The Porsche thread.

[LateFan]

Damn.

[LateFan]

OK you Porsche guys - question:

I've always wondered about the megaphone racing exhaust on various Porsches, and what it does (makes good noise, dummy!)...and specifically, what does the cookie cutter piece in the center do?

I know some old Alfa race cars had a megaphone exhaust, and they were loud! I assume it helps with scavenging at high flow / high rpm.

But I don't get what the cookie cutter does....you wouldn't add weight if there wasn't an engineering reason.

906


bullet mufflers, then megaphone

[LJ851]

My understanding is that the cookie cutter is a brace to keep the end of the megaphone from cracking and falling apart .

[LateFan]

ahh...not for airflow, just for shape. Makes sense.

[SkiFree]

Got to do this little photoshoot yesterday.

[LateFan]

^^ Nummy.

Ran across this PS - "Base spec Boxster with steel wheels and flat black plastic trim."

I sorta dig it. Straight sports car.

[iXguido]

thought that was a miata for a second

[LateFan]

Much cooler shaped....and mid-engined!

[LateFan]

Signal Yellow

This was the color the '73 RS prototypes were, before the famous all-white cars with colored wheels and Carrera stripes.



My favorite Porsche wheel

[LateFan]

[LateFan]

This is the first production 914/6-GT, #914 043 0475, probably late 1969. (this is it mostly restored and on display recently)



It was built with thinner, lightweight steel panels, fiberglass front & rear lids with balsa reinforcement strips, fiberglass bumpers, chassis reinforcement plates, and a full cage. The targa roof panel was bolted on for stiffness. It had a 2.4 with mechanical fuel injection and 200hp. It weighed about 1940 lbs.

It was the first Works GT car, one of 11 built for internal testing, parts prototyping, practice, and racing. It was the practice car for the 1970 Targa Florio. After testing, it was sold and raced in IMSA in 1971 and '72 by Peter Gregg, Hurley Haywood, and Lee McDonald.

Then, according to Brian Long's book, Porsche built these 1972 chassis with bigger engines. Look at those 2.4S and 2.7RS engines. I assume those are street engines with those standard HP numbers.

[LateFan]

Stars on Ice

total lack of gription...

[LJ851]

[JRKOUPE]

Got to do this little photoshoot yesterday.

nice pic...

but man that P car does nada for me.......




buuuut, had a track day yrs ago at WGI...and a student had one......the sound was pure evil........impressive


more pics of that retro RSR car...cmon man!

[mariano_is_my_hero]

nice pic...

but man that P car does nada for me.......




buuuut, had a track day yrs ago at WGI...and a student had one......the sound was pure evil........impressive


more pics of that retro RSR car...cmon man!

that "retro rsr" is a singer.

built/designed/conceived right her in LA and loved by the world over as more art than car