st205 into st185 swap faq/ and parts compatibility

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Ahead of the curve?

Postby 3sgte4me » Fri Jul 13, 2007 3:51 am

You may be well ahead of the curve on this install. And as such you're figuring out all of the gremlins and how to fix them. 8)

Im following the posts, and frankly..Im impressed.

Im curious how this might all work out in a st165 :D
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Postby scothaniel » Wed Aug 01, 2007 8:29 pm

Wow, this thread started in back Sept 05. I feel for you Coldiron, you've been working on this project for almost 2 years now - I'm sure you've got to be pretty frustrated.


The 205 injector coil pack has the same resistance as the 185, the only difference is the pigtail. The 205 fuel pump resistor is also the same.

Your vac does sound low. I'm usually idling in the mid-20s, with vacuum overrun around 30hg.
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Postby CMS-GT4 » Wed Aug 01, 2007 8:35 pm

Hey scott, see my project thread.

If I leave the car running for a bit and the engine bay gets hot, the car runs awesome.

I think what ever loose vac hoses there are, seal better once they are warm.

When I get free time, god knows when, I am going to park it in front of autozone and go through ever hose. I will buy any replacement hoses or clamps as I get to them and do a detailed inspection of the whole engine bay.

Its very close now. The wife has been saving $$ and as soon as its running perfect, she is getting me a new paint job. Oh, happy day.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Postby CMS-GT4 » Sat Dec 15, 2007 6:20 pm

Swap is pretty much done now. My last problem to figure out is to get the A/C working. Anyone have any tips on such? The clutch does not kick over on the compressor, so is there something different I need to hook up? I want to have the AC fixed come summer.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Postby CMS-GT4 » Mon Jun 30, 2008 7:57 pm

Now working on making the 185 AC work with the 205 setup.

http://www.alltrac.net/phpBB2/viewtopic ... 805#266805
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Postby CMS-GT4 » Wed Jul 30, 2008 10:27 pm

My swap, pretty much finished.
Image

Here is the thread where I am trying to figure out he AC.
http://www.alltrac.net/phpBB2/viewtopic ... highlight=
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Re: Ahead of the curve?

Postby MR2 Guru » Thu Aug 07, 2008 8:59 pm

3sgte4me wrote:You may be well ahead of the curve on this install. And as such you're figuring out all of the gremlins and how to fix them. 8)

Im following the posts, and frankly..Im impressed.

Im curious how this might all work out in a st165 :D


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Yes, its WRC :)

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Swap Completed - 8/2006, finishing wiring and suspension and wheels - 6/2007, Daily Driving an ST205 WRC powered ST165 - Priceless!
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Postby CMS-GT4 » Sun Sep 21, 2008 12:17 am

A note to add for those who do a swap. Buy all new ignition parts. Plugs, wires, cap & rotor. Test your O2 sensor and buy 2 sets of plugs.

Use a set of cheap copper plugs for trouble shooting and testing then use what ever plugs you want after wards. I ruined a set of un-cheap plugs setting my car up.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Re: st205 swap faq/ and parts compatibility

Postby aus jd 2703 » Thu Feb 11, 2010 2:03 am

ok im a lil busy right now but i plan to read through all 15 pages but can some one give me a crash course on how to install an st205 ecu and engine in a 185? is it easier to use the 185 engine harness or the 205 engine harness? i was planning to use the 205 engine harnes but from what i read u guys are saying use the 185 harness with 205 ecu on a 205 engine?
engine is about to go in the car and if i have to change the engine loom id rather do it out the car as i have way more room.
cheers guys just looking for a summary before i read all 15 pages.
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Re: st205 swap faq/ and parts compatibility

Postby aus jd 2703 » Mon Feb 15, 2010 4:25 am

quick question:
how do u wire the 205 alternator into the 185 harness? cheers guys its coming along well 185 loom is slowly getting ready for 205 engine still nt sure what to do but trying to get info.
did u guys use the 185 igniter or the 205 igniter with the 185 loom?
cheers guys
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Re: st205 swap faq/ and parts compatibility

Postby CMS-GT4 » Mon Feb 15, 2010 3:39 pm

No time to summarize, but you may get questions answered now and then.
TO swap the alternator, just change the plug on the harness. Remove the 185 plug, and solder the st205 plug. This is what you will be doing for all the items that require a new plug.

I know its a lot, but I suggest reading the whole thread, and take pics and notes of all your vacuum lines on the 205 engine. It would also be wise to post your pics and progress here as it will help some help you if you have an issue, and it also add to the data of what one has to do to do the swap.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
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Re: st205 swap faq/ and parts compatibility

Postby aus jd 2703 » Fri Feb 19, 2010 11:46 am

ok i swapped the plate of the 185 compressor to the 205 compressor so the hard lines will mate up and was just going to cut the wires and put the 205 plug on the 185 loom, also the pressure sensor from the st205 is a different thread to the 185 should i find an adapter or will the 185 sensor work? im planning to run r134a btw
next ill be changing the evaporators around so i can run 185 hardlines but a r134a expansion valve.
does this seem right to u guys? will this work? cheers
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Re: st205 swap faq/ and parts compatibility

Postby CMS-GT4 » Fri Feb 19, 2010 3:15 pm

I ended up just going back to my 185 compressor. I did not seal the 205 compressor well, so it got corroded inside.

BTW: Make sure you go find the download for the 185 and 205 BGBs. I suggest buying a 185 BGB if you can.

Keep the 185 harness, and only swap the plugs, that you need to swap. Learn to read wiring diagrams if already can't.

Which pressure sensor do you mean? On the AC? Or boost? You will need to make some adapters for a couple of vacuum lines.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Re: st205 swap faq/ and parts compatibility

Postby aus jd 2703 » Fri Feb 19, 2010 9:07 pm

i was meaning the pressure sensor on the ac should i swap sensors?
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Re: st205 swap faq/ and parts compatibility

Postby CMS-GT4 » Fri Feb 19, 2010 9:11 pm

I can not remember from memory. I don't have my car right now, but honestly if your 185 AC works, I would just use it. Remember to put some silicone grease of some sort on the connection plate. I ruined my 205 compressor cause I did not do that.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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