I have a D15B7 engine in my 94 honda civic LX. I want to get some more power out of my engine. I thought rebuilding it would help like maybe bore it out a little more? What all would I need to do this and what would be the price range?

I also want to turbo it later down the road but i heard that the D15B7 wont hold up to turbo or something?

 

I am by no means an expert on mods for engine performance, but you might instead consider swapping in a rebuilt D16Z6 engine, which may not be very expensive.

 

cant lol this is kinda my class project i want to rebuild the engine i have and add more power to it at the same time. Thanks though =)

 

building a d15b7 is a waste of time

you want an easy 25hp? put a d16z6 head on top of your d15b7 block.

parts needed:
d16z6 head
P28 ECU (these are transmission specific - manual and auto ECUs are different)
vtec solenoid and wire plugs (might be included with head)
d16z6 distributor (might come with head)
d16z6 spark plugs (NGK V-power, $2 a piece)
d16z6 spark plug wires
head gasket (d16y8 head gasket is best - made of metal)
d16z6 timing belt
d16z6 valve cover

optional, strongly recommended:
new OEM head bolts
new water pump (d15b7)
new timing belt tensioner (d15b7)
coolant flush (very easy... steps below)


DIY Coolant Flush: (since you will be doing a head swap, do steps 1-5 before working on any other part of the car)
Preliminary: Set the e-brake. Jack up the front of the car and put on stands. Get a bucket under the radiator, and slide/turn your heater temperature all the way to hot.
1. drain radiator by removing the cap at the top and unscrewing the drain plug at the bottom.
2. put drain plug back in and fill radiator with water.
3. put cap back on and run the engine for around a minute and then turn it off.
4. repeat steps 1-3 until the only thing draining out of your radiator is pure water.
5. drain radiator for the last time

6. fill radiator with half of your coolant systems capacity (i did the research and math for you - it's gonna be .54 gallons, assuming you still have an automatic) in 100% undiluted antifreeze
7. fill the radiator all the way up to the bottom of the filler neck with water (you now have a 50/50 mixed solution in your system)
8. add 50/50 mix to coolant reservoir
9. leaving the radiator cap off, start the engine and let it warm up to normal (rad. fan comes on twice)
10. bleed the system of air from the bleed bolt on the front left corner of the head. let it flow until a steady stream comes out. tighten bleed bolt (not too tight!, housing will break... trust me, been there done that).
11. turn off engine
12. fill the radiator back up to the bottom of the filler neck if necessary with 50/50 mix, and fill the reservoir to the max mark with 50/50 mix


for the record, the d15b7 can be turbo'd safely.
it's automatics that don't handle boost well at all.