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1997 Civic Hatch D18Y8 M62 S/C
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Discussion Starter #1 (Edited)
Finally, it is time…

This is a new thread that is a continuation of my 1.8 liter D16Y8 (aka D18 ) engine build. Yes, it’s time to add some boost to the beast. For those of you who are thinking “What? A D18? Ain’t no such thang!” Well there is now and you can read about it HERE. I should warn you though, it’s long and involved and there’s even some Math and Science in there so you better have some advil and coffee handy. If not, then just look at the pictures and video and don’t touch anything. See you back in about 4 days - 2 days to read it and 2 days to wake up from the deep coma. Anyways, I thought I’d start a new thread so you guys who were good enough to encourage me and so on don’t have to wade through all that other stuff. And also I figured it best be put in the F/I section of the forum. Actually, it just makes it easier for me.

So now that we have the thread going, you might be wondering what to expect especially those that followed along in the last thread. Well, we’ll have the usual seemingly endless dialogue of my mostly rational, sometimes maddening, and sometimes beer induced reasoning behind what it is I’m trying to do. I know, I know, it just gets in the way of getting to the dyno charts and ripping video. But don’t worry there will still be lots of pictures, some video, a Pedo Bear appearance or two, and maybe an occasional spar or two with speedfoos. Chances are if you’re a d-series.org veteran, a lot of the stuff I’ll be trying to explain might be old hat but please bear with me as I will try to bring along the n00bs and also those “seasoned” guys with 5,000+ posts (4,800 of them in the Party and Bullsh*t section).

Yes, I’m installing a supercharger so…

If you are a turbo aficionado or raving evangelist, then this thread may not be for you. Still if you want to convert me you may want to think about whether you really want to waste your time because I’m really good at ignoring people – just ask the many Jehovah’s Witnesses who’ve knocked on my door and think I’m never home. Also please save the economic advice like how I coulda gotten “more power” for “less money”, etc, etc. I can assure you I’m spending disposable income for my enjoyment which is left over after paying the mortgage (and buying beer). If you like reading about the process of building something unique as well as confronting and solving problems then you might like this. And finally, please have a little patience. I’m a busy guy with a full time job with a couple of kids and I coach a hockey team. I also like to research things and do things right plus I not only like things to work well but also look good. That means look good according to my tastes. So if you don’t agree with my tastes try to get over it, you don’t need to let me know.

So what are we doing here?

As I wrote in the original D18 thread, I’m building a D series engine setup with lots of low end torque. This is a daily driver so I don’t really care what it puts out at 6000+ rpms. I care about performance in the 0-5000 rpm range so peak numbers don’t mean much to me. Don’t worry I’ll post them when I have them but it will be a long way off. I drive about 40-50mph on winding and hilly country back roads to and from work so it’s mainly that experience that I’m trying to have fun with. This makes sense to me because I will get to feel the benefits of this project every day and not just once and a while at the track. So to recap the build so far, step 1 of this project was to increase the stroke and bore which essentially added a lot of torque right off the line. Now it’s time to add some boost. And it’s got to be boost right off the line which means supercharger.

Now I know the D series Jackson Racing Supercharger (JRSC) has taken a real beating in the raging turbo vs. blower threads. The main problem with the JRSC kit, as often cited by the turbo evangelists, is that it costs too much power to make power plus it can’t flow enough air at the high rpm range. As many of you know, the JRSC kit uses an Eaton M45 roots blower and is hard pressed to break 200HP despite many expensive mods. However, there are a couple of things about my build that will be very different than most supercharger builds on this forum and that is 1 – I’m working with a 1.8l engine, and 2 – I’m not using an M45 based kit. I’ll be installing the M62 based blower "kit" that was offered by Endyn a few years ago. I was lucky to find one in new condition.

So with the basic introduction and overview out of the way, let’s get on with it and start off with a pic of the Endyn kit. So please post up a comment and subscribe if you like. I'll be needing some help along the way so I'm ready with a bag of rep to dispense Stay tuned for more updates…

 

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Registered
88 Civic Hatch
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925 Posts
subcribed...this looks like it could be interesting....rep for thinking out side the box:bigok:
 

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Well?
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10,814 Posts
hell yeah cant wait to see this outcome
 

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98 vw jetta 3
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2,022 Posts
i cant wait to see the results of this. i wonder how the low end will be? will it be over torquey(sp?) in the corners or will it be a nice transition? in for results and rippers.
 

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Registered
1988 Honda CRX
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6,676 Posts
I saw this thread was by Carl, so I automatically subscribed before I read a word.

punkbomb

Roots blowers have instantaneous power completely controlled by the throttle. You instantly get exactly the power related to the throttle opening and it does not change with spool time. This makes them a lot easier to drive in curves.

Carl already has an LSD. Now he will really be able to put it to good use.

While the knockers can justly criticise roots for the parasitic losses to drive them, that is offset by the instant precise predictable controllable response they give. Despite what some think, turbos have parasitic losses from increased pressure on the exhaust blow down stroke and increased displacement also has the parasitic losses from pumping extra air through the engine. There are no free lunches.

This will be very professional, thorough and creative and therefore interesting.

Water/alcohol mix injected before the blower under boost helps to cool the blower and seal and lubricate the rotor to housing interface. It also cools the charge to help avoid detonation.

Where is the throttle plate on this setup.

If I was really devious I would try to tempt you into a twincharger setup.
 

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formerly allnaturalrex
1989 honda crx si
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4,639 Posts
stroked and blown awesome subscribed.

do you know what kind of m62 blower endyn used or is it the same one from the b-series JR kit they just modified it.
 

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BMX bike
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2,938 Posts
sub-fuckin-scribed :)
 
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