Timing Plate Question

[eddohawk]

Hi there

It would be appreciated if someone could help me with these queries with my 1990 model

When setting TDC do I line up the letter 'T'' to the stationary pointer of the 'line'' just below it on the edge of the timing plate?

Also my timing plate has the letter ''F'' stamped on it plus a couple of other lines above it in addition to the line mentioned above. Does the 'F"' refer to firing or something else.

Thanks

Mark the Moron

[Travis398]

sounds like you have it all figured out, The T is the top dead center mark when at the center of the pick up coil,

The F is the firing range when using a timing light.

[eddohawk]

Thanks Travis

Not sure if I have everything figured out I still have a lot to learn! So I am correct if I line up the actual letter ''T'' rather than the line just below the letter on the edge of the timing plate it for TDC?

My engine has been previously dissassembled by some one else so I just wanted to be sure.

[Travis398]

Mark, if recall correctly there is 3 lines, 2 little lines for the firing range and a longer line for TDC.
I think the T is near the line.
if this is not the case than you should post up a pic, with any luck you will start up a heated debate.

[eddohawk]

No worries will do. I think this is a good question for newbs as the Clymers manual is ambigous in its description of the 'T Mark'. Do they mean the actual 'letter T' or the line just below it on the edge of the timing plate,  as being the TDC mark. This probably makes stuff all difference when doing a valve clearance check but when reinstalling cams like I'm doing its important. In any event I'm going to try and locate a piston stop and degree plate to get the true tdc.

[eddohawk]

Have had a chat with a Yamaha mechanic on my newb tbc question.

He confirmed the longer line just below the letter T is the tdc sight mark. He also said that the place to line it up is the join in the crankcase which more or less corresponds to the pick up coil mark.
I asked him about also using a piston stop and he said not to bother. He has installed heaps of cams on FJ's and said that the timing plate tdc settings are always accurate enough.

Once again apologies for these lame newb questions but just in case their are any other newbs out there this may help.

[andyb]

I asked him about also using a piston stop and he said not to bother. He has installed heaps of cams on FJ's and said that the timing plate tdc settings are always accurate enough.

Once again apologies for these lame newb questions but just in case their are any other newbs out there this may help.

If you're building something and screwing with tolerances throughout (i.e., building a race motor or the like) then take the extra few minutes and use a positive stop to find TDC.  Takes ten minutes and lets you start at exactly right, rather than close.  Doesn't really matter if you're just using stock stuff and getting things back to where they started.

Any question that hasn't been asked is usually a good one.  Doesn't matter, as the search function goes sadly underused by some

[racerman_27410]

Any question that hasn't been asked is usually a good one.  Doesn't matter, as the search function goes sadly underused by some

so you're saying if anyone asks a previously asked question then they are stupid ?

well i got some news for you mister smartass.... thats not what this club is all about.

we HELP people and if that means answering the question a THOUSAND times then thats the way it is.

if people use the search function then great.... if they dont then thats alright too.

if you dont like it then just STFU and dont post anything.

Besides being unfriendly, your rude comments clutter up our nice clubhouse with big steaming piles of your shit.



KOokaloo!

[Yamifj1200]

Any question that hasn't been asked is usually a good one.  Doesn't matter, as the search function goes sadly underused by some

so you're saying if anyone asks a previously asked question then they are stupid ?

well i got some news for you mister smartass.... thats not what this club is all about.

we HELP people and if that means answering the question a THOUSAND times then thats the way it is.

if people can use the search function then great.... if they cant then thats alright too.

if you dont like it then just STFU and dont post anything cause it clutters up our nice clubhouse with big steaming piles of your shit.


KOokaloo!
[/quote



I remember years ago when this group was formed, that owners helped each other with out attitude. Andy perhaps if your not interested in helping someone, drop it or stfu..

Eric M

[Travis398]

I think this is a good question for newbs as the Clymers manual is ambigous in its description of the 'T Mark'.

I think a few people have reported mistakes in the clymer manual.

Here you can see the 3 lines I was talking about.

[eddohawk]

I think this is a good question for newbs as the Clymers manual is ambigous in its description of the 'T Mark'.

I think a few people have reported mistakes in the clymer manual.

Here you can see the 3 lines I was talking about.

Hi there

Thanks for posting the pic, yes....I see what you were referring to in terms of the TDC mark. The Clymers manual was a tad confusing for an over analytical accountant like me! Perhaps us accountants should stick to what we do best.....opening the drawers, looking between the sheets...and examining the figures.

Regards

Mark

[Klavdy]

Any question that hasn't been asked is usually a good one.  Doesn't matter, as the search function goes sadly underused by some

so you're saying if anyone asks a previously asked question then they are stupid ?

well i got some news for you mister smartass.... thats not what this club is all about.

we HELP people and if that means answering the question a THOUSAND times then thats the way it is.

if people can use the search function then great.... if they cant then thats alright too.

if you dont like it then just STFU and dont post anything cause it clutters up our nice clubhouse with big steaming piles of your shit.


KOokaloo!




I remember years ago when this group was formed, that owners helped each other with out attitude. Andy perhaps if your not interested in helping someone, drop it or stfu..

Eric M

Don't worry about him mate, he's just an ignorant cunt.

[Travis398]

Mark I think I found what the clymer manual was referring to.

here is the Rotor my 85 takes notice the T is lined up with the line.

[weymouth399]

 

[eddohawk]

Mark I think I found what the clymer manual was referring to.

here is the Rotor my 85 takes notice the T is lined up with the line.

Hi there

Thanks heaps for the info I really do appreciate your help! So it seems the Clymer directions were referring to the slightly older model than my 90!  I'll have to take extra care when referring to the Clymers from now on. I dont know if you saw my post on the Clymers instructions on the install of the timing chain tensioner but that was confusing as well. The Clymers directed to install the tensioner with the tension rod almost fully extended which wasnt correct.