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gs1100 engine on 850

  • Thread starter Thread starter gs850cafe
  • Start date Start date
G

gs850cafe

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now i had a thread but lost it...if im correct i remeber the 100 motor will fit right in to the 850 frame an such right?

my buddy is getting an 82 1000 shaftie with a 1100 titleless bike...is it just swap motors and go? anything else i should switch?

also will my 4-1 header fit off my 850 onto the 1100?

and a few more silly questions...

how much more power will it give...
and is the 1100 as durable as the 850
 
gs850cafe said:
...if im correct i remeber the 100 motor will fit right in to the 850 frame an such right?
Click to expand...
You will have to do a LOT of creative engineering to fit the 100 motor in the 850 frame.

What is "an such right"?


gs850cafe said:
my buddy is getting an 82 1000 shaftie with a 1100 titleless bike...is it just swap motors and go? anything else i should switch?
Click to expand...
There were no '82 1000 shafties.

Is the 1100 titleless bike a shaftie?


gs850cafe said:
also will my 4-1 header fit off my 850 onto the 1100?
Click to expand...
The port-to-port spacing is about the same, but the tubing might be a bit small.
Not sure about the height from the exhaust port to the bottom, for clearance under the oil pan.
You will likely have to fabricate some rear mounts.


gs850cafe said:
how much more power will it give...
and is the 1100 as durable as the 850
Click to expand...
If you are fitting the 100 that you originally described, there will be a massive LOSS of power.

Given the same treatment, the 1100 will be as durable as the 850.

.
 
Yes you can put an 1100 in an 850 frame. I have done it. When your removing the 1100 motor you will have to remove the valve cover. Other than that its a plug and play situation.
 
elevatorman71 said:
Yes you can put an 1100 in an 850 frame. I have done it. When your removing the 1100 motor you will have to remove the valve cover. Other than that its a plug and play situation.
Click to expand...

ok thanks..i was about to post that i went an looked at it...its complete minus carbs...

i wasnt sure if the shaft/mounts was the same

thanks for the info guys...

also whats a running(ill hear it before i buy it) 1100 motor worth without carbs(has airbox)..also coils the same i presume?
 
just an update i just bought the 1100 for 50 bux!!!...all cyls have within 135-140 psi...i also got the carbs that are in need of some soaking....

time for another winter project

edit: also how can i tell if its a points engine?...
 
Last edited:
gs850cafe said:
just an update i just bought the 1100 for 50 bux!!!...all cyls have within 135-140 psi...i also got the carbs that are in need of some soaking....

time for another winter project

edit: also how can i tell if its a points engine?...
Click to expand...

What is the year model of the 1100? If it is a an 80 or later, it is electronic.
 
Pop off the ignition cover. It will have either points/condensors or electronic advance mech.

Nic
 
ok heres pics...im guessing its a points?

can i swap my 81 850 ignition onto this?..or would it be easier to sell this engine

2012-10-0716-15-47745.jpg


2012-10-0716-16-02818.jpg
 
gs850cafe said:
edit: also how can i tell if its a points engine?...
Click to expand...
There are two ways, and they are somewhat related:

1. If it's a Suzuki shaft drive, it does not have points (unless it's a '79 850).

2. If it's an 1100 (either shaft or chain), it does not have points.

All Suzuki GS bikes came with electronic ignition starting with the '80 model year.

The '79 850 was the only shaft-drive Suzuki that was available before the '80 model year.

The 1100E and 1100L (chain-drive) started in '80, so they had electronic ignition.

The 1100G and 1100GL (shaft-drive) started in '82, so they had electronic ignition.

.
 
Steve said:
There are two ways, and they are somewhat related:

1. If it's a Suzuki shaft drive, it does not have points (unless it's a '79 850).

2. If it's an 1100 (either shaft or chain), it does not have points.

All Suzuki GS bikes came with electronic ignition starting with the '80 model year.

The '79 850 was the only shaft-drive Suzuki that was available before the '80 model year.

The 1100E and 1100L (chain-drive) started in '80, so they had electronic ignition.

The 1100G and 1100GL (shaft-drive) started in '82, so they had electronic ignition.

.
Click to expand...

ahhh ty steve...that explains alot...now one more question..how do i know its an 1100...the carb to intake boots are larger then my 850 i know for sure

also will the 140mph work on my 81 850?
 
Last edited:
gs850cafe said:
ahhh ty steve...that explains alot...now one more question..how do i know its an 1100...the carb to intake boots are larger then my 850 i know for sure

also will the 140mph work on my 81 850?
Click to expand...
Look on the front of the cylinders, I think it would be the bottom edge, left side (in front of Cylinder #1). The engine displacement is shown there.

Yes, the speedo should work.

.
 
Steve said:
Look on the front of the cylinders, I think it would be the bottom edge, left side (in front of Cylinder #1). The engine displacement is shown there.

Yes, the speedo should work.

.
Click to expand...

ah well neat...mine said 1074...guess they round it up to 1100?
 
gs850cafe said:
ah well neat...mine said 1074...guess they round it up to 1100?
Click to expand...
That would be correct.

None of the bikes were ever quite the displacement that was shown on the side covers. Some were more, others were less, all were approximate. :D

.
 
gs850cafe said:
just an update i just bought the 1100 for 50 bux!!!...all cyls have within 135-140 psi...i also got the carbs that are in need of some soaking....

time for another winter project

edit: also how can i tell if its a points engine?...
Click to expand...

Remove the right side crank/ignition cover and look. If you see two sets of points, that is your answer. LOL
 
earlfor said:
Remove the right side crank/ignition cover and look. If you see two sets of points, that is your answer. LOL
Click to expand...

just it i dunno what points look like lol...i know it looks diff then my 850..theres a pic below of it
 
It's not points.. appears to be a stock electronic ignition with electronic advance in the ignitor from an 82... :)
 
salty_monk said:
It's not points.. appears to be a stock electronic ignition with electronic advance in the ignitor from an 82... :)
Click to expand...


awesome ty...now this will work with my 850 coils/cdi box right? do i need anything special?
 
I think your 850 will be mechanical advance... Take your side cover off & you should be able to see the difference. It's possible that you might be able to transfer the whole lot (incl the mechanical advance unit) over the the 1100.... I don't know but I suspect the advance curve of those two 8v engines are set very similar at the factory.
 
salty_monk said:
I think your 850 will be mechanical advance... Take your side cover off & you should be able to see the difference. It's possible that you might be able to transfer the whole lot (incl the mechanical advance unit) over the the 1100.... I don't know but I suspect the advance curve of those two 8v engines are set very similar at the factory.
Click to expand...

luckily i have a spare off another 850..ill take it off an see...oh wise steve...do thou hath any input?
 
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