hello
i'm looking for the intake cam from a gsx-r 750 or 1100 to fit my 1200 bandit
i'm looking for the intake cam from a gsx-r 750 or 1100 to fit my 1200 bandit
intake cam
redbandit12
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hello
i'm looking for the intake cam from a gsx-r 750 or 1100 to fit my 1200 bandit
i'm looking for the intake cam from a gsx-r 750 or 1100 to fit my 1200 bandit
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6 Posts
yes and i did buy a set there but when they came i wasn't sure they are right or they are badly worn. they have a odd profile to them but this is the 1st set of suzuki cams i have seen. intake cam is marked 27a in. J R1 l if that helps
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yes and i did buy a set there but when they came i wasn't sure they are right or they are badly worn. they have a odd profile to them but this is the 1st set of suzuki cams i have seen. intake cam is marked 27a in. J R1 l if that helps
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3,530 Posts
Im pretty sure thats a 1100 intake cam. I re-building a 88 gsxr 750 motor right now, and the short stroke 750's share the same cams with the 1100's. Ill go down in the shop sometime and check the # on the intake cam, but 27A sounds real familiar.
27a should be the 1100 motor if I remember building my bandit's engine. The profiles are quite a bit different but that's why your changing, right. Also a good trick is to swap your current intake cam for your exhaust cam once you change to the GSXR intake cam. I would go ahead and get some adjustable sprockets and change out the whole kit whilst your putting it in then you can really start playing with your power band.
One other thing, the Bandits clutch is crap, see if you can find a complete GSXR clutch and swap your sprocket off the back. Once you get too much power in the Bandits the clutch will fail.
One other thing, the Bandits clutch is crap, see if you can find a complete GSXR clutch and swap your sprocket off the back. Once you get too much power in the Bandits the clutch will fail.
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3,530 Posts
Crap i forgot about this, i did look and 27A was the intake.
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6 Posts
u mean take the bandit's intake cam and use it as the exhaust cam? what will i gain? don't really want to lose to much bottom end. I'm a fat old fart I NEED torque
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1,627 Posts
GSXR1100 86-90 stock cam specifications:
Intake at 0.001" lift:: open @ 42 deg BTDC, close @ 70 deg ABDC, duration 292 degrees
Intake lobe center line: 104 degrees
Exhaust at 0.001" lift: open @ 65 deg BBDC, close @ 39 ATDC, duration 284 degrees
Exhaust lobe center line: 103 degrees
Intake at 0.001" lift:: open @ 42 deg BTDC, close @ 70 deg ABDC, duration 292 degrees
Intake lobe center line: 104 degrees
Exhaust at 0.001" lift: open @ 65 deg BBDC, close @ 39 ATDC, duration 284 degrees
Exhaust lobe center line: 103 degrees
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6,331 Posts
you will definately benifit from the adjustable sprockets you can get a machine shop to mill sprocket bolt holes 6 degrees both ways and advance your inlet cam to 102-104 centreline ,[check at .040 lift ]as using a cam out of another bike will definately need to be checked ,this will give you your torque . small cube engines in heavy cars ,i've built with 97 degree intake centreline with better torque they still haul at 7000rpm ken
Your torque has more to do with your cam timing than with cam lift, by changing the lift and duration you are giving the engine more fuel/air to burn, with the overlap adjusted correctly you can pick your torque back up and keep your powerband lower. Keep in mind that once you open the intake that burned exhaust has to go somewhere. PM me and I'll see if I can find my old build data and specs for the B12 engine
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7,012 Posts
well, I use both the intake and exh '88 750 cams in my B-12 motor, degreed in of course. Along w/ adj sprockets and a Dale Walker(Holeshot Performance) port job. Use an ign advancer and his stg 2 jet kit with a drop-in K&N and a good header, you will like it lots. power from 3200 up to 9500.
ogle:biggrin:burnout
ogle:biggrin:burnoutGG, I like Dales kits but I used an adjustable ignition advance and set it around 2 deg. I seem to get a bit more response than the 5 deg provided. His headwork is great but also look into APE racing, not cheap but very good. I see power from a bit lower than yours around 2800 but I start to lose it earlier too at around 8700. Ivan makes a good kit for the carbs but I think you're right Dales is better.
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my bandit will have 36mm flatsides, holeshot pipe, 5 dergee advancer and if i can find them gsxr cams. not sure if im gonna use both at 1st
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3,530 Posts
torque is over rated....horsepower is where its at :biggrin
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i've got a computor program that gives a schematic of the engine as its being dynoed and iff you open exhaust at about 90 degrees after tdc there is only about 90-100psi left in cyl it pretty well pushes itself out,leaving less work for the piston to push out .as your inlet opens at peak torque there is up to
10psi above atmospheric pushing intake in [as this is why your intake length is important as your exhaust length ],there really isn't a problem with exhaust
reversion by opening inlet early,only iff you have restrictive exhaust-ken
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6,331 Posts
it all comes down to usable power ,years ago concetration was on big ports
4v clevo heads -302 boss ,peak hp,but because they lacked mid range they weren't really successfull against a broader power band engine
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i think we have lost the point of this post. i would like to find a good set of gsxr cams to use in my bandit:cheers
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3,530 Posts
i thought u said u had some. The 27A cam is the biggest stock gsxr cam you can get.
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