what is the power capability for a stock engine B18A/B that is turbocharged?
 

Hi I was just woundering what would be the max you could boost on a stock sleeve b18 non vtec if it had forged 0istons and shott pined rods with arp rod bolt. And how much the max boost would be on a stock sleeve b18 wit h beam rods and forged pistons on a daily driven e85 tuned car

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

Most people consider around 400WHP on stock sleeves to be the point of diminishing returns and exponential risk with the OEM B sleeves.

With a stock non-VTEC head I'm not sure what your numbers will end up looking like. Don't get a huge turbo.

Boost pressure is irrelevant to the engine holding the power or not. 10PSI on a GT28 is not the same as 10PSI on a 6266.

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

300-350whp for stock Rods, the rods would be my biggest worry especially with how much torque a turbo ls makes at the 350whp mark.

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

^^ Agreed. Stock rods will blow before the sleeves. Even shot peened with ARP bolts. Shot peening doesn't add any strength to the material anyway.

With aftermarket H beams, it's gonna be a mixed bag beyond 400whp as was already said. Some get lucky and can push farther, some don't.

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

330 whp be fun, run 12s and last for ever..

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

Considering LS has both worse Rod stroke ratio and rod width id say dont go over 8.000 rpm and get a turbo on the big side. Early torque hit with a GT3071 will be hell compared to the same hp target with a GT35.Off course your trading drivability and fun with reliability...

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

Derp, forgot he's using OEM rods. I'd say low 300s then as well.

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

Low 300hp, depending on what turbo you're planning to use.

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

270-300 wheel HP if you keep the redline stock. Less if you plan to rev it up high because of the rods, and no more than 325 to 350 wheel hp because of the stock sleeves if you have done a rod/piston upgrade. ;)

Also, the lower boost pressures the better to meet these target HP numbers... if it takes 25psi to get to 300 wheel hp, it is going to break.

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

I guessing the consincses is 300-350hp. What is I up greaded the rods and run a vtec head. What's the capability of the stock sleeves. Should a block guard help at all. Whats a good one that dosen. Have cooling issues

re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

Go with CSS instead of a block guard. Standard CSS is rated to 700 hp on stock sleeves. If you're going to do rods, you might as well do forged pistons too. VTEC head is a good idea.

Re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

^^ This.. Go with CSS as your typical "block guard" is garbage. The CSS process is more expensive but, also comes with a guarantee. Worth it..
VTEC is debatable. In my first build I disabled VTEC while tuning. It still pulled really hard. Felt great. When enabling VTEC again, it was noticeable but, meh.. Could live without it. I believe that with a boosted application, VTEC is honestly negligible. On N/A, VTEC is necessary. Just my opinion though. :cheers:

Re: what is the power capability for a stock engine B18A/B that is turbocharged?
 

I think we've answered everything. The OP can go to the B18A/B Turbo LS setups for more information.

Turbo B18A/B setups page