New to forums, tried to search around for a bit... i have a few questions about this motor... i want to boost it... i already know that it uses all H23a1 parts being its JDM and not USDM.. so basically i have an idea of how i want to build this...

Bottom End
* weisco 87mm pistons (bored from 85mm)
* Eagle H Beam rods
* ARP head and mains
* K tuned balance shaft delete
* shimmed oil pump
* cometic head gasket
* polished stock crank

Head
* supertech or brian crower valve springs/ retainers
* Skunk 2 intake manifold
* 70mm TB
* BLOX 1000cc injectors
*AEM Fuel Rail

Turbo
* GTX3582R
* 44mm Wastegate
* Tial BOV
* 3" IC piping in and 3" out
* 4AN oil feed and return

Fuel
* Walbro 450
* 8AN Fuel Line

Trans
* Competition stage 3 clutch
* light flywheel

ECU
* Hondata s300

This is the build i want to go.. should i swap out anything? Is a G build better? What numbers can i expect? Any and all advice would be appreciated!

 

You will not be able to bore to 87mm on the stock sleeves. 86mm would be the max for 400whp, with room for more power if you have the block CSS'd. No need to shim the oil pump. ARP main studs are a waste for 99% of applications and also required the block to be line honed.

If you're gonna spend a lot of money on a build, start with the best platform you can so you end up with the best result for the money. In this case, you can build the block but you would be better off to skip using the F22B head and go with a DOHC VTEC head from an F20B or H22/H23A.

 

Why wouldnt i be able to bore 2mm over in the stock steel block? It would make the cylinders too fragile you think? Frm sleeves i completely understand... but this block is alot better. And why wouldnt i shim the oil pump to bump up the oil pressure? Arp mains are a waste??? Any other opinions?

 

Honda doesn't even recommend going 1mm oversized on a stock block for a standard OEM rebuild application. Going 2mm oversize will remove all the strength in the sleeves and simply will not hold up to the stress of a turbo application. I would not trust any machine shop that would bore one of these blocks 2mm oversize and send it out the door.

Shimming the oil pump doesn't increase oil pressure. It only increases the maximum pressure before the relief valve opens. Basically useless in a properly built engine with a balance shaft delete kit. The balance shaft delete kit will actually increase oil pressure across the whole rev range. Removing them also significantly lowers oil temperatures.

ARP mains are a waste of money unless you are going for a 1000whp+ build. You will find tons of other weak points before the stock main bolts become an issue. Stock main bolts have been used in builds up to 700-800hp+ with no problems. Even the stock head bolts will hold up to 500-600hp before becoming an issue but they are easier to replace with studs so it's generally more worth it.

 

Ok so i should keep the bore size stock and just get some forged pistons and rods to hold up the power... the stock bore size for this motor is 85mm with a 95mm stroke.. i cannot for the life of me find a good set of pistons that are made for this specific motor... if you know of a website i can check out that sells 500hp+ rated pistons for a F22B DOHC motor please let me know.. im at a dead end

 

The rotating assembly will use the same aftermarket parts as the USDM F22 SOHC engines. There are piston kits and forged rods readily available online for those.

 

Got a link for the kits? Still cant find anything... i found f22 **** thats 88mm bore...

 

Just searching F22 connecting rods or F22 pistons brought up multiple results on google. Eagle makes rods or there are other brands available on eBay. Shelf piston kits are available or you can contact KSTuned and they will have Wiseco custom build you a set of pistons to whatever spec you want. A slight overbore is desirable on a fresh build to ensure the cylinders are true and the hone is fresh. 85.25 or 85.5 would be my suggestion on a stock sleeve engine without CSS.

 

And if i decide to darton wet sleeve it what mm would you recommend going with?

 

87mm or 88mm to leave some material for future rebuilds if they happen to be needed.