I am a Honda Tech Newbie. I have a 1995 Honda Accord and spent the last few months putting a supercharger from a Pontiac 3.8 on the F22B2 engine. I made a drive using a water pump. I bolted a 3/8 in plate to the block above the water pump, cut a 2 1/2 " hole through it and bolted the new water pump to it so that the cogged drive is in line with the other timing belt pulleys. I removed the impeller from the new water pump, cut a 1/2 inch thick disc, heat shrunk it onto the shaft where the impeller was and bolted a 5" pulley from a cadillac power steering pump to it. I got a longer timing belt so it fits over the new supercharger drive. I had the intake manifold modified to creat a plenum and bolted a 1/2" aluminum plate to the top that had been cut to match the bottom of the supercharger. I made an adapter plate to use the F22 throttle body. I reattached all the sensors, cut passages for the idle valve and put the whole thing together, It started up and runs!

Help! My problem is that it won't idle evenly after a minute or two. It idles and revs fine but then it speeds up to 1500 rpm and slows down to 700 rpm every 10 seconds or so. I think the idle control valve is opening and closing so it must not be reading the RPMscorrectly? Does anyone have any ideas on what to do next? I don't see how the supercharger could cause this since I left the MAP sensor, manifold temp sensor, etc on the vacuum side of the supercharger.

I am a physician who needs to use the other side of my brain sometimes. I am not shy about trying something different. The supercharger looks like a factory fit and if there is a way to mount pictures somewhere on this site, I will gladly do so. The whole set up cost about $300 in parts, including the used supercharger. I like how the drive is close to the supercharger. It did take lots of hours however.

Any comments?
woodworkermd

 

email the pics to DMORROW@USXPRESS.COM i'll post them

 

I would really like to see pictures, it sounds interesting. Find a photohosting site to upload the photos to and use img brackets to post photos. I use Photobucket.

As for the idle, make sure there is no air in the coolant, check your idle air control valve, and your fast idle thermo valve. You may also have a vaccum leak.

Also what kind of tuning are you using?

 

Just the standard ECU. I am a mechanical guy, I don't know much about how the ECU works. I waited to see if it would run before adding an upgraded engine management system.

 

From what you describe, if it revs up and down every 10 sec., that the ecu is detecting rich as the compression side builds up vacuum from idle after 10 mins and the funny idle is the reaction you get from that pressure. You may need a smaller pulley.

You seriously should get bigger injectors and management before you continue with this.

Get some pics up!

 

i like that dude

 

 

i'm curious of what you did woth the brake master cyl

 

The pulley from the supercharger unfortunately ended up in the region of the brake fluid resevoir, I took the power brake boost apart (it unlocks by sort of unscrewing it), turned the master cylinder part 90 degrees and put it back together. I made a hose attachment where the resevoir would normally be on the master cylinder and made a remote brake fluid resevoir.

 

That is one of the coolest things I've ever seen.

You definately need some sort of tuning. There are a lot of low cost options. I recomend uberdata, crome, or hondata.

 

Do you mean smaller pulley in terms of less boost?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by woodworkermd &raquo;</TD></TR><TR><TD CLASS="quote">Do you mean smaller pulley in terms of less boost? </TD></TR></TABLE>nah. maybe a little bit more either on the impeller side or off the timing belt.

Nice work with the MC reservoir.

 

wow, very nice. im interested to see how this will turn out

 

cool stuff man I like I suggest crome, and some dsm 450 cc injectors- Very nicely done...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by woodworkermd &raquo;</TD></TR><TR><TD CLASS="quote">Just the standard ECU. I am a mechanical guy, I don't know much about how the ECU works. I waited to see if it would run before adding an upgraded engine management system. </TD></TR></TABLE>
since you're a mechanical guy and a supercharger provides linear power, you may want to look into an FMU (rising rate fuel pressure regulator) and an inline fuel pump to supplement fuel for boost. Pull the boost reference for the FMU from AFTER the supercharger.

Guys, Chrome won't do him any good with the MAP on the vacuum side of the throttle body.

For best gains you should definitely look into a better management system, chrome, uberdata, hondata, AEM, some larger injectors, and relocation of the MAP so it will see boost.

Try taking off and cleaning your IACV. I had the same symptoms with a bad idle air control valve after a motor swap. Changed the valve and no more idle fluctuation.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by notoriousB &raquo;</TD></TR><TR><TD CLASS="quote">

Guys, Chrome won't do him any good with the MAP on the vacuum side of the throttle body.
</TD></TR></TABLE>

o snap...duh!!!!

 

that is some tight ****, youve just threaded upon the waters that many accord owners have tempted and thought about.. if this wil work on an f22 it will definitaly work on an h22 and perhaps look better and be cheaper than doin a JRS into your accord.

 

If I were to do this again, I would use an Eaton supercharger from a Jaguar or a Mazda Millenia. I had to swap noses on the pontiac supercharger for a shorter one. The Jaguar's nose is much shorter and would save some hassle. One comes up every now and then on Ebay. The Millenia supercharger is better at making boost for some reason, I can't remember why just now.

 

come to think it doesn't a jackson kit come with some sotra spacer for the map sensor? that could be your problem

 

i wanna see what this thing looks like

 

look 14 posts up at the pics

 

pics dont look like there working?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuShiBoiiii &raquo;</TD></TR><TR><TD CLASS="quote">pics dont look like there working?</TD></TR></TABLE>

there working just fine for me

 

someone shares my pain

 

the idle surge is common of an FITV valve not working correctly as well. My car did that.

im wandering, with that thing installed, did you remove or relocate anything else?