Suzuki GR650 - back to work...
- Thread starter Big R
- Start date
Big R
Heaven is so far away.
Re: Suzuki GR650- change is in the airBOX.......
Wow, thanks for the responses fellas. I was expecting the "airbox does not equal cafe" comment from somebody, but not the guy running NOS in a modern cafe!
Kwazy: While I never got the original BS36's tuned properly, I did get them running on the rich side. After that, I was having too much fun riding the thing! Now I have some VM34's so I have to start all over though........
Tyler & Kiley: I thought about using some type of clear plastic on the sides but decided against it for the reasons mentioned. I'll smooth out the plastic "welds" and paint the box so it's one color, and might even look into polishing some aluminum panels that bolt up on the sides. That would give it a mirrored appearance if nothing else. As far as the v-stacks go, the stock GS500 box has them at the carb mounts (just like the CB400F). But that box mounts directly to the carbs, and I have to use the stock GR rubber tubes to clear the frame. There is however a bell shaped opening on the air filter.
Speaking of the filter - at first I was concerned about the physical size (and flow) of using a filter from a smaller bike. But a guy on the GSTwins forum posted a pic of a GSX1400 filter: it is exactly the same as a GS500 filter except it is about 1/2" longer. Seems like a pretty safe bet to me.....
And Chris: DO IT!! Except we have higher expectations from you.......so instead of shoddy plastic welding, you'll have to use CF and kevlar.
Wow, thanks for the responses fellas. I was expecting the "airbox does not equal cafe" comment from somebody, but not the guy running NOS in a modern cafe!
Kwazy: While I never got the original BS36's tuned properly, I did get them running on the rich side. After that, I was having too much fun riding the thing! Now I have some VM34's so I have to start all over though........
Tyler & Kiley: I thought about using some type of clear plastic on the sides but decided against it for the reasons mentioned. I'll smooth out the plastic "welds" and paint the box so it's one color, and might even look into polishing some aluminum panels that bolt up on the sides. That would give it a mirrored appearance if nothing else. As far as the v-stacks go, the stock GS500 box has them at the carb mounts (just like the CB400F). But that box mounts directly to the carbs, and I have to use the stock GR rubber tubes to clear the frame. There is however a bell shaped opening on the air filter.
Speaking of the filter - at first I was concerned about the physical size (and flow) of using a filter from a smaller bike. But a guy on the GSTwins forum posted a pic of a GSX1400 filter: it is exactly the same as a GS500 filter except it is about 1/2" longer. Seems like a pretty safe bet to me.....
And Chris: DO IT!! Except we have higher expectations from you.......so instead of shoddy plastic welding, you'll have to use CF and kevlar.
peteGSX
Zuk's Rock!
Re: Suzuki GR650- change is in the airBOX.......
Sounds like you've done your research Rich, nice!
The alternative to the alu. side panels of course is the plastic chrome paint, but I think real alu. would be a much nicer finish and being alu. won't add weight.
Have you done any calculations to determine the volume or is that being dictated by the space available? Very interested to see how this turns out
Sounds like you've done your research Rich, nice!
The alternative to the alu. side panels of course is the plastic chrome paint, but I think real alu. would be a much nicer finish and being alu. won't add weight.
Have you done any calculations to determine the volume or is that being dictated by the space available? Very interested to see how this turns out
ben2go
Two Wheel Projectile
Re: Suzuki GR650- change is in the airBOX.......
Hey Rich.I think your idea is great.On my GS500, with the lunch box airfilter,I have running issues in strong cross winds.At speed with cross winds, I get a slight surging that becomes un-nerving at first, and then just annoying.At idle with a strong cross wind,my bike will shut off.I only have this problem with cross winds above 40mph blowing left to right.Right to left, the petcock breaks up some of the wind,so I only get a shitty idle.I normally don't ride in high winds.Sometimes I get stuck in the city, and the wind blowing between the buildings picks up speed, kind of like a venturi effect.I try to stay out of downtown but I have bills to pay.
Hey Rich.I think your idea is great.On my GS500, with the lunch box airfilter,I have running issues in strong cross winds.At speed with cross winds, I get a slight surging that becomes un-nerving at first, and then just annoying.At idle with a strong cross wind,my bike will shut off.I only have this problem with cross winds above 40mph blowing left to right.Right to left, the petcock breaks up some of the wind,so I only get a shitty idle.I normally don't ride in high winds.Sometimes I get stuck in the city, and the wind blowing between the buildings picks up speed, kind of like a venturi effect.I try to stay out of downtown but I have bills to pay.
john83
Over 1,000 Posts
Re: Suzuki GR650- change is in the airBOX.......
I have read that an airbox provides the carbs with a plenum of neutral air to draw from. This means that mixture settings will not be effected by how fast you go, which way the air filters are pointing or which way the wind blows. Makes carb tuning much easier and also does a much better job of keeping small debris out of the engine.
I have read that an airbox provides the carbs with a plenum of neutral air to draw from. This means that mixture settings will not be effected by how fast you go, which way the air filters are pointing or which way the wind blows. Makes carb tuning much easier and also does a much better job of keeping small debris out of the engine.
Big R
Heaven is so far away.
Re: Suzuki GR650- change is in the airBOX.......
Pete: unfortunately I can't do any accurate measuring until this airbox is capable of holding water. I can compare it's volume against the stock airbox (luckily I happen to have an extra GR or two around!)
Ben: I personally have never had a problem with wind, but I have heard of it many times. For me, I hated riding the bike to work at night and leaving it outside. Any overnight rain or morning dew would have me worried about the lunchbox getting soaked........
Pete: unfortunately I can't do any accurate measuring until this airbox is capable of holding water. I can compare it's volume against the stock airbox (luckily I happen to have an extra GR or two around!
)Ben: I personally have never had a problem with wind, but I have heard of it many times. For me, I hated riding the bike to work at night and leaving it outside. Any overnight rain or morning dew would have me worried about the lunchbox getting soaked........
CresentSon
Over 1,000 Posts
Re: Suzuki GR650- change is in the airBOX.......
F'ing brilliant. If I had one of those, I'd have something else to tack shit to!
F'ing brilliant. If I had one of those, I'd have something else to tack shit to!
Big R
Heaven is so far away.
Re: Suzuki GR650- change is in the airBOX.......
Ha! Can't deny that one.......
It took quite a while - between cutting the plastic, shaping it to fit (flapper wheel in the drill press), checking fitment in the frame, etc. Matter of fact, I'm still leak testing and sealing tonight at work. Had I gone with a more "square" box, it wouldn't take long at all though. I want to guess there are about 20 individual pieces of plastic and probably 8-10 hours overall.
Ha! Can't deny that one.......
It took quite a while - between cutting the plastic, shaping it to fit (flapper wheel in the drill press), checking fitment in the frame, etc. Matter of fact, I'm still leak testing and sealing tonight at work. Had I gone with a more "square" box, it wouldn't take long at all though. I want to guess there are about 20 individual pieces of plastic and probably 8-10 hours overall.
peteGSX
Zuk's Rock!
Re: Suzuki GR650- change is in the airBOX.......
Definitely keen to see how she turns out Rich! I must confess half the reason I went to pods was purely because I didn't fancy fighting the stock airbox back in the cramped space... the other half is I seemed to recall it going in and out via the left side of the frame, which meant getting the exhaust off every time... I don't wanna disturb that exhaust
Christmas morning here... so Merry Christmas!
Definitely keen to see how she turns out Rich! I must confess half the reason I went to pods was purely because I didn't fancy fighting the stock airbox back in the cramped space... the other half is I seemed to recall it going in and out via the left side of the frame, which meant getting the exhaust off every time... I don't wanna disturb that exhaust
Christmas morning here... so Merry Christmas!
Big R
Heaven is so far away.
Re: Suzuki GR650- change is in the airBOX.......
I can understand that - the stock box required unbolting the battery tray, tool tray, etc. Sometimes I think they put the airbox in first, then build a frame around it.
And right back at ya buddy! Hopefully you get less coal than me.........
I can understand that - the stock box required unbolting the battery tray, tool tray, etc. Sometimes I think they put the airbox in first, then build a frame around it.
And right back at ya buddy! Hopefully you get less coal than me.........
ben2go
Two Wheel Projectile
Re: Suzuki GR650- change is in the airBOX.......
I was caught in a down pour, on the BPR soon after I installed my lunch box filter.When I made it the 40 miles to shelter,I checked it out.It was dry and the engine never missed a beat.Luckily the wind wasn't blowing. ;D
Big Rich said:Pete: unfortunately I can't do any accurate measuring until this airbox is capable of holding water. I can compare it's volume against the stock airbox (luckily I happen to have an extra GR or two around!
Ben: I personally have never had a problem with wind, but I have heard of it many times. For me, I hated riding the bike to work at night and leaving it outside. Any overnight rain or morning dew would have me worried about the lunchbox getting soaked........
I was caught in a down pour, on the BPR soon after I installed my lunch box filter.When I made it the 40 miles to shelter,I checked it out.It was dry and the engine never missed a beat.Luckily the wind wasn't blowing. ;D
peteGSX
Zuk's Rock!
Re: Suzuki GR650- change is in the airBOX.......
Yeah that's sorta what I thought... what's the centre stay of your 450 that holds the whole bike together? The airbox of course (lame joke alert)
And I believe I scored... amongst other things got a Morgan Carbtune, Gunson Colourtune, and the matching carb tool... now I can really get tuning ;D
How much coal did you score?
Big Rich said:
Yeah that's sorta what I thought... what's the centre stay of your 450 that holds the whole bike together? The airbox of course
(lame joke alert)And I believe I scored... amongst other things got a Morgan Carbtune, Gunson Colourtune, and the matching carb tool... now I can really get tuning ;D
How much coal did you score?
Big R
Heaven is so far away.
Re: Suzuki GR650- change is in the airBOX.......
I bought a GS450 before just for parts - the airbox was on of the last things to come off because of that.
I made out pretty good too. A nice leather jacket, rain suit, and a Craftsman screwdriver set from the Mrs., Blu-Ray player from the in laws, some shirts, etc.
I bought a GS450 before just for parts - the airbox was on of the last things to come off because of that.
I made out pretty good too. A nice leather jacket, rain suit, and a Craftsman screwdriver set from the Mrs., Blu-Ray player from the in laws, some shirts, etc.
peteGSX
Zuk's Rock!
Re: Suzuki GR650- change is in the airBOX.......
Nice! No coal for you either hey? We musta been better than we thought
Actually I gotta get me a rain suit at some point too... even though I don't want to get the 450 dirty I don't want to turn into a fair weather rider either...
Nice! No coal for you either hey? We musta been better than we thought
Actually I gotta get me a rain suit at some point too... even though I don't want to get the 450 dirty I don't want to turn into a fair weather rider either...
Big R
Heaven is so far away.
Re: Suzuki GR650- change is in the airBOX.......
I hear ya Pete. I try to ride as much as possible in our seemingly short riding season, which means getting soaked from time to time. Now only the bike will get wet though!
Back to the bike - I fitted the airbox last night and realized how close the petcock is. Luckily, with the valve in the "on" position there is barely enough room. Disaster averted!
I hear ya Pete. I try to ride as much as possible in our seemingly short riding season, which means getting soaked from time to time. Now only the bike will get wet though!
Back to the bike - I fitted the airbox last night and realized how close the petcock is. Luckily, with the valve in the "on" position there is barely enough room. Disaster averted!
Hoosier Daddy
Earache my eye...
peteGSX
Zuk's Rock!
Re: Suzuki GR650- change is in the airBOX.......
Bet you breathed a sigh of relief then Rich!
My home made bracket attached to the choke actuator in the pic below didn't fair so well... the cable actually pushes the tank to the left when the mounting bolt is loosened... I figured it's only the choke cable so I can cope with it :
Bet you breathed a sigh of relief then Rich!
My home made bracket attached to the choke actuator in the pic below didn't fair so well... the cable actually pushes the tank to the left when the mounting bolt is loosened... I figured it's only the choke cable so I can cope with it :
Cornish Pixie
Ambitious but rubbish cafe builder
Re: Suzuki GR650- change is in the airBOX.......
Hey Rich, just catching up with your build. I like where you are going with this, I know fairings aren't very cafe but I think it will suit your bike real good. I should finish all of the mounting hardware for my fairing over the next couple of weeks.
Will be interested to see how setting the carbs up goes using your airbox - your carb/airbox set up and mine are like chalk and cheese so I guess we won't be comparing too many notes when it comes to fine tuning LOL
Lovely looking bike
Hey Rich, just catching up with your build. I like where you are going with this, I know fairings aren't very cafe but I think it will suit your bike real good. I should finish all of the mounting hardware for my fairing over the next couple of weeks.
Will be interested to see how setting the carbs up goes using your airbox - your carb/airbox set up and mine are like chalk and cheese
so I guess we won't be comparing too many notes when it comes to fine tuning LOLLovely looking bike
