Fast Bugs that ran Deano heads?

[Jim Ratto]

here is 2 sets that dean and his son larry did for me back in 84and86 the ones in the grey ghost were 42x37 small port 1984 larry lowery did these the engine made around 215hp on 12.5 comp 2175 fk89 1.45 rockers. the other set dean did they were 46x38 tit valves 2332 fk98 1.45 rockers 14.01 comp est power 240hp. grey goust ran 12.01 at 107. the black 67 ran 11.62 at 114.50. both cars were all steel the black 67 was the heavie one.  UD.

cool pics. Jeff when did you get into hot rodding VW's?

[The Ideaman]

K-Roc is one of the guys capable of measuring velocity. 

Steve Hollingsworth also has velocity measuring capabilities, I believe.  His flowbench almost looks like the Berg's, because the same engineer built it.

[ugly duckling]

31 years ago.i was 14 in this picture i bouhgt the car for 500.00 on a lawn mowing buget. its hard to belive that bug was only 12 years old when i bought it 12 years at that age is an aternity. now it goes by at a blink of an eye. UD. sorry about the double pic post i dont know what happen there. 

[ugly duckling]

im sure everybodys seen this. here is the late great deano him self. and what a great an generis guy he was.wrencing on the test buggy. UD

[Donny B.]

Deano was never in it just for the money.  He was a true gentleman and a credit to all things VW.

[ugly duckling]

here is another for you guys that havent seen my pictures. i wish he would had set a record with this car he deffenetly deserived it if he had i know he tryed realy hard but it just wasent meant to be i gusse. UD.

[speedwell]

what's the car on the side of  deano  fiat 850 ??

[Zach Gomulka]

Steve Hollingsworth also has velocity measuring capabilities, I believe.  His flowbench almost looks like the Berg's, because the same engineer built it.

Has or had??

[Donny B.]

He still has it.

[ugly duckling]

as far as i know that was the old terisoar the one that brother ken took the record in the seventys with a 1835 at the salt flats. i rember seeing the car back when ken had ARPM in santaana kens son used to 1/4 mile the car. the kit styel body as i rember was called the montey deffenetly airodynamic the front end of that car would cut air like a hot knighf would cut cold butter.  sorry to get off subject. UD

[max, Der Bahnstormerz]

I'll probably get shot down for this one but here goes,

Why are you all, me included, willing to spend 1000's of bucks on heads. Only to top them off with a pair of inefficient carbs that require a strong signal to draw fuel through them. You then limit the air flow capabilities of the intake with a venturi, to help strengthen that signal. To top it off you then add a cam with so much overlap that the effective intake bore needs to be something like 40-43mm.

If it's pure HP and driveability that you're after then run something like a 50mm intake bore, no throttle flap and inject the mix directly into the head, oh, and run a decent amount of compression too.

[nicolas]

I'll probably get shot down for this one but here goes,

Why are you all, me included, willing to spend 1000's of bucks on heads. Only to top them off with a pair of inefficient carbs that require a strong signal to draw fuel through them. You then limit the air flow capabilities of the intake with a venturi, to help strengthen that signal. To top it off you then add a cam with so much overlap that the effective intake bore needs to be something like 40-43mm.

If it's pure HP and driveability that you're after then run something like a 50mm intake bore, no throttle flap and inject the mix directly into the head, oh, and run a decent amount of compression too.

probally true...


but wrong forum!


 

[K-Roc]

Port velocity is equally if not more important than flow. Very few head porters are able to measure usable port velocity.

Strange, because port velocity tools are readily available from these guys.
 http://www.audietech.com/

I wonder if too much attention is placed on flow at full lift. The valve only spends a short amount of time at full lift. Wouldn't it be wiser to look mid lift flow numbers, since the valve spends more time there? I think a good example of this is Alan Uyeno's motor. Alan's car runs pump gas and goes 11.90s. Nothing special about the full lift flow numbers, but really good mid lift flow. Heads by K-Roc by the way.

Hey Cameron, The tools to measure port Velocity are readily available from a lot of sources, mine are from Dwyer and I use a basic U tube manometer with the probes on the flow bench at 28" ( usually measuring the velocity at full lift ) Having a set of Velocity probes ( Pitot Tubes ) just to measure average velocity is a waste of money, one can calculate that by simply knowing the cross section of the port and the CFM of flow on the bench.

FPS = _ Flow_CFM *2.4 ) / Average CSA

The thing with velocity probes is the fact that you can measure velocity in specific areas of the port and find the Fast, Slow, and turbulent spots,
Then make your changes to the port.

On Alans port for example I based his port cross sectional area soley on the displacement and RPM at which he wanted his peak HP to occur,while porting them I paid close attention to the average Cross section and the Velocity, that's it... I didn't even flow his heads for a CFM number except for fun after I was finished. ( and the numbers are a lot lower than what most would expect) Chasing raw CFM numbers on a flow bench is about the quickes way to get yourself in trouble.

Mid lift..numbers ...well I'm for good numbers through the entire lift curve,

People will argue the valve sees mid-lifts twice, well what they fail to realize is the valve does not spend as much time as they think because it's moving so fast. At the bottom of the lobe the valve has to be slowed down and stopped. At the top it must stop and change directions. If they had or used a Cam-Doctor(R) they'd understand.

See ya,

K-Roc

Alan's port looks kinda like this one.. 

[louisb]

Now that is what I call a great first post.

--louis

[cameron shorey]

Hi Darren,
Thanks for the information, and nice photos. I should have been more specific in my post.
The heads that I was refering to were the first set that you did for Alan. You worked your magic, and I was there when you flowed them.
Whatever you did, they the heads worked. Alan's car still made several passes in the high elevens.
Sorry for the crappy picture. Alan's head, on Darren's flowbench.




Edit; Forgot to include the photo.