port engine for a small increase too (they have more lift and duration only a bit tho)

    if you do change heads use the 7afe head gasket (corolla/avensis 1.8 engine) as this is the same as the TRD metal one

    all ther differences are in the club4ag tech section
    Last edited by H7ERO; 16-03-2010 at 16:31.
    RUN FREE TAKE A GOODLINE then V8 the mofo ..then boost it...then avoid the POlice
    V8 Fourcam 32 JZA80, Vortech.

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •