B18A1 Build Up
 

Okay so now that I have decided on the 92-93 B18A1 motor I need some more help. What all do I need to do to the block to reach my goal of 400 fwhp? I know I'll have to sleeve it but I want to stay at the stock bore. Can I bore it to say .030 and then resleve it to stock bore? What else willI need to do to hold that kind of cylinder pressures?

RE: B18A1 Build Up
 

Somebody correct me if I'm wrong, but I don't think you need to sleeve for 400hp. I believed it to be necessary when upwards of 550hp.

RE: B18A1 Build Up
 

Still better to be safe than sorry. But if that's true then I don't have to do anything else correct?

RE: B18A1 Build Up
 

Get some low compression pistons with new rodsand new valvetrain...like dual valvesprings and some titanium retainers...andsome forced induction cams

RE: B18A1 Build Up
 

I'm planning on doing all that but I need to build the block first to be able to hold that kind of cylinder pressure.

RE: B18A1 Build Up
 

I understand you feel the need to reinforce your cylinder walls, but do a little more research. You may be able to save urself the extra 6-800 bux on something more necessary. Not tryna come off as an *ss, just would hate for u to waste ur time + $. I know a guy locally who's running ~440whp with just the list powermidget gave + a good tune. Here are a bunch of examples of big power out here in PA from a local shop called Evans Tuning: http://forums.evans-tuning.com/index...c5af56d4347c9e

I'm sure those guys can give u another perspective rather than just mine. Hope this helps.

RE: B18A1 Build Up
 

Not tryin to be anal here but money really isn't a concern on this build. Would it not be better safe than sorry? I mean it's not going to HURT the block being sleeved, I just want other options on top of sleeving the block to fortify it. I mean can I do anything else to make it stronger?

RE: B18A1 Build Up
 

In that case I'd say sleeving is ur best bet. Forged rods, new piston rings, and maybe a double or triple-layer headgasket. Add that to powermidget's list and u should be set.

RE: B18A1 Build Up
 

FI cams blow. ITR/CTR cams ftw.

RE: B18A1 Build Up
 

I'm no where close to buying cams yet...bottom end first then top end. But when I do more than likly they will be Comp Cams.

RE: B18A1 Build Up
 

you need to be more specific on what exactly you are going to be doing with this motor, are you going to be running a turbo, nitrous, N/A, supercharger, this will determine what you need to do to the block and what kind of bottom end you need to build, if it was me i would definately sleeve it if you dont you will have problems in the long run especially if your goal is 400 hp

RE: B18A1 Build Up
 

you will not need to sleeve for 400hp.

GSR intake/ITR exhaust is a great turbo cam setup.

RE: B18A1 Build Up
 

i look at it this way, i would rather spend the money now and sleeve the block than have to go back and do it later when you upgrade or break something, its easier to do it now than have to go back in 6 months and rebuild the entire motor just so you can turn up the boost

RE: B18A1 Build Up
 

That's the way I'm looking at it. I'd rather spend the money now while the engine is out of the car and since I'm already going to be at the machine shop getting them to balance and size match the crank why not just have them sleeve the block too? I want to be able to drive this car to and from the strip so I need it to be fairly relaible. I plan to reach 400 hp w/ nitrous and a turbo. I'll have more specs later on but for now if I do fored h-beam rods and an Eagle crank is there anything else I could do to the block just in case, for my piece of mind. I'd much rather be safe for years to come than sorry in 6 months.

RE: B18A1 Build Up
 

why run nitrous,you should easily be able to accompplish your goal of 400 hp with a decent size turbo, with a sleeved block and forged internal you can run 35 to 40 psi all day long and never have a hick up as long as you have a good tune, the shop i used to manage built 2 different b18 s with sleeved blocks and forged internals and each of them put out over 425 hp on 20 to 25 psi of boost

RE: B18A1 Build Up
 

cp pistons all the way man. best piston money can buy

RE: B18A1 Build Up
 

More money does not = better. Use the OEM crank. It will handle more power than you know how to throw at it, no offense. Stock sleeves should be fine. They may need to be bored a bit, but that's no big so long as you make sure your shop orders properly dimensioned pistons for the bore. If you just have to sleeve, make sure to get 84mm bore. 81 would be throwing money away.

RE: B18A1 Build Up
 

sleeving is way overrated, you can make 400whp with forged rods, pistons, a set of cams, and a correctly designed turbo setup with the right tuning and fuel management.You can get damn near that power from a stock B18A

RE: B18A1 Build Up
 

Thanks for the info guys. I know more money doesn't nessasraly mean the best part. The one reason I'm going w/ Eagle cranks is because I've had great success in the past in 302, 340, and 350 engines. There billet and knife edged straight out of the box. But one more question...What did you mean Kedaweithat I would just be throwing money away if I went w/ the 81 mm bore?

RE: B18A1 Build Up
 

Because they'll charge you the same for either bore, and you'll make more power with the 84.

RE: B18A1 Build Up
 

81 mm is the stock bore correct? I'd really like to stay stock bore just to stay axzy from the hasssel of oversized pistons and piston rings. Besides if I stay at stock bore then if I ever do blow the engine I can go back in and have the cylinders rebored to .030 over. If I do it now then I want be able to do that. I'll just be SOL.

RE: B18A1 Build Up
 

OS pistons aren't going to cost you any extra, forged pistons are basically custom parts anyway. And if something does happen you can always bore to 84.25 or 84.5mm, which are the same service limits as the 81mm sleeves will be.

Again, there is no reason not to.

RE: B18A1 Build Up
 

YOU MUST sleeve your b series blocks if you are going past 14 psi of boost!!!!! dont take a chance. hondatuning.com and sport compact magazine will both tell you this. I am doing the same **** as you are!