You could save your self some trouble and go with the N47 head on the F54 block with flat tops. It's the ghetto way of doing it but several people seem to be alright with it.
I have partially done a megasquirt fuel only and it's not that hard if you know a little about computers and electronics. I got the already assembled Microsquirt and their generic harness.
If you do it make sure to add a 1k resistor between Negative- and Opto+, otherwise you can fry your MS.
Doing timing with MS is a little more complicated because you need to fab stuff for the hal or source a 280zxt dizzy.
Some people go with the 300zx NA springs instead of the Isky or Schneider springs for hot street/mild race. There is a debate if the Isky springs are to stiff or not for the typical hot street cam.
(I asked Isky but they are very unhelpful, so no luck there. I gave my money to someone else).
Cam selection is a jungle, here are some thoughts:
- Stay with a < 460 duration if you want to keep things simple and stay with stock drive train. Isky and/or Rebellos has cams for this. Not going to be a hot street.
- Over 7000 RPM and stock pistons might be of a concern
- Make sure to check both adv. and @0.050". Just adv duration is misleading for colt cams vs isky/schneider
- Most people seem to recommend doing a regrind (cheaper to)
- Check the dyno threads, sometimes they list what cam they used. It's good to get an understanding for what power curve you get.
- 290F or Isky L-490 would be my pick for a hot street and still something you can drive. (I ended up with something less brutal due to my racing regulations).
They are only $300 or so, so might as well.
I went with this clutch, http://www.advancedclutch.com/nx1-hdg6
1. I've considered the idea, but heard it's quite detonation prone so I'd rather go with the better chamber design for not much more effort.
2. Programmable fuel would be nice, programmable ignition even nicer. I hope to have both eventually, but we'll see what comes first.
3. The springs sound like a good idea to look into. I'm not planning to shim the springs, so I'll have to ask around and see how that will affect the spring pressure.
4. I'm planning to rev to ~7000 so not too crazy for the stock bottom end. Can selection is a whole topic in its own right but that isky .540 is looking pretty good at the moment. I have a few cams I can send to be reground so that should save me a bit.
5. I do have a set of headers on the car right now, just forgot to mention them. I believe they're msa 6-1 from pictures I've seen online.
6. Based on a few other builds I think I can get away with a stock clutch or just slightly stronger, so that's what I'll start with.
i was offering the head to ZHoob..i have a good set of headers too...reasonable...shipping sucks probably
I appreciate the offer, but shipping will be the killer on either of those. I think running the p79 is the way to go for me.
Way I see it
P79 needs shave, shims and maybe valve swap (can be done with lash pads)
MN47 needs valve seats replaced, valves swapped.
When changing cams, both will need a valve job, rockers, lash pads and springs
It's not different enough one way or the other to justify not using the parts I already have.