Nope.
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Yam_Tech314's official build thread
- Thread starter G_YamTech_314
- Start date
Another hint... what's the difference between a 'C' and a 'D' tuning fork?
You got me baffled. Explain please... Or show me where to read lol
Does one spring act as a dampener to reduce overall vibration?
When a spring (or any object) reaches it's resonant (natural) frequency, the vibration is almost self sustaining... just like a tuning fork. If it's vibrating, it can't hold the valve closed... valve float results. If they're two different sizes... inner and outer, they have two different resonant frequency's.... one will always hold the valve closed.... no valve float.
Makes a lotta sense when you put it that way... I wasn't thinking outside the box enough for that one... It's always crazy to see how much science goes into all of this. Not nearly as simple as building a puzzle... I guess anyone can put a motor together, but not everyone can do it well... To do it well is to understand. Thanks for the info Jim. Always a pleasure to learn new things. I'm glad you challenge me instead if just giving me information... It won't be forgotten as easily now that I had to fight for the info lol.
So do we have any thoughts on my parts cache? Think it'll do the trick?
So with no real "tight spot" on these springs, is there any way of really figuring out which way is up?
Not unless they're marked
If there was you'd be able to see it...
Block the head up on some wood so the valves are free to move.... take a rubber mallet and whack the ends of the valve stems a couple of times. That's an old school method of making sure your keepers are correctly installed. Lay a rag on 'em first so you don't have to hunt 'em if they go flying. If a keeper wants to go airborne, you want it to happen now so's you can fix it.... instead of when you fire it up.... and gotta start all over.
Will do. I was careful to make sure the keepers were evenly spaced. I know it's not necessary, but I'm picky.
Should be able to build the rocker box up tonight. I am aiming to have the motor test ready by no later than the end of april.
Should be able to build the rocker box up tonight. I am aiming to have the motor test ready by no later than the end of april.
Couldn't tell by the picture, but did you remember to put valve guide seals on?
Yes sir! Assembly lubed the hell outta each seal to try not to tear em. I felt each one kinda snap into place so I think I'm all set for the head. Assembling rocker box tonight if all goes well!
Some cam chain tips - DO NOT attempt to break the chain using the small pin provided with your breaker/rivet tool, it will just bend or break. There's no need to use a breaker tool on this small chain. Just grind off the riveted heads on the link you wish to remove and tap it out with a pin punch .....
An issue I encountered when using the riveter is that the head of the rivet pin wants to walk off the chain pin as you tighten it down. I found that tapping a slight "X" cut into the head of the chain pin with a small, sharp chisel holds the rivet pin centered so it mushrooms out the chain pin evenly all around .....
I finish the job by hand peening the pins with a small ball peen hammer .....
An issue I encountered when using the riveter is that the head of the rivet pin wants to walk off the chain pin as you tighten it down. I found that tapping a slight "X" cut into the head of the chain pin with a small, sharp chisel holds the rivet pin centered so it mushrooms out the chain pin evenly all around .....
I finish the job by hand peening the pins with a small ball peen hammer .....
I will keep that in the forefront of my brain.
The issue I have encountered today is that of an o ring replacement...
The shouldered sleeves that lock the rocker shafts in place have red I rings in them, mine have seen better days but the o rings I have found that are CLOSE to the right size are smaller... Do these swell overtime, and how/where will I find ones that work if the small black ones pictured do not...
The issue I have encountered today is that of an o ring replacement...
The shouldered sleeves that lock the rocker shafts in place have red I rings in them, mine have seen better days but the o rings I have found that are CLOSE to the right size are smaller... Do these swell overtime, and how/where will I find ones that work if the small black ones pictured do not...
If they're the wrong type they will.
You want buna-N or nitrile o-rings ... the correct size.
I'd imagine the red O-rings are stockers... Yamaha sells them. Damn shame I gotta wait to build it for justa couple of o-rings. I can't help but wonder what these four black o-rings are for if not for this...
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