Originally Posted by nudvl

I have a 88 CRX dx that I've had for 2 yrs now. I'm converting from auto to manual. I plan on running a SOHC. My target HP is 350-400.

- oooh boy. You might end up spending to much. Can you not settle for 200-250 whp? Would be SOOO much cheapier and might realize its all the boost you need. Its still enough to break mid 12's.

I have so far a Z6 motor,Y8 intake mani.,log style turbo mani., and a 14B turbo. I will custom make a 2.5 in. down pipe w/ a 2.5 in. cat-back w/ either a testpipe or gutted cat.

- 3" dp at the least. straight pipe works, if you have smog try a high flow cat. do NOT gut the factory cat. 2.5" will not work for 350-400whp.

I want to be able to turn the motor in the 7k-8k rpm range which I think will be a problem with the 14B since it came off a 1st gen eclipse and it craps out at around 6k or so.

-Raising the rev limit should only be done on a street car to keep it in good powerband. Other than that, keep it as low as possible. Revs cause WAY more stress on the motor than boost. Revving to 9k when you have a fat powerband from 5k-8k with peak around 6500 or so, there is no point of a 9k rev.

The car will be a weekend cruiser and a track bruiser!! I plan to build the block dont know wether I should use a block guard or save more money and have it sleeved. Probley go with the sleeves.

- If youre shooting for 400whp on a d series, sleeves sound good. If you dont plan on sleeving it, and your motor is high milage, i would sujest boring it .5mm over to get a fresh cyclinder and help your new ring lands. Rods are a must have in a sohc build, as they are very weak. I guess what im saying is, 400whp on a sohc weekend hell raiser will require some good block work to ensure reliabilty. If you lower your goal some, rods/pistons will do plenty fine.

I want my crank balanced and micro-polished, and use ACL bearings. But how does that work? I have always understood that the crank bearings were different sizes. Can anyone explain that part? Do oversized pistons make a difference? Why?

- Personally, i wouldnt bother with crank work. Save your coins. So many high hp builds, even on d series with no crankwork at all.

I plan to run like a 9-1 comp ratio.

- Good and safe, cant go wrong there.

I will get a msd 6al ign. box, good wires, msd cap, msd coil, button, stuff like that as far as ign. goes.

- Many will tell you stock ignition will work just fine. I perfer a digital 6AL myself as well. Hell, it cant hurt. While your at it, get 1-2 heat range colder plugs for added safety.

I was thinkin about endyn or hondata as far as management goes so I dont think Ill have any problems there.

- No point of really buying that. Just have it dyno/street tuned by someone who has it. Unless you want the system in your car on a laptop to freak some people out, its expensive really.

And of course good rods and pistions!!!!

- For sure.

I have a cam gear and Ill probley get a ZEX cam or sumthing like that.

- I personally have no idea about what cam would be good for d series boost. d15b jdm vtec cam? I have no idea honestly. Id sujest asking around and see what numbers people are making on there cams with boost.

I was thinkin about a JRC FMIC. I have a Walboro 255 hp pump and sum DSM 450 injectors but Im thinkin that I will need bigger injectors sumthing like 550's or bigger but how big?

- for 400whp, i sujest 750cc's. 450s wont do at all and 550s will have a higher duty cycle than what it really should have to ensure reliabilty IMO.

I will be runnin 93 pump gas and maybe sum cam2 but not often if at all!!!

- If its only a weekend beat up car, might as well throw in a 2 dollar bottle of octane boost at autozone or wal mart. Will raise it to 100~ or so. Its safer and can be tuned to extract more whp if its on a strict diet of 100~octane rice.

Are stock valve springs good enough or do I need to upgrade?

- If you plan on moving up the rev limiter, no. If you get a cam thats not OEM, no. If you get a zex cam or whatever it might be ok, but the springs are made for the factory cams. Using more aggresive cams could be flirting with trouble.

Ill have the head freshend up, do sum port-matching and maybe sum polishing.

- Hey, cant go wrong there. Also nice to make more whp at the same boost lvl.

What kind of turbo am I gonna have to run in order to turn the rpms and help make the HP that I wanna make? Can i get there usin a 14B(probley not) or a 16G?? If sum of this doesnt make any sense plaese tell me and I explain or make changes. And please keep ur answers and ideas simple Im new to the turbo game.

- Honestly, Ive seen a lot of 300+whp figures using only a T3 junkyard turbo. The GT28R will work fine aswell. Im not awful sure about it but id keep asking around what turbo would have a killer powerband on a 8k rev motor. Or whatever your limit will be.