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GSXR Head on GS1100

  • Thread starter Thread starter akreider
  • Start date Start date
A

akreider

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I read that a gsxr head can be installed onto a gs1100 engine with modified cylinder studs. What year and size head fits? And what would the benifits be from the swap?

Adam
 
That was the website that peaked my interest but it doesnt go into more depth about what year or size gsxr head. Also how to mount it and the gains that would result and why it happens. And now I am really interested in what the purpose of angle milling a head is.

Thanks for the response though, I am learning more about what these engines can really do.

Adam
 
IMHO there is much power to be gained from porting the stock GS head .
Yes I like the GSXR idea but for practical purposes I'll stick with the ole GS head .
he shows the oil cooled GSXR head I would imagine itis the 1100 version . the 1100 Katana head would work as well .
I think in 1992 or so they went to water cooled wih the GSXR and they will not work :wink:
 
Now I am wondering if instead of going through the process of getting a new head if I could have the stock head milled down to increase the compression. And install a dyno ingnition with a timing advancer to prevent detonation. And install cams from a 83 1100.

Would that be a better route to go for more performance instead of the gsxr if I am not going to be putting in a larger piston kit?

How much could the head be milled down, is this where angle milling would be a good choice?

And I did mill the head down would I have to have the valves cut down at all to avoid contact with the cylinders or is that just a matter of degreeing the cams?

Adam
 
Myself I would not mess around too much milling the head for compression as I would get the ports shaped up and a good valve job done .

Heck drop a tooth or two on the front sprocket and the bike will accelerate like it has a big bore kit LOL!!!
 
I was going to do that also with the performance mods. I really love doing wheelies!!!

Adam
 
IMHO there is much power to be gained from porting the stock GS head .
Yes I like the GSXR idea but for practical purposes I'll stick with the ole GS head .
he shows the oil cooled GSXR head I would imagine itis the 1100 version . the 1100 Katana head would work as well .
I think in 1992 or so they went to water cooled wih the GSXR and they will not work :wink:

We have had this discussion before!!! The Katana 1100 is a GS 16 valve air cooled motor.
Anything that does not have a GS series motor in it IS NOT a Katana, a sticker does not make a Katana!!!

Dink
 
We have had this discussion before!!! The Katana 1100 is a GS 16 valve air cooled motor.
Anything that does not have a GS series motor in it IS NOT a Katana, a sticker does not make a Katana!!!

Dink

:-\" :lol: ;)
 
www.bertaut.com shows pictures of it being done, but there's no technical details on how it was achieved.

I for one would be interested. Think about it this way, you could spend thousands on massaging a GSX11xx head, or... a thousand on a stock GSXR1100 or bandit1200 oilhead that will outperform the modified GSX11xx head.
 
1150 head bolts right in with the use of 1150 top end stud kit. gsxr head requires some mods to make it work.
 
I have put an 1150 head on both my street bike and the Tubo bike. You gain HP but you lose the stock tach. Have to go Autometer or some other electric tach. I think its worth it.
 
Do you know anywhere I can get a 1150 head for a good price?

Adam
 
I would watch ebay. Sometimes they go really high, but other times you will see them go low.
 
I have been keeping an eye there but like you said they are few and far between let alone sold for cheap.

Thanks

Adam
 
Call me at 714-356-7845. I have a VERY nice 1150 head that is complete & only had 6000 miles when I took the motor apart. $450.00, Ray.
 
kit to do this

kit to do this

SuzukiRay told me recently that he has produced a kit to mount oil cooled (GSXR, Bandit, and some bikes Suzuki called 'Katana') heads on air cooled engines. I would say that you need to have a drag racers' attitude (Blew it up? oh well,That's Racing!) and experimental rocket scientist's willingness to fiddle if you choose this route.

The oil cooled heads have much better ports and larger valves than the GS series, and are generally thought to flow better, stock, than one can get spending lots of $ modifying a GS head. Down side of this is that they have lots less metal in, and are designed to have the high volume oil flow of the GSXR series engine over the cams and chamber area. To duplicate this on a GS bottom end requires figuring out how to get more oil flow, and I don't mean the 30% more you get with GS750 gears.

Plenty people have done it without adding an aux oil pump, and I intend to do so myself this winter, just saying....

I have the advantage of northern latitude, so my ambient temps tend to be below 80F and I never, ever sit in traffic. I would stick with a GS head if I lived or rode in a big city and often got the thing really hot by moving slow.

OH yeah, - No I do not wish to argue over 'REAL' Katana. One might just as well posit that "Real" Katanas have a two edged blade and once drawn cannot be put away until blooded. So messy...

I notice the brits tend to lump all the GSXR type engines together as 'oil boilers', maybe that works.
 
We have had this discussion before!!! The Katana 1100 is a GS 16 valve air cooled motor.
Anything that does not have a GS series motor in it IS NOT a Katana, a sticker does not make a Katana!!!

Dink

Dink, please elaborate for me...

Is this a Katana?
bird.jpg


Or is this a Katana?
16-Inch-Big-Wheel-Tricycle.jpg


OH! I have got it!! THIS is a Katana, right?
surfclm1.jpg


I'm so confused... might this be a Katana?
popsicle.jpg
 
OH yeah, - No I do not wish to argue over 'REAL' Katana. One might just as well posit that "Real" Katanas have a two edged blade and once drawn cannot be put away until blooded. So messy...

I notice the brits tend to lump all the GSXR type engines together as 'oil boilers', maybe that works.

LOL, there's no argument - a Kat has an GS series engine. Everything else that has that lable is a cheap marketing ploy! :evil::evil:

I call the GSXR type engines "SACS motors". That seems to get it, and plus it lets you laugh at noobs who ask, "sacks? what's that mean?" :lol::lol:
 
Hi

Hi

I've done some looking into the camshaft swap.

91 and up won't work. They are eight lobe cams, which I'm assuming means that's when they went to water cooling...

Anywho...
Just doing the cams is supposed to give you a pretty good bump, throw in having someone port the heads for you, or just some polishing, and you'd probably come close to what you'd get with the whole swap, only much cheaper.

(You can find the cams reaaalll cheap on e-bay or putting a 'want' out on craigslist)

I bought a set of cams from a guy that said he thought they were 1990s, but they are definitely 1991,1992. I got them cheap enough that I can make a few bucks selling them to someone else..... but I want to get this swap done!
 
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