Fuel Upgrade for Supercharged FC??
#28
Project P --- Pedospeed
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o man, im almost embarrassed to show these!!! the engine bay looks so nasty (i had recently had the hood refinished/painted and they didnt remove it!! thats where all the "dust" is from). there are pics on pages 2, 3, and 4 i believe. keep in mind, THERE HAVE BEEN MANY CHANGES SINCE THIS THREAD WAS MADE. just hold onto your horses until i get the motor back in!
#29
Project P --- Pedospeed
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****, fergot to post the link!!!
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/fc-supercharger-write-up-711116/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/fc-supercharger-write-up-711116/
#31
Rotary $ > AMG $
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hey guys, i just wanted some opinions on this: i have an 86 gxl that has a paxton sn89 supercharger on it with the upgraded impeller (1200 cfm vs. stock 800 cfm) and pulley. although you are supposed be able to run the s/c safely on the stock NA fuel system, i wne t ahead and installed 550 cc secondaries, a walbro 255, and a vortech rising rate fpr, controlled by an S-AFC II (can never be too safe). however i recently blew the motor, although i kno it wasnt due to lean detonation because it was tuned pretty rich. (i beleive it was due to the high compression NA rotors + hot air charge due to lack of intercooler +old age of motor)) either way, while its being rebuilt i went ahead and installed TII rotors (lower compression) and plan on installing a water injection system for EXTRA safety. my question is, should i just upgrade the primaries to 550cc as well, or will this be even more overkill? either way, running too rich wouldnt be a problem since i have an safc, right? thanks in advance
I hope it works out and the fuel mods help. You probably need an ecu that will allow you to retard the timing as well.
Good luck!
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