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Course of action...

  • Thread starter Thread starter Ponderosa
  • Start date Start date
P

Ponderosa

Guest
Well, finally have a course of action on the two 1100Ls. After looking closer at the 83, the engine is not even in the front mounts, it has a different head on her, both cases scraped, a lot of tinkering done, stripped bolts, so going to pull engine from 82, check her out, tear down, and put in 83..Both mills suffer from low compression, but may be just from sitting, valve clearance, ect... Got the frontend off the 83 and rebuilding forks now. Looking at tires, supprised though, 83 has a 17", 82 has 16" rear.. I still think I can get one good bike from the two, still debating on going with VMs, or CVs, the VMs are small 26s, I will have to go through both so I guess it will depend on the shape of them on tear down.. Will post pics later, low budget build...
 
What VM carbs did you get with either the '82 or '83 1100? :-k

They should have both had CV-type carbs (BS series), and the intake boots on the head to match.

Check the diameter of the carb outputs to make sure they match the intake boots.
Unless you have some aftermarket, larger VM carbs, they might not fit.
26mm VMs will definitely not be enough carb for the bike, even if they do fit in the boots. :o

.
 
Exactly...

Exactly...

Steve said:
What VM carbs did you get with either the '82 or '83 1100? :-k

They should have both had CV-type carbs (BS series), and the intake boots on the head to match.

Check the diameter of the carb outputs to make sure they match the intake boots.
Unless you have some aftermarket, larger VM carbs, they might not fit.
26mm VMs will definitely not be enough carb for the bike, even if they do fit in the boots. :o

.
Click to expand...

Exactly, I think the head on the 83 is from a different bike, I don't know what interchanges, the intake boots are for the 26s, they are in pretty good shape to.. It will be interesting to see the markings on the head once I pull it..I am leaning toward the CVs, although the boots are shot on the 82, I can only hope the vacum boots are still in one piece, darn things are high dollar..
 
2 valve 750 is the only one that used the VM carbs, The 4 valve 750 all used the CV carbs
 
Don't think so...

Don't think so...

SqDancerLynn1 said:
2 valve 750 is the only one that used the VM carbs, The 4 valve 750 all used the CV carbs
Click to expand...

I'll take some pics of this head tomorrow, maybe we can figure out what its from? I was thinking someone swapped boots and carbs, but the head is different in minor ways, the cam chain housing section in front is not square like a 1100...
 
Ponderosa said:
I'll take some pics of this head tomorrow, maybe we can figure out what its from? I was thinking someone swapped boots and carbs, but the head is different in minor ways, the cam chain housing section in front is not square like a 1100...
Click to expand...
take some pics of the carbs too it just may be possible that someone put a sat of 29 mm smoothies on there
 
SqDancerLynn1 said:
2 valve 750 is the only one that used the VM carbs,
Click to expand...
all models from 77 through 79 550 650 750 850 1000 used VM carbs in several different configurations and sizes but from 750 up all used VM26 with different jets and setting for each size bike
 
I'd suggest actually checking the displacement stamp on the front of the jugs of the motor with the VM carbs. I wonder if it isn't actually a 1000 motor since you say the motor mounts don't seem to line up. And I'm not positive but if I remember right the 1000E and G heads were the same, so it's possible, if that's the case that it has an older E head on it for whatever reason and that would explain the VM carbs. Or someone could have sloted the holes in VM boots to fit the CV head. Completely asinine but PO's do some dumb ass stuff. Just thoughts.
 
Here we go

Here we go

The first pic is the 83 head mating area center front (I apologize for the crappy camera work, tried three times no better than this..
709503665_jqvDN-M.jpg


As you can see center screw mounting hole is not on the head!
See pic of 82, same spot..
709503675_zg9L9-M.jpg


Carb boots (26vm's) on 82 do not seem to be modified in any way..
709503700_8uE48-M.jpg


All I can think of is the head came off of a much earlier model, kind of interested what..
 
Talk about POs

Talk about POs

Nothing on this 83 matches! Check out the front fork tubes!
709503686_o2QaV-M.jpg
 
Starting the

Starting the

Starting the teardown of the 82, going to use the engine, exhaust, and many other parts to build the 83. Didn't know the rear tire sizes were different in that ten month period to, 83-17" 82-16"... Anybody got a source for gaskets, mine wants $82 for a head gasket!:mad:
 
Got the engine out of the 82..

Got the engine out of the 82..

It is the cleanest of the two bikes, as far as stripped screws, scrapped cases ect.. As usual all but two of the exhaust bolts broke, this is after soaking in penetrating oil for a week with several apps... The usual always is a pain in the rear, broke one easy out today, now welding nuts onto whats left of bolts, got one out, five to go.... Why don't manufacters use never sieze, aluminum/steel, heat cycles, BAD! If anyone has a good 1100 head, hollar now and save me the agony...:mad:
 
I would bet it is a gs1000 motor 2 valve are the end caps on the cam cover round or square
 
Maybe...

Maybe...

SqDancerLynn1 said:
I would bet it is a gs1000 motor 2 valve are the end caps on the cam cover round or square
Click to expand...


The 83 might have an old 1000 head on it, both of these bikes are two valve bikes, round end caps, but the 83 had the 26 Mik VMs on it, and mating in front is different..

Gotta get back to broken bolt removal, UGH...
 
Ponderosa said:
The 83 might have an old 1000 head on it, both of these bikes are two valve bikes, round end caps, but the 83 had the 26 Mik VMs on it, and mating in front is different..

Gotta get back to broken bolt removal, UGH...
Click to expand...
well unless you know what your looking for when you look at VM 29 mm smoothbores look just like a set of 26 mm VM's so post a pic or 2 of them and lat us have a look
 
Od

Od

Spyderman said:
well unless you know what your looking for when you look at VM 29 mm smoothbores look just like a set of 26 mm VM's so post a pic or 2 of them and lat us have a look
Click to expand...

The OD on the intake side of these carbs are 26MM, pretty sure they are 26s.

692166126_gSrHd-M.jpg
 
Carbs...

Carbs...

Went out and spent a couple of hours, but got all but two of the broken exhaust bolts from the head, had to drill those out, and re-tap. Now comes the tear down...

719750263_RUBaa-M.jpg


VM Carb pics and ID measurements..

719750235_JQ7Vg-M.jpg

719750224_CuGTa-M.jpg
 
Last edited:
That's a 1978 or early 79 head (missing the extra bolt hole for the front of the cam chain tunnel) and those are VM 26s.

She'll be a bit asthmatic on those carbs - best to see if you can pick up some VM28s (cheap on UK Ebay) or VM29s / VM32s (pricey wherever you are). Either that or more modern carbs.
 
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