Ive found a new way to port your engine - Car Racing Forums at Circle Track Magazine Circle Track
Facebook

Ive found a new way to port your engine

  
User Name:
Password:
Join FREE Now!
Forgot Password?
Forgot User Name?
Remember Me
PRI Trade Show
Home | Active Posts | Search | Register | Terms | FAQs
Rss
Item Posts    Sort Order

Ive found a new way to port your engine

 
smokingwheels smokingwheels
I watched NASCAR once | Posts: 1 | Joined: 11/09
Posted: 11/26/09
11:50 PM

I don't know if this is the right place to post this?

I have found some amazing things with air flow and fuel
consumption when porting a head and manifold with a wire wheel.
My port looks like this and so does the manifold.


I have a 1986 Nissan Bluebird wagon 2000 cc (no EFI on this one).
I have improve fuel efficiency under highway driving conditions and
have poor fuel efficiency under full load but seem to have more
power I don't have any figures sorry.

I was wondering if anybody has a flow bench handy and some
spare time to bore out PVC pipe with a wire wheels as a test,
having 2 the of same length and one to compare flow to?
I had a primitive test setup that used 2 vacuum cleaners with a tee
connected to a tube in a bucket of water, I found that the head of
water did not go up very much when I was connected the tee to
the inlet port with the manifold attached and I also found when I
moved the tee about 10mm down from the port the reading when
negative eg in free air I had about 110 mm of head then it went
down to about 50 mm, it was a 32 mm tee with a short piece of 25
mm pipe inside.    
In my test I found that the intake track 620 mm with out the valve
had the same resistance (head) as a piece of 25mm PVC pipe 45
mm long.

Ignition control, well I can't find any around to do what I want
I have a normal Toshiba laptop with my own program controlling
the timing on my engine, its a bit limited because I only have 3
inputs to control my timing over the load range,
so I put a request into the MSD engineers the other day.
http://www.msdignition.com/forum/showthread.php?t=14464]

My engine timing is also very different the timing is linear with rpm
and is quite lower as well (closer to TDC).
see pic



I have a web site Web site if anybody is interested.

I have a video of fuel flowing from Vacuum secondary port on you
tube to prove the increase in air flow.
Air Flow with no load revving