[Buttermilk]

Redline,

Here's a dyno chart comparing the TRX11 centermount vs. the TRX5 std. mount on the same engine back to back on the dyno with NO changes to anything other than a pipe swap.

Run 022 is the TRX5 std. mount
Run 030 is the TRX11 center mount

 

[REDLINE]

Thanks Buttermilk. Is that a/f ratio on the trx 5 run real? or was it an anomoly? There was definately a few more hp available judging from the trx 11 a/f curve.

 

[Fouledout421]

QUOTE (REDLINE @ Aug 15 2008, 12:45 PM) index.php?act=findpost&pid=8290Thanks Buttermilk. Is that a/f ratio on the trx 5 run real? or was it an anomoly? There was definately a few more hp available judging from the trx 11 a/f curve.

Same thing i was thinking too.

 

[Buttermilk]

Yes, the AFR if for real on the TRX5 pipe. Several runs were made with the TRX5 pipe, and all exhibited that type of AFR.

Those runs were done with some pretty high port timings.

My latest setup has less port timing, but more power...

Also, those two runs were with a 180 main jet, same needle/clip, and same pilot. I later changed the main out for a 168 main for the TRX11 pipe and picked up a couple of hp.

 

[Buttermilk]

QUOTE (Buttermilk @ Aug 15 2008, 12:26 PM) index.php?act=findpost&pid=8292Yes, the AFR if for real on the TRX5 pipe. Several runs were made with the TRX5 pipe, and all exhibited that type of AFR.

Those runs were done with some pretty high port timings.

My latest setup has less port timing, but more power...

Also, those two runs were with a 180 main jet, same needle/clip, and same pilot. I later changed the main out for a 168 main for the TRX11 pipe and picked up a couple of hp.


Here's the TRX11 pipe with a main jet change from 180 to a 168 and some timing added to the CR ignition (I'd estimate ~5 degrees).

 

[REDLINE]

Very nice. Just ordered a trx 5 std. mount, this is an all around bike, so the guy wants to be able to throw the box back in for mud. Thanks for the info.