Exhaust Manifold..

  1. Saxperience Post Whore Joined: Nov 2006 West Sussex Posts: 5769 Passat Oil Burner
    #1
    Is it possible to bore out the exhaust exits on the engine to get more and better flow out of the engine. Just wondering really if it was possible and worth doing, Obviously would need a custom manifold made.
  2. Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)
    #2
    it is possible but the gains if any would be questionable and expensive. I'd look elsewhere to tune. You can improve gas flow by working on the exhaust ports though
  3. Saxperience Forum Bum Joined: Dec 2005 London Posts: 3416
    #3
    just port and polish the head mate widen the inlets and outlets

    no point just doing outlets tho should do em both to make it breath rite

    its piss to do ive been doing it at college alot now, but if i was you id buy the same head as you got and work on that, dont go ripping ur working engine apart anf fucking it up