Yamaha RZV500R <PULSAR> engine project

[wolfgangh]

I have full respect of your skills and creativity. You nee to do a leakdown test before installing the engine in the frame, the machined reed cages are prone to leak where they meet the engine cases (machining tolerances). Use red HTV silicon here, not too thick but make sure the silicon seam is not disrupted anywhere ( dont know how to explain in proper english).
Maybe we can meet sometime, I travel to Ukraine sometimes, where are you located?

[Ax-Racing]

Wow !

interesting topic
thanks for citation, i will follow your progress

[Pasha]

I have full respect of your skills and creativity. You nee to do a leakdown test before installing the engine in the frame, the machined reed cages are prone to leak where they meet the engine cases (machining tolerances). Use red HTV silicon here, not too thick but make sure the silicon seam is not disrupted anywhere ( dont know how to explain in proper english).
Maybe we can meet sometime, I travel to Ukraine sometimes, where are you located?

Thanks for share your skills and your help. I'm living in Kharkiv. It's 500km from Kiev.

[silverstrom]

Brilliant work.

The level of skill and the engineering abilities of the members of this forum never ceases to amaze me.

[Pasha]

It's easy to be happy )))))

[tacky1]

It's easy to be happy )))))

lol. One happy owner
Keep up the good work.

[Mike Cichetti]

Amazing work! I'm super impressed.

[Pasha]

Dear fellows!! Need YOUR authoritative advice. Is it awful if piston pin will open scavenging to exhaust during moving downwards???

[MK]

In that case I'd check it with a simulation.
EngMod 2T gives you pressure values vs crank angle so you could see where the flow would direct to.

On the other hand its only a few degrees where that bypass is open - I doubt it'll yield to a reasonable mass flow, especially at higher rpm.
It may influence low end though.

[Pasha]

In that case I'd check it with a simulation.
EngMod 2T gives you pressure values vs crank angle so you could see where the flow would direct to.

On the other hand its only a few degrees where that bypass is open - I doubt it'll yield to a reasonable mass flow, especially at higher rpm.
It may influence low end though.

So, may be I shouldn't warry...?! Exhaust boosts are closed teel YPVS opens....

[WVWRZ500N]

Pasha,

You do not want there to be a short circuit between the aux exhaust and the main transfer port via the wrist pin. You will need to keep the aux closer to the main exhaust port or raised floor to keep this from happening. Issue is the incoming charge will short circuit into the aux e-port and you'll lose a lot of performance.

Regards,
Bill Wilson
Wilson Performance
Lee's Summit, MO
http://www.wilsonperformance.net" onclick="window.open(this.href);return false;
Member RZ500 Owners Group #573
816-377-3185
WVWRZ500N@aol.co

[ixe13]

What about end plug ?

[Pasha]

Pasha,

You do not want there to be a short circuit between the aux exhaust and the main transfer port via the wrist pin. You will need to keep the aux closer to the main exhaust port or raised floor to keep this from happening. Issue is the incoming charge will short circuit into the aux e-port and you'll lose a lot of performance.

Regards,
Bill Wilson
Wilson Performance
Lee's Summit, MO
http://www.wilsonperformance.net" onclick="window.open(this.href);return false;
Member RZ500 Owners Group #573
816-377-3185
WVWRZ500N@aol.co

Yes. Fixed it. How do YOU think, is it enough 1.5mm overlap???

[WVWRZ500N]

Pasha,

You do not want there to be a short circuit between the aux exhaust and the main transfer port via the wrist pin. You will need to keep the aux closer to the main exhaust port or raised floor to keep this from happening. Issue is the incoming charge will short circuit into the aux e-port and you'll lose a lot of performance.

Regards,
Bill Wilson
Wilson Performance
Lee's Summit, MO
http://www.wilsonperformance.net" onclick="window.open(this.href);return false;
Member RZ500 Owners Group #573
816-377-3185
WVWRZ500N@aol.co

1.5mm is minimum. 3mm would be much better.
Yes. Fixed it. How do YOU think, is it enough 1.5mm overlap???

[Pasha]

Pasha,

You do not want there to be a short circuit between the aux exhaust and the main transfer port via the wrist pin. You will need to keep the aux closer to the main exhaust port or raised floor to keep this from happening. Issue is the incoming charge will short circuit into the aux e-port and you'll lose a lot of performance.

Regards,
Bill Wilson
Wilson Performance
Lee's Summit, MO
http://www.wilsonperformance.net" onclick="window.open(this.href);return false;
Member RZ500 Owners Group #573
816-377-3185
WVWRZ500N@aol.co

1.5mm is minimum. 3mm would be much better.
Yes. Fixed it. How do YOU think, is it enough 1.5mm overlap???

Thanks. Damn, boosts couldn't be big enough as I thought.