'02 Hawk Baffle drilled
09-16-2007 | 09:09 AM
#1
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Squid
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'02 Hawk Baffle drilled
Finally got around to trying the partial bafflectomy. Drilled 8 21/64" holes in each baffle. Sounds incredibly better than stock. May do the full after a few weeks of riding - save $700+ on new pipes and jetting!!
Went back later and further enlarged 3 holes on each side to 1/2"....now sounds about right!!
Attached some pics - looks kinda cool - gatlin guns.
Went back later and further enlarged 3 holes on each side to 1/2"....now sounds about right!!
Attached some pics - looks kinda cool - gatlin guns.
Last edited by shelcon; 09-16-2007 at 01:22 PM.
09-16-2007 | 05:13 PM
#2
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SuperSport
Joined: Aug 2007
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From: Athens, GA
i have always been afraid to try any kind of bafflectomy or anything of the like. how did it effect power? do you have to adjust anything? i have a sgt. that used to work as a Duc mechanic and he told me to stay away from it, and just get new slip ons, because it will cause a loss of power. i am ignorant on this subject, can someone break it down for me?
09-16-2007 | 07:18 PM
#4
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Squid
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Still seems to pull hard as ever....seems to have better throttle response - likely its just now I can actually hear the bike.
I'm still playing around with it - actually drilled more 1/2" holes - sounding better and better.
I'm still playing around with it - actually drilled more 1/2" holes - sounding better and better.
09-16-2007 | 11:24 PM
#6
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MotoGP
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From: South Texas
The SuperHawk is "blessed" with heavy cans that respond great to a bafflectomy; nice deep bass and a sound level that is only depend on how many holes you drill or if you remove the inner baffle. I've done a couple of other stock bikes but the VTR easily sounds the best. Best money you never spent!!! LOL
Truly the only downside for street riders are the non-weight reduction you get with aftermarket pipes and the "bling" factor. Hardcore street or track riders will also note ground clearance issues.
Truly the only downside for street riders are the non-weight reduction you get with aftermarket pipes and the "bling" factor. Hardcore street or track riders will also note ground clearance issues.
09-17-2007 | 10:50 AM
#9
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SuperBike
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From: Richmond, Virginia
Drilling the holes definitely helps the sound a lot. Never did the whole bafflectomy thing.
I drilled mine on the bike (for stability), but then took the cans off & shook out all the metal shavings I could. Don't know if they could get sucked into the cylinders, but I didn't want to experiment!
If you want to really hear what the Super Hawk v-twin is all about, try running it for a minute w/o the cans! (Awesome, but unbearable!)
I drilled mine on the bike (for stability), but then took the cans off & shook out all the metal shavings I could. Don't know if they could get sucked into the cylinders, but I didn't want to experiment!
If you want to really hear what the Super Hawk v-twin is all about, try running it for a minute w/o the cans! (Awesome, but unbearable!)
Last edited by L8RGYZ; 09-17-2007 at 10:53 AM.
09-17-2007 | 06:33 PM
#10
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Superstock
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From: New Mexico
When I started it the first time w/ just 4 I thought "I'm glad I didn't do more"....but you get used to it pretty quick. I'm up to 8 per side now...might enlarge diameters to 3/8" each.
09-17-2007 | 10:31 PM
#12
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I got my hands on a second set of pipes. I took a hole saw to them,then used a dremal cut off tool.It wasn't big, just big enough to safely fit around that little stub without binding.Then stuck the dremal in side and went around.I then had too get the bike rejetted,because of backfiring/poping on deceleration.The rejetting is what brought the bike to life.I did that years ago when I was poor.I'll never do it again.The bike sounds great,and runs great,but I wish I had gone for the slipons for the weight loss.The stock ones are sooooo heavy.And last but not least its kind of embarasing....Duh Yup Done tuk a Saw to it.
09-17-2007 | 10:37 PM
#13
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SuperSport
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From: Athens, GA
I got my hands on a second set of pipes. I took a hole saw to them,then used a dremal cut off tool.It wasn't big, just big enough to safely fit around that little stub without binding.Then stuck the dremal in side and went around.I then had too get the bike rejetted,because of backfiring/poping on deceleration.The rejetting is what brought the bike to life.I did that years ago when I was poor.I'll never do it again.The bike sounds great,and runs great,but I wish I had gone for the slipons for the weight loss.The stock ones are sooooo heavy.And last but not least its kind of embarasing....Duh Yup Done tuk a Saw to it.
09-18-2007 | 04:51 AM
#14
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SuperSport
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From: Athens, GA
WOW! ok, i did it...what a difference. that **** sounds MEAN(er). i had to get over my whole "fear-of-totally-screwing-the-pooch-and-costing-myself-a-lot-of-unnecessary-money"
thing, but i sacked up and did the 8 holes with a 3/8" bit. holy crap that just made me grin ear to ear like a moron when i fired it up. im sure the neighbors appreciated it! i work night shift, so i pulled the bike in the house and did it (didnt want the drill waking up the neighbors). my fiancee got out of the shower to go to work...when she walked down the stairs she just looked at me, shook her head, kissed me on the cheek and left. ha! she didnt say a word. at least shes getting used to me., and now she just doesnt ask questions.
thing, but i sacked up and did the 8 holes with a 3/8" bit. holy crap that just made me grin ear to ear like a moron when i fired it up. im sure the neighbors appreciated it! i work night shift, so i pulled the bike in the house and did it (didnt want the drill waking up the neighbors). my fiancee got out of the shower to go to work...when she walked down the stairs she just looked at me, shook her head, kissed me on the cheek and left. ha! she didnt say a word. at least shes getting used to me., and now she just doesnt ask questions.
09-18-2007 | 08:16 AM
#15
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SuperBike
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From: Richmond, Virginia
Just remember... that s#!t won't cut it when you move the bike to the bedroom!
Last edited by L8RGYZ; 09-18-2007 at 08:18 AM.
09-19-2007 | 08:47 PM
#17
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From: Jacksonville, NC
Drilling the holes definitely helps the sound a lot. Never did the whole bafflectomy thing.
I drilled mine on the bike (for stability), but then took the cans off & shook out all the metal shavings I could. Don't know if they could get sucked into the cylinders, but I didn't want to experiment!
If you want to really hear what the Super Hawk v-twin is all about, try running it for a minute w/o the cans! (Awesome, but unbearable!)
I drilled mine on the bike (for stability), but then took the cans off & shook out all the metal shavings I could. Don't know if they could get sucked into the cylinders, but I didn't want to experiment!
If you want to really hear what the Super Hawk v-twin is all about, try running it for a minute w/o the cans! (Awesome, but unbearable!)
If you guys like the holes drilled, you should definitely just do the whole bafflectomey. I started with the holes, but it was a love/hate thing. It was alot better than stock, but at idle it sounded like it had a big exhaust leak. Pfft, pfft, pfft pfft... I said fawk it, and knocked the baffles out. That's when she came to life.
I have heard several other hawks with 2 brothers, jardines, etc etc exhaust and I can say this: Aftermarket pipes definitely sound a level up better, but it's not nearly the improvement as from stock to bafflectomy. If you aren't ricky racer, and trying to get as much weight loss and clearance as possible....it makes no sense to get aftermarket cans, other than the bling factor. The aftermarket pipes sound great, but not 6-$700 great.There is nothing quite like filling up your bike at a gas station with a large roof over it, and having a harley guy ride in, revving up his annoyingly loud, slow, illhandling bike about every 4 seconds. As you get ready to start the 'hawk, you hold the throttle alittle bit open - just enough to spike it up to 4-5,000RPM when it fires up. The looks from those guys will never cease to amaze me. Sorry buddy, no sewing machine engine in my bike.
09-19-2007 | 09:34 PM
#18
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Squid
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YUP - Agree - rode for a couple days with the 8 holes - great improvement over stock but not enough rumble/decibels!
Bought the hole saw today; full bflctmy tomorrow night. Cant wait to unlock the rest of that rumble!!
Bought the hole saw today; full bflctmy tomorrow night. Cant wait to unlock the rest of that rumble!!
09-20-2007 | 10:28 AM
#19
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From: sonoma county Ca.
Im poorer now than I was before and Im a ricky racer.Thats why I wish I had bought lighter cans back then. If you can brush your teeth you can do this.I left the pipes mounted for stability.Hole saw size was 1 5/8-11/16 don't remember.Holesaw first,try to center it.thats the brutal part,then dremal cut off tool around the inside center***I promise you,you'll need rejetted***
Before you do that, upgrade your air filter.Rarely is anything ever free
Before you do that, upgrade your air filter.Rarely is anything ever free
09-20-2007 | 10:39 AM
#20
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Superstock
Joined: Oct 2006
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From: Portland, OR
Im poorer now than I was before and Im a ricky racer.Thats why I wish I had bought lighter cans back then. If you can brush your teeth you can do this.I left the pipes mounted for stability.Hole saw size was 1 5/8-11/16 don't remember.Holesaw first,try to center it.thats the brutal part,then dremal cut off tool around the inside center***I promise you,you'll need rejetted***
Before you do that, upgrade your air filter.Rarely is anything ever free
Before you do that, upgrade your air filter.Rarely is anything ever free
So as opposed to drilling a few little holes around, you just made the exhaust tip one big hole, eh?
09-20-2007 | 11:32 AM
#21
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Yes I took out what I called the buttplug.There are three or four tubular baffles in there with the last one exiting out the pipe.Its welded to the face you holesaw.The one shelcon drilled through.Mine looks good,like a regular pipe,much better than the eight holes.And using my hillbilly science degree,it seems he's left the baffle attached and put holes in his exhaust,The largest hole is still baffled...The largest size hole saw is what ever fits into the tip.But that exposes all the crap in the pipe.................This pic is not me.fullsize hole with last baffle knocked off.My hole size is smaller, I think it looks better.Sorry no camera
Last edited by doggerman; 09-20-2007 at 12:19 PM.
09-20-2007 | 04:19 PM
#22
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Superstock
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From: Portland, OR
Yes I took out what I called the buttplug.There are three or four tubular baffles in there with the last one exiting out the pipe.Its welded to the face you holesaw.The one shelcon drilled through.Mine looks good,like a regular pipe,much better than the eight holes.And using my hillbilly science degree,it seems he's left the baffle attached and put holes in his exhaust,The largest hole is still baffled...The largest size hole saw is what ever fits into the tip.But that exposes all the crap in the pipe.................This pic is not me.fullsize hole with last baffle knocked off.My hole size is smaller, I think it looks better.Sorry no camera
09-20-2007 | 08:08 PM
#23
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From: sonoma county Ca.
Yes I guess. I took the tip off the last baffle. Inside cut is only maybe 3/4 inch past that face.Thats problaly as far as I could get the dremal in there.Pretty sure hole sze is 1 5/8.I did not remove the whole baffle,I didn't want too beat on it and have the insides start to rattle. It sounds good and looks good.No funny soundsTheres another hawk I ride with that has aftermarket pipes we sound similar.I also ride with RC51's,Aprilas,Ducatis,sv650's.(twins do make the best canyon carvers)We all sound different but alike.One guy of high caliber thought they were staintunes.Sorry shelcon,But do not do the little holes. If for no other reason than looks.I allso think air pressure through a small hole would make the sound we've all heard.If your going to F__K em up,my way worked out pretty good.Did I mention rejetting the money you save on pipes goes toward that,
09-21-2007 | 07:14 AM
#24
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Squid
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Did the "full" bafflectomy last night - removed the first baffle. Sounds much better than holes drilled. No one should be scared of doing the full - it doesnt seem that much louder than the 8 holes. Rode into work this morning and doesnt seem to need jetting based on those 16 miles....I've modified nothing else on the bike with regards to intake - i.e. air box/filter still stock. I've talked to people / read other posts where they also never found a need to re-jet as long as they kept everything else stock.
It does pop a little on decel after doing the full - but nothing more than the normal exhaust pop coming down from higher RPMs - backflow pop like you would hear on a hawg.
It does pop a little on decel after doing the full - but nothing more than the normal exhaust pop coming down from higher RPMs - backflow pop like you would hear on a hawg.
09-21-2007 | 10:17 AM
#25
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From: sonoma county Ca.
excelent shelcon.The rejetting may be dependent on where and how your riding.All I do any more is ride the canyons on the weekends.Up down left right.I got lucky maybe because mine is absolutly perfect,no pops ever.The hawk I ride with I think has D&D pipes.We'll come up over a rise in 4th 5th gear at 5000 6000 rpm and enter a down hill set of turns,You have to back off a little bit and every now and then I hear his bike poping.But not nearly the noise mine made.Anyways I go through 3 sets of metzlers a year,so the money spent on jetting 7 years ago was nothing,and it just runs so sweet.Skimp on the air filter if you want,You just saved 3 to 8 hundred bucks show her some love......And she'll luv ya back.
Last edited by doggerman; 09-21-2007 at 08:16 PM.
08-21-2008 | 05:17 PM
#29
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From: sonoma county Ca.
Wierd seeing that again.Are you saying it is too short to cut though the flat part.There are problay deep socket and shallow socket.the metal plate is not that thick,1/8"? and you have a dremel with a cut off blade?
08-21-2008 | 05:59 PM
#30
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No dremel.
All the hole saws at Lowes were the same depth. The one's I have at home (the Harbor Freight kit) are really shallow. The one from Lowes is just long enough to barely touch the inner flat part....not enough to cut.
I was expecting to do this:
Read in another post that a 2 1/8" bit from Ace Hardware will fit....I'm going to swing by on my way home.
All the hole saws at Lowes were the same depth. The one's I have at home (the Harbor Freight kit) are really shallow. The one from Lowes is just long enough to barely touch the inner flat part....not enough to cut.
I was expecting to do this:
Read in another post that a 2 1/8" bit from Ace Hardware will fit....I'm going to swing by on my way home.
Last edited by 01SuperChicken; 08-21-2008 at 06:00 PM. Reason: added pic
