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#1 |
Join Date: Apr 2016
Location: North Utah
Posts: 37
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Update on all mods done on the hawk. Questions about baffles?
Here is a list of all mods done on my hawk 250,
1st change oil and chain after buying. I went with a D.I.D 428 130 chain. 2nd change sprockets from 15-50 to 17-45, this made probably the best difference in top speed. 3rd re jet carb 4th modify air box intake, noticed hardly anything with this mod. Maybe more noise but couldn’t be sure. 5th Swap speedometer or just use trc app for smart phones did both. I think the app works better. 6th change spark plug to ngk (2202) DPR8EIX-9 Iridium 7th swapped my rear sliders to washers and bolts, chain seems to rub on the factory ones. (This could be an assembly problem) 8th swap chain guide. 9th visual mods. Used acetone to remove all “hawk” stickers and paint replaced with my own stickers 10th bought but haven’t installed rack and box. 11th in the process of tracking down black panels. If you know of where I could buy from? Beginning top speed 50ish not sure where my rpms were but they were screaming. Ending top speed 64mph seems to coast comfortably around 55 with no screaming. Now my next task is modifying the exhaust. I was curious about replacing? Or has anyone messed around with removing the baffle or drilling holes? And if so what kind of sound/performance increase did you notice? |
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#2 |
Join Date: Jan 2016
Location: Mooresville NC
Posts: 2,085
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I did the cheap route by doing a baffectomy with a long piece of rebar. ground a point on it, slid into the end of the end of the exhaust, gave it a few good wacks with a sledge.minimal performance or noise changes.
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#3 |
Join Date: Apr 2016
Location: North Utah
Posts: 37
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Is this a real thing people do?
yeah, im not doing that. Never even heard of someone doing so.
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#4 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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Thanks for report. You may find a replacement header pipe without the catalytic converter 4 cheap. I think the one for the bashan storm was $10-15 or so. Grind out the inner welds and make it smooth flowing. Get a performance exhaust to drop weight etc such as
http://www.amazon.com/FMF-Universal-...estor+silencer These and all "performance" improvements need to be taken with a grain of salt. In other words, overall improvements vs costs , are marginal but still helpful. Probably the best upgrade is to go on a diet and for some of us lose about 20 lbs, talk about performance improvements!
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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#5 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Take the baffle out and see if you notice a difference. If you ride in USFS lands, put it back in for those occasions. The rangers take a coat hanger and shove it into your pipe. It better stop or it's a ticket.
__________________
"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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#6 | |
Join Date: Apr 2016
Location: North Utah
Posts: 37
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Quote:
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#7 |
Join Date: Apr 2016
Location: North Utah
Posts: 37
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That's the plan for Thursday I'll report back and see if I notice any. If not maybe it's worth the replacement of the exhaust.
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#8 | |
Join Date: Jan 2016
Location: Mooresville NC
Posts: 2,085
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Quote:
On the hawk it probably doesn't help all that much because of the in-line cat converter further up in the exhaust. I saw someone cut that open, gut it, and weld back in place. that would be a better solution other than a new pipe system without the cat and put a forest service approved spark arresting muffler on. |
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#9 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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Something like this
http://www.harborfreight.com/diamond...-pc-69657.html To go after the cat and baffle. This was previously posted by... ![]()
__________________
***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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#10 |
Join Date: Dec 2015
Location: CO
Posts: 1,525
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Common to do on KLR 650 too "get rid of the VW Tweet" sound...
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"Think as you like... but this self proclaimed Professor is always right" - Buckshot ![]() "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P. |
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#11 |
Join Date: Apr 2016
Location: North Utah
Posts: 37
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Well there you go. never seen that before. cool, still dont know if i would want to do that though. Thanks guys.
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#12 |
Join Date: May 2016
Posts: 583
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so much for the spark arrester.
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#13 |
Join Date: Mar 2016
Location: Tuscaloosa Al.
Posts: 433
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the hawk muffler has screws that can let you take the baffle out without ruining it. the cat on the other hand is a PITA.
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Wingless Hawk, 2016 orange RX3, 97 wide glide,2003 KLR |
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#14 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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I'd either remove the cat (if you have access to a welder) or replace the header with the non-cat version, per BlackBike's recommendation. Once the cat is gone, you can re-jet to compensate, and see if there's a benefit. After that, you can decide if you want a new muffler.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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#15 | |
Join Date: Apr 2016
Location: North Utah
Posts: 37
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Quote:
First, going to do the simplistic solution and remove baffle. Test, if it's not satisfying I'm going to run the bike at least another few hundred miles before messing with the cat or thinking about replacing. Thanks for the advice. |
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Tags |
baffle, enduro, hawk, mods |
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