Dyno results for my 205HP Ecotec

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Expand view Topic review: Dyno results for my 205HP Ecotec

Re: Dyno results for my 205HP Ecotec

by Terry Kennedy » Thu Jan 07, 2010 6:44 am

[quote="Spanky"]
I would not have ever thought this 15 cent part would be so hard to source.[/quote]

The folks over at Crate Engine Depot have posted scans of the illustrated parts breakdowns for the LSJ engine. The direct link is here, though that may go dead (find it on page 2 of "Top > Engine Components > Ecotec & 4-Cyl Components > Cobalt LSJ Engine Parts Listings").

Of course, before I found that web reference, I set up the complete Microcat system here:

Image

Re: Dyno results for my 205HP Ecotec

by Terry Kennedy » Thu Dec 24, 2009 11:17 pm

[quote="silver"]
I bet it's that corregated clear plastic tube, that thing looked very prone to cracking
[/quote]

Nope. It is the supply and return fittings on the "lid". This eBay seller has been selling the recall kits for a year or so - apparently the Aveo was previously recalled for this.

I think one Atom owner had the fitting snap when removing the fuel line, though I don't know if that was due to this defect, too much force when removing it, or installation damage at Brammo.

The interesting thing is that Volvo just had a recall for the same problem, with a similar list of "hot weather" states affected.

NHTSA has the supporting documents for both of these recalls. I submitted a request to have them compare the two and see if a common vendor was involved, as this may affect many other brands/models.

Re: Dyno results for my 205HP Ecotec

by silver » Thu Dec 24, 2009 10:30 pm

:doh:

Re: Dyno results for my 205HP Ecotec

by Radowick » Thu Dec 24, 2009 9:25 pm

I found this today:  http://www.autoblog.com/2009/11/04/gm-r ... ac-g5-mod/

Anybody know if our pumps are subject to the same problem?

Re: Dyno results for my 205HP Ecotec

by silver » Thu Dec 24, 2009 4:31 am

then come's removal of engine, replaced by v8 hartley motor, then adding on sidewinder missles and jetpack ejection seats....... >:D

Re: Dyno results for my 205HP Ecotec

by Radowick » Thu Dec 24, 2009 4:20 am

[quote="silver"]
I do recall the yelllow one being on the driver's side, therefore the air passes over the yellow one last (or close to last)

good luck
[/quote]

That agrees with mine.

Oil cooler is moved after making a new length oil line. New straight shot side air intake is installed except for install of MAF. Next is fuel pump gasket replacement.

Re: Dyno results for my 205HP Ecotec

by silver » Thu Dec 24, 2009 4:09 am

I do recall the yelllow one being on the driver's side, therefore the air passes over the yellow one last (or close to last)

good luck

Re: Dyno results for my 205HP Ecotec

by Radowick » Thu Dec 24, 2009 4:07 am

Thanks. That is a straight forward way to verify.

Re: Dyno results for my 205HP Ecotec

by DarthChicken » Thu Dec 24, 2009 3:46 am

if you put it in backwards, the car won't start.. or rather, will start, but won't keep running.

Re: Dyno results for my 205HP Ecotec

by Radowick » Thu Dec 24, 2009 3:40 am

The MAF sensor looks like it can be put in backwards if someone is not careful. And the photo I took of my MAF sensor before dis-assembly shows me the air flow passes by the sensor from the brown wire side to the yellow wire side. Is that correct?

Re: Dyno results for my 205HP Ecotec

by silver » Sat Nov 28, 2009 5:20 am

The other note worthy comment is that your duel injectors need to match your tune

Re: Dyno results for my 205HP Ecotec

by DarthChicken » Sat Nov 28, 2009 1:28 am

loosen fuel rail, spin injector, retighten.

Re: Dyno results for my 205HP Ecotec

by Radowick » Fri Nov 27, 2009 9:57 pm

Today, I installed the replacement clip on my fuel injector...........but (there is always a "but") when I went to slide the 4 nozzles into head bushings, one of the fuel injector's (2nd from the right side) electrical connection hits the top of the supercharger housing. I went ahead and snugged up the 2 fuel rail mounting screws to see if the clash got worse or better. It looked like it got pushed up even tighter.  I pulled it back out and looked closely at the connection and it has been rubbed on for a while because some of the plastic is gone. And yes, I have it oriented correctly. I triple checked it.
  So why when Brammo decided the fix for the 300 was to "upgrade" it to a 245, why didn't the just use the Cobalt injectors (42 pounders)? What was to be gained by using these special 45 pounders? Especially since they don't fit (on my car at least).
  I am not liking this rubbing situation. If I just bite the bullet and open my wallet and buy a set of the Cobalt spec stage 2 42 lbs. injectors, it will require a harness for it with a differant electrical connection for each injector. But will the connection on the other end interface properly with the Atom? 

Re: Dyno results for my 205HP Ecotec

by Terry Kennedy » Wed Nov 25, 2009 1:40 pm

[quote="Spanky"]
I waited until I had the kit in hand before posting those part numbers. [/quote]

Great, thanks!

Re: Dyno results for my 205HP Ecotec

by Radowick » Wed Nov 25, 2009 1:38 pm

I had waited until I got the kit in hand and checked the contents before making the earlier post about the part numbers.

Contents: 4 correct clips for LSJ's bigger fuel rail/injectors
              4 top end of injector O-rings
              4 nozzle end of injector O-rings
              2 fuel line O-rings

The differant O-rings are packaged in seperate clear envelopes. The clips are also packaged in their own clear envelope with a GM/PN label on them. It is identified as:    GM/PN 12569089 injector clip spring 2307-02          

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