Tw6-6 install

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Jun 22, 2010 | 12:14 PM

#31

BlackFLHR

Road Master

Joined: Oct 2008

Posts: 880

Likes: 81

From: California

Quote:

Originally Posted by Sancho

I can't leave things alone so I changed the baffle from a concentric to the perforated wrapped. I took the bike back to The Dyno Difference for a re-tune and as it turned out I had a leak in my front exhaust header. Thanks to Ed from The Dyno Difference and Lloyd Stenerson from V Twin Solutions in Dallas the leak was fixed and I got the follwoing results. 88.5 HP and 98.9 TQ. Changing the baffle increased the TQ and fixing the exhaust leak eliminated the dips I originally had.

So maybe it wasn't the tune afterall. Perhaps the effects of the exhaust leak were just more pronounced with the PCV map.

BTW - how did they discover that you had a leak?

Jun 22, 2010 | 12:32 PM

#32

atrain68

Road Warrior

Joined: Mar 2007

Posts: 1,377

Likes: 8

From: Atlanta, GA

That looks much better Sancho. Great numbers. I bet the scoot rides great now!

Jun 22, 2010 | 12:42 PM

#33

fripple

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Joined: Feb 2006

Posts: 1,700

Likes: 0

From: down south

Awesome! Ed and Lloyd are both great guys and I'd highly recommend them to anyone that needs work! Did you see Lloyd's drag bike?

Jun 22, 2010 | 01:30 PM

#34

vtwinbmx

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Joined: Jul 2007

Posts: 1,289

Likes: 6

From: Mayfield Ohio

That looks more like it. I'm guessing the leak made the major change in the tune. Not the baffle.

Jun 22, 2010 | 01:56 PM

#35

Sancho

Thread Starter

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Joined: Oct 2009

Posts: 860

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From: Deep South Texas

Quote:

Originally Posted by bamorris2

So maybe it wasn't the tune afterall. Perhaps the effects of the exhaust leak were just more pronounced with the PCV map.

BTW - how did they discover that you had a leak?

Somehow Ed determined I had a leak on the front cylinder while it was on the dyno. Ed tried to determine what was leaking by spraying the intake, exhaust, head and also using a smoke stick. All of those tests showed no leak but the dyno said there was one because the bike was stumbeling when a load was put on it between 40-80% throttle setting only on the front cylinder. I think the exhaust gaskets were changed 2 or 3 times using differen't widths. Finally Lloyd got it stopped by going back to the stock width gaskets. The wrench that installed the cam had removed the exhaust and re-installed using the thin SE gaskets.
I'm glad I changed the baffle otherwise I would be riding the bike right now fat & dumb not knowing I had an exhaust leak and not getting the full performance. That leak was very small but big enough to cause a problem on the dyno.
Ed sent me a word document with dyno sheets explaining the whole deal but I can't get the dyno sheets to appear when I tried posting it. Anyone that would like to see that let me know and I'll email it to you.

Jun 22, 2010 | 02:59 PM

#36

BlackFLHR

Road Master

Joined: Oct 2008

Posts: 880

Likes: 81

From: California

Quote:

Originally Posted by Sancho

Ed sent me a word document with dyno sheets explaining the whole deal but I can't get the dyno sheets to appear when I tried posting it. Anyone that would like to see that let me know and I'll email it to you.

Feel free to email them to me at bamorris2 at gmail.com and I will convet and post them for you.

Jun 22, 2010 | 03:54 PM

#37

BlackFLHR

Road Master

Joined: Oct 2008

Posts: 880

Likes: 81

From: California

Here you go...

Jun 22, 2010 | 05:09 PM

#38

Garcou

Club Member

Joined: Mar 2010

Posts: 1,035

Likes: 0

From: Arlington, Washington

Congrats on getting that worked out Sancho! Those charts look great! Betcha she's a kick in the butt to ride now.

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Jun 22, 2010 | 05:25 PM

#39

fripple

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Joined: Feb 2006

Posts: 1,700

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From: down south

Ed is very thorough with his work and he takes pride in what he does. He won't send you on your way until you're happy. From the minute I pulled into his shop, he began to check everything to ensure that he'd get a good tune. Great guy!