Had some general questions you guys probably know the answers to.
Where are synchros located & how do you engage 1st gear without them?
Is there a rule-of-thumb for cornering speeds? Fir exapmle, 2x the recommended posting. (Im not there yet but am practicing and dont want to exceed physical tirelimits from ignorance)
Recommended rears? I just installed a Pilot front.
Recommended oil? Is Yamalube sufficient with regular changes?
Importance of jetting?
Loss in mpg after #40 upgrade?
Why are the jets variable? How does where they sit in the carb affect fuel delivery?
(popcorn) hi
The
Quote from: theLeopard on April 13, 2015, 06:29:10 PM
Had some general questions you guys probably know the answers to.
Where are synchros located & how do you engage 1st gear without them?
There are no synchros. If there were, they'd be in the transmission
Is there a rule-of-thumb for cornering speeds? Fir exapmle, 2x the recommended posting. (Im not there yet but am practicing and dont want to exceed physical tirelimits from ignorance)
All depends on the particular roads authority and their standards when posting corner suggestions.
Note: These posted advisories are usually intended for heavy trucks.
Temperature, level of moisture, choice of tires, your skill and courage level all affect potential cornering speeds.
There is no limit on ignorance
Recommended rears? I just installed a Pilot front.
On OEM rear wheel? Lots of discussion on this topic - Search
Recommended oil? Is Yamalube sufficient with regular changes?
Yes. So is 'diesel' oil. So are Synthetic Motorcycle oils. You won't have the bike long enough to see differences in oil protection properties
Importance of jetting?
Allows the engine to operate (close to) the proper stoichiometric ratios with both efficiency and power
Loss in mpg after #40 upgrade?
Depends on how much time you spend at or just slightly above idle
Why are the jets variable? How does where they sit in the carb affect fuel delivery?
To provide correct fuel/air ratios. Read a carburetor theory manual
Hope that helps your understanding :-)
Arnie
What was all that business the last few days about synchros?
Autos only? Our scooters operate on plate friction, yes?
Also, how long do you figure the bike can last?
Why wont i have it long?
300,000 mile kinda thing?
You've helped my understanding greatly, Arnie. Thanks mate!
Im reading some introductory theory.
In a 4stroke, like my FJ, there are an even number of cylinders which fire alternately in a linked system so there will always be a power stroke coupled with an intake stroke yes?
And the exhaust/compression stroke is powered by mechanical inertia?
Are jets the "venturi" chokepoint in my FJ carb?
Are float needles the functional part that metes the air being mixed with the fuel flowin through the jets for combustion?
Oh.... Jamming the throttle from nearidle is really hard on the bike.....
:blush: :empathy3:
Prevailing symptom of running 'rich'?
Also, the flaots arent for air. I shoulda remembered that from when i rebuilt my carbs but im trying to unpuzzle this manual.
Quote from: theLeopard on April 13, 2015, 09:56:56 PM
Also, how long do you figure the bike can last?
Why wont i have it long?
300,000 mile kinda thing?
You've helped my understanding greatly, Arnie. Thanks mate!
"Also, how long do you figure the bike can last?" That is up to the owner 100%.
"300,000 mile kinda thing?" There are FJ's out there with over that many miles. More than a few with over 200,000 miles.
"Why wont i have it long?" Best case scenario. You will get tiered of it and sell it.
Kurt
Yeah thats why im asking why he said that.... :sorry:
Are the air mixture screws located in the carb bowl or elsewhere?
If my bike limits at 100mph is it because my main-well tube is clogged or is a governor installed on my machine?
Quote from: theLeopard on April 13, 2015, 11:32:15 PM
If my bike limits at 100mph is it because my main-well tube is clogged or is a governor installed on my machine?
When you say limits, it it cutting in and out like a rev limiter, or just won't push any faster?
Just won't push.
I hit the governor in my accord & governors produce a bouncing effect when you reach the programmed limit.
Theres no bounce, it just wont continue accelerating.
Quote from: theLeopard on April 13, 2015, 11:32:15 PM
If my bike limits at 100mph is it because my main-well tube is clogged or is a governor installed on my machine?
IMO. For whatever the reason. I suggest you consider it a gift from God. Helping to keep you alive. With that good night.
Kurt
Quote from: theLeopard on April 13, 2015, 11:43:05 PM
Just won't push.
I hit the governor in my accord & governors produce a bouncing effect when you reach the programmed limit.
Theres no bounce, it just wont continue accelerating.
Do the revs climb but speed does not? Possibly clutch....
Quote from: yamaha fj rider on April 13, 2015, 11:44:26 PM
Quote from: theLeopard on April 13, 2015, 11:32:15 PM
If my bike limits at 100mph is it because my main-well tube is clogged or is a governor installed on my machine?
IMO. For whatever the reason. I suggest you consider it a gift from God. Helping to keep you alive. With that good night.
Kurt
youre a good man.
Good night, friend.
Quote from: FJmonkey on April 13, 2015, 11:45:38 PM
Quote from: theLeopard on April 13, 2015, 11:43:05 PM
Just won't push.
I hit the governor in my accord & governors produce a bouncing effect when you reach the programmed limit.
Theres no bounce, it just wont continue accelerating.
Do the revs climb but speed does not? Possibly clutch....
the revs dont climb the bike just limits there.
If the mainwell tubes are jammed then im not pushing enough fuel to climb speeds.
Im running stock jets, perhaps the stock jets only push enough fuel for 100mph?
Quote from: theLeopard on April 13, 2015, 11:57:20 PM
the revs dont climb the bike just limits there.
If the mainwell tubes are jammed then im not pushing enough fuel to climb speeds.
Im running stock jets, perhaps the stock jets only push enough fuel for 100mph?
The stock FJ will go more than 100MPH.... Start checking the simple things, like the the things most recently changed/touched....
The manual im reading is specifically for the rochester 2barrel.
Is that the type used on my FJ?
Its delving into the "power system" which delivers addition fuel when the demand exceeds jet capacity.
Would likely be better served reading an FJ specifoc manual for this portion than a generic (though still informative) manual nonspecific to my particular scooter.
I havent done any modifications & the bike has run this way for as long as ive owned it.
Stop feeding the troll
Quote from: theLeopard on April 14, 2015, 12:02:20 AM
The manual im reading is specifically for the rochester 2barrel.
Is that the type used on my FJ?
Its delving into the "power system" which delivers addition fuel when the demand exceeds jet capacity.
Would likely be better served reading an FJ specifoc manual for this portion than a generic (though still informative) manual nonspecific to my particular scooter.
I havent done any modifications & the bike has run this way for as long as ive owned it.
What is your gearing? Front and rear sprocket? I don't recall seeing anything odd on your bike, but a smaller front and larger rear will limit top speed...
I couldn't say, mark.
I presumed it was fullystock when i bought it but ill add that measurement to my checklist for tomorrows maintenance.
Quote from: theLeopard on April 14, 2015, 12:02:20 AM
The manual im reading is specifically for the rochester 2barrel.
Is that the type used on my FJ?
Sounds like you are reading a FJ Holden manual....
:lol: :lol: This is the thread that just keeps on giving :lol: Love it!
Quote from: Pat Conlon on April 14, 2015, 12:08:54 AM
Stop feeding the troll
Pat, you may want to print this out and frame it.
I agree with youDon't go gettin' a swelled head now, ya hear?
Noel
I'm sorry, I'm reading this thread and cannot stop laughing. :flag_of_truce:
Having no knowledge of the guy, I can't tell if The Leopard means well or is just foolin with us. :unknown:
I think Arnie has the best quote of the year in his response. I almost spit my coffee out my nose! :rofl2:
Quote from: Arnie on April 13, 2015, 09:29:16 PM
There is no limit on ignorance
Just an FYI, I think he means well. I met him, helped him with minor repair. Just in a tough place, at the bottom of the learning curve with FJs and likely motorcycles in general. I think using the search function more and asking general questions less will help this thread....
Well, the way i see it I'd rather be bare assed like a babe
than limit my learning.
Mostly i want to get in there and fiddle with stuff but the books are smart.
And i need a second bike & a garage to really do that.
There is no governor on the FJ.
Bikes intended for some markets had restricted intake manifolds which would limit maximum output power. Thus these bikes would only get to maybe 140 instead of 155mph or so.
My comment about you won't have your bike long enough to wear it out was possibly a bit snide, but I've had my FJ for 18years now, its my primary bike, and I (only) have about 150,000 kms (~100,000 miles) on it. Others I know of have double that. Change the oil regularly, keep it in tune and it will last a long long time. One reason is that most of the time, the engine is loafing.
My best advise to you is to go to your local library (or online equivalent) and get books on, Theory and operation of internal combustion engines, and Theory and operation of carburetors.
Maybe there is someone on the list willing to take the time to provide you with an education, but its not me. Get some knowledge and if you still have questions, ask. You're starting from point 0, and we all did that, but you need to exert yourself and not expect others to take you by the hand from that place.
Cheers,
Arnie
Quote from: theLeopard on April 14, 2015, 10:25:18 AM
Well, the way i see it I'd rather be bare assed like a babe
than limit my learning.
Mostly i want to get in there and fiddle with stuff but the books are smart.
And i need a second bike & a garage to really do that.
By not using the search function, you are limiting your learning. BIG TIME!!!!! By using one of the best tools of the forum, you will learn more faster than you can asking questions. Go there first and check the files section. The time spent asking questions is better spent reading the answers you are looking for.
Kurt
Have to agree the search function is your friend for most things FJ related on here. From what I see people are happy to answer questions but can resent answering multiple questions that seem to show little in the way of initiative.
In other words, I would advise finding out stuff for yourself, both on here and elsewhere, and maybe ask only the important questions you really need to ask on here - otherwise people will assume you are a wind up merchant...even if that is untrue.
Just my thoughts.. :shok: :good2:
Heard. I'll try some hunting when questions arise.
Like burnt oil. I recall someone saying rejetting will help the motor run at lower temps.
Quote from: theLeopard on April 14, 2015, 07:30:51 PM
I recall someone saying rejetting will help the motor run at lower temps.
It depends on where the jetting is now. Richer "more fuel" runs cooler. My suggeston for you is in the files section. Look up carb cleaning and follow those instructions. Order from RPM the O ring and screw kit. This is where your problems are most likely to be. Don't worry about jetting until after is is running correctly.
Kurt
I think you need to cut down on the drinking.
Or at least don't ask questions when drinking.
Quote from: yamaha fj rider on April 14, 2015, 09:18:57 PM
It depends on where the jetting is now. Richer "more fuel" runs cooler. My suggeston for you is in the files section. Look up carb cleaning and follow those instructions. Order from RPM the O ring and screw kit. This is where your problems are most likely to be. Don't worry about jetting until after is is running correctly.
Kurt
Thanks Kurt.
Im currently browsing "Carb cleaning by Dave Raforth" in the archives.
I bought anf installed Randys ORing kit awhile back (maybe 6months) but im planning another cleaning soon. Will probably run Seafoam once or twice when i find the shop time.
Currently my machine is at factory settings.
Its developed a faint putter at idle & i want to get everything sorted and probably rejetted before i develop any detonation problems. Still planning on having the piston seals replaced but thats my nestegg project - funds are always limited.
Quote from: FJ_Hooligan on April 14, 2015, 10:31:22 PM
I think you need to cut down on the drinking.
Or at least don't ask questions when drinking.
Yo. I dont drink often but i overindulge. Sorry about that :drinks:
FTR this thread was posted sober as a stone.
Being fairly new here and having asked some stupid questions.. I stopped and used the search, it's all there just gotta look for it..Oh wait Pat I have a clutch question..JK
Randy,
Do you sell the little oclamp for the linkage between the petcock & fuel filter?
There are two. The clamp fitted to the filter is properly sized but the clamp fitted to the petcock is too large. Idk what size to buy & i cant afford a parts manual atm (sorry :sorry: ) but i was reading up on safetywiring 80s models & while that tube breaking loose is unlikely the rubber mount for my fuel filter is nearly wasted.
Quote from: theLeopard on April 15, 2015, 02:34:25 PM
Randy,
Do you sell the little oclamp for the linkage between the petcock & fuel filter?
There are two. The clamp fitted to the filter is properly sized but the clamp fitted to the petcock is too large. Idk what size to buy & i cant afford a parts manual atm (sorry :sorry: ) but i was reading up on safetywiring 80s models & while that tube breaking loose is unlikely the rubber mount for my fuel filter is nearly wasted.
If this is a question for RPM Randy you might want to send him an email, he hasn't been logged onto the forum for months now. If it is for the other Randy I dont think he is around much either anymore