• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

gs1000 bored out - questions

Gregory

Forum Mentor
Past Site Supporter
I found a gs1000 motor that is bored out to 1200cc.

How would it compare in quickness to... lets say... a 16 valve 1100?

Would it be as simple as just swapping the motors over, or would it need different carbs etc?
 
I think it depends on its price and what you want to do with it. Street use? race?
I don't think carbs match up the same, but headers do. it will bolt into a 4 valve frame, just have to modify one front motor mount.
 
I think it depends on its price and what you want to do with it. Street use? race?
I don't think carbs match up the same, but headers do. it will bolt into a 4 valve frame, just have to modify one front motor mount.

it is a 1000e engine so it will obviously fit in my 1000e frame, it has only been bored out to 1200cc...

just wondering if it would be much faster and whether I can use the same carbs and jetting that I have on my stock bike
 
A chain drive 1000 cylinder can not be bored out to 1200 without changing the cylinder liners. The typical 3mm over bore kit makes the engine 1085cc, not 1200. The biggest over bore for the engine is 3.5mm, and the liners are getting quite thin at that point. I'd question the size of the engine unless someone provided you with more information as to what's been done to it.

It's somewhat rare for someone to go though all the trouble of building a big engine without also doing something to the head/cams. If the over bored engine has aftermarket cams, then it may have a good deal more oomph that a simple stock over bored engine. Again, more info needed before you can judge.

My understanding is the 1100 and 1000 chain drive engines interchange, other than the engine mount bolt under the crankcase won't align. This bolt is not overly important anyway so you can just skip it, or buy some conversion plates. I'm not an expert on swaps like this so use this information as a trigger to research more. There are threads in the archives on this subject so please dig around using the search feature if someone doesn't chime in with more info.
 
ok thanks much appreciated. Actually thay say it is a 1000cc bored to 1220ccs but i will do some questioning and more research
 
people lie or are misinformed over the years.
some things never change.
it's a chunk of money to go bigger than 1100cc on an 8 valve chain drive engine.
 
it is a 1000e engine so it will obviously fit in my 1000e frame, it has only been bored out to 1200cc...

just wondering if it would be much faster and whether I can use the same carbs and jetting that I have on my stock bike

I wasn't if sure you were putting it in your 1000's frame. How much is the motor?
If you can take a closer look at it pull the clutch cover and look into the crank throw to see if its welded, if it is buy it.
You could have a real jewel there.
A piston kit and bore job would be about $800-$900 ??
 
Back
Top