I'm new to Honda's so I need some help and/or advice. I have a 1993 Honda Civic Del Sol SI with the SOHC Vtec D16Z6. I would like to get a good 230-250+ whp out of this engine I do not want to swap engines. Is this possible all motor? I dont mind swapping heads I actually think I would prefer DOHC. And I dont mind going turbo either, actually I think I would prefer that as well. I guess I'm just looking for an approximate build sheet. Any ideas?

 

Or atleast a good 200-230+ whp. Something to make it an enjoyable daily driver, a quick little street legal go cart I guess. Something that if I want to show up a stock or mostly stock mustang on my way to work I can. And I do want turbo, you just cant replace the sound of a good blow off valve. I'm used to hearing it in a Cummins diesel but it sounds good on a 4 cylinder too.

 

ok. you can't swap from a SOHC to a DOHC. it wouldn't fit.

so anyways. stay SOHC. turbo it. and now jump from the sub forum over to FI.
get compression to around 9, throw on a lil turbo, boost to around 10 psi. you should be in about the 200 hp range. or rebuild the bottom end and up the psi.

you can easilly make the 250 you wanted earlier. not NA though.

 

Take it to a shop. lol

 

dont see it happening, best bet is boost

 

No I won't go to a shop. I have built 100's of V8's and diesels, no reason I cant learn a 4 cylinder I just have to ask questions and listen. So if I leave the bottom end stock, I dont guess I could leave the head stock could I? I dont believe a stock engine with a turbo will get 200-250 whp, that just seems like a big stretch it only has 125hp stock

 

well completely stock yes.
you'll have to build the head for turbo, new springs, retainers cams so on. after that you can leave the bottom end stock and hit 200. trust me its been done plenty.

as i said before check out the forced induction section. they can help you out alot more then the NA forum can although they may know about it all the same.

http://www.turbod16.com/viewtopic.php?t=4140 not the greatest since the parts list isn't there. but here's some ideas on whats possible.

 

You've built 100's of V8's yet you're asking about getting 250hp out of a 1.6l ?

 

Yes I have, my dad and I own a restoration shop in northern AR and we have restored and built numerous V8's and diesels for anything from daily driver's to car shows and drag strips. But we have always been skepticle of "tuners" and actually always made fun of them. But I decided to give it a try, yes I'm still a Mopar guy, but I'm willing to bet I will have fun with this car. The biggest thing that gets me on tuners is the electronic side and the "tune", V8's dont need these. Also many on many V8's you wouldnt run turbos and you never mix and match engines. I just want to make sure I have all my ducks in a row before I set out on this project, I have never ruined a car in my life and I dont intend to either.

 

Over time when it is no longer a daily driver I will probably go for more like 400-425+ whp, but for commuting to work 250 whp is plenty.

 

You can make 2-250 by turbo'ing it with a stock motor. No, you do NOT have to build the head...just add headstuds, a good manifold and turbo, and tune it. nothin special. But if we're talking about boost, why is this in the NA forum?

 

Are you saying a B series motor will not fit in a Del Sol?

 

He was referring to swapping the head alone on a D16. This thread started out with me just looking for build ideas in the NA section, and has turned into boost lol

 

I really hope you have your flame suit on...

 

Now why would I need a flame suit? Look people I'm not trying to be the guy that knows everything or the laughing stalk of the forum. I dont know everything about a 4 cylinder engine, in fact I have never touched one outside of regular maintenance. That is why I'm asking questions and looking for insight from the people who do know the ins and outs. If we were talking V8's or diesels I would be more confident, but we're talking a complete different project that I have never messed with before. So can we lay the jokes aside please? Thank you.

 

Ok. Factory Honda engines use tighter clearances than many "blueprinted" V8s. You'll need to buy a factory service manual to make sure all your clearances are correct. You tune a Honda engine the same as a V8, it's just more precise, and there are more parameters to take into consideration. Lots of V8s run turbochargers, many of the most powerful ones do. All new V8s are electronically controlled, they make more power that way.

Check out:

www.D-series.org

www (dot) one cam only (dot) com

These two sites have tons on information for you.

 

I can see your view on electronics and turbos on V8s, we just specialized more on carbuereted mid 1970's and older. Superchargers are common on those. I appreciate the resources

 

sorry clean rice i know very little of turboes. i assumed for 2-250 you'd need an upgraded valvetrain and a cam.

so apparently it'll be very easy. but those two sites will be able to help you more.

or teamsocal more for the chasis then the engine part.

 

I'll admit chassis and suspension and brakes I'm ok on, just getting that little engine to pump out some more hp I'm skepticle about and seeking insight. I dont know maybe I'm afraid to break it lol. For suspension I currently have KYB struts with Eibach sport lowering springs (1.8" f+r) and Eibach sway bars f+r. I am also adding Skunk2 strut tower bars front and rear and for breaks a cross drilled and slotted rotor and caliper package from Wilwood f+r, the front calipers are 4 piston.

 

That's pretty much backwards. You don't need to touch the head for a mild to moderate turbo build.

To 1993DelSolSI - You need to go forced induction to get a daily driver with that power level with a D16. Fortunately, there is a lot of information available, as that is a popular motor for mild turbo builds.

Since you already have a basic knowledge of motors, you should go through the dyno results posted in the FI section (using the search function) and find D16 builds making the power level you are looking for (there are lots of them). Most of the time the dyno charts/results have at least a basic overview of the build that produced them, so this will give you a very good, no bullsh*t roadmap of what you need. With a properly sized turbo and a good tune, you can get the power of a decent V8 with the highway fuel economy of your stock motor.

Best of luck with your build.

 

I like the sound of that, decent V8 power in that little bitty car with the 30ish mpg I'm currently getting...that sounds perfect till I get a new daily driver. Thanks man

 

I don't know why people are trying to mock you for trying to expand your horizons...
To those of you reading this, find something better to do. This guy is simply trying to educate him self & get input from those of us with experience with his application.

Back on topic:
Use the search feature to do your research.

Your goals will not be met while being naturally aspirated on an affordable 1.6L sohc vtec engine.

If you go turbo:
1. Use quality brand name original parts only. (Tial, Precision etc.)
2. Don't skimp on engine management or tuning. If your engine is properly tuned, it should last. (Review http://www.phearable.net/tech/efibeginnerguide.html
3. Use quality oil lines / fittings / couplers / t-bolt clamps / return line etc...

If you need further advice on parts/engine management/help finding a local tuner etc, please feel free to contact me.

Good Luck!

 

Ok, I appreciate that. I know all about using quality parts, but have a very slim knowledge of who makes quality parts for this application. I have heard alot about Turbonetics and Jackson Racing turbos, but I have also heard they are outrageously expensive which isnt a problem it will just push the date out a little bit.

 

Turbonetics - I am not a big fan.
Jackson Racing - Makes superchargers, I am not a big fan of supercharged applications. I prefer turbocharging due to lower intake air temps, bigger horsepower possibilities etc.

Your best bet is going to be to start checking out all of the d-series forums.
There are a few with plenty of d-series specific information google.com is your best friend :-)

http://www.d-series.org/forums/
http://www.turbod16.com/
etc...

 

Here is a start:

https://honda-tech.com/forums/forced-induction-16/sohc-boosted-set-ups-chime-place-single-slams-1643764/
https://honda-tech.com/forums/forced-induction-16/post-your-400whp-vitara-builds-2479456/
https://honda-tech.com/forums/forced-induction-16/good-d16-turbo-build-2820035/
https://honda-tech.com/forums/forced-induction-16/d16-vitara-build-pump-gas-420whp-319tq-2740947/
https://honda-tech.com/forums/forced-induction-16/speedfactory-09-vitara-d16-build-2582191/
https://honda-tech.com/forums/forced-induction-16/vitara-pistons-setups-sign-up-here-1294901/

Also, search for "vitara" to get info on a cheap option for turbo-friendly pistons.