http://www.coatesengine.com/csrv.html

Please spent some time surfing this site and post your opinions.

I think the CSRV system has the potential to revolutionize the automotive industry.

 

wow that sounds like a pretty badass head!

 

no Vtec, no respect

 

Thats crazy as crap. Look promising.

 

That really is a bad *** design,but they have been working on the design ever since the 70s,this recent decade is when they actually got it working right.

I used to work for the guy who is doing all their motec jobs on the cars with the heads.He said the head is sick,he seen their full race motor swing to like 16000rpms.

 

.....that is pretty neat.

retrofit to b-series anyone?

 

The inherent design limitations of the poppet style valve require that valve springs become stiffer if the engine is going to be revved higher. Neccessarily this means more parisitic draw from turning the cams and compressing said springs. The CSRV system is extremely LOW resistance, therefore allowing the engine to be revved more freely (and higher due to lack of valve floating).

Besides, isn't there a variable valve timing system that advances or retards the entire cam relative to the crank? Wouldn't it work with CSRV?


Modified by 87turdR at 12:37 AM 1/6/2005

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spectacle &raquo;</TD></TR><TR><TD CLASS="quote">no Vtec, no respect </TD></TR></TABLE>

You must be what I know around here as a "riceboy"

Read about this, this is the greatest improvment ever. It shortens your head height (lower c.o.g.), uses no oil, and with direct injection could get insanely good gas mileage, and that's just the start.

I suggest you read

 

start of a new evolution...i love the way they designed it pretty badass

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 87turdR &raquo;</TD></TR><TR><TD CLASS="quote">I think the CSRV system has the potential to revolutionize the automotive industry.</TD></TR></TABLE>

 

It's like uncapping the cyl the recapping it.Total exhaust removal.Its bettter then Vtech.No need for high lift cams.

 

this isn't the best engine improvement ever simply because it can't help a rotary....

 

To me a lot of the info about the this idea is contradictive to itself. Are there anymore resources about this?

 

damn, i wonder how old the videos were? Does anyone know if they went public?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">this isn't the best engine improvement ever simply because it can't help a rotary.... </TD></TR></TABLE>

i think nothing can help a rotary,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Digital MP &raquo;</TD></TR><TR><TD CLASS="quote">To me a lot of the info about the this idea is contradictive to itself. Are there anymore resources about this?</TD></TR></TABLE>

1) What did you find contradictive?
2) This is the best site for technical data since the build em' DUH

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aggressivemotorsports &raquo;</TD></TR><TR><TD CLASS="quote">

i think nothing can help a rotary, </TD></TR></TABLE>

lol

 

The best engine improvment ever.... VTaK y0!!!

 

How much do these usually cost, and how much would it be to put into a 99 accord and will I gain hp or anything.. Please include details so I know the benefits of having something like this.

 

This is a badass innovation for sure

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by twobit &raquo;</TD></TR><TR><TD CLASS="quote">How much do these usually cost, and how much would it be to put into a 99 accord and will I gain hp or anything.. Please include details so I know the benefits of having something like this.</TD></TR></TABLE>

Are you ******* joking?? Can you read?

 

Wow, that is pretty ******* cool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlacoy82 &raquo;</TD></TR><TR><TD CLASS="quote">Wow, that is pretty ******* cool. </TD></TR></TABLE>

For sure

 

Yeah that's way cool. Besides the fact of amazing air flow, the surfaces are constantly rotating to reduce heat, letting you run a higher compression. Nice!

Also, a variable valve timing mechanizm could easily be added, since the whole assembly is still driven by the crank through a timing belt. But since the flow characteristics are drastically different than the standard poppet valve design, I wonder if it would be as beneficial?

No worries about floating valves. 13k rpm runs would be no problem. Very nice.

Super low friction, so there's less drivetrain power loss, also quieter operation. Awesome.

Only problem is it's always going to be using the same flow profile for the entire powerband... So it's still kinda like having a non-vtec camshaft, it's design will only have a sweet spot for a selected rpm range, while all the rest of the rpms won't be up to their full potential. Hmmm.... Who knows. It would definitely help if that website actually showed a more detailed diagram of how it works, with plenty of detailed pictures describing each and every attribute explained - until then, we can only assume certain things.

All in all, I really like it! Now you have to ask if this is any better than an electronic solenoid controlled poppet valve - infinite lift and duration variances, and no need to turn the valvetrain at all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MrTodd &raquo;</TD></TR><TR><TD CLASS="quote">

All in all, I really like it! Now you have to ask if this is any better than an electronic solenoid controlled poppet valve - infinite lift and duration variances, and no need to turn the valvetrain at all.
</TD></TR></TABLE>
Yes, they are better in many ways, Aside from the obvious adjustability factor, yous till have the hot exhaust valve and the head of the valve still impedes airflow, and the reliability of the solenoids come into question.

Also how are the valve stems lubricated? We studied this system briefly at Wyotech, but didn't get into that kind of detail.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">

retrofit to b-series anyone? </TD></TR></TABLE>

That would be hott