makin my 420A turbo worthy

Hey everybody lookin for a parts list to upgrade my car and make it ready for a turbo, i know that i can just slap one on there but i'd rather have a decent engine first, can anybody help me? PLEASE STAY ON THE SUBJECT

first thing, you will want to rebuild the engine...even though you may not need every part, you dont want to put alot of money into the engine only to have it fail because of a 40 cent bolt. i have found that the crankshaft in the 420a is sturdy, so that isnt needed, so long as it is in good shape. you will need new connecting rods, and turbo pistons..check with crower or eagle on the rods, and JE on ths pistons.

i actually talked to HAHN and they gave me a list of things: compression check, leak down for the valves, pistons, rings, connecting rods, head struts, valve job, boar the block, port fueler, injectors, and stage 2 kit w/ boost controller. that's the timeline they gave me so that's what im doin, im just curious if there is anything else i need to do...

You will need all that and some luck. I assume you are only going to bore the block to make for a tight seal around rings and pistons. Your not actually trying to bore out that engine for more displacement, or are you? Make sure you get the right size pistons after a bore. And once you do a compression test and leak down for valves, there is a good chance you will need to replace some more parts because often they find leaks around valves and, as you know, you've got sixteen of them. They will probably give you a percentage of how much they are leaking. Like 70% leak on the second intake valve in cylinder 2. Something like that. And with that, you may need to buy some more valves. Depends on who does your work. You still don't just want to buy a GST? Good luck, god speed.

honestly, what everyone is getting at, if youre going to build this 420a turbo, build ground up...replace pretty much everything shy of the block, and crank. it sounds harsh, but the 420a that i have seen, heavily built, did just that

quote:

ORIGINAL: RCJr9186

i actually talked to HAHN and they gave me a list of things: compression check, leak down for the valves, pistons, rings, connecting rods, head struts, valve job, boar the block, port fueler, injectors, and stage 2 kit w/ boost controller. that's the timeline they gave me so that's what im doin, im just curious if there is anything else i need to do...

Portfuler? Valve job? ...... lets slow down a bit

Facts known
-injectors max out at 10 psi
-rings fail after 13 psi
-rods bend/snap at 15psi
-stock pistons melt at 15psi
-ignition system obsoleat at 15psi

From what you have listed It sounds like you want to go big. So you will deff need a new bottom end, www.exileracing.com, compleat short block for 1800. That includes oil pump remanafactured and balanced crank shaft, milling oil pump, bearings, forged rods, forged pistons, total seal rings, block honed and blueprinted.

Next youll need a head job, the head on the 420a flows pretty well but if your going with high performance you will want a good port job. www.Conceptillusions.com offers a good service for 400 its a total port, its so nasty that you NEED a bigger throttle body, intake manifold(aftermarket or ported) and the exaust manifold ported. Also you will need new valve seals, seeing how there will be alot of stress on the old ones. I also reccomend new springs, valves, rockers, and retariners. All of that can cost up to 1400, or atleast thats what I priced out for me self for a compleat built head.

For the turbo the the hahn 2nd stage comes with a nice turbo that can easily support 300 hp. If you want higher than that you will want to get something like a s20g. The fmu that comes with the kit sucks and should be replaced with a vortech sfmu(rock soild fuel pressure every time). The Injectors that come with the kit max out at 15psi also, matterfactly the whole fuel system maxes out at 15psi. That needs to be replaced with eiter a 8 injector setup (portfuler or custom) or a standalong unit which is more expensive. Turbo kit 3,000 + portfuler 1500 comes to 4500.

The igntion is no big deal get an kit from www.howellautomotive.com 700 shells, colder plugs 12 shells, wires, 80 shells. Thats got you for 791.

Lastly cluch/tranny. I cant even give you a guess on how much a stave v cluch is going to run you. If you do need a new tranny I recomend the neon r/t 420a tranny, that can go for 1200.

Altogather be expected to spend anywhere from 9600 and up, my prices are rough and do not include the cost of labor, shipping, tax, or other little odds and ends. After that you can really mess people up... on the track that is. Like I said before it depends what you want. If you do everything that I listed you car is going to be pretty serious, low 12's. Me on the other hand I wnat a built bottomend and a built head to run 15psi, no more. I'll be low 13's and thats fine for me but if you want faster that ^^^^ is what your going to have to do.

sorry to butt in RC but... ^^^^ see??? he gave you your list!

yes, i can see that. thank you captain obvious and im glad he took the time to tell me these things instead of point me somewhere i don't wanna be led.

haha lil touchy rc??

no, not touchy but you keep tellin me the same thing over and over when i've told everybody that im NOT going to trade my car... it doesn't matter if it's the 420a or the turbo engine, i would STILL rebuild the engine and it would still cost me the same amount, so there's no need to spend and extra 2000 for a car when im gonna get the same results... i wish everybody could just understand that.

Do i sense some hostility here? I mean really he didn't ask what was the cheapest he asked what he needed to do. If he wants to put that much into his car let him.

im just hoping that this topic isnt brought up again for a while, maybe il compile a stickey if i get around to it. i mean this subject comes up in a new post every week

no, wrong, this subject comes up every day!!!! there needs to be one saved forum JUST for this subject...

quote:

ORIGINAL: g9s5t

you are a god damned idiot

I guess I am to along with 8524 members of www.****.com. Ever been beat by a 420a??? Its a rather humbling experience.

i am really surprised by the rampant anti-420a talk...the factory FI guys need to realize that 'while its only a neon motor', they can be built just like any other motor...

yes, the 4g63 is stronger stock...Stock..

but with ALL of the neons sold, performance parts became in demand, and now there are soem very fast 420a powered cars running around, both FI and NA

Many of you guys that remember me from a while back know I've always been a member here and been through several different setups....4G64 with head swap and turbo along with a GSX I have now and my daily driver is a 99 Eclipse GS OZ edition that I have turbo'd. Those blocks are very strong to a point. The weakness in the motor is the rods. You can run around 9 psi on it daily driven for a while. I drove around 10K miles on 10 psi before I pulled the motor and put JE pistons with Eagle H-beams and stock crank. I have a slight port on the head with crane springs and retainers. I now run 14 psi daily and 18 occasionally if I ever feel the need. The 420a has a few more steps in making it fast but truthfully its worth every bit of it. There are aspects of that motor that you don't deal with on the 4G63....Timing... Just thought I'd throw in my 2 cents...

how do you feel about the Eagle H-beams compared to crower rods?

I can't remember what the rating on the rods is...450HP? i think??.....for the 420a thats ALOT of power and most will never reach that point. Especially being front wheel drive its extremely expensive to make them fast with that much power. I've been very happy with my block and its only a .020 bore with standard JE low comp. pistons, standard H-beams, Melling oil pump, ARP Main Bolts, ARP Head Studs, and Stock Crank. Only problem with the 420a is injectors. I maxed my stockers out at 5 psi due to wear and tear and being clogged. The car is no competition for my gsx by any means but i'm sure if i spent the same amount of money on it as i did the gsx I'd have something to deal with.