S4/GTS Intake Manifolds wearing out!
06-29-2020 | 06:10 PM
#16
Nordschleife Master
Joined: Jan 2009
Posts: 5,610
Likes: 82
From: MA
Since hand port matching is very expensive, I would hypothesize that the later casting revisions were modified to incorporate the hand port matching.
Most S4 intake manifolds that come off have so much baked oil on them that it’s impossible to tell what the runner surface finishing looks like without blasting them first.
Most S4 intake manifolds that come off have so much baked oil on them that it’s impossible to tell what the runner surface finishing looks like without blasting them first.