the all aussie dribble thread!

[Steve NW WI]

I don't probably want to know. How about "Cheer"?

 

[Eccentric]

You Aussies want me to let ya know how Marcos does today, or do you want to wait till the TV signal makes it there next week?

For those of you that follow him in NASCAR, I'm one of them Earnhardt fans. Grew up watching the old man, been a Jr fan since he died, now watching the Dillon boys coming up through the ranks.

Marcos stands a good chance of winning on an oval this year if the Petty boys can put enough car under him. Dude is a flat out wheel man, I like watching him. As a Chevy guy (Holden in Aussese), I am forbidden to cheer for him though.

 

[MCW]

I don't probably want to know. How about "Cheer"?

That's better

 

[Lisnm8]

I am always fascinated at the pit crew, and how old Skool they keep it in NASCAR like wtf with the guy with the huge broom leaning on the barrier cleaning the air intake! As for webber I am disappointed his leaving f1 hope Ricardo gets a good car next year and the Moto gp needs a few Aussies running up front or it will lose me as a fan!

 

[husq2100]

are nascar still running carbureters? what are the differences in the chassis? or are they a controlled chassis? are they still a 5lt engine?

 

[tdi-rick]

Marcus was good enough to get to F1, just didn't have the funding.

My old race engineer moved to the US way back when I stopped running and works for 'The King' (or did) and at the time built a few engines for the the Petty's kids in lower classes and was running the race school/ride experience.

 

[tdi-rick]

I am always fascinated at the pit crew, and how old Skool they keep it in NASCAR like wtf with the guy with the huge broom leaning on the barrier cleaning the air intake!

Only x number are allowed over the pit wall, hence the bloke with the big stick

Don't be fooled by the apparent 'old school' look, the big NASCAR teams spend as much as the F1 teams ! :msp_ohmy:

Their tech is amazing, and I'm well out of the loop these days.

 

[Lisnm8]

Seriously they still run cast iron blocks and carbys! Wish I could slap one in my chevelle! My 650 holleys given me the shiats might have to go vac secondaries i can't get this hesitation out of it!

 

[tdi-rick]

Seriously they still run cast iron blocks and carbys! Wish I could slap one in my chevelle! My 650 holleys given me the shiats might have to go vac secondaries i can't get this hesitation out of it!

Back when the V8'S came in here a full Harrop inlet manifold/injection setup for a Chev cost....

Drum roll please....


$25,000


I kid you not, and that's not including anything from Motec to set it up, crank angle sensors, loom, harness, etc. and that was 1995 numbers.


Even a full on Nascar carby wouldn't approach anything like that fully set up, maybe only 10% of that cost.

Now I ask, on a $/hp basis what's better, carbies or injection ?





As for a four barrel, I really used to like the old Quadrajet, and they were cheap.


[edit]The smartest thing they did with the V8's was a 7500RPM rev limit and a control ECU.
The more you rev an engine you dramatically shorten its life and the $ to get the revs to make the power go up exponentially.

Back when Larry Perkins was still running the Holden 5 litre/304cu. in. engine he was taking it well past 9000RPM in qualifying, which is bloody amazing for a stock block, stock iron head engine that's substantially lighter than an iron block Chev or Windsor the same size.
They were only three lap screamers though

 

[MCW]

Now I ask, on a $/hp basis what's better, carbies or injection ?

Carbies for sure if you are talking peak HP alone. Driveability and overall performance goes to injection. A number of years ago I saw peak HP comparos between 45mm DCOE Webers and EFI and the good old Weber won every time. This was in the mid 90's though and EFI has changed a bit as far as overall management and sensors go but I doubt peak HP has changed a hell of a lot - then again Webers aren't exactly cheap either
Try hanging quad Webers off a V8 though and you'll be looking at a few bikkies there

 

[husq2100]

can anyone confirm that NASCAR is still running cast iron blocks?

are the new consumer chev v8s direct injection and variable cam timing? (yes they are still a single mid block cam I believe)....

 

[tdi-rick]

Try hanging quad Webers off a V8 though and you'll be looking at a few bikkies there

No where near $25,000 for 8 throttle bodies and runners though.

 

[tdi-rick]

Current Sprint Cup engine specs here NASCAR Sprint Cup Engines | Roush Yates Racing Engines
Iron blocks still Serg

Looks like they use injection now, but a nice, basic system with a single throttle body.

Have to say the 8 throttle body style as used by our cars delivers far better driveablity, which is important on road courses.

This is from '09

Engine Block and Crank Assembly: The engines will be of a high Nichol content iron block with a maximum of 4.125” bores on a 4.5” bore spacing and deck height will be fixed at 9.0”. All engines have a 3.25” stroke and a maximum bore of 4.185”.

The mains will incorporate the new Chevy R07 layout of four bolt mains and two side bolts on an extended bulkhead skirt. Rods have a minimum weight of 525 grams and pistons have a minimum weight of 400 grams.

They have a raised camshaft location no more than 6.125” above the crankshaft to improve valvetrain dynamics and 2:1 roller rockers.

Competition Cams from Memphis, TN. manufacture all the camshafts for NASCAR and depending on the track, duration and lift is different within NASCAR maximum specs. NASCAR allows only solid flat tappet camshafts that limit cam lobe ramp speeds.

All tappet bores will be the same size at .825” and valvetrain angles must fall within NASCAR specs. The new engine block has taken the best of all the current engines.

What always made the Dodge engine so strong was the camshaft location and lifter bore size. Both measurements are included in the new design.

Heads: Heads for the engines will be the largest area for teams to explore an advantage. The heads will be made of aluminum and use six head bolts per cylinder. Each head will be manufacturer exclusive to their engine and of the canted valve design.

The heads will have a maximum valve size and port diameters, but port radius and profiles are left to the engine builder’s discretion. Combustion chamber size will be fixed, but the combustion chamber shape and design will be open for exploration.

The best heads available on the older engines were the ones on the Ford. Ford and Doug Yates designed an improved head loosely based on the 351 Cleveland and used the canted valve alignment.

This made for better engine breathing at higher rpm, thus more power. All of the new heads use huge tapered ports and canted valves, using the best ideas of the Ford designs. Chevy fans, please don’t start sending me things about the old big-block engines.

The Ford Cleveland designs were in response to the big-block Chevy on the 385 Ford big-blocks and the design idea filtered down to the Cleveland. The current NASCAR designs are worlds ahead of even the best of anyone’s canted valve heads regardless of the manufacturer.

 

[tdi-rick]

FWIW the previous generation of NASCAR heads were unsuitable for our V8's.

Due to the reduced engine capacity of our series (5 litre) and the 7500RPM rev limit the intake runner cross sections and volumes were totally unsuitable, as were the chambers.
The amount of material that was put back into the heads for use here had to be seen to be believed.

It gave huge gains in driveability and torque without sacrificing too much (if any) off the top end.

At the time the best heads came out of a small workshop in Sydneys South Western Suburbs and I was lucky enough to glean some knowledge while the boys did my FF heads.


I was also able to totally out-psych one of the countries best known engine builders by casually asking one day if he had a valve guide cutter so I could use BMW/VW stem seals on the little Ford engine as my head guys didn't..
He looked at me, repeated the blokes name, said does X do your heads ? muttered #### and his body visibly dropped.

 

[ozflea]

Now back to the subject of chainsaws the last of the bits needed to get my 3120 complete arrived this afternoon from the states here she sits ready for starting





But since its only going to be a shelf queen I thought why not go all the hog and waste my pension and fit a big bore kit a Varney reed valve and its due here in about 3 weeks





I have the large bore HD Tilly here already

McBob

 

[lumberjackau]

another Shelfie by Bob, oh that just makes my nipples hard, woohoo, yippie, now lets see here, am I worried?

Good grief Charlie Brown

 

[ozflea]

another Shelfie by Bob, oh that just makes my nipples hard, woohoo, yippie, now lets see here, am I worried?

Good grief Charlie Brown

I'm glad it turns you on ol mate as to whether your worried or not again I don't care at least it will be a pretty pretty shelf dancing queen and to boot not Chinese

 

[ausneil 1]

another Shelfie by Bob, oh that just makes my nipples hard, woohoo, yippie, now lets see here, am I worried?

Good grief Charlie Brown

whats going on Will, don't tell me he's back to fishing again.

 

[MCW]

No where near $25,000 for 8 throttle bodies and runners though.

Sorry Rick, I wasn't talking race cars in that post. Anything racey costs big bikkies when you start talking engine management

 

[ausneil 1]

Sorry Rick, I wasn't talking race cars in that post. Anything racey costs big bikkies when you start talking engine management

I got lost reading Ricks posts, straight to the keeper.
interesting is the word I was thinking.