Unknown part left over after reassembly

[jjz28]

^^^^ If that is what it is, you better pull that motor back apart and put it back in there.

[jwhughes3]

Yup. Dont even think about running without it. Oil pressure wont get high enough somewhere.

I have not torn mine down to that point so luckily never forgot it and had to tear it down again

John

[RJriver]

missing part

Thanks everyone for your replies! i am the one who owns this "81" 1100. my brother started the thread..
It was only one part left over. the dimensions are approx 7/16" long and 3/8 diameter. a part from the crank case, makes sense. will check further

thanks again !!!!

[RJriver]

missing part

Yep the bike stays in the garage! My oil pressure light goes off, but I assume that dosent mean the oil is getting to all areas. four weekends till big trip out west, have my work cut out for me!

Thanks everyone for your help

[motoman]

Yep the bike stays in the garage! My oil pressure light goes off, but I assume that dosent mean the oil is getting to all areas. four weekends till big trip out west, have my work cut out for me!

Thanks everyone for your help

That you do!......................done yet?

[jwhughes3]

I like how you gave him the FULL 6 minutes to get it done!



John

[BigDodge440]

Part next to a ruler

A ruler or something next to it for scale would have been helpful?

IT has a central hole like a jet, but not the full head like most of the jets on our carbs. So...even though it has a central hole, it may not be a necessary function? It almost looks like a set screw...like on the carb choke rod??

Good luck!?
T.C.

Thank you all for your feedback. I took your suggestions and have the part next to a ruler.

http://twitter.com/BigDodge440/statu...034496/photo/1

[crazy steve]

Yep, that's no carb jet......

[TopCatGr58]

Well, with the hints from the others, I looked at the microfiche, and part #13 on the 81H Crankcase fiche shows something like this screwing into the lower crankcase at the mains bearing journals sections...listed as 3 of them for the bike. It's a common part still used on bikes up to the 2011 Vstar engine!

2H7-15138-00-00 Labelled as a NOZZLE. I can't find any real good photos, the microfiche don't show it in enough detail, and a search for the Yamaha Part # just references the fiche. SO....it looks like what is used to help keep the oil pressure UP as it flows into the crankshaft!?

It appears to fit into the LOWER crankcase half, so after you pull the engine, you will "only" need to pull the lower crankcase half off to access it and find the missing hole that's missing it's nozzle! Good Luck!

T.C.

[BA80]

It's an oil flow limiter to keep most of the oil at the crankshaft rather that pumping more than necessary to the cams. You may be OK with out it in there but could cause bearing problems at high RPMs at the bottom end.

[dondons1984]

damn i thought it was to the carbs. looks so familar. lol

[DGXSER]

I knew it was not stock to the carbs, but got confused by the four pics. I have had one XS11 motor pulled down that far, but I was parting it out, not rebuilding, so I never noticed that in there.

[BigDodge440]

A ruler or something next to it for scale would have been helpful?

IT has a central hole like a jet, but not the full head like most of the jets on our carbs. So...even though it has a central hole, it may not be a necessary function? It almost looks like a set screw...like on the carb choke rod??

Good luck!?
T.C.

Here is a couple of pictures next to a ruler. Thanks everyone for your feedback.

http://pic.twitter.com/zEC11jJ3hK

[BigDodge440]

extra part

Yep the bike stays in the garage! My oil pressure light goes off, but I assume that dosent mean the oil is getting to all areas. four weekends till big trip out west, have my work cut out for me!

Thanks everyone for your help

OK Bro, this link is for you. I know you are an avid outdoorsman, is this extra part from a.....drum roll.......

http://www.flickr.com/x/t/0095009/ph...7634569610317/

[trbig]

Well... Was that it? I've never seen this part in our motors.