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The A code would probably have the stiffest spring rate for all the Mazda B code VAFs, but like others are saying (and from personal experience as well) you can fit other VAFs from other manufacturers as long as they share the same voltage sweep (max out at 5v) and the pin order is correct. I used an MK3 Supra n/a VAF and it worked great for my car...been thinking about messing with it lately too since it's not on the car anymore.
I bet the best VAF for spring tension would be the Toyota variant though...Supra VAF for example is rated for a 200HP L6 engine, compared to the B code which is aroud 140hp iirc. I'd love to mess with an ST185 VAF since I think they have more HP than the Supra, or the RX7 turbo.
I would never under any circumstances suggest using an ST185 AFM. They're on a 200hp motor, but they're also the source of why those cars pretty much run like crap 80% of the time.
You would probably crap your pants at the obscenely huge driveability and power increase you get by swapping those cars to Gen3 electronics. (ST205)
Personally it doesn't take much more than 2 hours to pop off the bottom VAF plate and get in there with some high grit sand paper and metal polish...my VAFs look brand new on the inside because of this lol. Just make sure you use a good RTV silicone to seal her up with (and be VERY light with the application). I had a "sticky" spot in my VAF because of too much RTV leaking into the body causing interference with the flapper door.
If the spring is in there at all, it shouldn't jam open and stay open. Something is catching.
If we're talking about the turbo just forcing the damn thing open and staying there well before it ever hits max boost, then you're gonna have a bad time.
it's basically a ****tier/more annoying version of what happens in first.
turbo wants all the air, air meter has a heart attack, car falls on its face/dies.
had to bail on my snowboarding trip this weekend because of this ****, so I'll take it apart later this week and fix it... maybe I'll even make a new cover for the guts since I lost the last one on a 3-2 upshift.
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03 Accord DX: K24/5MT, peasant-spec old man's car
92 240SX: KA/T25, nerd mobile
huh. maybe some mice ate the fancy Apex'i filter and got jammed in the air meter door. might explain the chirping noise when that lazy-ass turbo starts spooling...
I know it's compressor surge
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03 Accord DX: K24/5MT, peasant-spec old man's car
92 240SX: KA/T25, nerd mobile
Well, maybe not.... We (my grandpa, my dad, and myself) cut the roof off of my old protege race car, so that we could get the roll cage out in one piece. We don't want to cut the roll cage up, as it's just not a good idea to cut up a roll cage and weld it back together. First we had to cut the windshield out, and then we drained the gas tank, and removed the seat and the seat belts. The car is wrecked anyways, so we took the cutting torch and cut the doors off (they were welded shut for racing) so that we could get at the roll cage easier and then took a sawzal and cut the roof off. Still have to cut the roll cage out, but that should be easy. The hard part is cutting the new race car's roof off correctly, so that we can weld it back in place without any trouble.
Anyways, here are some pictures:
My family has lots of bg's!
2003 Ford Escort ZX2: Project car/future daily driver. Built Ford Tough (With Mazda Stuff)
1999 Escort ZX2: Daily driver/beater. Going to be replaced by the '03 next summer.
2000 Escort ZX2 S/R: bought wrecked, going to use as parts car
1992 Protege LX: My old race car. Just a wrecked shell right now. Waiting for scrap to go up so that I can get rid of it.
1992 Mazda 323: Race car
1992 Escort Gt: My grandpa's old race car
1994 Escort GT: My grandpa's new race car.
Parts cars; 1993 Escort Gt, 1995 Escort lx
92 Mazda MX3 GS> For sale, $1750 OBO
94 Escort wagon--BP swap coming, VF10 Turbo, COP, EVO ECU, 03 ZX2 front end conversion "Hold yourself accountable before you are held accountable"
EV14 330cc@3Bar injector kits available.
EV14 GT500 injector kits available for the BP. 610cc@3Bar.
EV14 925cc@3Bar injector kits available
BP Forged H beam rods available now
KL Forged H beam rods available now
K8/KF Forged H beam rods awaiting test fit
FS Forged H beam rods awaiting test fit
F2 Forged H beam rods awaiting test fit FE3 Forged H beam rods coming soon
Mitsubishi 3.8 MIVEC rods coming soon
Aluminum CAS/Distributor caps
BP oil jet eliminators
EV14 fuel rail spacers
More stuff coming soon.......
yup. The new car is having it's roof cut as well. It's not going to be perfect, but it's a race car, not a show car, so it doesn't have to be perfect. But it's still going to be tricky to do it correctly and not mess up the new car too badly. lol
My family has lots of bg's!
2003 Ford Escort ZX2: Project car/future daily driver. Built Ford Tough (With Mazda Stuff)
1999 Escort ZX2: Daily driver/beater. Going to be replaced by the '03 next summer.
2000 Escort ZX2 S/R: bought wrecked, going to use as parts car
1992 Protege LX: My old race car. Just a wrecked shell right now. Waiting for scrap to go up so that I can get rid of it.
1992 Mazda 323: Race car
1992 Escort Gt: My grandpa's old race car
1994 Escort GT: My grandpa's new race car.
Parts cars; 1993 Escort Gt, 1995 Escort lx
im sure yall know to square the car and brace it (a pllar, b pillar, rear qtr) before cutting the roof and and have panels flex and go out of alignment.
My car is a Vazondissan. Part Nissan. Part Mazda. Part Ford. Part VW. Part Honda.
1993 Protege - DX with LX upgrades. Still rockin' the SOHC. Custom HID headlight Retrofit.
2009 Mazda 3 - Finacee Car. No power nothing. About to trade in for a 2014 Mazda 6 Sport.
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