what should i do for max hp from stock 1.5

Hey guys im new to the site. I have a 89 honda civic dx with the 1.5 5speed manual transmission. Just dropped a new clutch and a redone tranny in it. Ordered all new tierod ends and balljoints. Now i wanna know how much stock 1.5 is. i believe its like 90. Now major question is how much hp can i get out of this thing. I wanted atleast like 175 or like 200 if i could. or even like 150hp. Now i dont have mad cash. I do all the work myself and with friends help. I wanna keep it all stock motor tho. i can do port n polish ect. Just wanna keep it the 1.5. So can u please list like underdrive pullys: adds blah hp, manifold adds: hp. just list as much stuff as u can think of to add some hp. Thanks alot

First thing to get any HP out of that motor do a MPFI swap from a Si that will put you around 104Hp in just the swap. As far as the rest you could put a Si head on and get a cam. Im not real sure your goals are achivable with little to no fundage. But post and polish is always a step in the right direction.

like cjz said: multi point swap will be the biggest notice in power increase you will get from that motor. I'm doing a Si cam along w/ mpfi , which should add alittle more kick to the old bucket. But your goal for 150-200hp probably won't be happening unless you do somekind of forced induction setup. Have you checked out homemadeturbo.com? Lot's of good info there and if you're resourceful you could peice together a turbo setup for not to much $$$

DirtyD777 hit the nail on the head; go turbo. Those little 1.5 bastards can nake quite a bit of hp with a turbo kit. Also turbod16.com is a good resource too.
But just adding bolt-ons and mild motor work isn't going to get you anywhere near 175hp, let alone 200hp.

if u choose to do a homemade turbo and go to turbod16....look at the info b4 asking questions...they don't take to kindly to repetative questions...

but i'd do a port and polish, everything everyone else said and about a 75 shot of n2o...but only after u do all that other stuff

to make it to 200 your going to have to use a 107hp shot of nitrous... or as they like to call it NNNNNAAAAAAAAAAWWWWWWWWWWWWWWWSSSSSSS

:lol:! @ silent chamber

thanks guys. The only thing right now i have is a si tranny, clutch and flywheel. And a full catback excaust system. Imma look into the home made turbo's and stuff. THanks

you could add every single bolt on to that motor without swapping the head and end up with maybe 110-120 whp...MAYBE (if ur lucky enough to have one of the RARE d15b2's in good running condition). I would say swap on a vtec head and add a 25 shot of nitrous or turbo it

First thing to get any HP out of that motor do a MPFI swap from a Si that will put you around 104Hp in just the swap. As far as the rest you could put a Si head on and get a cam. Im not real sure your goals are achivable with little to no fundage. But post and polish is always a step in the right direction.

BTW...just to let you know so you don't furter misinform people, the si head and dx heads are the same internally besides the camshaft.

Well im lookin for atleast 150hp. now i have a full catback excaust system but headers. Any suggestions on what i should add to get 150 goal ? and how much hp do i have around now with this excaust

BTW...just to let you know so you don't furter misinform people, the si head and dx heads are the same internally besides the camshaft.

How was that I Misinformed him would it not be easier to get a Si cam in a head then try and find a Si cam by itself. Also would it not be better to have a extra head so he can have a car to drive while he ports and polishes. Just watch who your Saying Shit to. Not misinforming just skipping all the "this is why you should" and the "this is what you should get stuff". DO YOU UNDERSTAND me now. Dont tell me WTF Im doing cause I know WTF Im doing. If you think its a good Idea to resond dont cause it will be seen by Blind eyes. YOUR NOT A MOD SO SIT IN YOUR CONER AND SHUT UP.

woah, having a bad day?

hahaha you get him cj...lol

:lol:

can we get back to my question lol How much hp do i have with a full catback excaust just no headers. And what do i have to do now to get to the 150hp goal ?

go dyno ur car n find out..lol

TURBO and fuel management thats it. Unless you put NAZZZZZZZZZZZ in it. Your not getting 150hp out of that motor. Unless you spend around $2,000 worth of fuel management system, lots of praying, cam, pistons (high comp), bigger injectors for your not yet purchased Si intake manifold and wiring harness, more praying, at this point pleding with god to help. Ya thats about it Good luck on a all motor 150hp D15. under $2000

my current set up should be pretty close to what you want, i have a mini me on the a6 block with a z6 head, stage 2 comp cam, 7 lb flywheel, I/H/E, MSD ignition (no real hp gain there though), i have a underdrive pulley laying around for trackdays (wouldn't recomend using it daily, i already spun one rod bearing with it, at 120,xxx) and a skunk 2 cam gear that i just need to get put on... a setup like mine should be just about what you want... but a turbo would be easier...

jeef hes asking to get 150hp not 140hp with out the right fuel management system you are NEVER Ill say it again guys NEVER ok one more time NEVER going to make it to 150hp with out help you need more fuel to make it and the stock shit is not going to get you there. A chipped ECU will infact get you there but as jeef has you will have to get more parts = more money than a starter TURBO kit. So there ah damn it ya way bad day. Hmm I think its bottle or tit and nap time.

i/h/e will only give u a bhp at the max of around 10-15, if that...the whole point of those is to make ur engine breathe better and that's it...with our cars there is no real gain the the noise for ur exhaust only makes u think ur going fast

How was that I Misinformed him would it not be easier to get a Si cam in a head then try and find a Si cam by itself. Also would it not be better to have a extra head so he can have a car to drive while he ports and polishes. Just watch who your Saying to. Not misinforming just skipping all the "this is why you should" and the "this is what you should get stuff". DO YOU UNDERSTAND me now. Dont tell me WTF Im doing cause I know WTF Im doing. If you think its a good Idea to resond dont cause it will be seen by Blind eyes. YOUR NOT A MOD SO SIT IN YOUR CONER AND SHUT UP.


wow buddy...i was just trying to inform you and the newB that it's not necessary to swap the whole head when you can just swap the cam. Alot easier don't u think? You didn't mention anything about port and polishing a second head....I'm not YODA and i'm not a mind reader either. I only responded on what you wrote. I know that in the NAVY, we don't act like that....and that people who do don't last very long. Do yourself and all of us here a favor and GROW UP. There's no need to respond like you did with cussing. I know my stuff too. I'm not gonna try to tell you what i know...just that it's ALOT more than you do. Write what you want...and respond back in your immature way again. There's no need for me to argue any further with such an immature, know-it-all...
Have a nice day.
:iceslolan

Hey what do you mean by : Si cam ? Just the gear? or what all is connected. If u find any links on ebay please post them THanks

the camshaft, not the cam gear, the cam gear will be the same for most all d series engine but the Si camshaft will be slightly more aggressive than your dx cam... But first and formost you're going to want to switch to the MPFI rather than the DPFi you have.

Hey what do you mean by : Si cam ? Just the gear? or what all is connected. If u find any links on ebay please post them THanks

MPFI ? what all is involved in switching? what parts do i have 2 get. How hard is it to install?

intake manifold, throttle body, fuel rail, injectors, resistor box, ecu, dizzy, and helps to have atleast a partial wiring harness.

http://www.412crew.com/412customz/Projects/pages/P1010158_JPG.htm is my motor. ( Its now backtogether this was when i installed my si tranny and clutch)

do a quick search on it there are many many threads explaining it and what all needs done

Ok with my full catback excaust. and if i get Race headers, Air intake, underdrive pullys, how much hp would i have?

stay away from underdrive pulleys, i speak from experience you will kill your bearings, i spun a rod bearing with less than 120,xxx on my engine, rather unusual for a honda, and with I/H/E you can expect maybe a 10-15 hp gain depending on a lot of different factors... where that really comes into play is when you start doing other stuff to your engine like a cam or other internal works.

How hard is it to port and polish an engine. I know when i raced quads i had a 2stroke tho. I tore my motor apart and had it done. But i mean how much work is really into a car engine. How much money and hp gain? Is it really worth it

Underdrive pullys will not mess up bearings unless it is a cheep one that is not ballanced right.

Porting/polishing is more time/labor involved than anything. Honestly you will only see a few (probably 5-10) out of it due to the fact that honda heads flow very well from factory. If you hire a shop to do it most machine shops will charge around $150/hr, could take from three to five hours to do it.

damn just like the one guy said throw a ve-tec head on an u'll be around what ur looking for to start off with its better that way then to swap,ive seen the d15's blow b16's away

Underdrive pullys will not mess up bearings unless it is a cheep one that is not ballanced right.


so then you would consider my unorthodox pulley cheap??? Trust me i tore my bottom end apart i know what my bearings looked like, and they shouldn't look that way on a honda engine with 120,xxx on it

unless it is unballanced it wont effect bearings. Period.