I am looking to purchase a '88 GSXR 750 motor! I have found someone that has a motor for sale, but it is not in a bike and he does not have the bike. He said that this motor came out of a '88 GSXR 750.

Is there a way to tell?

Were ALL '88 750's Slingshots?

What is the difference in the carbs from a non-Slingshot motor?

Thanks for any help.

graemlins/thumbup.gif saved

[ 10-21-2002, 08:45 PM: Message edited by: Simon Orttan ]

all '88 750's were slingshots. the name slingshot is used to describe that particular set of mikuni carbs, in 88 they were 36mm.
it's called slingshot, because the carb slides are flat on the airbox side, and the middle parts of the port side of the slides are semicircular. so when you look at them from the top, they look kinda like a slingshot.
the 36mm slingshots were good carbs, they also retrofit to the first gen gixxers, with very good results if you jet them properly. if you can grab a set of 36mm slingshots, they would be a good match for your 1100h.
the later model 38mm slingshots are a bitch to tune right (they're very sensitive), and are too tall to retrofit into the older 86-87 gixxer frames. at any rate, the bores are too big for the older gixxer ports anyway.

as for the motor, i believe 88-89 short strokes were actually 748cc's, not 749's as the long strokes were. if you check the stamp on the left side of the cylinder, it'll tell you what the exact displacement is.

Jeff is correct (as usual) about the 748cc thing.

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'89 750---Factory ignition advancer and shift kit, Barnett Kevlar Clutch and springs, Goodridge SS brake lines.

Thanks Jeff and Umf.

It does have 748cc stamped on it, so I guess it is the one that I am looking for.

Now, are the heads any different than the other 750's from that time frame?

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<font face="Arial,Helvetica" size="3" color="blue">Feeling the Need for SPEED!</font>
'86 1100G
2 - '87 1100H
'88 1100J
And a few Harleys

[This message has been edited by Cherry871100H (edited 12-12-2000).]

yeah, the heads are different. the short stroke motors had 3mm larger bores, with bigger valves and ports. still had the forked rocker arms and screw type adjusters from the first gen, though. redline is at 13k.

If it wasnt so f'n cold outside I would go look at mine outside.

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cmon Tim..dont be a wuss..go outside.. (if its just a part on the workbench..send the woman out for it!)

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TurboTim,

Just let me know where it is and I will look at it for you. http://gixxer.com/ubb/images/icons/smile.gif

Do you have parts for sale or just spare stuff that you are holding on to?

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<font face="Arial,Helvetica" size="3" color="blue">Feeling the Need for SPEED!</font>
'86 1100G
2 - '87 1100H
'88 1100J
And a few Harleys

[This message has been edited by Cherry871100H (edited 12-13-2000).]

[QUOTE]Originally posted by Cherry871100H:
[B]I am looking to purchase a '88 GSXR 750 motor! I have found someone that has a motor for sale, but it is not in a bike and he does not have the bike. He said that this motor came out of a '88 GSXR 750.

My question would be why?...the short stroke was left behind after two years of trying to get it to run like the old long stroke. Look for an older or newer version long stroke. The 88-89's also had problems with pieces of combustion chamber breaking off and being inhaled into the engine. Better yet put that 1100 in it. That's want I'm doing now.



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89gixxer,

I am buying it for the Head, cams, and carbs.

You can use those 3 items on a 1052cc 1100 and it really makes a difference in the motor without having to spend a fortune on head work.

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'86 1100G
2 - '87 1100H
'88 1100J
And a few Harleys

or take the 88/89 engine..put in a 1052 crank, big block, and some pistons and you have a 1100 engine with 750 cases..good sleaper engine!

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<BLOCKQUOTE><font size="1" face="Arial,Verdana">quote:</font><HR>Originally posted by TurboTim:
If it wasnt so f'n cold outside I would go look at mine outside.
<HR></BLOCKQUOTE>

Mine gets a treat this year....its in my bud's garage for the winter - heated!! Its going to spoil the tanker for next year. Anyhow, the wife is jealous; her F4 is still sitting outside. hehehe http://www.gixxer.com/ubb/images/icons/smile.gif

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Fat Bastard's bike: '93 GSXR1100wp CDN version w/ thoroughly ridiculous # of mods :)

<BLOCKQUOTE><font size="1" face="Arial,Verdana">quote:</font><HR>Originally posted by Cherry871100H:
89gixxer,

I am buying it for the Head, cams, and carbs.

You can use those 3 items on a 1052cc 1100 and it really makes a difference in the motor without having to spend a fortune on head work.
<HR></BLOCKQUOTE>

I know where you're going with that plan, I've been there as well, be aware that the head will increase your compression big time, unless you releave the dome. You my at least want to peen your rods and maybe bush them as well. Run race fuel because your higher compression will demand it or you'll detenate under full load. I found the cams in my '89 to be direct dups of the 1052. Maybe yours will differ. You'll need racing valve springs or you could float the valves on a big mis-shift. Just my two cents.

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89gixxer,

Thanks for your input and that is exactly where I am planning on going. I plan on running race fuel and changing out the valve springs.

Can you please explain:
<BLOCKQUOTE><font size="1" face="Arial,Verdana">quote:</font><HR>You my at least want to peen your rods and maybe bush them as well.<HR></BLOCKQUOTE> a little further.

Thanks

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http://cwm.ragesofsanity.com/s/net2/burnout.gif
'86 1100G
2 - '87 1100H
'88 1100J
And a few Harleys

i got my 86 gsxr 750(g), what does the G mean and what is the difference in the other models. another thing is that when i got the bike, it had ''slingshot'' written on the rear cowling (plastic)... did they make the "slingshot" in 86 and how can i tell if its a sling shot or not?:dunno

i got my 86 gsxr 750(g), what does the G mean and what is the difference in the other models. another thing is that when i got the bike, it had ''slingshot'' written on the rear cowling (plastic)... did they make the "slingshot" in 86 and how can i tell if its a sling shot or not?:dunno

Nope First Gen bikes (85 - 87) were not slingshots. Slingshots came out in 88 and it was all about the carbs. The engine was a short stroke too, which also made it different than the first gen bikes but the term slingshot was coined as described a few posts above due to the carbs.

Nope First Gen bikes (85 - 87) were not slingshots. Slingshots came out in 88 and it was all about the carbs. The engine was a short stroke too, which also made it different than the first gen bikes but the term slingshot was coined as described a few posts above due to the carbs.

thanx for the knowledge, im building a streetfighter out of my bike but there are a couple of body mods that are going to be tricky. the 03 r6 is one of the worst and i guess the simple one will be the zx-6 front fender. if anyone has any advice on the body work. by the way andrew... love the fast black and red:cheers

this thread is almost 9 years old... talk about being old school.

thanx for the knowledge, im building a streetfighter out of my bike but there are a couple of body mods that are going to be tricky. the 03 r6 is one of the worst and i guess the simple one will be the zx-6 front fender. if anyone has any advice on the body work. by the way andrew... love the fast black and red:cheers

Thanks.... You know your colors. I added the blue wheels and front fender to reign in the speed a bit :lmao

Put up some pics of your project! You'll find lots of help amongst the group here.

lol i bet if you paint to match...it might even be a lil faster. definantly going to post pics but im trying to get a few more before doing so...o yea and owning a camera would help too

another question i haves is will the 88-89 fairings bolt up to my 86 with no modification?

no it will not

would anybody happen to know where i can order another swingarm for my 86?

would anybody happen to know where i can order another swingarm for my 86?

I think they're discontinued but they come up on EBay from time to time or you can get a Red R and check out the Classifieds. I picked up a pretty decent one (no scratches or gouges) last year from a guy in the classifieds for about $75.

i was wondering why i was having such a hard time finding one, but it sounds like u gotta really good deal for 75 bones

i was wondering why i was having such a hard time finding one, but it sounds like u gotta really good deal for 75 bones

I know... they're hard to find except.... Right now there's an 85 swingarm in near perfect condition for sale in the classifieds for $75. It's not one of mine. It's one of the other guys.

* 85 is a slightly shorter swingarm which does make the bike a little twitchy. In 86/87 they added about another 1.5" to the length to settle the bikes down.

this thread is almost 9 years old... talk about being old school.
I agree..holy batshit

Tales From The Crypt Hehehehehe!

anyways, yea i like the longer swingarms my self, they feel a little more stable and u dont haveto worry about them standing up on ya as much

anyways, yea i like the longer swingarms my self, u dont haveto worry about them standing up on ya as much

Thats not really an issue on a first gen 750

Thats not really an issue on a first gen 750

Not after you've had it for a week or so.

Within the first 7 days of owning my 85 when it was new (and stock), by accident I pointed it straight up by shifting first to second at the top of a hill while hard on the throttle.... I set it down pretty fast but it was a big surprise I'll tell ya.

But yeah, generally unless you've done some work to it, you have to work it and shift your weight over the rear wheel to get the front end up. All it takes is a pipe, K&N and jetting to get more out of them though.

Thats not really an issue on a first gen 750

its not an issue unless u want it to be:punk

its hard for me to raise it up sometimes but the again i dont weigh but 145 so it likes to spin a bit

its hard for me to raise it up sometimes but the again i dont weigh but 145 so it likes to spin a bit

Yup that's the problem I had with mine if I tried to clutch wheelie it. It would just spin the back tire off the rim. I weighed about 150lbs... Now I'm 190lbs.

When I had the racing pipe and bored out carbs on it, I had just under 110HP at the wheel and I could do power wheelies in first or second gear and I could raise the front wheel really nicely if I hit a rise just right and dropped a gear with the throttle on.

I'll have to get her out in the next couple of days and see if I can lift the front wheel like I used to :punk

yea i let one of my friends ride up the street yesterday and he thought he was gonna shift to second and romp down on it. lol needless to say he got a reality check real quick like. man i wish ya'll could have seen that one. LOL it was great

the only performance parts that i have on my gixxer is the k&n filters and a vance & hines pipe and header(chopped,gutted,and way too loud) but other then that its pretty much bone stock. but anyways good luck on your wheelies and dont get too crazy...cause as we all know...CRASHING SUCKS!