I'm an airbox believer

[KEITH KRAUSE]

Skip, the info is fine but I originally posted about a typical 2 valve 70's GS1000 and how I think a quality pipe/pods effect the performance. The factory made significant advances in the stock airboxes in general from '78 to '85. Also for the header in general. 4 valves per cylinder helped.
The factory addressed flow much better in the 80's and the same intake/exhaust mods produced less significant flow change by changing to pipe/pods. As time went by, such as into the 90's, installing pods could actually lower the performance because the stock airboxes were well designed. Same to some degree for the headers.

 

[blowerbike]

ran 10.40's w/ drop in cams and radial slides..16t front sprocket..no air shifter ect..head had never been off.
added 3" over arm..dropped to a 14t front sprocket..
dialed a 10.33 at muncie dash for cash with out any time runs on new set-up.
broke out with a 10.30 flat.
dead stock 85 1150E/drop ins and 3 over arm..thats it unless you count the front sprocket..no ignition/no coils/no shift light and a metzler ME88 150/70 tire and stock E model handlebars(you don't have to have low bars to go fast.
this was also with a dual exhaust..no 4into1 stuff happening.
does anyone have a guess the pipe i was running?
if i had the money back then...i would have had a ported head and piston kit.
back then i had plenty of time and not much money..you get the most and more out of what you have to work with.
it all depends on who's riding and who's doing the work..
if no one here has ever spent a couple decades of there life doing this stuff at the track...dont read and assume a things...
case if fact..
read all the questions asked on this board that alot of the times are self explanatory.
and for the record...
a set of 36mm radial slides are worth 3 solid tenths on the same night/ same bike/ same rider/ verses jet kitted CV 1150 carbs on a 1150 Suzuki.
any comments?
i'm all ears.:lol:

 

[rapidray]

Heck Terry, 33 ROUND slides were worth 3 tenths on my blue 85 1150E model! Ray.

 

[blowerbike]

Heck Terry, 33 ROUND slides were worth 3 tenths on my blue 85 1150E model! Ray.

when i was doing this stuff i posted...
i think you was riding a fire breathing 700 at the time:lol:
just messin with you raymond

 

[mixongw]

Speaking of esthetics, purely. I want to add a Hypercharger to each side of my air box. Too expensive just for the look.

 

[rapidray]

when i was doing this stuff i posted...
i think you was riding a fire breathing 700 at the time:lol:
just messin with you raymond

Ok, first off, it's just Ray, there's no "mond". Second, I USED to have a fire breathing 85 700ES! So there!!! LOL!!! Ray.

 

[81gs1100]

So here is what you do, buy your stacks, and some universal UNI foam (sold in cut to fit bulk at your local cycle shop) Now cut and shape the UNI foam to fit snug and complete into each stack. Now the interesting part.. is the fine mesh screen at the base of the stacks? If so just drill an 1/8" hole across the tops of all the stacks and slide threaded brass rod through all the holes to hold in the UNI foam and put lock nuts on the ends to keep the rod from falling out. Now take the bike and a pile of jets to a shop with an EGA machine and do some tests, also bring a few small washers to shim the needle is needed.

If the screen is on top I don't know a good way to keep the foam in the stacks. Not at this moment anyways. I would hate to have the motor gobble up the foam the second it comes to life. Maybe just drill the holes in the middle of the stacks and run the rod through the foam as well.. that would lessen the pressure on the mesh as well as hold the foam in. I just don't know if the foam will tear or not. never tested that.



Either way non-filtered air = bad news for anything moving on the gas side of the stacks.

 

[Guest]

Why not just spring for a set of K&N's instead of all this ^^^ ?

Tony.

 

[KEITH KRAUSE]

Why not just spring for a set of K&N's instead of all this ^^^ ?

Tony.

Because we're bikers man. It's what we do.:lol:

 

[sonnygs1100]

thought i would add some gas to the fire. My own experience . stock 1985 GS1150 these numbers are from my memories I did not save all my time slips way back then. 11.0 something at 122 something. Next the same GS with Vance and Hines megaphone, Fours and More jet kit, k&n filters and Dyna coils for about 10.85 @ 124ish. Up next came 38 flat slides and the ET dropped to 10.75 and the mph only went up two to about 126 . Then came the rest of the puzzle that put it all together. 1229 kit, mild street porting, cam motion g4 cams, and Dyna S ignition. Now the whole package worked and the ET fell into the 10.45 range with a best of 10.36 @ 134 I was not inexperienced at drag racing and had many runs under my belt before the 1150 ever saw the track. The bike ran with no wheelie bars and the stock swing arm and 130 bias tire. all those mods and I still did not see a full second increase! It was not till I added nitrous that i saw a full second increase over stock in the 1/4 . Now granted my bike was limited due to the stock tire size and stock swing arm. But for what its worth I have never seen anyone pick up a full second with just bolt on performance enhancers discounting a turbo, supercharger or nitrous.

im thinking of adding nitrous but i dont want a repete of this , how do gs1100 motors hold up to fogger kit
http://s170.photobucket.com/albums/u246/sonnydazegunsmithing/?action=view&current=motor.jpg

 

[sonnygs1100]

Because we're bikers man. It's what we do.:lol:

ah maybe socal bikers

 

[Guest]

Because we're bikers man. It's what we do.:lol:

I pondered it some more.....I think it's to project the 'bad ass' image of open stacks, which actually aren't open....not fully, anyway. To each his own....K&N's are as 'bad ass' as I go.
Tony.

 

[mistertoadie]

quote
this was also with a dual exhaust..no 4into1 stuff happening.
does anyone have a guess the pipe i was running?

Uhhh... Stock exhaust? X-pipe? Jardine cross-overs? Remember those jardine 4 into 2s that crossed over in front of the engine?

 

[blowerbike]

quote
this was also with a dual exhaust..no 4into1 stuff happening.
does anyone have a guess the pipe i was running?

Uhhh... Stock exhaust? X-pipe? Jardine cross-overs? Remember those jardine 4 into 2s that crossed over in front of the engine?

no cigar

 

[Guest]

Mac pipes?:-s
The suspense is killing me.

Tony.

 

[mistertoadie]

stock head pipes mated to highly polished F1 slip ons.