Almost finished porting my spare intake manifold. Got all the ports done and now just need to work on the throttle body inlet.
Intake Manifold before porting with VTCS butterflies still in
With the VTCS flaps removed there is a large ridge inside the ports
Grinding away the large hump in cylinder one where the end of the VTCS shaft goes
After this I finally got some marking compound and really got to work
And now all that's left is the inlet. As you can see they drilled the inlet off center.
Intake Manifold before porting with VTCS butterflies still in
With the VTCS flaps removed there is a large ridge inside the ports
Grinding away the large hump in cylinder one where the end of the VTCS shaft goes
After this I finally got some marking compound and really got to work
And now all that's left is the inlet. As you can see they drilled the inlet off center.