Okay, I'm arguing with myself over getting a turbo for my civic. I'm not sure whether I'm gonna do it to my SOHC engine or swap to a B18C1 or C5 yet, but this question should (more or less) apply to either case.

I'm thinking about a Drag III turbo kit, but I want to up the psi (not worried about streetability at this time). I'm still trying to get some more knowledge about turbos, I know a lot about superchargers but turbos are out of my field.

Basically, I'm wondering what needs to be built to up the pressure without blowing something. I have the bad feeling that someone is gonna come back and say "Everything"... If someone could point me in the right direction, I'd appreciate it!

 

Don't buy a B18C5 for turbo! Too high of compression. The B18C is good, but, if you want to save money, get the B18B non Vtec.

Stock motor can handle something like around 8lbs. But, you definetly need to get a safegaurd on it just to be safe.

If you want to boost much more, I'd suggest changing to lower compression pistons/rings/rods. Also, to prevent possible detonation, you may want to resleeve your cylinders to make them stronger. A port and polish should be done at the same time, since the block is already apart. Also, you'll need to upgrade your fuel system. A big problem with turbo's is that there isn't enough fuel mixture. Ignition system definetly needs to be changed out. A 3 angle port would also be nice.

I hope this isn't too much for you.

 

Nope, that's exactly what I needed! thanks!

 

I'd go B20B, already low compression, and cheap. Plus with the 2.0l disp, you're pretty much guaranteed to get MAD HP & Torque numbers.

 

what is the weight of the B20B vs. a B18B? I'm trying to avoid the handling problems caused by too much weight in the front. Otherwise I'd just go straight to a freakin H22 and boost that.

 

The B20 is phsyically similar to the LS Integra blocks (B18A/B) and the displacement is acheived through a larger bore (~84mm vs ~81mm). If you intend on running big boost and have plans on spending the cash to have the block sleeves replaced with stronger aftermerket sleeves, get yourself a 1.8LS block and have it sleeved to 84 or 84.5mm. LS blocks are a bit more available and tend to be cheaper. If you plan to put a VTEC head on it, be sure to do your research and use all factory Honda bearings, water pump, oil pump, etc. For boosted motors, aftermarket rods & pistons will greatly improve the life of the motor. I have seen crower & JE combinations that work well, eagle/srp is also a cost effective solution.

 

Damn I love honda-tech....you guys rule!

 

AnyTime, 8552 heads are better than one.