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Old 01-27-2013, 10:05 AM   #2641
SAPB
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Quote:
Originally Posted by gnath9 View Post
Looking good !!!

How loud is that Big Gun ?
I just ordered the the stage one kit from BDSB's with the megabomb and Q4 I just hope it is not too loud
BDSB just lowered their prices and it was cheaper than the CRF's Only kit.
And we all KNOW you started it with no muffler. How much quieter than no muffler is the Big Gun?
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Old 01-27-2013, 10:08 AM   #2642
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Originally Posted by SAPB View Post
And we all KNOW you started it with no muffler. How much quieter than no muffler is the Big Gun?
lol ... yes we do !!!
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Old 01-27-2013, 10:27 AM   #2643
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Looking at this, it seems the spark arrester (#7 on this) is $63. The lower part is just the spark arrester screen, which slips off (not sure which post showed this). So, I think Ed@Ford posted he modified the muffler on his XR400. It seems a cheap mod would be to get the SA out, and enlarge the holes (which you can't see in this schematic) to make it a bit more free flowing, and a little louder, way less $ than any aftermarket muffler, while still retaining the cat. Point being if you went a little at a time, enlarging the holes, and got too far, easy enough to put it back the way it was. Some of these DB ratings I'm reading about are just way to obnoxious, just my 2. Will the ECU "relearn" the mod?

http://www.hondapartsnation.com/oemp...be2131/muffler
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Old 01-27-2013, 11:39 AM   #2644
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its pretty loud compared to stock. The bike is way louder with no exhaust :)
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Old 01-27-2013, 02:22 PM   #2645
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Looking good. Btw I have a big gun full Evo R system on the way, will post sound clips once it's installed and my EJK comes.
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Old 01-27-2013, 03:50 PM   #2646
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Fat Bars

I realize this is a personal preference type question but ... I would like to hear what people like.
I am leaning towards the woods low bend because I also have the Rox pivoting 2 inch risers coming.
these are the pro taper bars I have to choose from.

CR High Bend
CR Mid Bend
Carmichael Bend
KX High Bend
Henry/Reed Bend
Pastrana FMX Bend
Windham Mid Bend
Woods High Bend
Woods Low Bend
YZ High Bend
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Old 01-27-2013, 04:06 PM   #2647
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Quote:
Originally Posted by gnath9 View Post
I realize this is a personal preference type question but ... I would like to hear what people like.
I am leaning towards the woods low bend because I also have the Rox pivoting 2 inch risers coming.
these are the pro taper bars I have to choose from.

CR High Bend
CR Mid Bend
Carmichael Bend
KX High Bend
Henry/Reed Bend
Pastrana FMX Bend
Windham Mid Bend
Woods High Bend
Woods Low Bend
YZ High Bend
I have the CR High on 2" Rox Risers ...... it's ok for 'attack position', but when casually riding in a standing position they're a little low. I'm 5' 9" but that's not the relevant measurement ... problem is, I can't remember the sleeve length on my dress shirts.
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Old 01-27-2013, 04:25 PM   #2648
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Quote:
Originally Posted by SAPB View Post
Looking at this, it seems the spark arrester (#7 on this) is $63. The lower part is just the spark arrester screen, which slips off (not sure which post showed this). So, I think Ed@Ford posted he modified the muffler on his XR400. It seems a cheap mod would be to get the SA out, and enlarge the holes (which you can't see in this schematic) to make it a bit more free flowing, and a little louder, way less $ than any aftermarket muffler, while still retaining the cat. Point being if you went a little at a time, enlarging the holes, and got too far, easy enough to put it back the way it was. Some of these DB ratings I'm reading about are just way to obnoxious, just my 2. Will the ECU "relearn" the mod?

http://www.hondapartsnation.com/oemp...be2131/muffler
Yes, compared to this CRF spark arrestor, the "windows" that are covered with screen in the XR400R spark arrestor are HUGE by comparison. BUT, there is also a snuffer in the end of the XR400 spark arrestor that keeps the noise down to 86dB..I think. If you take that snuffer out, it is VERY noisy...way over he 96dB allowed in offroad events now by AMA. I created a snuffer with much less restriction similar to the ones created way back then by XR's only. By comparison, the CRF has fairly small windows...but no snuffer. My thought is to take a stock CRF spark arrestor, or a reasonable copy, and hog out bigger windows, add screen, and get to a reasonable sound level, with a reasonable power increase. I am personally not interested in spending $700 to remove 7 pounds, and end up with a nasty loud muffler...and yes....anything over 90dB is LOUD in my book...but the stock CRF is 80dB....is similarly over kill in the opposite direction. I have a sound meter, and plan on taking some dimensions off the stock XR400 "windows" and the CFR "windows" over the next couple weeks.
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Old 01-27-2013, 04:27 PM   #2649
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Quote:
Originally Posted by 'Flagger View Post
I have the CR High on 2" Rox Risers ...... it's ok for 'attack position', but when casually riding in a standing position they're a little low. I'm 5' 9" but that's not the relevant measurement ... problem is, I can't remember the sleeve length on my dress shirts.
what about cables, did you have plenty of room ?
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Old 01-27-2013, 04:33 PM   #2650
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Originally Posted by gnath9 View Post
what about cables, did you have plenty of room ?
Rerouted the clutch cable ... don't remember exactly how. Rotated the throttle assembly on the handlebar to point the cables down instead of up.
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Old 01-27-2013, 05:16 PM   #2651
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Quote:
Originally Posted by Ed@Ford View Post
Yes, compared to this CRF spark arrestor, the "windows" that are covered with screen in the XR400R spark arrestor are HUGE by comparison. BUT, there is also a snuffer in the end of the XR400 spark arrestor that keeps the noise down to 86dB..I think. If you take that snuffer out, it is VERY noisy...way over he 96dB allowed in offroad events now by AMA. I created a snuffer with much less restriction similar to the ones created way back then by XR's only. By comparison, the CRF has fairly small windows...but no snuffer. My thought is to take a stock CRF spark arrestor, or a reasonable copy, and hog out bigger windows, add screen, and get to a reasonable sound level, with a reasonable power increase. I am personally not interested in spending $700 to remove 7 pounds, and end up with a nasty loud muffler...and yes....anything over 90dB is LOUD in my book...but the stock CRF is 80dB....is similarly over kill in the opposite direction. I have a sound meter, and plan on taking some dimensions off the stock XR400 "windows" and the CFR "windows" over the next couple weeks.
80 dB, had no idea, seems pretty quiet, even by comparing to bikes I've had recently. I think some have said that this computer controlled system is way more sophisticated than ones in the past, mostly to keep the "backyard mechanic", out of the loop. Haven't heard from Ramz lately, I think he stated something like, you won't believe what information we can get out of this. Not quoting, but here on this thread, quite early on, he stated something similar. Others have noted that changing anything is a no no on current laws, nobody getting hung around here just lately, though, the pirates are taking mufflers off for the first mod. Oh crap, pirates, and KTM bashing, I though this was a CRF forum
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CRF250L Service Manual http://www.hondampe.com.au/docs/owni...F250L13_OM.pdf
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Old 01-27-2013, 05:20 PM   #2652
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CRF 250l Mods

New to the dual sport world. I'm trying to make my CRF faster off the line. How can I make this happen? Is "The Best Dual Sport" stage 1 kit worth the money? Please send me a private message and let me know.
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Old 01-27-2013, 05:25 PM   #2653
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Quote:
Originally Posted by SAPB View Post
80 dB, had no idea, seems pretty quiet, even by comparing to bikes I've had recently. I think some have said that this computer controlled system is way more sophisticated than ones in the past, mostly to keep the "backyard mechanic", out of the loop. Haven't heard from Ramz lately, I think he stated something like, you won't believe what information we can get out of this. Not quoting, but here on this thread, quite early on, he stated something similar. Others have noted that changing anything is a no no on current laws, nobody getting hung around here just lately, though, the pirates are taking mufflers off for the first mod. Oh crap, pirates, and KTM bashing, I though this was a CRF forum
Ramz appears to have abandoned us .... hasn't posted in this thread since mid-December. That's a shame ... all input is welcome.
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'Flagger screwed with this post 01-27-2013 at 05:42 PM
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Old 01-27-2013, 05:50 PM   #2654
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Quote:
Originally Posted by Bake View Post
The Bill Blue 280 big bore engine was up and running today. He said he completed the design for the second size engine. Bill's contacts in the business go pretty deep, if he pulls the trigger on these 2 big bore kits, it will happen relatively quickly. It's still his secret what size the bigger engine is, but I think it's about 320cc.
I got my Dobeck fuel controller today and will install it on my bike this weekend. Bill should have the new exhaust tips done soon. I will be testing one of those while he breaks in the 280. He says the cooling capacity can handle a 350, but there just isn't room to go that big.
It's been a while since we heard anything about this ... unless I missed it?

Looks like our missing owner has ordered and received the smaller of the two kits mentioned above. Maybe we can convince him to come back and provide some insight.
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Old 01-27-2013, 05:56 PM   #2655
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There was some previous discussion on it being a no-no to adjust the "sealed" throttle stop on the throttle body. I asked the stupid question of whether there is an adjuster on the throttle cable by the RH grip. Well, I looked at the bike show yes...there is one on the CRF. Here's an experiment for someone who has a CRF in a warm area that likes to stall when the throttle is allowed to slam shut and the bike rolls to a stop. Fiddle with the adjuster on the cable to the point where the idle is slightly elevated....go out and see if the bike still stalls. If it no longer stalls, then "idle speed setting" via the throttle stop is a fix of sorts. But I think thoroughly studying the service manual is essential. Mine's on order...when it arrives? Who knows!
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