(REFERENCE) The Upgrading a Stock Rx-7 Thread
Senior Member
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From: Texas
Junior Member
Joined: Jun 2007
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From: Manitoba
Not to sure about K&N
I know K&N filters are supposed to increase airflow but the problem is that K&N is a dry element with much more open element letting dirt get in, I'm not sure what an alternative would be but I know for diesels the is S&B which is apparently pretty god. I got this from my boss who worked at the calgary drag strip and an autoparts store for fifteen years, I'm trusting his judgement.
Also K&N are probably the way to go if you stay in the city and there isnt to much dirt and grime flying through your intake, my best guess
I know K&N filters are supposed to increase airflow but the problem is that K&N is a dry element with much more open element letting dirt get in, I'm not sure what an alternative would be but I know for diesels the is S&B . . . Also K&N are probably the way to go if you stay in the city and there isnt to much dirt and grime flying through your intake . . .
I have a friend who is a calibrator for an OEM, and he found no gain on a popular SCCA racer when a K&N was swappen in -- or even if no air cleaner was used for that matter. Wasn't the weakest link . . .
BTW -- my car's a turbo FB, so I have no OEM baseline to compare to.
Joined: Feb 2006
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From: London, Ontario, Canada
The more important aspect of a K&N filter is that they are reusable, so for $40 you have a filter for the life of the car, instead of a new one every 30K. If you change your regular filter as needed it should not flow that much worse than a brand new K&N.
Newbie
Joined: Jan 2002
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From: Hopedale, Ma
Question on mods to carb
sorry it was late at night and i was bored
ok i wanna contribute..
mods- put a 48 IDA weber in... or if u wanna use it as a daily driver... just modify the stock nikki carb.. to open the 4 butterlys together or faster..
this should be as good as the weber and wont use so much fuel...
How do you go about modifing the stock to open the 4 butterflys together or faster??? you can email me direct if Ok with you.
Thanks
Steve Raj
steve_j_rajcula@raytheon.com
Steve, do a search for "mechanical secondaries" or "mech secondaries". You'll get all the information you could ever want. 
Essentially you remove the vacuum operated diaphragm from the carburetor and wire the linkage for the primaries and secondaries together. The linkages are setup progressively so that the secondaries will begin to open when the primaries are at about 1/3 capacity. Both the primary and secondary butterflies should be fully open at the end, thus giving you true wide open throttle. You'll also want to look into Sterling's accelerator pump modification. Just do a search for "accelerator pump diaphragm" or "AP diaphragm". Once again, you'll find all you'll want to know.
Good luck and welcome,
Jamie
Essentially you remove the vacuum operated diaphragm from the carburetor and wire the linkage for the primaries and secondaries together. The linkages are setup progressively so that the secondaries will begin to open when the primaries are at about 1/3 capacity. Both the primary and secondary butterflies should be fully open at the end, thus giving you true wide open throttle. You'll also want to look into Sterling's accelerator pump modification. Just do a search for "accelerator pump diaphragm" or "AP diaphragm". Once again, you'll find all you'll want to know.Good luck and welcome,
Jamie
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From: Charlotte, NC
need hood
Joined: Oct 2006
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From: Kansas City
im 16 and i bought this rx as my first car, my friend crashed it but not to bad, so i bought 5 way adjustable tokico's, with pro-series eibachs, and poly bushings for suspension ( i also had to replace a control arm and ended up getting adjustable ones and then didnt use them and got one stock...so if anyone wants to buy these let me know), for the engine i got a DEEP SUMP OIL PAN now i can hold like a liter and a half more than stock, and rb headers to a catco converter to a 2.5 inch mid-pipe AND THIS IS WHERE I F***** UP...DO NOT BUY A PACESETTER MONZA EXHAUST THEY DO NOT SOUND GOOD, N E WAYZ I CHOSE TO IGNORE THAT, i also got a better distributor rotor and cap, some ngk wires and ngk multifire plugs(these are awesome and affordable), the rest of my money went into a motherf***** transmission swap from auto to manual...but hey now i can fix and build anything, we are swapping out my rear axle for a gsl-se and my buddy at dyna-trac is going to rebuild it and re gear it so my car should be fun and fast n e wayz the only thing i listed that no one else did is that deep sump oil pan...
also, i would like to have a link of someone who would mod a nikki for me, i live in a small town where the way to fix rotary engine problems is to "drop a 350" in it. i hate it, so i need all the help i can get from other places, i only know of two people who can work on rotary engines here and never heard of being able to mod the nikki instead of doing a holley or webber swap. thanks.
Dangerous Darren
Joined: Apr 2008
Posts: 15
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From: Kokomo, IN
i know what you mean, when i got mine and was trying to get it running i got so tired of tards saying "put a small block in it". it's an rx-7, it is supposed to have a rotary motor. i like my wierd looking little wankle motor thank you, i will keep it (or at least some type of rotory, i saw a very interesting 1st gen with a turbo cosmo 2.0 taking a 350z's lunch money...lol)
Joined: May 2002
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From: Ottawa, Soviet Canuckistan
If you want a modded Nikki, the guy to talk to is the guy who started this thread : Sterling.
Due to vendor rules I would not be able to discuss specifics here but if you visit his website at www.sterlingmetalworks.com you'll be able to get some info and contact him.
As for the "multi-fire" plugs, I think he was talking about the stock NGK BR8EQ-14 and BR9EQ-14 plugs that have four spots for the spark to jump to. They don't actually fire multiple times (unless you install an MSD ignition box, but that's another topic altogether) they actually only fire once, but having the extra contact points means better chance of being able to spark on fouled plugs.
Jon
Due to vendor rules I would not be able to discuss specifics here but if you visit his website at www.sterlingmetalworks.com you'll be able to get some info and contact him.
As for the "multi-fire" plugs, I think he was talking about the stock NGK BR8EQ-14 and BR9EQ-14 plugs that have four spots for the spark to jump to. They don't actually fire multiple times (unless you install an MSD ignition box, but that's another topic altogether) they actually only fire once, but having the extra contact points means better chance of being able to spark on fouled plugs.
Jon
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From: maryville tennessee
yo i have a some what stock 82 rx7. the only thing thats been done is the spark plug wires and exhaust. anyone that know of cheep-ish upgrades for me email me vipernic@juno.com 12a motor by the way. thanks
Dangerous Darren
Joined: Apr 2008
Posts: 15
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From: Kokomo, IN
yo i have a some what stock 82 rx7. the only thing thats been done is the spark plug wires and exhaust. anyone that know of cheep-ish upgrades for me email me vipernic@juno.com 12a motor by the way. thanks
^^^ what dangerousdarren said ^^^
