you guys are gonna hate me....i have a few questions that have come up. What about fuel delivery? I plan on using an AEM fuel rail but would I need bigger injectors and/or an upgraded fuel pump? Sorry this slipped my mind earlier. And with the p&p, I would like to do a 3 angle p&p. Would I be able to use valves,springs, and retainers from skunk2 or the ITR and Portflow setup? Do you have any recommendations on the 70mm TB? Sorry to bother you...I promise this will be it.

 

Punk. :fawk:


Hey, we're here to answer questions (and learn), so don't hesitate to ask.

I would go with some higher flow fuel injectors just to be on the safe side. You may not NEED them, but personally I'd rather run some high flows at 60-70% than try to wring every last drop of fuel out of the stock injectors. Upgraded fuel pump... same thing. A quality 190 LPH pump, which is all you'd need, will only run $70-$90.

Valves, springs, and retainers can go either way no matter the P&P job. If you get Skunk2 Stage 1 cams, stick with the ITR/Portflow. With the Stage 2s though, I would personally grab the Skunk2 valvetrain.

As for the throttle body, there's several companies that make them, and I'm not 100% sure on what's best. I do know, however, that Erick's Racing has a 70mm at a decent price.

 

alright....cool deal.....so what cc injectors would that be(60-70%)? And how would a NOS setup hold up in this situation? Just for kicks.

 

The stock injectors are 240 cc/min and they are also used in the B18C5. Stock Prelude VTEC injectors are 310 cc/min, and you should be able to tune those in with a V-AFC. They'll fit fine on the stock fuel rail, you don't necessarily need to replace it.

The fuel pump you want is part number HLY-12-917 at Summit Racing. It would also be a good idea to use a B&M adjustble fuel pressure regulator to set the pressure at a reasonable level.

 

Just a couple tidbits of info, I recently ported a B18C head for a customer and installed the Skunk2 Stage 2 cams, gears, springs, retainers and oem size valves and had my customer (another shop actually) put the head on and get it running. Ran great up until VTEC then didn't sound right. Checked the cams which were set up at "zero" on the gears, then he retarded the exhaust 2 deg, no improvement, advanced intake 2 degrees, no improvement and as he was decellerating from about 8500, a valve broke and destroyed the engine.

After mocking up what was left of the head on another block with the cams and the vtec lobes locked on, it turns out that even with the gears set at zero, the valves were hitting each other. I'm still waiting to see whether they will offer any help with the situation. Moral of the story is that if you DO use those cams, make absolutely sure that you do NOT retard the exhaust or advance the intake. If anything, I would recommend advancing the exhaust by a degree and retarding the intake by two degrees for safety.

I'll let you all know how good Skunk2's customer service is.

 

Holley intank pumps are just rebadged Wallbro pumps. You can get a Wallbro intank pump with application-specific installation kit for ~$100. If you don't mind spending another $40 for the same exact unit That's about $40 less than the Holley pump, and it's the same exact unit. Actually, that Holley pump is 190lph, and you can get the 255lph Wallbros for ~$100 too, so it's up to you.

 

Why would the valves hit each other? Could it be a defect in the parts used? No offense to you or your work, but could it be something in the installation? Maybe something was missed. Like could it have been a freak accident? Just trying to cover bases.
If not use the skunk2 stage 2 cams...what would you recommend in place of it with the same gains?

 

If the overlap time has too long of a duration, and/or too much lift, the valves will be trying to be open at the same time. Since the exhaust and intake vavles face each other, that means that if both are open at the same time, the edges of the valves will get closer to each other the more they are forced open during the overlap phase.

 

so would stage 2 be too much? or would stage 1 be more applicable but still get reasonable gains?

 

qtiger....what are your suggestions? you gave me that setup with the stage 2 cams and the valvetrain.