[NHRASuperStock455SD]

What we have so far. We have been over 500 in the test port, but Tony says some flow we dont want, so we will see what his final number is. I think we need a bigger valve but Tony is very conservative on valve size.

This is with all valve train intact. Exhaust is at 300, we are doing some testing on milling the exhaust flanges to the valve cover like the old days. The cutaways are stock castings.

This is the first port done with the new head porters head. The RAV is 1/2 shorter than all the competition.

[Half-Inch Stud]

STUNNING.

[cgeise]

Where are the push rod tubes ?? and better not show that to anyone - the plug is to close to the exh. --- hehehe - Also - -I keep hearing Tony dont care about no stinking flow bench and CFM -- whats the deal.

[J.C.you]

Originally Posted by cgeise

Where are the push rod tubes ?? and better not show that to anyone - the plug is to close to the exh. --- hehehe - Also - -I keep hearing Tony dont care about no stinking flow bench and CFM -- whats the deal.

i had Tony move the pushrods out of the port. Any more D***A** questions besides the ones you asked?

[cgeise]

Originally Posted by J.C.you

i had Tony move the pushrods out of the port. Any more D***A** questions besides the ones you asked?

maybe you dont understand sarcasim -- being from lesiana and all

[J.C.you]

Originally Posted by cgeise

maybe you dont understand sarcasim -- being from lesiana and all

yeah, here is some for you, i agree with Baker, someone must have dropped that 6 second car out of the sky in your driveway. you sure as he*l, didn't build it. heehee

[NHRASuperStock455SD]

Originally Posted by J.C.you

i had Tony move the pushrods out of the port. Any more D***A** questions besides the ones you asked?

I really left this up to Tony. He was on the fence either to move it or not. When we put the push rod in the center, we can gain flow on the sides by increasing the port width. We also can make the port bigger with the push rod in the middle. He was happy in the beginning, but at the end he wasnt as sure.

I fundamentally disagree with moving the pushrod out of the way. Cross Sectional area on those engines are way more important than flow. We could only achieve the additional CSA by squaring off the port.

CSA(min) = bore x bore x stroke x rpm x 0.0035/620
= 4.5 x 4.5 x 4.785 x 8000 x .0035/620
= 4.46 sq inches minimum.

This limits this engine to low 8000 RPM with a minimum port. Our next engine is the 406 RAV engine @ 11,000 RPM. Valve train lined up straight I believe is a very good thing. A 5.750 length valve and pushrods in the 8.200 length range advantage RAV.

[BruceWilkie]

Originally Posted by cgeise

Where are the push rod tubes ?? and better not show that to anyone - the plug is to close to the exh. --- hehehe - Also - -I keep hearing Tony dont care about no stinking flow bench and CFM -- whats the deal.

Real funny Curt... are you from Rhode Island?

I think that the plug location shown looks a heck of a lot better than the PP head. Havent seen a cut away or raw casting to say with 100% certainty. The plug boss doesnt seem to be hugging the exhaust port wall as tightly and appears to be somewhat better retracted from the exhaust valve.

The plug shell's job isnt just a place to put threads... it has to be able to pull heat away. The tip itself is exposed to pretty much the same temp during combustion, its the ability to pull heat(heat range) that counts.

The exhaust side of the chamber itself is hotter than the intake side. It sees both combustion heat and exhaust heat. The intake side sees more or less same combustion temp at plug tip but is cooler there, due to intake charge being cooler. The closer the plug boss hugs the exhaust port the harder it becomes to cool the plug.

Would this head be better if the plug was on the colder side of the chamber? Probably, if you got the room to do so and not wash the tip with fuel. The tip certainly can face the exhaust valve area.

We wouldnt have heat ranges if all this stuff didnt matter.
FWIW In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70°C to 100°C from the combustion chamber. (Thats 158 - 212 F for those that want to know)

Plenty of plug info here... http://www.ngk.com/search_char.asp?s...nufacturerID=1

When coldest plug isnt cold enough you have to reduce temperature.(lower compression or richen mixture or reduce advance or additional cooling capacity or any combination of those) That costs you horsepower. Ignoring it can cost you a motor.

[NHRASuperStock455SD]

Originally Posted by cgeise

Where are the push rod tubes ?? and better not show that to anyone - the plug is to close to the exh. --- hehehe - Also - -I keep hearing Tony dont care about no stinking flow bench and CFM -- whats the deal.

This is very true. He doesnt even give out flow sheets! I understand his position as people live and die with this, but do most people know that most competition engine builders go for port shape first and flow second?

Tony says that they get heads in his shop all the time that actually flow big numbers, but they dont make any power. He redoes the heads.....the flow drops and the power comes back up to what he normally gets.

It is like making beautiful pasty that tastes like S*&).

[RAIV-Z]

Originally Posted by NHRASuperStock455SD

This is very true. He doesnt even give out flow sheets! I understand his position as people live and die with this, but do most people know that most competition engine builders go for port shape first and flow second?

Tony says that they get heads in his shop all the time that actually flow big numbers, but they dont make any power. He redoes the heads.....the flow drops and the power comes back up to what he normally gets.

It is like making beautiful pasty that tastes like S*&).

Tony absolutely does provide customers with flow sheets. I have one for my RA-V heads.

[rad400]

I hope u hit 500 CFM at what ever lift. 700 would be awesome.

[adam woodmancy]

Awesome Lynn

[cgeise]

I have no problem putting any car I BUILD -- up against anything you drag out of the swamp

[Skip Fix]

Originally Posted by cgeise

I have no problem putting any car I BUILD -- up against anything you drag out of the swamp

But will they be going straight or around corners?

[ho428]

Originally Posted by Skip Fix

But will they be going straight or around corners?

Drag racing vs corners, both have excitement at every high speed turn.
Albeit a completely different kind. vs

Looking at those ports sizes I swear Lynn used to build aqueducts. Damn!

[cgeise]

corners are only for people that dont know where there going - or where they been from --------

[J.C.you]

Originally Posted by cgeise

corners are only for people that dont know where there going - or where they been from --------

didn't you bust that thing up awhile back and have to get it bubble gummed back up? Maybe you would do better trying to turn left.

[J.C.you]

Originally Posted by J.C.you

didn't you bust that thing up awhile back and have to get it bubble gummed back up? Maybe you would do better trying to turn left.

nevermind..bubbubbb...throttlestop...bubbubbb won't work in emano...emano racing

[cgeise]

Originally Posted by J.C.you

didn't you bust that thing up awhile back and have to get it bubble gummed back up? Maybe you would do better trying to turn left.

From the looks of your picture --you should be the last one talking about busting things up --- hell I was prob going faster doing a burn out than you do down the back strech!

[Jeff Kinsler]

see it aint just the cv1 guys that get all uptight!!!!



AND WERE OFF!!!!!!!!

j.c you just dont steal my EHTTFMF and put RA5TTFMF!

nice numbers!