Airbox Mod - DL1 & DL6 - Why not? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 20 Old 03-30-2010, 01:36 PM Thread Starter
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Airbox Mod - DL1 & DL6 - With Pictures

I've read nothing about riders altering the airbox on a Strom and I'm curious why. I bought K&Ns for our bikes and tore them down for the install. When I had them apart I noticed that the snorkel on the DL6 was punie! It reminded me of one off of a DR. So I moded it. The same goes for my DL1.

I guess my question is, why not mod the airbox? I realize that the sound level is increased, but not radically so. We have ATREs installed so the bikes shouldn't run any leaner than they were with open snorkels.

Photos are here:

Snorkels: DL1 on top - DL6 on bottom



Open Airbox



Screen: removed from the back of a stock DL air cleaner



Screen cut to fit



Screen in place: Bolted w/ 10x32 screws, with 2 washers and a 10x32 nut as a stand-off. Nut to the outside w/ lock washer, just in case it were to vibrate off.







When I took the airboxes apart I was amazed at what I found inside. There was a complete dragonfly in mine! I feel that the way I have these designed the airbox will be better protected while at the same time completely free of restriction.

Performance is definately enhanced...although it could be accounted for by the ATRE. When we took off for our last ride I lifted the front wheel without meaning to. And wide open throttle at highway speed is beautiful.

Now: Arguments against? Anyone? I'd appreciate your input.

Jim

Wife's '09 DL-650: OEM hand guards - DL-1000 lower cowel - 16t counter sprocket - Givi windscreen - Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system.

My '09 DL-1000: Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system - Givi windscreen.

Last edited by Quehele; 03-30-2010 at 03:30 PM. Reason: Spelling
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post #2 of 20 Old 03-30-2010, 04:34 PM
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Why didn't you attach the screen directly to the box with self-tapping screws?
Or even glue it on with ATV silicone around the perimeter? It seems like the gap around the edge could still admit some buggeroos.

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post #3 of 20 Old 03-30-2010, 04:42 PM Thread Starter
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True the gap will allow some things to pass by but I didn't want to take a chance of the screen getting clogged and cutting off the air flow. So long as the big things stay out I think it serves its purpose.

Also, I thought Tek screws might back off under vibration. I used lock washers all the way around.

Quote:
Originally Posted by MikeB View Post
Why didn't you attach the screen directly to the box with self-tapping screws?
Or even glue it on with ATV silicone around the perimeter? It seems like the gap around the edge could still admit some buggeroos.

Wife's '09 DL-650: OEM hand guards - DL-1000 lower cowel - 16t counter sprocket - Givi windscreen - Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system.

My '09 DL-1000: Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system - Givi windscreen.
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post #4 of 20 Old 03-30-2010, 06:12 PM
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I'm curious about the sound level...when I've opened up the air box on thumpers, I notice that the sound increases as much or more than the the performance. Those snorkels are essentially acoustically tuned to reduce noise, like the th muffler on the other end.

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post #5 of 20 Old 03-30-2010, 06:28 PM
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Taking off the inlet will let more are in but the engine needs a way to draw in clean cool air to make more HP.

It's kind of strange, how the mountains pay us no attention at ll. You laugh or cry and the wind just keeps on blowing.

Flint Gray 2002 DL1000
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post #6 of 20 Old 03-30-2010, 07:15 PM Thread Starter
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When you open it up at speed you can definately hear it. But it's not like a thumper. We have two DRs and I've tried the open box idea on them. The sound's totally different.

Quote:
Originally Posted by Malikenya View Post
I'm curious about the sound level...when I've opened up the air box on thumpers, I notice that the sound increases as much or more than the the performance. Those snorkels are essentially acoustically tuned to reduce noise, like the th muffler on the other end.

Wife's '09 DL-650: OEM hand guards - DL-1000 lower cowel - 16t counter sprocket - Givi windscreen - Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system.

My '09 DL-1000: Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system - Givi windscreen.
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post #7 of 20 Old 03-30-2010, 07:22 PM Thread Starter
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The intake air path is the same. The major difference is the path of the air as it enters the airbox. Rather than being funneled by the intake nozzle the air is free to move.

The path isn't exactly "cold air induction" as in an Olds 442 but it is (relatively) cold clean air.


Quote:
Originally Posted by T3/T4 Hybrid View Post
Taking off the inlet will let more are in but the engine needs a way to draw in clean cool air to make more HP.

Wife's '09 DL-650: OEM hand guards - DL-1000 lower cowel - 16t counter sprocket - Givi windscreen - Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system.

My '09 DL-1000: Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system - Givi windscreen.
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post #8 of 20 Old 03-30-2010, 07:45 PM
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Quote:
Originally Posted by Quehele View Post
The intake air path is the same. The major difference is the path of the air as it enters the airbox. Rather than being funneled by the intake nozzle the air is free to move.

The path isn't exactly "cold air induction" as in an Olds 442 but it is (relatively) cold clean air.
So just wondering does it help make more HP or just noise?

It's kind of strange, how the mountains pay us no attention at ll. You laugh or cry and the wind just keeps on blowing.

Flint Gray 2002 DL1000
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post #9 of 20 Old 03-30-2010, 07:45 PM
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Removing the snorkle may give you more air but it often gives you more turbulence as well. This is not good.

If you take off the snorkle from a DR650 airbox (with no other mods) then you will get a slight increase in noise and a 8% reduction in fuel economy.
What did you measure on the DL ?

PS
I always find that going down one tooth on the front sprocket is a better way to get more performance (acceleration) usually without a loss of fuel economy.
Losing 20 pounds also works well
.

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post #10 of 20 Old 03-30-2010, 08:29 PM Thread Starter
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Turbulence: Possible but not probable. The snorkle had to "draw" air from the clold air ramp. The open box simply draws it in.

Mileage: We didn't check it on the DL6, only on the DL1 (mine). I'm still somewhere in the 42 mpg range. Keep in mind though...we added ATREs to both bikes and spent several hours in the twisties on Hwy 33.

Going down one counter shaft sprocket tooth: I just went up to a 16t on the DL6 to better handle speeds above 70 mph. We use our bikes for touring & twisties.

Drop 20 pounds to increase horsepower: I'll make you a deal. You explain to my wife that if she drops 20 pounds her bike will have better power...and I'll watch. =)~

This is my wife out in Mojave back in January:



This is her in Bodie last June.



Thanks for the help. It is appreciated.

Quote:
Originally Posted by BurnieM View Post
Removing the snorkle may give you more air but it often gives you more turbulence as well. This is not good.

If you take off the snorkle from a DR650 airbox (with no other mods) then you will get a slight increase in noise and a 8% reduction in fuel economy.
What did you measure on the DL ?

PS
I always find that going down one tooth on the front sprocket is a better way to get more performance (acceleration) usually without a loss of fuel economy.
Losing 20 pounds also works well
.

Wife's '09 DL-650: OEM hand guards - DL-1000 lower cowel - 16t counter sprocket - Givi windscreen - Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system.

My '09 DL-1000: Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system - Givi windscreen.
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