Aussieveedubbers · Tech Talk

Case machining Bris

https://forums.aussieveedubbers.com/threads/84403/case-machining-bris

alien8 ·

I need to get a case and heads opened up for bigger cylinders and have not had any luck searching around the interweb. Can anyone recommend someone in Bris that can do the machining for me? Cheers , Brad.

vw54 ·

Talk to Dangerous on here Dave Butler

matberry ·

Or Crankshaft Engineering where DB used to work, Craig is a VW machining guru, they are at Hillcrest, Bris sth side, ph 3806 7488. Very high quality work

alien8 ·

Excellent!
Many thanks for the info chaps.

dangerous ·

Make sure your machinist is decking the case square, and uses radius inside.
Radius should be a minimum of 2mm, but preferably 3mm.

Also make sure your machinist spot faces the case savers slightly below the deck surface.
Steel is harder than magnesium or aluminium,
so when the heads are torqued up, they might lift the barrel slightly.(=leak)

Another item request is that the #3 deep stud, gets a a sleeve installed,
to support the cylinder and case, where it becomes wafer thin when bored for 94s.

See this link for some pictures. http://forums.aussieveedubbers.com/viewtopic.php?tid=77454&page=1#pid721102

Stanley ·

Craig Torrens wrote:Prices are attached, this is for aircraft standard of machining.
Just curious as to what constitutes "aircraft standard of machining"

Tim Andrews ·

Stanley wrote:
Craig Torrens wrote:Prices are attached, this is for aircraft standard of machining.
Just curious as to what constitutes "aircraft standard of machining"
That's Easy. 'PRECISION', 'HIGHEST STANDARD'.
Building Jet Engines for Hawker de Havilland.
Having to adhere to CASA regulations.
Shall I continue.

How many engine builders would put their hand up when asked to build engines for aircraft?

I doubt very many.

bugzla ·

to get in engine for a 94 bore what price dave would you charge which includes head boring

dangerous ·

bugzla wrote:to get in engine for a 94 bore what price dave would you charge which includes head boring
As of 22nd June 2010,
Cases $260,
Heads $160.

...about $100 more than Stan.

dangerous ·

More expensive because it is machined to Space Shuttle standards.🤓

bugzla ·

does that include the inserts dave

13bwagon ·

dangerous wrote:More expensive because it is machined to Space Shuttle standards.🤓
LMAO 😀

dangerous ·

bugzla wrote:does that include the inserts dave
NO.
I dont do old cases.
All new cases come with case savers now a days.

13bwagon ·

so dave do you work for your self??
or just a side line thing

matberry ·

dangerous wrote:
bugzla wrote:to get in engine for a 94 bore what price dave would you charge which includes head boring
As of 22nd June 2010,
Cases $260,
Heads $160.

...about $100 more than Stan.
dangerous wrote:
matberry wrote:around $220- $270.
OK.
May be I WILL do some for people!🤪
Sounds familiar 🙂

phatratpat ·

dangerous wrote:More expensive because it is machined to Space Shuttle standards.🤓
Dave you had nothing to do with the Challenger disaster
did you ?......🙅

Craig Torrens ·

phatratpat wrote:
dangerous wrote:More expensive because it is machined to Space Shuttle standards.🤓
Dave you had nothing to do with the Challenger disaster
did you ?
😂

bugzla ·

righto

66deluxe ·

Tim Andrews wrote:How many engine builders would put their hand up when asked to build engines for aircraft?

I doubt very many.
That would be me Monday to Friday for 7 years now, building PT6A series turboprops for Pratt and Whitney Canada.

alien8 ·

dangerous wrote:
bugzla wrote:does that include the inserts dave
NO.
I dont do old cases.
All new cases come with case savers now a days.
Does that mean you only do zero mile cases?

dangerous ·

phatratpat wrote:
dangerous wrote:More expensive because it is machined to Space Shuttle standards.🤓
Dave you had nothing to do with the Challenger disaster
did you ?......🙅
😂
After challenger,
NASA called me up because they found that the tolerances
associated with the "aircraft standards" they were using were not close enough!!😂

Any "standard" will have "tolerance" associated with it.
Whether it be a machining process, welding , heat treatment, or operating temperatures etc.

All will have a specification that can be quoted
using a unit of measure,
AND an acceptable range within that unit.

Volkswagen has documented within their factory manuals, all the specifications they require,
and also the range in tolerance of both new, and worn limits.

Racing engines, street engines, and Aircraft engines use totally different specifications dependent on their use.

An engine builder must choose his desired specification to suit the applications,
and for every component, there may be a variation within these specifications,
which is determined from the individual's opinions, and experience.

When refering to machining operations,
the method of MEASUREMENT and SURFACE FINISH are the two specifications I focus on.

When I use NEW products, I aim for a TOLERANCE equal to half the Volkswagen specification,
but vary the clearances, interference, or surface finish for the desired use.

I do not know what Stan's specifications are, but the results of his workmanship and experience are without question.

Phil74Camper ·

Hawker de Havilland went bust around 10 years ago, and was bought out by Boeing. They recently closed down their historic Bankstown premises and transferred their all their business to Melbourne.

The Challenger and Columbia shuttles both blew up, but neither was the fault of its engines. The Challenger had a failure of the strap-on solid booster, while the Columbia was damaged by a piece of the external tank falling against it. The shuttle's main engines have worked perfectly over 137 missions so far (and only two to go). The shuttle system has over 2.5 million parts and is the most complicated piece of machinery ever built by human beings.

Perhaps the ultimate should be 'machined to Saturn 5 standards'. 13 perfect launches, three missions to lunar space (Apollo 8, 10, 13) and six missions to lunar landing (Apollo 11, 12, 14, 15, 16, 17). At 160 million horsepower, the most powerful machine ever built by human beings.

dangerous ·

Awesome stuff!
That footage of the Saturn V launching and leaving the Earth is still impressive.
Would be awesome to see in person.

Sides ·

Warning - MASSIVE diversion off topic... 😉

Something to think about... with Volkswagen's and Porsche's am sure you've all heard the "Hitlermobile" slurr... why doesn't that happen with NASA rockets and the shuttle ???

The Saturn V rocket and it's F1 engines were designed by Wernher von Braun... the German rocket expert who also designed the V1 "Doodlebug" flying bomb and V2 rocket as weapons for the Luftwaffe.

Some of von Braun's designs are also included in both the Space Shuttle Main Engines (SSME's) and Space Shuttle Rocket Boosters (SSRB's)... so couldn't the Space Shuttle then be called a "Hitlermobile" also ???

Stanley ·

Tim Andrews wrote:
Stanley wrote:
Craig Torrens wrote:Prices are attached, this is for aircraft standard of machining.
Just curious as to what constitutes "aircraft standard of machining"
That's Easy. 'PRECISION', 'HIGHEST STANDARD'.
Building Jet Engines for Hawker de Havilland.
Having to adhere to CASA regulations.
Shall I continue.

How many engine builders would put their hand up when asked to build engines for aircraft?

I doubt very many.
Good answer Tim.

Seen to many companies saying the same thing who wouldn't have a clue what a MIL STD or Aerospace STD was and just used it to justify outrageous prices.

Obviously this isn't the case with Stan.

Phil74Camper ·

Sides wrote:Warning - MASSIVE diversion off topic... 😉
Something to think about... with Volkswagen's and Porsche's am sure you've all heard the "Hitlermobile" slurr... why doesn't that happen with NASA rockets and the shuttle ???
The Saturn V rocket and it's F1 engines were designed by Wernher von Braun... the German rocket expert who also designed the V1 "Doodlebug" flying bomb and V2 rocket as weapons for the Luftwaffe.
Some of von Braun's designs are also included in both the Space Shuttle Main Engines (SSME's) and Space Shuttle Rocket Boosters (SSRB's)... so couldn't the Space Shuttle then be called a "Hitlermobile" also ???
Hi Dave, yes the Hitler thing with Volkswagens always pisses me off too. Mercedes Benzes were Hitler's favourite cars yet you never hear Hitler connections there. Hitler always preferred the Mercedes silver arrow grand prix cars over the Auto Unions. Likewise BMW made radial engines for Luftwaffe planes like the FW190 - BMW's logo is actually a stylised propeller - yet they don't have a Hitler stigma. Then there's Mitsubishi - they made the Zero fighter during the war. You can make lots of historical connections to current day companies and WW2 - yet the Beetle always seems to be the Hitler-mobile in popular culture. I just tell people that our Volkswagens were made in Melbourne; that seems to shut them up.

Wernher von Braun was an officer in the SS during the war but he always said it was compulsory for engineers at the time. He was no Nazi in ideology. When his V-2 rocket was first successfully fired at England, he said "the rocket worked perfectly except it landed on the wrong planet." He said it was his darkest day. Von Braun resisted making weapons of destruction and was arrested by the Gestapo in 1944; he was only released when Hitler realised his value. In 1945 his team surrendered to the Americans. He's German, yes, but let's not make Nazi connections.

BTW, von Braun didn't design the V-1 'buzz bomb' - that was the Feiseler company and the Argus engine works.

You could say that later Von Braun was the chief architect of NASA's rockets, especially in the early days of the Redstone and Jupiter-C, but by the Gemini project in the mid-60s the design team was several thousand brilliant men and von Braun was their boss. The Saturn 5 had over 2 mililon parts and von Braun didn't design them all! He was a brilliant 'concepts' man and came up with ways to use Apollo hardware to make Skylab, moonbases, and Mars missions - if not for Vietnam, it might have happened.

http://en.wikipedia.org/wiki/Werner_Von_Braun

Here's von Braun in front of the Saturn 5's first stage engines, built by Rocketdyne. Each engine burned 3,600 litres of fuel per second and made around 40 times the power of a Boeing 747 engine. And the first stage had FIVE of them!

phatratpat ·

I wonder what it would do down the quarter mile ?😁