The ton in ten....or eleven

[joedrum]

bump this is a great video to watch .....eric explain total end deal on the stock carb mod in your words from the doer ...that you are ... :thanks:

 

[ekvh]

I am aware that speedo's can be off, by a lot. Mine checks close at 60 mph, but is a bit faster than real speed. At 160, who knows what it really is? I just think it accelerates pretty well for 30-40 year old technology.

 

[Ansimp]

How much technology from now will still be so reliable in another 30years?

 

[83gl1200]

Your video and this thread makes me worry I'm going to kill myself on my bike when I get it done. It had a 1200 transplanted into a 83 1100 frame, with 1100 heads when I bought it, not running. Not sure what cam is in there. Then I put shorty mufflers and a vw carb on it, and now it's running and sounding bad like yours. I'm thinking about 1500 coils also. It sounds like it's going to be fast regardless of what cam is in it, but it's an 83 with 16" tires. I hope the gearing being higher on the 83 rear pumpkin keeps the thing manageable.

I wasn't even going for a fast bike it just came this way, and I wasn't trying to make it faster than stock putting a cheap vw carb on it but I think I just did. The only reason I'm thinking of 1500 coils is to match things up now that other stuff is upgraded.

At any rate thanks for the inspirational video, it gives me a benchmark to compare to.

And you're doing 100 on a chopperized gl with long forks? Jesus...

 

[ekvh]

I hope you get yours running soon. I think you might have the best overall platform. Yours will be similar to a stock 1200 except for what the heads and cam do for it. My guess is it's going to pull really nice. Might be even better overall with 1100 cams. You will have to remember to be gentle accelerating out of a curve.

 

[joedrum]

wonder if 83gl1200 is 1100 cams ... if there is no ignition stem sticking out on left side it probably is 1100 cams ...i bet maybe there was no valves hitting the piston problem here .....like to see some pics of this bike .... see what yr 1200 it is ... and ignition set up

 

[ekvh]

1000= 37.07 mm lift. 1100= 36.8 mm lift. 0.27 mm difference from the service manuals, this is the service limit, not the new numbers. That's about 0.010". Helps, but probably not enough to be a true swap. They did have different angles too though. My head is starting to spin again.

 

[83gl1200]

joedrum » Sun Jul 13, 2014 5:03 am[/url]":2fvftji7]
wonder if 83gl1200 is 1100 cams ... if there is no ignition stem sticking out on left side it probably is 1100 cams ...i bet maybe there was no valves hitting the piston problem here .....like to see some pics of this bike .... see what yr 1200 it is ... and ignition set up

I have pics... Let me know if you need to see more detail. Sorry about some being upside down, my tablet confuses me, sometimes it doesn't maintain proper picture orientation when posting even though they show right side up on the tablet.
Also a couple videos on my channel of getting it running. Ignore the smoke, gas leaked into oil from hydrolock making it over a quart too much, now that I changed the oil and fixed float level there's no more smoke.
https://www.youtube.com/watch?v=rau4L9M8Rs0&sns=em

edit (mcgovern61 rotated pics)

 

[Ansimp]

Great photos and video :thanks: also to Gerry for turning the world right side up...

 

[mcgovern61]

Ansimp » Sun Jul 13, 2014 3:51 pm[/url]":cd8b2drd]
Great photos and video :thanks: also to Gerry for turning the world right side up...

Sorry about that Tony, I'll put them back right side up for you for a while... :smilie_happy:

 

[Steve83]

Sounds really strong! Doesn't miss a beat!

 

[83gl1200]

Steve83 » Sun Jul 13, 2014 5:27 pm[/url]":3vf04avq]
Sounds really strong! Doesn't miss a beat!

Yes not too bad considering the carb was just on vw default settings, float level was wrong, and engine flooded with too much oily gas. It sounds even better now esp when you hit the throttle.

I'm going to have to really learn to hold back on the throttle, my last two bikes were 250cc's, and the most recent only had 17hp. This might have what 80hp+ at the wheel?

 

[Omega Man]

I'm going to have to really learn to hold back on the throttle, my last two bikes were 250cc's, and the most recent only had 17hp. This might have what 80hp+ at the wheel?

I love the sound of that!

~O~

 

[83gl1200]

Omega Man » Sun Jul 13, 2014 8:00 pm[/url]":1jl5cyh1]

I'm going to have to really learn to hold back on the throttle, my last two bikes were 250cc's, and the most recent only had 17hp. This might have what 80hp+ at the wheel?

I love the sound of that!

~O~

I'm just guessing its in that range, not sure.
I had a seca 750 years ago that was pretty powerful though, maybe 50hp, so having some power isn't totally new to me, but having had those weak bikes lately I'm used to riding full throttle all the time just to keep up with traffic. Going to be quite a change.

 

[ekvh]

Likely 1100 cams from the looks, but some people have removed the stub from the backs of the cams. I think you can fine 371 somewhere on the cams if they are 75-77, 431 if they are 78-79. I'm not sure of a number stamped into the 1100 cams. Too bad we're all spread out so far apart. I'd love to be able to compare.

 

[83gl1200]

ekvh » Sun Jul 13, 2014 9:17 pm[/url]":lcqoozjc]
Likely 1100 cams from the looks, but some people have removed the stub from the backs of the cams. I think you can fine 371 somewhere on the cams if they are 75-77, 431 if they are 78-79. I'm not sure of a number stamped into the 1100 cams. Too bad we're all spread out so far apart. I'd love to be able to compare.

I heard that if I take a valve cover off to look that it may need a new gasket or it may leak, so I haven't looked. This bike rebuild has bled me dry on money and still wants more parts that I don't have money for.

 

[joedrum]

well i take the valve covers off all the time ... they are set up well really ...usually if one snugs the covers on ..and tightens lower bolts till they bottom out but not torque hard then top bolts they usually never leak is my experience ... 371 cams do not have there number printed on them the 78-79 do have 431 printed on them ..and the 1100 cams have 464 printed on them ... i am rather sure its probably 1100s cams and they probably don't hit piston ... its the duration of the 371 cams that causes the piston to hit the valve as it is closing up on the intake valve .....

 

[ekvh]

Every 3-5000 the valves should adjusted or checked. Sounds like another item on your list. It is rather easy to do. The gaskets should be able to be reused many times. The chrome plated after markets have a history of not sealing as well. Gaskets are around $20.

 

[83gl1200]

ekvh » Mon Jul 14, 2014 6:33 am[/url]":yngk23bk]
Every 3-5000 the valves should adjusted or checked. Sounds like another item on your list. It is rather easy to do. The gaskets should be able to be reused many times. The chrome plated after markets have a history of not sealing as well. Gaskets are around $20.

OK I'll take my chances. $20 is not a problem, its that there are hundreds ahead of that I still need, or want more. Ran out of money before foot pegs and paint, among other things. Still need an air cleaner and tire mounted, still need insurance and registration, cars a/c died and just replaced the car...

 

[Ansimp]

Bills, bills, bills!!! We all know how they slow down the best made plans.