Building a new motor need advice

[wcpierson]

OK so I am new at rebuilding motors so I know this is going to be an experience but I wanna try to make sure I buy all the right parts the first time and do it all in the right steps in order so I would appreciate any advice from you guys as to what I should do and in what order and what parts you would suggest I use.

Here is my goal. Im looking to build a 6bolt motor that can push around 350-400whp. I want to be able to have the car as a street car and to be daily driven if i choose to do so. My questions are what rod/piston combo do you think I should go with? What turbo would you suggest I use to support that power without it being too laggy or annoying to drive? What steps would you take to prep the block( i picked up a bare block from atc250r) and have dont nothing with it, its kinda rusty and Def needs to be hot tanked.

What would you suggest on using internally on the head as I would like to rebuild a bare head. Valves? springs? Cams? Cam gears? So on and so on?

That is the basis of what I would like to know ahead of time I can worry about fuel and engine management later after I build the motor and find a shell to put it in.

Any advice would be greatly appreciated especially since it seems a lot of the people on this board have been in and out of the game a while

THanks a lot

[blcknspo0ln]

2.0 wiseco (or ross) with eagle rods (for only 400 awhp, 1g rod / 2g piston will do good too, use stock rod bolts if that's the case)
arp rod bolts
arp head studs
hot tank / deck block

mitsu comp headgasket

bc valve train
bc 272 cams
stock cam gears

fp manifold
borg warner S256 ET

ACT 2600 with street disc
ACT flywheel

[wcpierson]

why not 1g rods with wiseco(or ross) with arp rod bolts? Since I am going to have the block bored to .020

also what kind of compression ratio should I be looking for especially if I want to change out my turbo in the future ? What is the most applicable compression ratio I should be using?

[Nate Crisman]

For 400WHP you need nothing more than a good condition 100% stock motor oil pan to camshafts. You don't need cams, headwork, special valves, stronger pistons or rods, or any special hardware. The stock head-gasket and head-bolts will also work perfectly fine.

Im not saying you shouldn't upgrade any parts, Im just saying that for the power level you want, nothing is required other than it be in good condition.

The stock block internals are freakishly strong, the stock head flows very well, and the oem cams are not any major restriction to a 400whp setup. that power level is in the realm of bolt ons, you don't necessarily have to put a ton of money into building a race motor

[atc250r]

1G rods with 2G pistons is a nice combo but you'll have to weigh out the cost of 2G pistons + having the rods machined, against the cost of a set of good aftermarket pistons that will go straight onto stock 1G rods. If the 2G/1G combo is significantly less then just go with that. 1G rods are known to reliably support 500hp so I don't see any reason to go with Eagles. For the head go with Ferrea valves and BC springs. Let me know if you need the number for my machinist. He's done head work for a couple of guys here with great results. He did the head on BigT's car, you can ask him what kind of job my buddy did.

EDIT: Shouldn't this be in the tech section?

John

[TuRBoTaLooN95]

I'd go with the TD06 20G for a nice streetable turbo capable of big power.

[TheGreenMonster]

If I decide to keep my car, I dont plan on going any more than good pistons on my big rods, headstuds,mitsu HG,BS removal,light port work and valves( I have BC 272s and springs/retainers). I have a semi-built trans (4spider/double sync 2nd) and my goal is to run the shit out of a 50trim and have it un-DSMlike reliable.
So in short, I also believe that keeping it relatively simple is the best bet for 350-400whp.

[atc250r]

I'd go with a 50 trim bolt on over a 20G I think. It's cheaper to buy and easier to install, especially if you get an internally gated one.

John

[BigT]

He did the head on BigT's car, you can ask him what kind of job my buddy did.

John

John's friend, Mike, gets two thumbs up from me. He put together my head and ported it. I was able to flow 45lbs/min with a 20g at 23psi. Not bad for a "choked" 2g head. :roll: I'll also be using him to build my block later this year.