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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sun Apr 22, 2012 1:33 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
So my overheating issue was a bad radiator cap. Got a new one today and now the gauge reads at about 3/4 to the top. I was wondering if some other DR guys can tell me what theirs reads when driving around.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sun Apr 22, 2012 5:24 pm 
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Joined: Tue Jun 10, 2008 3:55 pm
Posts: 396
Location: Auckland, New Zealand
mine never goes above halfway (I have a 71deg thermostat instead of the regular 82deg one, if that affects anything.)

However in traffic the gauge goes up to about 4/5 of the way before the fan kicks in. External water temp gauge reads about 94 degrees by that point.

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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sun Apr 22, 2012 5:43 pm 
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Joined: Thu Jul 26, 2007 7:51 pm
Posts: 2200
Location: Sydney, Australia
FWIW my Hako owners manual says that it's quite normal for the temp needle to go up to 3/4s across the dial. I was pretty freaked out until I checked it out.

Anyone got a scan of the DR30 manual to confirm the same?

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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sun Apr 22, 2012 6:45 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
Posts: 8458
Location: Fort Worth, TX, USA
Seems like you'd be better off to just hook up a gauge? Often when I've owned a JNC with a functional temp gauge, I temporarily hook up a good temp gauge for a day or so just so that I can figure out what the stock gauge is really telling me. For example, on my last 510 this trick told me that looking at the stock gauge as the needle sweeps past the letters TEMP on the gauge, T was 160, E was 170, M was 180, and P was 190.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sun Apr 22, 2012 8:17 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
I am going to get a new set of thermo switches and do change out the radiator fluid with new stuff and see how it runs. The water in it right now is a bit rusty looking. Then I may add a gauge if I am still worried.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Thu Apr 26, 2012 1:40 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
does anyone have info on the SR20 ecu conversions. I want to know more about using the stuff from a GTI-R or just stuff from a SR20DET. I have searched a internet a bit and found very little.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Thu Apr 26, 2012 2:01 pm 
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Joined: Thu Jul 22, 2010 1:36 pm
Posts: 112
Location: Seattle, Washington
Try PMing bhhamblin he has the GTIR ecu on his DR30. Please post up any info you find out, I have been casually looking around the webs for info but haven't come across any. I do see the whole used "kits" ( ecu, maf, and ignition coil/ coilpacks) on Yahoo auctions every once in a while.

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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sat Apr 28, 2012 11:46 am 
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Joined: Thu Oct 30, 2008 9:57 am
Posts: 160
Location: southern cali
gtir ecu req jumper harness yoU used to be able to find on yahoo auctions...requires some changes specificaaly the air flow meter and some wiring i beleive ,,the sr20det ecu requires harness change modified cas to dist setup...again search yahoo auctions have seen the modified cam sensor for fj20 or get ahold of greenmonster80 on here he has a super charged and turbo charged fj20et in his garaGE ALONG WITH A MODIIFED CAS FOR FJ..


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Fri May 11, 2012 10:19 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
So I had to take the car in to get fixed. It was running bad when off boost but great on boost. Also i wanted to have it looked at cause the dash lights would glow all the time.

So my mechanic said it was still running rich and leaned it out a bit more. It now runs great off boost and better on boost. Also the kick when it gets onto boost isn't as bad now. It is a nicer transition but still pulls like mad. I did notice one thing funny. It nos boosts higher than what I dropped it off. I think I was at .4 bar and now it is at .75. Can a simple tune up do this???? I have never owned a turbo car so this is new to me.

Onto the dash lights. So all the warning lights on the dash would get brighter as the car revved up. I laid many Internet searches and most all said it was a alternator. So I had my guy check it out. Sure enought it was putting out 0 volts at idle and 20 volts when revved up. So the regulator was gone. He put on a new alternator and bam no more dash lights.

So now the car is running great and I will be driving it as much as I can. We will see what happens next. I think I need to get it on a dyno to see where my air/fuel mix is at.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Mon May 21, 2012 5:15 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
Took the car out this weekend for some canyon driving. Had to put some miles on the new plugs. The car ran better but still has some issue. It also ran very hot and I had the big fan on the whole time. I think I need to get the radiator a recore and then see how the temps are. I stopped along the way to let it cool down and snapped some photos.
Image
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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Tue May 22, 2012 12:28 am 

Joined: Sun Apr 24, 2011 10:41 am
Posts: 42
damn, what a wild beast it looks like.
always loved skylines....................... :twisted:
if your car overheating to much you might wanna use some replacement heater fans (cefiro A32 "MAXIMA") fans; Strong and coooooool :mrgreen:


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Tue May 22, 2012 12:56 am 
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Joined: Thu Jul 26, 2007 7:51 pm
Posts: 2200
Location: Sydney, Australia
Every car I've ever imported from Japan, has had a radiator full of crud...just sayin :)

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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Fri May 25, 2012 1:49 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
So it looks like my AFM is busted. So does anyone have a good used one or know where to get a rebuilt one for a FJ20det?


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Sat Jun 16, 2012 4:07 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
So got a used air flow meter on its way from japan. Can not wait to get it installed.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Mon Jun 18, 2012 7:39 am 
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Joined: Thu Oct 30, 2008 9:57 am
Posts: 160
Location: southern cali
ddi you try locating a 280-zx turbo one jus to limp around ..


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Mon Jun 18, 2012 8:40 am 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
No it will limp around on the one it has. It just has a flat spot at about 2700-3000 rpm where it loads up with fuel. I can take it out for a little fun driving but to everyday stuff it sucks.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Mon Jun 18, 2012 10:04 am 
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Joined: Thu Oct 30, 2008 9:57 am
Posts: 160
Location: southern cali
yea i dont remember there being flat spot in it....you ran codes and got afm ones?yea sucks no readily availabe parts to switch out...is the factory fuel reg still good?


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Wed Jul 11, 2012 11:15 pm 

Joined: Tue Jun 22, 2010 12:51 pm
Posts: 78
Location: Dominica
http://www.network54.com/Forum/166246/thread/1223112550/
This is a good guide on converting an FJ20 to coilpacks, you can use any SR20DET ecu for a turbo motor. I plan on doing this with an Avenir ecu I have laying around


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Thu Jul 12, 2012 9:10 am 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 493
Location: Newark, CA
Got the new AFM installed yesterday and the car runs like a champ now. The boost went up just form that change. So I will be bring it down a little. I think it is at .7 bar now and I want to get it back to like .5 bar.

DomKDR I have read that a bunch but think I am going to go with a JWT set up instead. It will be a while away thou since the car is running so good now.


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 Post subject: Re: Derux DR30 FJ20ET
PostPosted: Thu Jul 12, 2012 9:14 am 
Mild Cam
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Joined: Wed Feb 10, 2010 2:31 pm
Posts: 1675
Location: Cleveland, Ohio
Super nice car, I'm starting to prefer this front end to the Tekamen-style. Glad you got it back together! :tu:

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