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I have been bouncing around the Idea of going all motor with the D17 for the last two months. I have no experience with this type of thing. I have taken automotive classes and have studied for the last 3 years and have a friend that had an all motor civic si. I was very impressed by it. The main thing Im thinking is increasing the Comp. ratio to about 11-11.5. And then getting an EX head with the crower NA cam. And just porting out the exhaust valves. Anyone else tried this? Or thought about it? Or am I just gonna get the same BS about searching and how Im a newbie? Also If I do increase the stroke do I have to get another crankshaft or will the stock one be okay?

 
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the industry doesn't really have the stuff to really rebuild the interals for an all motor build.
Just pistons, a few cams and a AEM EMS system.
I would just do a k20 swap and build that motor before putting it in.

As for P&P, compression and cam or regrind ;yes it has been done.
The few that have done it didn't really report back with dyno sheets.

 
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dezod has internals for our motor. welcome to the "i want to build a d17" club. cause i want to do it too. but as most of us are poor, its not a reality. don't just port the exhaust section. do a port and polish on the head. stuff that exists for our car
pistons
rods
retainers
springs
cams
sleeves
block gaurds
gaskets(i have heard of aftermarket gaskets, but i have yet to find one around so this is iffy.)
whole bunch of stuff i dont feel like listing, but this would be the expensive stuff for an all motor d block. if your not gonna turbo it do like a 15.0 compression. it would be pimpin

 
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http://www.7thgencivic.com/forums/sh...d.php?t=219641 stroker

 
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the crank is what determines the stroke of your motor. So you will need a stroker crank in order to stroke the motor.

 
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Wow 4200$!
Yeah Ive seen that one before but thats way too much for a stroker kit. If Im spending that much why not do a K20 swap.

The real question I had about the crank was;is it a regrind and knifegde or a completly new crank. From that kit it looked like a regrind.

I would love to have a turbo set up but I gotta tell you I had a lot of fun racing around in my friends 90 si hatch. That thing would keep up with anything.

The reason I said just the exhaust valves is because someone on this site had a port polish done on their heads and they didn't make that much power at all off of it. Also they said that the intake side looked really good from the factory and if they had it to do over again they would just do the exhaust side. Im pretty sure the exhaust side is a big restriction on these motors.

 
Rep Power: 319

Well, you going to have to think of what you want out of the motor, remember that increasing the stroke will increase torque. And while it sounds good to increase torque, you WILL run into traction problems and the never ending tranny problems that so many have had. I too looked in to this, but I actually wanted to destroke the motor and bore it out. This means the bottom end can handle far higher RPMs, then you have to have some tricky pistons put in, run about a 10:1 compression with 8,500 or so redline, you will be good But that is going to run some MAJOR bucks, probably cheaper to put a K20 in.

 
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Then I have to ask the next question. How much bore can you get out of these? I just thought the biggest mm pistion that would fit is 76.5. I dont know how much you'd get if you sleeved the block but I just didn't think it would be worth it with such a small motor.

 
Rep Power: 319

Probably not much, I think .40 is the most you can go, at least for older Hondas. But you have the motor all torn appart anyway, you going to be putting new pistons in, why not make them a little bigger. I know some shop sell the overbore pistons, I would just go with the biggest they have. You could find a specialist to do it, because they need to know to leave the block as an open deck and that kind of stuff. Pick up the current Sport Compact car, they built a 10,000 RPM K20, and go into explination of some of the basic machining skills needed. Keep in mind though, the K20 is already kind of over squared for a motor, more so than the D17, hence the reason for destroking and rasing the RPM.

 
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I live like a minute away from JE pistons, and they tell me they can make pistons any size for any application. They'll cost about the same as a D17 motor though. I was thinking about just getting pistons that will endure a higher comp. and maybe getting them a little lighter than stock. Getting a high reving A2 head, valves and everything. Connecting rods, the whole shabang.
Traction is the last thing that im worried about. I need to make the power in order for that to be a problem.

 
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you know that you cant put a K-series head on a D-block right? if not, don't TOUCH your motor....If I was going to go NA (and I had a budget) I'd pick up a 89 CRX HF and put in a B18 w/ the B16 head on it and go from there. D-series is gonna be $$$$

 
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D17A2=EX Head vtec