Guess this piston!

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AuroraAxela
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Postby AuroraAxela » Thu Feb 23, 2012 9:14

That's actually really cool. My boss is a huge NASCAR fan, he would love that stuff lol. I'll have to show him. Post a pic of the damaged one?
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Huzer
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Postby Huzer » Thu Feb 23, 2012 9:14

erod550 wrote:My mom is a huge Michael Waltrip fan. She was all bummed about his early wreck last weekend.


We were actually in the shop in November when Mark Martin was getting fitted for his seat. He and Waltrip then went off into his office to chat. Funny, Martin's a tiny little dude and Waltrip is rather large.

AuroraAxela wrote:That's actually really cool. My boss is a huge NASCAR fan, he would love that stuff lol. I'll have to show him. Post a pic of the damaged one?


That I will, I'll snap a pic.
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RichB
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Postby RichB » Thu Feb 23, 2012 9:14

Even Toyota has Hemi's now....
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Huzer
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Postby Huzer » Thu Feb 23, 2012 9:14

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ecam8000
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Postby ecam8000 » Thu Feb 23, 2012 9:14

Still think that is a wedge motor. Two valves in line on same side of head. Could only guess at the stroke. I don't know what displacement nascar runs, but it the limit is 350 cubes that stroke would only be 2.75" with a 4.5" piston!
If they have a smaller CID limit, that stroke would get even shorter. That big bore/short stroke would explain how the get engines to live for 500 miles turning 8500+ RPMs.

Formula for a piston engine (sorry rotory guys) boreXboreXstrokeX.7854Xnumber of cylinders.
Eric
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Huzer
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Postby Huzer » Thu Feb 23, 2012 9:14

ecam8000 wrote:Still think that is a wedge motor. Two valves in line on same side of head. Could only guess at the stroke. I don't know what displacement nascar runs, but it the limit is 350 cubes that stroke would only be 2.75" with a 4.5" piston!
If they have a smaller CID limit, that stroke would get even shorter. That big bore/short stroke would explain how the get engines to live for 500 miles turning 8500+ RPMs.

Formula for a piston engine (sorry rotory guys) boreXboreXstrokeX.7854Xnumber of cylinders.


NASCAR runs a 358. I was slightly generous on my measurement, as I don't have a ruler here at work. It's actually 4.185" bore.

Displacement 358 cu. in.
Power 850 hp
Bore 4.185 in.
Stroke 3.250 in.
Compression Ratio 12.0:1
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RX-7 Chris
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Postby RX-7 Chris » Thu Feb 23, 2012 9:14

the nascar engine size is 358ci. I actually guessed this yesterday in the chatbox after a ton of guesses, lol.
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ecam8000
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Postby ecam8000 » Thu Feb 23, 2012 9:14

So that puts the stroke about 3.26.
Eric

99 Miata, 45 STR SCCA goto: http://www.rmsolo.org/



2 Fords 29 & 2000.



99 BMW 328i



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VRx8
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Postby VRx8 » Thu Feb 23, 2012 9:14

Mazda 13b
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ecam8000
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Postby ecam8000 » Thu Feb 23, 2012 9:14

Huzer wrote:......I was slightly generous on my measurement, as I don't have a ruler here at work. It's actually 4.185" bore.



What? Are you a fry cook? Do you have tools at home? Some people!:cool:
Eric

99 Miata, 45 STR SCCA goto: http://www.rmsolo.org/



2 Fords 29 & 2000.



99 BMW 328i



THANKS! To all who serve.
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