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katana cams vs slingshot cams

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#2 ·
the answer would be answered by the question does it go like a slingshot
 
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#3 ·
Off the top of my head, NO. I'm looking for the specs on the Kat cams but the 88/89 750 cam is the same as the 90 1100 cams and were the largest stock ones produced. I'll post the numbers for the cat cams when I can find them this afternoon. (and I'll post the GSXR numbers as well)
 
#5 ·
I believe the katana intake cam is the same as the gsxr exhaust. The Katana exhaust came is tiny and different. I use to have both sets and measured them and this was the case as far as lift was concerned. The head is the same as the gsxr though...
 
#7 ·
I have the specs/paperwork somewhere but if i remeber right, the lift on both cams are the same but the GSX-R cams have more duration(valves stay open longer)

Edit: found a small file that might help, have complete specs on the 88 gsxr cams ill put up as soon as i remeber my photobucket pass :banghead :lol
 

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#8 ·
why not try the gsxr cams in the head and spin the engine over by hand and check for interferance?i thought the gsxr cams in a kat were supposed to be an upgrade.XracerX might know. he even has a kat turd.
 
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#9 ·
Right on... I thought that was the only difference between the Kat and GSXR engines. I thought that if I threw GSXR cams in my turd it would .....POOF.... become a real engine.

Hey, what up biggity Ballz? How are you doing these days? You sell your bike? I'm up in VA this week. :cheers
 
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#10 ·
Here's the gsxr cam specs. If you cross reference the 88/89 gsxr750 cams on ron ayers, you'll find that almost every oil cooled gsxr had the same specs. Old Skool_R where did you get the katana cam info? I had 2 sets of katana cams and the intake matched the gsxr exhaust in lift and the katana exhaust was much smaller then either of the gsxr cams. Maybe the katana cams I had were worn but that's what I measured anyways...
 

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#11 ·
The Kat engines are supposed to have a lower comp ratio too. But a set of 90 1100 cams or a set of SS cams WILL wake up your KAT motor Kool.

Thats what is in my B-12 motor in my '86. A set of SS 750 cams and 11:1 pistons.
 
#13 ·
well....if I come up with some money for some and can get someone to show me how to replace them then that's definitely an idea :thumbup
 
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#16 · (Edited)
I just finished doing some research on BikeBandit.com, which is a site I use for buying parts for my 92 1100 Katana.

The part numbers listed below are BikeBandit's part numbers so I don't know if they're the same as Suzuki's.

Here's what I came up with:

1992 GSX1100FN Katana (my bike) and the 1988 GSXR-750 use the exact same camshafts: 479698-001 intake and 479780-001 exhaust

1989 GSXR-1100 and the 1989 GSXR-750 use the same intake cam as the two above - 479698-001 but a different exhaust 479783-001

1994 750 Katana and 1986 GSXR-750 use 479732-001 intake and 479799-001 exhaust; different from all the ones above.

1992 GSXR-750 uses 479712-001 intake and 479786-001 exhaust.

1992 GSXR-1100 uses 479740-001 intake and 479804-001 exhaust.

No specs on duration, lobe lift, etc. were listed.

I didn't look at every GSX/GSXR/750/1100 combo, just the years I thought were revelant to the exchange.

Hope it helps.

Jake
 
#18 · (Edited)
Okay, I did.

I checked the valve springs on nine of them. I can't really tell which spring has more pressure than the other though, but here's what the numbers show:

1992 GSX-1100FN Katana, 1989 GSXR-1100, 1989 GSX-1100 Katana and 1988 GSXR-1100 use the same spring, 480404-001

1992 GSXR-1100, 1992 GSXR-750 and 1992 GSX-600 Katana use the same spring, 480426-001

1988 GSXR-750, 1989 GSXR-750,1989 GSX-750 Katana and 1994 GSX-750 Katana use the same spring, 480412-001

1986 GSXR-750 uses 480415-001 spring

I just checked the 1989s and incorporated them above.

One thing I just noticed is that although the 1989 GSXR-750 and the 1989 GSXR-1100 use the exact same camshafts, they use different springs. Go figure.

Best I can come up with is that the 1989 GSXR-750 has a higher redline, so it needs more spring. If that's the case, the 480412-001is the spring with the most pressure.

WHEW!!

Jake
 
#19 · (Edited)
Or the '89 750 high-port head uses a longer intake valve, thus requiring a diff spring to get the same seat pressure as a head with a shorter valve.

Or this could be a case of aftermarket mfg groups stuff into a 1 part fits all kind of senario.....

We really need to get our hands on actual camshafts and take measurements to know for sure.

Okay, i have a Factory Service manual for the 1st gen 750's. I can get actual factory cam specs out of it. Who here has the KAT manuals to get actual cam spec out of???? We should be able to go into the manuals right here on site and get all the GSXR cam spec for all neccesarry years right...???
 
#20 ·
What I did was obtain the information I posted from the OEM Section of the site, as opposed to after-market however I didn't intend it to be all inclusive.

Such things as installed height, seat pressure, etc., weren't listed. I just wanted to show the commonality of parts between and among different year and model engines.

My 1992 GSX-1100FN Katana's "Suzuki Service Manual" shows the following for the camshafts for years 1989, 1990, 1991 and 1992:

Cam height: Intake 33.878/33.918 mm/exhaust 33.533/33.573 mm (1.3338"/1.3354" in/1.3202"/1.3218" ex)

IO:42/IC:70 EO:65/EC:39 although it doesn't show where these measurements were made (BTDC/ATDC). Some of you cam gurus can sort that out for us.

I didn't see any duration @ .040" or .050" numbers listed. I posted a chart where some actual measurements were made, so comparing the info on that chart with the numbers I and others post my help clear away the smoke.

Jake
 
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