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> 908 Engine on the Dyno at Rothsport, Question...what transmission went in the 914-8 car?
Britain Smith
post Jan 4 2011, 10:13 PM
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Check out this cool video of a 908 engine on the engine dyno at Rothsport Racing in Tualatin. I had the privilege to not only see this engine during its assembly phase, but they recently had another 908 engine under assembly and on the dyno that I got to see at several phases of the rebuild. Those engines are remarkable in the engineering detail from that era. Every nut, bolt, and stud was titanium and the exhaust layout was impressive.

Welcome to Rothsport Racing - Engine Dyno Tuning - Porsche 908 Engine

Question: What engine was behind the 908 engine in the factory 914/8 car?

-Britain
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r_towle
post Jan 4 2011, 10:22 PM
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No idea, but I recall hearing that they could dogear changes trackside...so it must have been a custom unit.

Any idea what the bore and stroke were?

Rich
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Zimms
post Jan 4 2011, 10:45 PM
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Attached Image

This is a photo of the silver /8 from the museum. Maybe you can identify it from this?
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sixnotfour
post Jan 4 2011, 11:27 PM
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Good stuff , here is another that goes with,
http://www.youtube.com/watch?v=McKRagEpqnk
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rick 918-S
post Jan 4 2011, 11:50 PM
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Jeeze! did you see that freakin dizzy! (IMG:style_emoticons/default/wacko.gif) Cool!
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KELTY360
post Jan 4 2011, 11:54 PM
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Sheer music (IMG:style_emoticons/default/rock_band.gif)
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SirAndy
post Jan 5 2011, 12:42 AM
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QUOTE(Britain Smith @ Jan 4 2011, 08:13 PM) *
Question...what transmission went in the 914-8 car?

According to DGVWPB the red 914-8 had a "914-6 style transmission which was re-geared and strengthened" ...

The real kicker is the shift rod which goes from the shifter in a 90 degree angle towards the passenger side first, then in another 90 degree angle straight backwards under the passenger seat and then with another 90 degree angle into the bottom of the transmission!

(IMG:style_emoticons/default/blink.gif)
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SirAndy
post Jan 5 2011, 12:44 AM
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Btw. DGVWPB also has dyno sheets and a acceleration diagram ... (IMG:style_emoticons/default/driving.gif)

The diagrams show the max. speed at 262 km/h in 5th gear at 8000 rpm.

However, the redline was set for 8400 rpm and the motor is supposedly good for 10,000 rpm so in theory the car can go even faster than that.
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TC 914-8
post Jan 5 2011, 12:57 AM
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I have a Porsche book that lists the 908 as the "Widow maker" Wayyy to much engine for the car.
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messix
post Jan 5 2011, 02:24 AM
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QUOTE(TC 914-8 @ Jan 4 2011, 10:57 PM) *

I have a Porsche book that lists the 908 as the "Widow maker" Wayyy to much engine for the car.

nonsense!

there is never "too much"!
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Brett W
post Jan 5 2011, 08:26 AM
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No Such thing as too much motor, just not enough driver.
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sean_v8_914
post Jan 5 2011, 08:44 AM
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hike up your skirt Nancy!
"you have enough power when you can lay black skid marks from your last apex to the next turn in"
too much power is like saying too much money
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TC 914-8
post Jan 5 2011, 09:01 AM
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QUOTE(Brett W @ Jan 5 2011, 06:26 AM) *

No Such thing as too much motor, just not enough driver.

(IMG:style_emoticons/default/agree.gif) I'll dig up the book when I get home and scan some details (IMG:style_emoticons/default/popcorn[1].gif)
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pcar916
post Jan 5 2011, 09:08 AM
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QUOTE(SirAndy @ Jan 4 2011, 10:42 PM) *

The real kicker is the shift rod which goes from the shifter in a 90 degree angle towards the passenger side first, then in another 90 degree angle straight backwards under the passenger seat and then with another 90 degree angle into the bottom of the transmission!


If that pic is correct the diff cover is on the correct side so the diff/ring can be removed and serviced without having to take the gear cluster out first (911-like). That sure makes for easier LSD clutch changes and diff/lash setup! That's true in our cars only if the trans is inverted.

Then we have to put up with a steep CV/axle angle into the wheel hubs unless the car is lowered to about 1-2 inches above the ground. (IMG:style_emoticons/default/sawzall-smiley.gif)

.... too much power? bwaaaahhhhhh!
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JmuRiz
post Jan 5 2011, 09:34 AM
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Cool, that's the same type of unit that was in the red 914/8...i forgot the 908 had a cooling fan like that.
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sean_v8_914
post Jan 5 2011, 10:08 AM
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I know the book. "Scary Porsches by Nancy Fancypants"
How about Mark Donahue in that short tail 917 with 1400-1700hp on a dial? that is the souce of the above quote. It takes all types to make this world go 'round. some write books and some make the history for them to write about.
"Scotty, I need more power, now!"
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Chris Pincetich
post Jan 5 2011, 10:54 AM
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3 years ago a 908 arrived at the PCA AX race I attended. It was a "shake-down" exercise 2 weeks before Monterey Historics. They paid several Benji's and were granted unlimited runs. I spent almost 20 minutes oogling over it during our lunch break
(IMG:style_emoticons/default/drooley.gif)
It posted times 1-2 seconds faster than any other car. By the end of the day they were happy enough to adjust settings for faster AX times vs. track feel tuning. Then they got even faster. I think it was a 908/3 and know it was the one with Martini Racing stripes that took 2nd or 3rd overall at the Historics race that year.
I want one!
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underthetire
post Jan 5 2011, 11:03 AM
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QUOTE(ChrisNPDrider @ Jan 5 2011, 08:54 AM) *

3 years ago a 908 arrived at the PCA AX race I attended. It was a "shake-down" exercise 2 weeks before Monterey Historics. They paid several Benji's and were granted unlimited runs. I spent almost 20 minutes oogling over it during our lunch break
(IMG:style_emoticons/default/drooley.gif)
It posted times 1-2 seconds faster than any other car. By the end of the day they were happy enough to adjust settings for faster AX times vs. track feel tuning. Then they got even faster. I think it was a 908/3 and know it was the one with Martini Racing stripes that took 2nd or 3rd overall at the Historics race that year.
I want one!
(IMG:style_emoticons/default/beerchug.gif)



This one?
http://www.youtube.com/watch?v=wFcm4KUvQsg
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thelogo
post Jan 5 2011, 11:11 AM
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sorry but this motor makes every v8

look pussy (IMG:style_emoticons/default/chair.gif)
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Cap'n Krusty
post Jan 5 2011, 11:42 AM
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As I recall, and I could very well be wrong, the 908 had a tranny very similar in design to the "snail tranny" used in some 1979-1980 924s and 931s. The diff was behind the gear cluster instead of in front of it. Dennis Aase would know, he had one ...............

The Cap'n
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