My 2 into 1 project now with dyno print out

mik_str · Post by **mik_str** » Sat May 12, 2012 1:48 pm

Nicely done

Just curious as to what you ended up doing with the collector and diameter of the link pipe and can you used.

FWIW, I ran a similar set-up (link mated up to collector cut shortly after where pipes join) up. I used a 98 R1 Blue Flame twin-port high-mount can and link pipe (52mm IIRC). The results I got were a very, very slight increase in peak power (@ 0.5 bhp) but a drop in overall torque (@ 2 lb-ft ) with a significant dip in the curve between 4800-6500 rpm.

lloydie · Post by **lloydie** » Sat May 12, 2012 2:04 pm

the link pipe is 48mm in side and 52mm od so the pipes is 2mm thick .
the can is a 52mm in and 52mm out , the can is a scorpion race can and is 50mm longer than the other cans i had ..
all i did to the headers is remove the out lets section . this gave me a nice big 48mm od pipe to connect my link pipe up to.
and i cleaned up the welds on the in side of the collects where it meets the engine , but i havent fitted the modified rear down pipe so the welds are still there on the fitted one .

rob... · Post by **rob...** » Sat May 12, 2012 3:04 pm

looks a bit rich on the A/F, theres another couple of ponies in there with some more dyno time....

Snoogle · Post by **Snoogle** » Sat May 12, 2012 3:36 pm

Good work mate!!

Looks nice too

VTRDark · Post by **VTRDark** » Sat May 12, 2012 9:39 pm

Good day at the dyno then. At least you came out with an improvement.

RESULT. Can sounds good mate, pop pop pop pop pop pop pop pop pop....... or is that POP POP POP POP POP POP POP ....

(:-})

lloydie · Post by **lloydie** » Sat May 12, 2012 11:18 pm

thanks guys it was a good day as i was expecting a loss and a big flat spot .
ignition advancer next and then im taking to j38 dyno to be setup properly (later this year i hope)

lloydie · Post by **lloydie** » Sun May 13, 2012 10:55 am

The only down side to it now is its a little bit more lumpy below 3.5k

agentpineapple · Post by **agentpineapple** » Sun May 13, 2012 11:06 am

its looking and sounding really good lloydie, you make me wish i'd kept to my original idea of a single exit exhaust........

and your video made me laugh YEAH!!!!!!!!

Post by **sirch345** » Sun May 13, 2012 7:11 pm

Very interesting results Lloydie, much better than I had first thought

Chris.

lloydie · Post by **lloydie** » Sun May 13, 2012 9:51 pm

sirch345 wrote:Very interesting results Lloydie, much better than I had first thought

Chris.

(interesting) dont you mean shocked because i was

AMCQ46 · Post by **AMCQ46** » Sun May 13, 2012 10:02 pm

It's going to run well when you get the jetting fixed

tony.mon · Post by **tony.mon** » Mon May 14, 2012 6:10 pm

Seems that the restriction in the standard system is from the collector back....
Which is very good news, as a big bore exhaust will give good results.......
Mind you, doesn't the printout show 136Bhp at 10,002 rpm?
What on earth happened there?

lloydie · Post by **lloydie** » Mon May 14, 2012 6:55 pm

When he hit the limiter it spiked lol .
Yep the rear splitter is very restrictive .
I was thinking about making a bigger bore split link pipe to fit on to the 2-1 headers so to turn it back into a 2-1-2 but without the restriction . But that can wait till next year

Post by **sirch345** » Sun May 20, 2012 9:21 pm

lloydiecbr wrote:
sirch345 wrote:Very interesting results Lloydie, much better than I had first thought

Chris.
(interesting) dont you mean shocked because i was

yes that as well

Chris.

lloydie · Post by **lloydie** » Wed May 23, 2012 11:18 am

Modified my other headers today in to a 2-1

.i just need to get a new rear down pipe to collector gasket before I can fit them .

And when I modified these I got a nice clean cut with a smaller cutting disc .
So now I have the rear collector in one piece

now I can take that to the exhaust shop (when funds are better) to use as a template for a bigger bore section . But have it removable

so I swap and change between the two .

The other 2-1 headers will be up for sale next week after they have been sand blasted

VTR1000.ORG