new JETPRO dual bleed testing take 1

[tmrperformance]

well i just got my new JETPRO pipe, one of 2 made this way. its the same pipe BADBOY2 won here.. ONEIL BROS. will be the exclusive dealer of the chromed, slightly revamped version.

well to get started i had gotten a stock cy 26 (25.4cc) with 1 tank of fuel through it. it has a 668 carb with no choke and had a heli can for the first tests... this engine was run on 100 octane sunoco fuel mixed @ 40:1 with amsoil saber. uncorrected hp on the stocker with a good tune was 2.88hp and uncorrected tq was 1.65ftlbs.. now that was the best pull out of 5.. to show consistency and tune changes here are the previous runs

2.73hp
2.75hp
2.77hp
2.87hp (richened it up)
2.88hp (tune the same as above)


now i installed the JETPRO pipe and here are the shocking results!!!

after test 4 i noticed that the head gasket had blown, so i installed a new gasket for pulls 4 and 5! i have still yet to test it as a center bleed or end bleed, it also has an option of a silencer that joins the two bleeds which is on its way to me..

test 1: 3.94hp 2.10tq

test 2: 3.97hp 2.05tq

test 3: 4.00hp 1.76tq

test 4: 4.26hp 1.90tq

test 5: 4.15hp 2.08tq (on this pull the engine was a little colder than the pull above)

 

[tmrperformance]

here is the pipe!

 

[atom3624]

That's WEIRD mate!! mg:
If the numbers are right, it works !!
What's it sound like with twin side stingers?

 

[tmrperformance]

That's WEIRD mate!! mg:
If the numbers are right, it works !!
What's it sound like with twin side stingers?

its loud!!! a real screamer!

 

[rc killer]

this the same pipe i run on my drag car. the power is unreal very consistant. i pick up 2 tenths of a second useing this pipe was running 2.7 on a hot day. changed the pipe and ran 2.5s all day at 51 mph. this pipe really works with my O'Neill Brothers 30.5 zen motor. great combo.

 

[Martin_]

I'm surpirsed with all that bleed a pipe can perform like this....

It would be interesting to see the dyno sheet.