Dr.D
Octane Boost
Yes I'm wating for this answer. I like the look of the stock manifold also and do not care for the blued or bronze look of the Carpenter exhaust headers. Is Bob's pipe that much better?
Carpenter Questions
- Thread starter Azisbest
- Start date
JRock
Turbocharged
20 or 30 hp more with good headers.
Maybe more hp will be lost with a Carpenter rework and stock exhaust.
Maybe more hp will be lost with a Carpenter rework and stock exhaust.
Paul Bryant
Living Legend
The stock header is a seriously restrictive piece.
TTS in the U.K. make a stock looking, bigger diameter Header if that's what you would like.
I did look at doing this, but couldn't do it and retain the stock heat shields.
TTS have done it, I expect it would be expensive as it looks to be very labour intensive to build.
TTS in the U.K. make a stock looking, bigger diameter Header if that's what you would like.
I did look at doing this, but couldn't do it and retain the stock heat shields.
TTS have done it, I expect it would be expensive as it looks to be very labour intensive to build.
scot in exile
Living Legend
Should be able to break the 200 mark, I have the 210 kit with the carpenter sidewinder and three 2740????? the smaller K&Ns and my last dyno was 206HP
ratsidecar
.060 Over
The TTS header is £780 in the UK. I think Paul Bryant will make a crossover pipe to suit this headers larger outlet diameter.
Paul Bryant
Living Legend
Yes can do (make a cross over to suit)
That £780.00 is about the same price as one of my free flow headers.
Claviger
Aspiring Student
- Joined
- Jul 25, 2014
- Messages
- 6,934
- Location
- Olympia Washington
- Ride
- '21 Z H2, '14 R3R, '02 Daytona 955i
What I learned with my rocket modifying journey.
The power is all in the headers!!
I did a 192whp dyno on pump gas with CES and 265 cam and head... seems low right?!
192 * 1.06 = 203 on VP12, then add the missing power from using CES instead of Carpenter pipes 203+20 = 223.
Current build did 232 with pump gas and CES, and 251 on pump with carpenter headers. 251 * 1.06 = 266.06 on VP12, right where it should be.
So you start to see the difference. A stock header on a 210 kit bike would be lucky to break 165whp regardless of what muffler or crossover are on it in my opinion. So it’s a terrible investment, since you can hit 160 with just an exhaust change and tune. Remember the stock bike only makes mid 120s.
It’s not so much about the pipe diameter as it is pulse tuning and diameter together.
The power is all in the headers!!
I did a 192whp dyno on pump gas with CES and 265 cam and head... seems low right?!
192 * 1.06 = 203 on VP12, then add the missing power from using CES instead of Carpenter pipes 203+20 = 223.
Current build did 232 with pump gas and CES, and 251 on pump with carpenter headers. 251 * 1.06 = 266.06 on VP12, right where it should be.
So you start to see the difference. A stock header on a 210 kit bike would be lucky to break 165whp regardless of what muffler or crossover are on it in my opinion. So it’s a terrible investment, since you can hit 160 with just an exhaust change and tune. Remember the stock bike only makes mid 120s.
It’s not so much about the pipe diameter as it is pulse tuning and diameter together.
Last edited:
1olbull
Riding Motor Since 1950
Rob,
Where did you get the 1.06 constant from?
Was your was your 192 horsepower just from head work?
Claviger
Aspiring Student
- Joined
- Jul 25, 2014
- Messages
- 6,934
- Location
- Olympia Washington
- Ride
- '21 Z H2, '14 R3R, '02 Daytona 955i
1.06 is the 6% increase in power when using MR12 VP race gas, it’s oxygenated and fairly well documented to add 6% 
192 was with the big cam and head work.
192 was with the big cam and head work.
