Arrow 3-1 removing the baffle - Triumph675.Net Forums
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post #1 of 13 Old 10-11-09, 01:26 Thread Starter
alphamang
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Arrow 3-1 removing the baffle

I know this has been covered numerous amounts of time before, and I know I've seen a post on what I'm asking.. but I just can't seem to find it!

I remember someone has posted here or on RAT that the 3-1 had a removable baffle that didn't require actually doing any major cutting/welding. If anyone knows what I'm talking about and can link me I would to you.
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post #2 of 13 Old 10-11-09, 13:53
p-smith
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dont think the 3-1 has a baffle, its not a legal pipe in the uk its just for track use i was told but it still went on, lol
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post #3 of 13 Old 10-11-09, 15:18
r00t
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...And is it possible to put a second baffle on a 3->1 ?? ;-)
That would be an option of interest for me...
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post #4 of 13 Old 10-12-09, 01:16
MacBandit
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Google is yer frienndd!!

[ame="http://www.triumph675.net/forum/showthread.php?t=27553"]How-to, make Arrow 3-1 removable db-killer (update) - Triumph675.Net Forums[/ame]
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post #5 of 13 Old 10-12-09, 18:41
antiplastix
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I cant understand why you would want to do this ? Engineers at Arrow spent hours designing this pipe to provide maximum torque and power. Removing the baffle may slightly increase the power at maximum revs but will rob the mid-range of useable torque where you normaly ride.

09 Street Triple, Arrow 3>1, DNA filter, PC III, SAI blocked off, no 02 sensor, Gel seat, Tailpack, crash bungs, hugger, flyscreen..etc.etc.
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post #6 of 13 Old 10-12-09, 22:29
MacBandit
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Actually all the dyno print outs I've seen showing before and after show and increase in both HP and Torque when opening up the pipes on the 675 motor. Yes peak torque may move to a higher RPM but even at the prior peak RPM there is still more torque then before.
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post #7 of 13 Old 10-15-09, 16:59
antiplastix
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Quote:
Originally Posted by MacBandit View Post
Actually all the dyno print outs I've seen showing before and after show and increase in both HP and Torque when opening up the pipes on the 675 motor. Yes peak torque may move to a higher RPM but even at the prior peak RPM there is still more torque then before.
Yes but are you talking about fitting a aftermarket pipe or fitting a aftermarket pipe then removing all back pressure ?

09 Street Triple, Arrow 3>1, DNA filter, PC III, SAI blocked off, no 02 sensor, Gel seat, Tailpack, crash bungs, hugger, flyscreen..etc.etc.
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post #8 of 13 Old 10-15-09, 19:33
MacBandit
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There is very little difference in either method. Back pressure is back pressure whether it is attained by twisting and turning the pipe or by putting restrictions in the flow of the exhaust. A good example of this is the GSXR modded muffler which is straight through with only about 6 inches of muffler. Even with the GSXR mod you still develop more torque and horsepower. The 675 just wants to breath more so than most bikes I've seen.
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post #9 of 13 Old 10-15-09, 23:12
dub
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My zard has a removable db killer and I notice little, if any, difference in low and mid range power with the it in or out. Just a bunch louder w/o and and it seems to rev a little more free up top.

My guess is Arrow put in some sort of db killer to make it factory aftermarket sales friendly and still with the option to uncork it if you were so inclined.

Eurotrashed!
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post #10 of 13 Old 10-16-09, 16:56
antiplastix
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I ll settle for the baffle in, here in NSW, Australia you if get 3 noise complaints against you its a $22,000 fine and I cant really see 2 hp worth that.

09 Street Triple, Arrow 3>1, DNA filter, PC III, SAI blocked off, no 02 sensor, Gel seat, Tailpack, crash bungs, hugger, flyscreen..etc.etc.
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