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Re: My 2 into 1 project now with dyno print out
Posted: Sat May 12, 2012 1:48 pm
by mik_str
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.
Re: My 2 into 1 project now with dyno print out
Posted: Sat May 12, 2012 2:04 pm
by lloydie
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 .
Re: My 2 into 1 project now with dyno print out
Posted: Sat May 12, 2012 3:04 pm
by rob...
looks a bit rich on the A/F, theres another couple of ponies in there with some more dyno time....
Re: My 2 into 1 project now with dyno print out
Posted: Sat May 12, 2012 3:36 pm
by Snoogle
Good work mate!!
Looks nice too
Re: My 2 into 1 project now with dyno print out
Posted: Sat May 12, 2012 9:39 pm
by VTRDark
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 ....
(:-})
Re: My 2 into 1 project now with dyno print out
Posted: Sat May 12, 2012 11:18 pm
by lloydie
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)
Re: My 2 into 1 project now with dyno print out
Posted: Sun May 13, 2012 10:55 am
by lloydie
The only down side to it now is its a little bit more lumpy below 3.5k
Re: My 2 into 1 project now with dyno print out
Posted: Sun May 13, 2012 11:06 am
by agentpineapple
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!!!!!!!!
Re: My 2 into 1 project now with dyno print out
Posted: Sun May 13, 2012 7:11 pm
by sirch345
Very interesting results Lloydie, much better than I had first thought
Chris.
Re: My 2 into 1 project now with dyno print out
Posted: Sun May 13, 2012 9:51 pm
by lloydie
sirch345 wrote:Very interesting results Lloydie, much better than I had first thought
Chris.
(interesting) dont you mean shocked because i was
Re: My 2 into 1 project now with dyno print out
Posted: Sun May 13, 2012 10:02 pm
by AMCQ46
It's going to run well when you get the jetting fixed
Re: My 2 into 1 project now with dyno print out
Posted: Mon May 14, 2012 6:10 pm
by tony.mon
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?
My 2 into 1 project now with dyno print out
Posted: Mon May 14, 2012 6:55 pm
by lloydie
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
Re: My 2 into 1 project now with dyno print out
Posted: Sun May 20, 2012 9:21 pm
by sirch345
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.
My 2 into 1 project now with dyno print out
Posted: Wed May 23, 2012 11:18 am
by lloydie
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