Post by
420sxse »
https://forums.nicoclub.com/420sxse-u27656.html
Tue Apr 25, 2006 12:43 pm
My opinion is that you should wait and save money. I'm in a similar position, but after researching, I started saving my $s while researching more. I'm too worried about long term reliability to do it cheaply. The KA CAN hold 250bhp or so, but for how long? (especially if it has 100K+ miles on it). You likely aren't the first owner, so how was it taken care of previously? Are there any surprises lurking inside? You simply don't know, and a rebuild is very wise. I have a spare KADE that I've been building up. I refreshed the head ($200 including machinists time and parts). I replaced all the vacuum hoses, secondary air lines, coolant hoses etc. That all ran about $150 in parts (do it while the engine is still out, or you will be sorry). You will want to replace the timing components before putting that engine in (again, you will b sorry if you don't). The timing chain guides are like $50 each (x2) and the tensioners are like $75 each (x2). I got a complete gasket kit from Nissan for a little over $200 (minus the throttle body gasket and a couple others...I forget which). I also replaced the knock sensor, water pump, and thermostat. It has been a while since I got these parts, so I may be off on the prices, but you get the idea. I'm about to finish the bottom end, and am going to order the Advanced Rebuild Kit from AMS that is $2039. It includes Arias pistons, Crower rods, Clevite bearings, ARP head/main studs, Cometic head gasket, copper exhaust gaskets, full gasket kit, and timing parts. It's not a bad deal, he quoted me a bit less than $1600 because I don't need the gasket kit or the timing components. My machinist estimated $275 for basic block work and assembly. And now I'll start saving for the turbo kit/fuel/ems. I'll probably wait until I have about $2K, and start with a basic setup that can be expanded if I want to increase boost. This is obviously much more than you are wanting to do, but it's an idea of the other extreme (well, maybe 1/2 to 2/3 of extreme) but if you have a spare block, and a decent engine in you car, why not do it right and be patient? It sounds like overkill, but you really need to lower the compression ratio especially since the pistons are cast, I don't care what anyone says (some mods will tell you not to, and I think that's irresponsible). Shims between the head and block are a bad idea, so that leaves pistons or cutting material from the combustion chamber. So, heres my logic a: You should rebuild the block (you should), and b: it's going to be expensive to do that (it IS), and c: you are majorly increasing the stress on the internals (50-75 is major, and double is extreme to me), then d: it's wise to upgrade at least the pistons and bearings, and there is a thread a little ways down where someone suggested it's a bad idea to upgrade the pistons but not the rods. You should check on that. The thing is, the engine's ALREADY OUT so do it up good, because it will be very expensive AND time consuming (or just obscenely expensive) to fix problems with the internals later, plus the car will go down for a bit. There's a gearhead mantra "Do it right, and do it once". It will cost quite a bit more initially, but you will be a lot better off in the long run. $500 for a turbo kit is low (you'll probably pay that for the turbo alone. A little less if you get a rebuilt one). Adding a turbo to a N/A engine for that much and having it run reliably is ridiculously optimistic. You need to do more research anyways, so save money during that time and readreadread this forum and books on the subject.