1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Hit the dyno today

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Old 05-17-03, 01:23 PM
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Hit the dyno today

Mustang dyno

85 Mazda RX7 GS
stock port
racing beat air cleaner with K&N filter
MSD dual leading coil mod
racing beat header
Mindtrain exhaust
stock timing
stock fuel

108 hp @6750

not bad, gotta start playing with the fuel mixture and timing now....

Dan
Old 05-17-03, 03:18 PM
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Why'd you stop at 6750? can you upload the dyno sheet?
Old 05-17-03, 03:32 PM
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Originally posted by brianmcd
Why'd you stop at 6750? can you upload the dyno sheet?
I believe stock Carb falls off somewhere around there.
Old 05-17-03, 04:28 PM
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nope, another person on this forum and I made horsepower all the way up to 7800.
Old 05-17-03, 10:21 PM
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Like I said, I think there's more to be found with fuel and timing adjustments....

Dan
Old 05-18-03, 10:07 AM
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Originally posted by abeomid
I believe stock Carb falls off somewhere around there.

mine made power all the way up to 7k (where i stopped), and it was still climbing. i have a stock carb. if i can find the dyno sheet, ill post it.
Old 05-19-03, 12:08 AM
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Stock carbs can run out of fuel at about 6500rpm without being modded, however, my 12A (stock port) still made peak power at 7800rpm with the stock carb. With the modded carb, it pulls above 8000rpm.

Great stuff - hope you get more once you play with the timing a little.
Old 05-19-03, 06:54 AM
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My stock carb fell off at around 7k before I installed my Mallory Comp70 fuel pump. Now she pulls hard to at least 7800.
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