Katana of the Month - October 2007  SEQX34
 

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Mechanics 101 Can't get it to run right? Find a trick to add HP?
From the first oil change to completely rebuilding the engine,
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Old 06-18-2008, 05:01 PM   #1
bigmatthew46
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Default GSXR 750 cams in a 750

Has anyone put GSXR 750 cams in their 750 Kat. I know they will work I'm just wondering if you can expect the same type gains as putting them in a 600?
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Old 06-18-2008, 06:35 PM   #2
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look at the lift durations, you tell me if they are better
http://katriders.com/vb/showthread.php?t=75466
BTW a 10th of a mm DOES make a difference.
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Old 06-18-2008, 06:42 PM   #3
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I asked Ivan about this before purchasing his kit and he said (basically) that one needs to decide whether they want low/mid power or high-end power. I opted for the low/mid power since I'm driving on the street, not the track (where high-end-of-the-RPM-band power would be more desirable).

Basically Gixxer cams would "fight" the benefits of the Ivan's kit and other typical Kat mods that yield better performance in the low/mid range.

If you want, you could always swap a GSXR engine into the Katana. . .
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Old 06-18-2008, 06:48 PM   #4
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Quote:
Originally Posted by KatScratchFever View Post
I asked Ivan about this before purchasing his kit and he said (basically) that one needs to decide whether they want low/mid power or high-end power. I opted for the low/mid power since I'm driving on the street, not the track (where high-end-of-the-RPM-band power would be more desirable).

Basically Gixxer cams would "fight" the benefits of the Ivan's kit and other typical Kat mods that yield better performance in the low/mid range.

If you want, you could always swap a GSXR engine into the Katana. . .
With the exception of the cams...... you already have a gsxr engine in your katana. The pre 750's are just that. And supposedly (from some old gsxr guys) the 98+ 750 motors are like an even better version of the 1990 GSXR750 engine, which was arguably the best oil cooled 750 motor. Fix up the valve train, and you've got a seriously badazz motor.
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Old 06-18-2008, 07:06 PM   #5
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Quote:
Originally Posted by KatScratchFever View Post
I asked Ivan about this before purchasing his kit and he said (basically) that one needs to decide whether they want low/mid power or high-end power. I opted for the low/mid power since I'm driving on the street, not the track (where high-end-of-the-RPM-band power would be more desirable).

Basically Gixxer cams would "fight" the benefits of the Ivan's kit and other typical Kat mods that yield better performance in the low/mid range.

If you want, you could always swap a GSXR engine into the Katana. . .
Ivan's kit with GSXR cams is kinda crap, you need a Factory Pro kit for gixxer cams to work right.
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Old 06-18-2008, 07:33 PM   #6
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I've got pods & a DJ stage 3. Did that before I found this site. Needless to say I'm pretty much top end. I have seen that the pre 750 made more power than the 98+ is that right? I think I would go for the 89 exhaust cam. A 771 kit would be sweet anyone have one of those?
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Old 06-18-2008, 07:39 PM   #7
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no, but the pods and DunoJunk stage 3 would work a whole lot better with GSXR cams
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Old 06-18-2008, 07:57 PM   #8
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Good info. here as always, thanks for that.

I'm gonna' give the Ivan's a whirl for a bit and see how I like it. I imagine it'll be quite nice for street driving (might re-do the sprocket too in order to give a little more "oomph" down low, but we'll see).

Eventually if I want to wind it out I think I'll look into one of those factory pro kits.
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Old 06-18-2008, 08:03 PM   #9
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Quote:
Originally Posted by bigmatthew46 View Post
I've got pods & a DJ stage 3. Did that before I found this site. Needless to say I'm pretty much top end. I have seen that the pre 750 made more power than the 98+ is that right? I think I would go for the 89 exhaust cam. A 771 kit would be sweet anyone have one of those?
As far as my knowledge, I believe the pre 750's made more power than the 98+ when stock, or lightly tuned. The 98+ 750's have potential to make much more power. Just look at the 88-89 gsxr750's..... they were fine on the street, but they just didn't cut it in race form. But in 1990, when they went back to the long stroke, and different heads, the race form was far better. (The 1990 GSXR750 is very close in design to the 98+ Katana 750 motor)

Somebody here is running a 771 setup, but I don't remember who.
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Old 06-18-2008, 08:04 PM   #10
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Would it be worth it for me to ditch the Dyno jet & get the Factory Pro? I think I'll do the cams in the near future.
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