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Suzuki89'1100,90'750,02'1000,06'FXST H-DSoftail Custom
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Discussion Starter #1
They say this can't be done but I have done it . Take 89 750 crankcase, the Pistons and the block off of a2000 1200 bandit. Now your deck the head down on the 1200 to the size of a 750, Mill the ears on the Pistons down so they'll clear the 750 rod holes. But the 1200 pistons on the 750 rods . Now Mount the block from the 1200 onto the 750 crankcase. Put the 7 50 top end back on to the block. Put everything else back in the motorhouse should be torqued to spec and you got one ridiculous motor . With a 14 in the front and a 38 tooth in the back,38mm mukuni slingshot carbs stage 3 jetting, 129 I think,I was able to hit 187.36333mph every morning for over a year strait. And that was GPS on my phone. Oh yeah by the way did high nine quarter mile 9.87222 . Take that to the pavement! Just a little trick you guys might want to try for those who have many motors sitting around like I do.
 

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SuperMod of the North
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You have any pics of this beast? I love the old girls.
 
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Welcome to the Site.

Sounds like a nice build, obviously it worked.

However, Pics, or it never happened LOL! :unsure::sneaky::rolleyes::)
 

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And, I'm sure they're good #'s to run a 1/4 that fast.
Have you put it on a dyno?
 

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SuperMod of the North
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Dave maybe you could school me a bit. I am not well versed in this. What is the advantage of the 750 parts mixed with the 1200? I know back in the day it was popular to mix and match with Chevy small blocks but it was usually the crank to change the stroke length. What displacement did you end up with?
 

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Suzuki89'1100,90'750,02'1000,06'FXST H-DSoftail Custom
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Discussion Starter #6
Don't be hate,n I told you what was needed,If you got skills and the resources,just do it .If you want specs I can't help you .I just build machines how I see them in my mind.Why would you ask what the advantage was .It's all about how much power you can efficiently put to the pavement,and how to properly control it.If you cant understand that ,then thats we're you separate the riders from the
Wrenches.I am 1 in the same! Displacement was 1089,16-1 compression.never put on a dyno.That bike was my babie.i still ride her but now she has a 1100 in her.I put VR116 fuel in her and blew the motor up one day doing around 150mph on the99freeway.guess I got my mix wrong lol .I'll post dig up some pics there in old phones .oh ya did I mention it was stuffed In a 1989 750 frame with 1996 1100 front upside-down forks and rear top railed swing arm.got to go guys" loud pipes save lives and keep the rubber side down.!!"
 

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SuperMod of the North
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Wow. Yeah, not hatin. I asked because I don’t know and apparently you do. What would you do differently if you were to build another one?
 

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Suzuki89'1100,90'750,02'1000,06'FXST H-DSoftail Custom
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Discussion Starter #8
I would do the exact same thing exsept I would not recommend vr116 I would use 106 octane .easier on the Pistons.
 

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Suzuki89'1100,90'750,02'1000,06'FXST H-DSoftail Custom
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Discussion Starter #9
About the Crank to there the same you change the Pistons and you deck(cut) 3 ribs off the hole 1200 block then redrill the oil jet holes to reses them if the engine has them but the 1989 750/1100 is the same design for the 2000 bandit 1200.i just happened to get a 1200bandit one day stripped the motor and electrical out threw the rest of that piece of shit in the trash .I buy every old school 2nd an 3rd gen I find.89' 90' you my know. Those engines can produce a lot of raw horse power and torque if you know how to play with'em.any how I love my old school gsxxxrrrr!
 

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SuperMod of the North
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Are you running stock farings? Does it change the location of the faring mounting button on the side of the engine?
 

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SuperMod of the North
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I have an '89 1100 that I rebuilt all stock. I have a second '89 1100 frame and tucked it away for a race bike at some point. Your engine build kinda interested me for that reason. I have never built an engine so therefore the questions.
 
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