<font face="Verdana, Arial" size="2">Originally posted by chim15:
Besides ECU tuning (possbile OBDII-OBDI swap required - spec'd to mods), and valvetrain upgrades (springs, retainers), would you anticipate any fuel delivery issues coming up with like the stage 2 cams? Would you need bigger injectors, upgraded fuel pump, etc.? I assume that tuning the ECU would require remapping the fuel. What about ignition upgrades? New coil, new ignition control? So many questions to ask and parts to buy, but so little money.
I guess what I'm asking is if someone like say you guys, 71dsp or VeeTec, were to go about getting the Crower cams, what would be your basic blueprint. while I know I'll get answers like "It depends on what you're looking for outta your car" and "Evey car is different" I'm just looking for some basic info to research. Thanks to anyone who answers.</font>
So, first you pick the cams. You will need to get valve springs and retainers that are compatible with the cams. If you are doing cams alone, I don't think any fuel upgrades would be necessary. I also wouldn't worry about ignition upgrades. Cams alone aren't going to give you 30 hp, it just doesn't happen.
Now, if you do intake, header, exhaust, cams, etc. then you might want to look at your AF ratio and perhaps richen things up a bit with a VAFC or other fuel computer. An ignition might not be necessary, but it won't hurt. Something like an MSD 6AL is a good choice (I am looking into the 6HVC, but it's expensive!). Also, running on the edge of detonation isn't a good idea, so a J&S Safeguard is a good idea. The J&S won't buy you any performance, but it will save your engine if you run into trouble.
Now, to install the springs and retainers, I would remove the head. You can do it with the head on the car, but it's a bit more involved. If the head is off, you might as well get it ported! So, now you really need some type of fuel modification, but nothing past a fuel computer. Again, a J&S is a good idea.
I haven't mentioned ECU tuning because right now that's not possible on 97+ ECUs. I am doing an OBD1 swap though, and for those of you with Base 5Gens, this is an option. I had the ECU reprogrammed by Japanese Automotive in Canada.
The way to look at it is, the more power you're making, the more you will need additional fuel mods, ignition mods, etc.
Now, let me get up on my soap box and say something. Engine building is all about combinations. Just because Crower cams with xxxx grind make 20 hp on "Joe's" car doesn't mean that it will make 20 hp on yours. It might only make 5 hp. It depends on your setup. So if you have the head ported, it needs to be ported with the cams in mind. Same goes for the header, intake, exhaust, etc. So, don't go by dyno numbers alone unless your setup is similar (which goes out the window if you have any headwork done).
I could tell you my blueprint for my car, but that's a secret!
not really, if you want to know, just ask!
North Texas Prelude Owners Group