got a question about my fuel petcock and the "stay engine"

[irishluck]

I know we talked about this before but i cant seem to find the thread that had this.

We discussed how my "petcock" was not a petcock on the gas tank here.

I remember talking to someone and they said to use a 85 or 86 fj 1200 petcock?

can someone explain to why to buy this one instead of an 87? or if there are any cheaper after markets out there?


Also Leon, "1tinindian" you have a 91 fj1200 and took those pics for me which were much appreciated. But I was wondering if you could help me with one more thing. or anyone who has a 91 and knows the answer.

As discussed before, the fj1200 engine will fit into any fj1200 as long as it has the proper frame rails, inserts and mounts.

Also from doing hours of research from the 87 to the 91 diagrams and just looking at parts and what are so different about these bikes, I've come to the conclusion that the engines are literately exactly the same.

Well here is my delima, when hoisting the engine up into the frame everything goes smoothly until the transmission gets up in there. the tranny is an 87 going into a 91 frame. Went its lined up it just seems like i missing something. And when I looked at the 2 different years diagrams for the frame, there is some part that is really different but honestly i cant even find the part on my 87. Maybe you guys can shine some light here, ill post the pics of the diagrams I'm looking at.

sorry for the links, cant post the pics up right now for some reason.

link to the 91 fj.  part im talking about is number 15 at top of diagram
http://www.kennedyscycles.com/fiche_section_detail.asp?section=16663&category=Motorcycles&make=YAMAHA&year=1991&fveh=425

link to 87 fj. part im talking about is numner 19 in the center of the frame.
http://www.kennedyscycles.com/fiche_section_detail.asp?section=7824&category=Motorcycles&make=YAMAHA&year=1987&fveh=208

[irishluck]

another question i wanna add to the petcock is does it really have to be oem? why im asking is cause at the shop here we have alot of petcocks, there not yamaha, but if i could find one that was to fit on the gas tank, would it work? also i found on RPM(great site by the way) a 89-93 petcock for like $25 i just need some small tips for this.

[andyb]

Can't go wrong with a big pingel, but you may require an adapter plate.

[Travis398]

As discussed before, the fj1200 engine will fit into any fj1200 as long as it has the proper frame rails, inserts and mounts.

The motor mounts changed from one generation to the next. That is why you need   "the proper frame rails, inserts and mounts".

sounds like you are missing some of the mounts for the 91'

[irishluck]

As discussed before, the fj1200 engine will fit into any fj1200 as long as it has the proper frame rails, inserts and mounts.

The motor mounts changed from one generation to the next. That is why you need   "the proper frame rails, inserts and mounts".

sounds like you are missing some of the mounts for the 91'

oh no no im not having a problem with those, i have the 91 frame rails and the front engine mounts and the front engine stay. im just really confused about the rear one on the transmission cause when i looked at the 87 diagram (which is my original bike) it showed there was a stay engine mount on the tranny or somewhere back there, i can see the diagram that well to see exactly where it goes but on my 87 all i did was take a bolt out of the rear where the tranny is and the engine drops out, i dont see a mount back there.

ill have to take some pics when i get home also to show more of what im talking about.

Got the pics to work i hope, the part circle is what im trying to figure out, on the 87 diagram i have no idea where that is, im assuming it bolts on to the tranny but ive looked on my tranny and i dont see how it unbolts.....



91 diagram

[irishluck]

Can't go wrong with a big pingel, but you may require an adapter plate.

where do i find that at?

[Dan Filetti]

Can't go wrong with a big pingel, but you may require an adapter plate.

where do i find that at?

http://www.google.com/#sclient=psy&hl=en&site=&source=hp&q=pingle+valves&aq=f&aqi=g1&aql=&oq=&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=af48742de8854925&biw=1680&bih=887

[irishluck]

Can't go wrong with a big pingel, but you may require an adapter plate.

im assuming uve used these before, which one would you recommend?
just a quick question. when it comes to petcocks i understand that there kinda like fuel pumps, they only allow a certain amount of fuel to go through the line at a time.  If i find one that will mount onto it or have to use a mounting plate of some sort, would it matter if the petcock allowed more fuel into the line then the OEM would?

i guess what im asking here is what are the factors into considering an aftermarket petcock?

[hein]

 I've got a petcock, I call it Bob. Hopefully this is not info that your interested in. A petcock is simply a shutoff valve for your fuel supply. If you'r running a fuel pump you don't need a petcock,you just need a fuel delivery system to the fuel pump. When the pump is not on there is no fuel supply to the carbs. If you are running without a fuel pump then a petcock allows you to shut off fuel to the carbs. The size of the petcock does not govern how much fuel goes into the carbs, that is controlled by the float and the needle and seat assembly. Does size matter? Yes and no. Too small a petcock could cause a fuel starvation issue but a really large petcock with a high flow rate would cause no problem. In theory you could hook up a one inch hose to the carbs without a problem since the the float would only open the needle off the seat when fuel is required and close it when not. Any petcock that allows you to drain a5 gal. fuel tank in under 15 min. is more than adequate. Hopefully this answers you question. Hein

[mikeholzer]

I've got a petcock, I call it Bob.

You know why men name their "petcocks"? Because we dont want to feel like all of our decisions are made by a total stranger.

[irishluck]

ok so what about the engine stay? in the pics i posted, thats my main focuse

[hein]

[
You know why men name their "petcocks"? Because we dont want to feel like all of our decisions are made by a total stranger.


[renamed from Bob to Irish

[racerrad8]

where do i find that at?

Use the search function of the

also i found on RPM(great site by the way)

and you may find what you are looking for...

By the way, Marsh thanks for the great site.

Randy - RPM

[irishluck]

i do think i have found what im looking for on the petcock, thanks!  i really need to figure out that rear stay engine on the tranny. Its confusing the hell out of me. When looking at the diagram online for the 87 fj1200 it shows there is some pipe like bracket. But i never did see that on the 87 when i pulled everything. only thing I've seen is a very thick bracket on the top of the tranny and i dont see how that comes off....

the diagrams above are circled with what part im talking about....

[Travis398]

As you said, you need all the motor mounts from the 91. Which you don't have.
As I assume you know they are different, and bolt to the engine different.

you need this part 3XW-15199-00-00 to make that other stuff (that you don't have) work.