Bafflectomy (or related)

[insider]

Yes, I know there are several threads regarding bafflectomy (some with explicit pictures) but I'm still puzzed (either that, or I'm retarded).

Got rid of my single Leo Vince exhaust (traded it for the two stock mufflers setup, since I've couldn't find the pair for Leo Vince)

ALthough before it was running on only one exhaust (leo vince sbk evo II right hand side) it was sounding much nicer than now.
Stock exhausts on VTR sound like CRAP. Besides the the fact that they're very silent, they sound like sh*t.It takes away all the v2 rumble & deep sound. (All I can hear is the whining of the engine).

Now, getting back to the subject: baffectomy.

I've attached below 2 pictures (picture 1 and picture 2). My questions are:
(picture1):
If I wanna get the exhaust to sound a bit louder/deeper, I should drill the so called holes in the designaded red spots,correct?
I presume I should drill the amount of holes correlated with the sound I want.
I'd go for 4 holes, 10mm in diameter. I'd say this would give a nicer sound (and should I want it louder, drill another one or enlarge the existing ones).

The pictures that I found on this forum,regarding to bafflectomy and the drilling of the holes, they refer to holes drilled in the metallic plate designated by me in picture 1, correct?

And for my information, after taking a look at picture 1 and picture 2, can you tell me whether that metallic plate (marked with yellow) is the same one in both pictures? And also,how it's mounted in the exhaust? is it welded in 3 spots?

Also, in picture 2, looking at item (1) and (2), can you tell me whether item (1) goes directly intro item (2) (and so, gas flows directly from item (1) to item (2)?

In picture 2, item (1) in the left is the same with item (1) in the right (the larger view) ?

By removing the 'baffle' do you refer to removing item (1) ?
And by completely removing the 'baffles' do you refer to stripping all the guts inside? item (1) and all the inside pipes/linkage?

Hopefully some patient enough users will respond to my questions:)

[yorkylancs]

Hi mate,back when i did mine,i put 4 8mm holes in them,sounded much beter,but then put another 4 in them for good measure,louder again.The pipe is spot welded in,and should come out with a good crack,but i would only do the partial bafflectomy(holes only),much better..

[steveb]

Am I being stupid or something but doesn't this cause you major 'can't pass the MOT' issues??

[geodude]

Am I being stupid or something but doesn't this cause you major 'can't pass the MOT' issues??

I bought a second set of OEM off ebay for this very reason. If it has any problems with the MOT i'll just pit the stock ones back on.

I have drilled 3 x 13mm holes in each. It sounds better but I want more

[insider]

First I've drilled about 6 holes into each end plate baffle...

Sounded better but still wasn't what I was going after.

then decided to remove the back plates & the small tube baffle.

all that remained inside each can are the interior baffles.

Now there is a very strange & disturbing thing happening.

Sometimes, after I ride with it, all of the sudden, the exhausts turn a bit more silent, and a sort of louder whine from the engine occurs.

It sounds like somewhat between with stock cans & with the cans drilled.

I've tried to analyze this to know whether if it occurs at a certain temperature reached by the engine or at a certain RPM range, but it just comes random.

Sometimes the bike sounds nice, deep, as it should,but after a while, other times, the pipes become 'STOCK' (from a sound point of view) and the engine noise is like some sort of an electric whine.

I really need to know why is this happening. I can see no difference as in power output when this occurs.

And I'm definitely sure that it has nothing to do with the pipes (since nothing is happening to them, while i'm riding, it's not like a have a valve in the pipes or anything).
I'm assuming it's something with the engine (not as in something wrong, but something is happening).

I've synchronised the carbs when I was having only one exhaust (the right one, leo vince).
After that I've mounted the stock exhausts, drilled them, then performed the bafflectomy.
So there was no carb synchronisation after installing the stock pipes or after bafflectomy.

Any input will be appreciated

[yorkylancs]

With regards the mot test,it is upto the discretion of the examiner to determine if he thinks your cans are excessively loud,the rules have been slackened a bit.This takes some of the onus off the tester,but you would still be in bother off the law,if they noise test you.Mot testers arent thick,race cans get put back on when you get home.Mine have no markings on them,or baffles,my tester as said this is ok,but v twins are a different kind of loud,just use common sense,if you turn up with stubbies expect to get told to eff off....

[tony.mon]

Anyway, swapping over to standard cans at MOT time gives you the chance to clean round the swingarm area properly at least once a year!

And I dunno about anyone else, but I really notice the extra vibration through the pegs with the std ones on.

And damaged/scraped originals are cheap!

[IgorVigor]

The only 2 things I can think are:

1 - The internal baffles are moving around a bit, but I would think you would get a rattle from them...

2 - You have a leak in the exhaust somewhere that closes up sometimes...


Just an idea :S