SR intake, Porting or Extrude hone?
Thread Starter
2nd Gear
Joined: Feb 2003
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From: Dededo Guam
SR intake, Porting or Extrude hone?
What is the best way to get maximum airflow through a Super ram intake manifold having it ported or getting it Extrude honed or a combination of both?
Le Mans Master
Joined: Mar 2002
Posts: 5,889
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From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Re: SR intake, Porting or Extrude hone? (Danbien)
Hand port and blend then extrude hone if you need the absolute max out of it. I've read about SRs flowing as much as 280 CFMs, but have never actually talked to anybody that has one and flowed it himself to determine those kind of numbers. I just went thru this, here's the thread: http://forums.corvetteforum.com/zerothread?id=493089
Good luck to you! :cheers:
Good luck to you! :cheers:
Instructor
Joined: Mar 2002
Posts: 239
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From: Fredericksburg VA
Re: SR intake, Porting or Extrude hone? (Caboboy)
I just wanted to make a comment regarding the intake/head flow test with the throttle body installed. If you flow the entire setup, the pressure drop should be referenced near the runner entry inside the plenum (static). That way the losses through the throttle body won't be subtracted from the runner/port/valve flow rating when you do your engine analysis. The cylinder draws air from the runner, and then air and pressure from the entire manifold.
The flow through the air filter/snorkle/MAF/throttle body should be evaluated separately. Your engine analysis uses this flow rating to calculate average pressure in the plenum.
So your intake flow values are a little better than you think.
The flow through the air filter/snorkle/MAF/throttle body should be evaluated separately. Your engine analysis uses this flow rating to calculate average pressure in the plenum.
So your intake flow values are a little better than you think.
Thread Starter
2nd Gear
Joined: Feb 2003
Posts: 2
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From: Dededo Guam
Re: SR intake, Porting or Extrude hone? (Caboboy)
Thanks guys, That's the info I needed. Another question, I know that the RPM range of a manifold largely related to runner length but did anyone gain RPM by porting or extrude honing the manifold. Can the SR intake be used effectively to 6500 rpm?
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Re: SR intake, Porting or Extrude hone? (Danbien)
You'll get something out of it, but not anything approaching 6500. Off the top of my head, I'd guess 6000 tops if the rest of your setup is complimentary. Is this an existing motor and parts, or a new plan? If you want RPMs, you'd be better off with a miniram.........
Be careful matching your heads and cam to whatever intake you settle in on too, good luck!
Be careful matching your heads and cam to whatever intake you settle in on too, good luck!
