I actually didn't think you were upset with anyone. The only concern I had was that if you wanted to talk with them about it, they probably wouldn't see your question on this forum. I didn't want you to think they were ignoring you. [img]i/expressions/face-icon-small-smile.gif[/img]

I know what you are saying about not being mentally all there after surgery, lol. I had 7.5 hrs of reconstructive surgery back in '01. I was still suffering from the effects of anesthesia 2 WEEKS after the surgery! Not only that but i was on Percaset (Sp?). I thought i was on my game but my wife said she had to watch me like a hawk because my decision making was close to that of a 5 year old, lmao.

Anyway, I hope your recovery is complete and quick!

Ron [img]i/expressions/face-icon-small-smile.gif[/img]

 

OMR, they looked like on the second photo they added welded aluminum back in the heads and reground?

 

Erbbe,

I want to do a head first with a final 11.5 to one compression.
I want to maintain the use of two spark plugs.
Thus the quench pad that is already in the head will have to stay. This pad is what causes the turbulence so that the burn is accelerated from the center plug to the outside wall. This makes the burn rate balance with the second plug that is already near the other outside wall.
The concern is should I make two small quench pads or only one large cloverleaf pad. If I made two large cloverleafs, then I would have too high of a compression.
So I am looking for anyone to share their thoughts on which way to go.

OMR

 

I dont blame you, running pump gas makes it easier to run off and go play! No Im very interested in this quench thread!

 

Gary,

Could you offer up a little more info on Quench heads and how yours work? When you said your quench head was good for 3 hp, how did you come to that conclusion, what size motor and how much did it make before the quench head?

Also, which piston were you using when you dynoed the quench head?

With a little more info, it might be you are the go-to guy for these heads.[img]i/expressions/face-icon-small-wink.gif[/img]

Let me know,

Ron

 

We modify the shape of chamber and use a special (propritary) piston design. HP gain of 3 HP on dyno 11 1/2 piston, pump gas!!!

 

Thanks for responding Gary. I know there are a lot of people considering this technology now in our world because it has seemed to be successful in other racing venues.


How do you go about getting imperical data on this? Do you dyno a motor that is 11.5:1 and get 50 hp then pull the head, modify it and install the modified piston, all other variables remaining equal and re-dyno the motor to get 53 hp?

Thanks,

Ron

 

TVI HEAD:

http://my.50below.com/sitebuilder/pu...s/racehead.jpg

PAMI HEAD:

http://www.team-pami.com/images/Bomb...s7602gross.jpg


They are very simular and may produce a few more HPs, but they not not a true quench head.

They have a modified squish head chamber and allows the use of a piston that forces turbulence to the outside for a faster burn.

 

Do those 2 flat spots on the sides help?? Race Head

 

The three machined surfaces in the combustion chamber are not flat.
I am guessing that they located off the center spark plug hole and the chamber turned at a 45 degree to convert the pentroof chamber to be closer to a hemi chamber.
The piston is tapered to match the angle of the chamber. This becomes a squish chamber and allows for a lower dome in the middle of piston. Flow over piston is improved and with some squish, a little better burn.
This has been used for some time and does have merit, but is not a true quench head.