Beak or De-Beak
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Fastest 998 mini in the world? 13.05 1/4 mile 106mph

yes wil, ill have to of those?

I see. Well, I didnt mean to be rude actually... I know what your saying but lets not turn this thread into something about Graham or Calver or Vizard or ... I posted because its a thread about beak vs de-beak and I thought it would give info to people. Which obviously it has.

Cheers,
Pete.

1132cc Turbo ~120 bananas ATW - Fun Fun Fun

sorry. most threads normally go down hill after a while, normally resulting in piss taking and complete change in topic of conversation. normally a moderator will step in if it gets totaly out of hand.

on subject. i dont know this Graham, and have never met or talked to any of the 3 you mention.

i see your point and see your proof but my head was proof that this is wrong. i think alot of different things leed to the same problem and maybe if your spring rate is right etc etc then de-beaking may be the final thing required to stop valve seat problems with unleaded fuel.

would it not be simpler to use a fuel addative?

1132cc Turbo ~120 bananas ATW - Fun Fun Fun

whats vitamin C? is it like rabbit food or something? can you get it from the kebab shop?

Glad you took it in the right vein Turbo Shed Now aren't you going to tell me to go to bed?
Please do, im tired tonight... and the beer (Blue Tongue Lager I must add) is kicking in nicely...

Pete.

PS: Forgot to answer your question!!! Vitamin C is a fuel additive. Shh, secret, go to your Kebab shop, ask for a tub of Vitamin C with Homous and throw it in your with your fuel next time... forget the radius arms! This will remove rust before your eyes!

1132cc Turbo ~120 bananas ATW - Fun Fun Fun

thought you'd be a Fosters or 4x man

Ew!

We only export that stuff! Not fooling around, no one here drinks it!

I reckon more aussies drink imported beer than anything here. Blue Tongue is the Beez Kneez though... and Beez Kneez is very vey nice too!

Pete.

1132cc Turbo ~120 bananas ATW - Fun Fun Fun

I was just told why Fosters is the only Aussie beer available in Europe. Because the Aussies don't want that shit, and keep the proper beer themselves :)

You want proper stella inside ya! Then hit the kroni's!

Stella does bad things to this poor old badger...
I'll be sticking with Carlsberg Export

There is no sense crying over every mistake- you just keep on trying til you run out of cake.

in stella its the aluminium apparently.

boddingtons is the way forward. None of this wife beater stella stuff! Ale rather than lager....mid thirties thing me is thinking! :)

Edit:..........O/T that magners is quite nice drop of cider!

Edited by Jason G on 12th Jul, 2007.

1132cc Turbo ~120 bananas ATW - Fun Fun Fun

Lets face it all theyve got is bud and thats as weak as piss.

Ayingerbrau all the way for me!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

I was reading something about the original A series and Harry Weslake said that the beak was to throw the charge away from the hot exhaust valve and allow detonation supression of lean mixtures, hence economy. So, with a beak, the hot exhaust valve doesn't get to see the fresh charge for a nanosecond more and allows you to run it leaner. Bearing in mind post WW2 fuel prices and the original A30 with it's 803cc engine. This was why it was the case. The beaks aren't that significant on the large bore engines and the high load of fuel on the turbo cars will probably cool things anyway and negate the efficiency of the beak. On race engines, I would have thought the beak was a good idea.

Then again, weslake tried all sorts of stuff, particularly with his 8 port head. They weren't sure at the time of development as quite a few heads had no combusion chambers, very small ones, beaks/no beaks. We have to assume that earlier tuning efforts assumed the beak was necessary and left it there. Arden heads don't have one. I'd say Weslake was the most credible with his engine design and the beak persisted, probably due to the assumption that if they took it away, it would cock things up. I'd lose it myself as I wouldn't be running lean mixtures anyway.

That's my point and I reckon it's on the money

Bugger off, I'm getting there.

Another post back from the Dead,

Was there ever a answer to this or is there any other topic on this subject Im trying to develop a head for Next years racer, My self and another engine tuner had a good ould chat about this the other night over a heep of stella and came up with an Idea which would involve removeing the "beak" has anyone done this on a Turbo app with success,
regards,
Paul.

Most of the benross and other heads ive seen have no beak.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

I remove the beaks from my heads purely to give me the chamber volumes required, not for any performance gain as such.
If i could get the volumes and retain a more "traditional" chamber shape, then i would.

WWW.TURBO-MINI.COM

I don't think that this question was ever answered with anything other than opinions.

However, someone on here recently pointed out that the best flowing modern engines have virtually no combustion chamber and the valves are unshrouded except for the cylinder walls.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

im sat here drinking fosters. i feel like i should leave!!!

got a vodka and coke, drinking chilling out trying to understand all of that i think my brian is bleeding!

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

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Fastest 998 mini in the world? 13.05 1/4 mile 106mph