RKSskier

well the original plan was to hit low 13's on street tires, and break into high 12's with slicks, but with the hp i hope to have, I think i might be able to break into 12's, keep in mind that this setup with this power and under best circumstances could probally hit high 11's or low 12's with slicks. I have a coupe, and i will not assume i am the best driver, and I will assume my 300 whp civic will be slower than the next guys just becuase thats my luck, so I want to over build it. I want to have the power to go faster than my actual goals. I realize that it is going to be close to hitting 12's on street tires. If that doesnt happen I am not all too concerned (if it is becuase of traction issues, I just want something that can pull hard on the highway) but I do want to run low low 13's on street tires at least, and at least into 12's on slicks.

Platty9

ur gonna need a clutch capable of handling that amount of power and i would also think about water/alcohol injection too although many people don't use it i noticed a major power difference with it

RKSskier

ohh ya, clutch is deffinatly on that list, forgot to add that, shoot my stock clutch is pretty much gone and thats with an NA d16

Slo_crx1

That's your weakest link right there There is no such thing as alot of power and reliability, trust me, i know first hand. 300 hp is not an unattainable goal on a d-series, but it will take alot of money, alot of research, and an awesome tuner. First thing, address the issues. The y8 oil pump sucks, replace it with the z6 unit. You're going to need it when you start hitting much higher than stock rpms to make your power. Next check your motor and what condition it's in. If it's getting up there in mileage, rebuild it. Have the crank straightened and micro-polished while you're at, just extra insurance. Build your head too, or better yet, build a z6 head. The higher the rpm you can go, the more power you can make, even with a turbo setup. A nice sized t3/t4 combination will spool late on a d-series, but with a higher redline you can utilize that to your advantage. Vitara pistons are nice for entry level, but get some forged ones instead. Spend the extra money for them if you really want that reliability factor...after all, vitaras are still cast. Get a good set of rods too (duh lol). You'll also need a good clutch to get all that power to the ground. Don't skimp out on this either, nothing sucks more than having to change your clutch 2 weeks after you got it built and running. And research research research. There's alot of things that go into putting something like this together, so the more you know, the better off you are.Oh, and yes you can hit 12's on street tires. Big turbo + higher rpm= less low end torque than a normal quick spooling turbo. It'll let you get immediate traction off the line, and then make crazy power up top when the torque curve starts settling off. Also make sure you don't have any camber issues so you can get a complete contact patch. This is where most people fail and end up spinning all over :P

RKSskier

thanks slo I appreciate the response.

I am saying 300 here becuase I am trying to be overly safe with assumptions of what things can handle what. I dont want to say I plan on getting 260 and end up getting 220 after it is all built and tuned, I would rather get parts that can handle about 300, and boost to what should be close, and then end up with 260+

I am not going to be swapping heads, that just wont happen. I wont be building the head either, no springs retainers or porting/polishing, as well as I wont be going over the stock redline.

So maybe a better way is to state this, bottom end can handle it, even though the stock head wont flow so well, can't I up the boost a little to make up for it? eg: with a head ported and polished, then maybe I could hit 280 whp at 16 psi, but with my stock head, I go up to 18 psi to still get 280?

Doesnt low 13's seem resonable with street tires and 270 whp in a 97 coupe 2600 pounds race wieght with me in it.
What I want to make sure does happen is that I can run at least 13.5 with street tires, and at least 12.9 with slicks.

and I am planning on getting a cheap ebay special xtd stage 3 racing clutch, I will be getting it about a month or two before I am boosted, so if it seems like crap I will ditch it before boosting (at $150 I cant help but try it) have heard mostly good things about them

FooK

i ran mid 13's with a ---- of alot less than 270whp.

RKSskier

exactly, I am just trying to do at least, I really would like to break into 12's on street tires, and I think that could be possible with 270 whp, I dont have an lsd, but will get some traction bars, so street tires, traction bars 250 whp-270, doesn't high 12's look possible?