RAVE Valves - Is this normal?

[SLEDBUNNYRACING]

2007 Rev 800 with lots of miles.
Can't get over 7500 RPM so I thought the first place to start might be dirty RAVES or torn billow.
Here is what I found???

Seems a little unusual to me?



I'm thinking this may be the cause of my low RPM's????



So here is the questions:
Will this cause internal damage?
What could possibly cause this?

H E L P.

 

[snopro]

From what I can see in your pictures they are extremely dirty and carboned up SBR. They may be sticking and not opening properly. Clean them up to new, install new gaskets and pin' er. What kind of oil are you using?

 

[SLEDBUNNYRACING]

From what I can see in your pictures they are extremely dirty and carboned up SBR. They may be sticking and not opening properly. Clean them up to new, install new gaskets and pin' er. What kind of oil are you using?

I'm now using Doo synthetic oil.
One rave snapped off bits a multi price rave now.

 

[snopro]

I'm now using Doo synthetic oil.
One rave snapped off bits a multi price rave now.

Thats your problem then. They must have been binding.

 

[tex78]

Also there is a updated rave guillotine.


That looks like the old ones that fall into piston.


Check Ur pistons out.


from my HTC

 

[takethebounce]

yes you have a problem.

yes that would be a good reason you can not pull peak rpm as the rave is not being pulled open properly.

As Tex mentioned, I would be curious where the broken piece is.

 

[SLEDBUNNYRACING]

yes you have a problem.

yes that would be a good reason you can not pull peak rpm as the rave is not being pulled open properly.

As Tex mentioned, I would be curious where the broken piece is.

It snapped off clean, no missing piece.

 

[tex78]

Lucky.


Do some research.


There is new brp #'s for them.



from my HTC

 

[SLEDBUNNYRACING]

Lucky.


Do some research.


There is new brp #'s for them.



from my HTC

Your correct, the system automatically have the new number, that being said I'll double check to see that I get the updated ones.
Am replacing both Raves, springs, baffles ets.

 

[tex78]

I thought everyone updated them.

I'm sure Ur are the original p.o.s ones.

from my HTC

 

[SLEDBUNNYRACING]

I thought everyone updated them.

I'm sure Ur are the original p.o.s ones.

from my HTC

Your right.

 

[SLEDBUNNYRACING]

Got the call late yesterday, all my parts are in. Will pick up today and install after work.

 

[SLEDBUNNYRACING]

Installed the new Rave's....and life is great.
Would only hit 7500 and now on 2 it's hitting 8000. On 4 it was 8400 as expected.
I'm a happy sledder and looking forward to riding Sunday at Ft Sk.

 

[SLEDBUNNYRACING]

And the snow is Awesome tonight.

 

[raceu4it]

I'm now using Doo synthetic oil.
One rave snapped off bits a multi price rave now.

And for all the kiddies looking at this thread, what oil were you using before the Doo synthetic?

 

[SLEDBUNNYRACING]

And for all the kiddies looking at this thread, what oil were you using before the Doo synthetic?

I had run a couple of brands through so it's hard to say what caused it.
I am only running Doo Synthetic now.

 

[tex78]

It's not the oil.

Bad manufacture of the gillotines themself.

Lots of 07 motors got messed up cause the valve falls to the piston.



from my HTC

 

[SLEDBUNNYRACING]

It's not the oil.

Bad manufacture of the gillotines themself.

Lots of 07 motors got messed up cause the valve falls to the piston.



from my HTC

The valves looked like Tar and had been cleaned not that long ago. Oil may have contributed.
Doo tells me they were the updated valves
I agree though, no reason for one to fail so I would lean toward mfging.
But I'm back in business for a great weekend of local riding.

 

[imdoo'n]

interesting to see what oil alright, looks like cheap mineral oil. (15-40)