Can I Run Crower 403's withour tuning?

system · September 4, 2002, 2:39am

I’m wondering if you have to get your cams tuned, I have a 90 Integra GS and am Planning on getting Crower 403’s without the springs.

Do I really need to get them tuned?

spikius · September 4, 2002, 2:58am

You’ll probably make more power with them tuned, but you don’t have to tune them. I’m running 62403’s untuned, with stock cam gears, and they work fine, and basically idle ok. I have some skunk2 cam gears that I’ll install once I get a chance to get to a dyno for tuning. I definitely feel a power increase, but I’ll probably feel more with some tuning.

92lsR · September 4, 2002, 3:36am

you will see good horsepower gains over stock , but haveing cam gears and tuning can maximize your power

system · September 4, 2002, 6:10pm

talk to G2Integrity. He first put his 403’s in w/ stock springs and left them at -2/-2. He ran really good numbers at the track, a 15.17 i believe. after he tuned his car, he found out that he actually got lucky and -2/-2 was pretty good. I’d recommend getting it dyno’d, just because you get more power. a fuel pressure regulator and fuel pressure gauge (B&M makes good ones, not expensive either) is a good idea to get even more out of it, and then go for a s-afc to smooth out the power curve. the s-afc also helps the bad idle. goodluck

system · September 4, 2002, 6:14pm

thx buddy,

how much will all this cost me? a fuel pressure regulator, and s-afc(???) installed. Do I really need a gauge?

I’ll talk to GSIntegrity, thx

system · September 4, 2002, 6:37pm

Originally posted by scooby_dooby
[B]thx buddy,

how much will all this cost me? a fuel pressure regulator, and s-afc(???) installed. Do I really need a gauge?

I’ll talk to GSIntegrity, thx [/B]

fuel pressure regulator should be about $50, the gauge you need for sure, it’s only about $30 (it sits in your engine bay, not inside the cockpit), and the s-afc should run you about $200 not installed. Installation you will probably have to ask G2Integrity. He’s on the boards.

system · October 2, 2002, 11:36pm

I talked to G2Integrity, he said I probably don’t need the s-afc since I live up here in the north where it isn’t usually that hot.

One thing I’ve been wondering though, is what side affect will 403’s have on my engine? Assuming I never go over 7000 rpm.

The one thing I want to avoid is oil, or carbon build-ups in my engine. Right now it’s in beautiful shape, very clean with not a trace of any sort of grime, I’ve heard 403’s can run pretty rough so I’m wondering if they’ll have an affect on the overall condition of my engine?

system · October 3, 2002, 1:40am

just wondering why would internals(such as cams) have somthing to do with the way the external parts of the motor look like…just curious…i would like to know…becuase i just took a long time and cleaned my engine bay and its not somthing i want to have to do often…??

system · October 3, 2002, 7:03am

Originally posted by scooby_dooby
[B]I talked to G2Integrity, he said I probably don’t need the s-afc since I live up here in the north where it isn’t usually that hot.

One thing I’ve been wondering though, is what side affect will 403’s have on my engine? Assuming I never go over 7000 rpm.

The one thing I want to avoid is oil, or carbon build-ups in my engine. Right now it’s in beautiful shape, very clean with not a trace of any sort of grime, I’ve heard 403’s can run pretty rough so I’m wondering if they’ll have an affect on the overall condition of my engine? [/B]

on my 140k miled engine, the cams killed the engine. The engine was running great, no problems stock. with the 403’s fried 2 pistons and i think it just wore everything pretty badly. i was basically driving a 2 cylinder car after about a month after the 403’s.

system · October 3, 2002, 7:06am

Originally posted by punk749
just wondering why would internals(such as cams) have somthing to do with the way the external parts of the motor look like…just curious…i would like to know…becuase i just took a long time and cleaned my engine bay and its not somthing i want to have to do often…??

internals mean things inside the motor, thus you can’t see it unless you pop open the valve cover or the head. umm… probably the only other thing is cutting the valve cover or something to expose adjustable cam gears for tuning purposes, and maybe some controllers and gauges here and there… but that’s it. if i’m understanding your question correctly, umm, don’t worry about appearance, it’s all internal, and plus, it’s a go fast mod rather than a rice mod. hope that helps.

system · October 3, 2002, 2:23pm

Yes you can run the 403’s untuned, but I’d leave the cam gears at 0,0 too.

I think the key to running these cams safely and effectively is the S-AFC. This ensures your air/fuel mixture is at optimum levels all throughout your power band. With the S-AFC, it is like the cams came stock with the car. Perfect idle, good gas mileage, etc.

S-AFC

system · October 3, 2002, 5:25pm

and damn it looks cool,

is this a good price/s-afc? it $319 US

http://www.modacar.com/products/Acura/Integra/MODAAPE/

it’s a little down the page, also I bet the s-afc really helps with the aftermarket intake manifold, true??

g2integrity, how involved is installing a s-afc? You have to install a FPR and gauge first right? How much would install be, or is it easy enough to do myself? I can basically pull a wrench, that’s about it.

oh, one last thing, what would an aftermarket throttlebody do for me? not much? assuming I have all other bolt-ons + cams + s-afc

system · October 13, 2002, 9:00pm

403’s

For Blizzzard

When 403’s phucked up your engine, did you do springs and retainers? What octane fuel were you running? Did you have valve clearences checked? Were you running adjustable cam gears?

XDEep · October 13, 2002, 10:45pm

Originally posted by Blizzard
on my 140k miled engine, the cams killed the engine. The engine was running great, no problems stock. with the 403’s fried 2 pistons and i think it just wore everything pretty badly. i was basically driving a 2 cylinder car after about a month after the 403’s.

ya man explain further. this should be like a sticky note or something unless you did something wrong heh

system · October 14, 2002, 5:55am

The only thing I did wrong was goto Import Builders in Orange County to do some head work. But I’m not sure what happened. Basically after 3 weeks my whp went down by 5, torque down by about the same. Eventually the idle became very rough, and I noticed a lot of smoke continuously coming out of the exhaust. I actually posted a video i took of it with the smoke coming out. I tried everything, but nothing fixed it. So i got a b20b and replaced the old LS. When I pulled the head, I saw that nothing was really wrong with the head itself. The cams looked like they were in good condition, retainers and springs were fine. Valves looked good…

the pistons however looked like they were shot. #4’s surface seemed like it was flaking off!?!? It was sitting at a strange angle as well. #1 had the same flake, but sat straight up. The other pistons looked fine. So I think it was something to do with the block, and the head was still usable.

if your engine is old like mine, perhaps the extra agitation can put it down the drain fast, like it did to mine. make sure your engine is healthy and young like G2Integrity’s.