ZR-1 Net Registry Forums - Porting Injector castings

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jss06c6

12-08-2017 10:07 AM

Porting Injector castings

Gents,

Can the Injector castings be efficiently ported while retaining the secondaries?

secondchance

12-08-2017 01:59 PM

Re: Porting Injector castings

Quote:

Originally Posted by jss06c6 (Post 271496)

Gents,

Can the Injector castings be efficiently ported while retaining the secondaries?

You can port primaries only or, I imagine, have 8 butterflies custom made and reinstalled after porting the secondaries. Namely, this is why I had all secondary system, including vacuum system, taken out so that secondary intake could be ported.

XfireZ51

12-08-2017 02:22 PM

Re: Porting Injector castings

Quote:

Originally Posted by jss06c6 (Post 271496)

Gents,

Can the Injector castings be efficiently ported while retaining the secondaries?

The secondaries are in the cylinder head, not the injector housing. I guess I don't understand your question.
When I first ported the plenum and the IH, I also port matched the cylinder head runner and the port throttle mechanism remained albeit, tie wrapped open.

secondchance

12-08-2017 02:33 PM

Re: Porting Injector castings

XfireZ51 is correct. What was I thinking... Anyhoo, I had mine opened up all the way through.

jss06c6

12-10-2017 12:52 PM

Re: Porting Injector castings

You've answered the question. I don't want to pull the heads. I believe I can port match and modestly blend without removing the heads by stuffing the intake ports like I did on my LS2. I want to retain my secondaries..

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