Eco head temp info needed - Performance Forum

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Eco head temp info needed
Thursday, February 12, 2009 9:51 PM
Can anyone find out what the temperature of the head is around the injectors on a L61?


Trevor Mullins wrote:

kind of like a screwed up kids sing along

pete the anal monkey lived in my bum..............


best epiosode of barney ever lol


Re: Eco head temp info needed
Friday, February 13, 2009 1:42 PM
That's an odd request... What are you trying to rig? Injector O- rings?



Re: Eco head temp info needed
Friday, February 13, 2009 2:20 PM
Im going to try to mold injector cups so the LSJ injectors fit snugly with the 03+ fuel rail. I need to know so i can get a material that wont melt.


Trevor Mullins wrote:

kind of like a screwed up kids sing along

pete the anal monkey lived in my bum..............


best epiosode of barney ever lol

Re: Eco head temp info needed
Friday, February 13, 2009 4:06 PM
I might have those plastic injector cups that sit in the head...
Re: Eco head temp info needed
Friday, February 13, 2009 4:20 PM
285whpcavy wrote:I might have those plastic injector cups that sit in the head...


they don't help. what is trying to be researched here is a replacement injector cup that is long enough to snugly seat LSJ injectors (or other short injectors) so you don't have to worry about fuel or vacuum leaks because of an unseated injector. The distance pretty much has no room for error with the stock cups and the 03-05 fuel rail.

Also, the way the rail is designed, makes slotting the mounting holes to move the rail closer impossible. You'd not only have to slot the holes, but also machine the mounting flanges of the rail in order for it to move diagonally towards the injector ports.


I still think aluminum would be the best option. I'm going to see if I can make a set in my spare time at work after I take some measurements.






Re: Eco head temp info needed
Friday, February 13, 2009 5:09 PM
Ok I get what you are say now.. Sorry about that I should of read more closely.
Re: Eco head temp info needed
Friday, February 13, 2009 5:16 PM
have you considered cutting the mounting tabs off the rail itself welding new tabs on so let it sit lower? The the tabs would be welded to the top more then the side. that would seem easier then making injector cups



Re: Eco head temp info needed
Friday, February 13, 2009 5:32 PM
I cut the tabs off halfway through my s/c install and used some all-round to secure it tightly
Re: Eco head temp info needed
Friday, February 13, 2009 5:44 PM
Darkstars wrote:have you considered cutting the mounting tabs off the rail itself welding new tabs on so let it sit lower? The the tabs would be welded to the top more then the side. that would seem easier then making injector cups


lack of an aluminum-welding capable welder.. that seems like more work to me.

Machining aluminum cups wouldn't be that hard in all honesty.. and perfectly repeatable even on a hand mill or a lathe (no need for a CNC machine).

I'm going to try my hand at it soon for my '04.. in tandem with tinkles and cody.. see if maybe the 3 of us can't come up with some kind of solution






Re: Eco head temp info needed
Friday, February 13, 2009 6:50 PM
Im looking into silicone molding them and dont want to use anything that will melt during use. So if anyone can find out the temp of the head around the injectors, it would be very helpful.


Trevor Mullins wrote:

kind of like a screwed up kids sing along

pete the anal monkey lived in my bum..............


best epiosode of barney ever lol

Re: Eco head temp info needed
Saturday, February 14, 2009 9:39 AM
Well, how hot does your thermostat read? 180*?, 240* on a hot day? Just play it safe and find something that has the highest melting point you can find for the best price of material.




Re: Eco head temp info needed
Saturday, February 14, 2009 9:47 AM
Wow, i havent thought of that.

/end sarcasim.


The problem is that guessing isnt good enough for me. The last thing i want to do is to waste my money on the wrong material or have them melt on people because the actually temperature is too high.


Trevor Mullins wrote:

kind of like a screwed up kids sing along

pete the anal monkey lived in my bum..............


best epiosode of barney ever lol

Re: Eco head temp info needed
Saturday, February 14, 2009 10:01 AM
I would have thought that since the thermostat is IN the head, that it would show a roundabout temperature.

If I am wrong, sorry then.

/ no sarcasm intended.



Re: Eco head temp info needed
Saturday, February 14, 2009 10:04 AM
Once I get off my ass and send the measurement to LZM, I am getting him to cut me aluminum spacers to put under neath the gray cups so that they'll sit high enough...

But if your successful i'll prolly buy whole replacements... Or just buy some better injectors when I up the boost higher than the 3.0" pulley.



Re: Eco head temp info needed
Saturday, February 14, 2009 10:09 AM
Borderlin3 wrote:I would have thought that since the thermostat is IN the head, that it would show a roundabout temperature.

If I am wrong, sorry then.

/ no sarcasm intended.


There are also 1000+ degree exhaust and combustion temps in the head too.


Trevor Mullins wrote:

kind of like a screwed up kids sing along

pete the anal monkey lived in my bum..............


best epiosode of barney ever lol

Re: Eco head temp info needed
Saturday, February 14, 2009 10:17 AM
Yeah, on the exit side.

Like everyone is saying, use aluminum.

1200* melting point.



Re: Eco head temp info needed
Saturday, February 14, 2009 10:36 AM
PJ was the only one talking about making the cups from aluminum. But what has to be looked at is the cost and effort needed to make them. Im sure PJ will be successful machining them from aluminum, but how much is that going to cost and how much time will it take? Same deal with me molding them. But after i mold one cup, then i can mold others easily and i can make as many as i want at one time(depending on the number of production molds that i make).


Bottom line JBOers are cheap and if they have to spend $100 on the proper fix or just rigging it to get by, they'll rig it. But if one of us can make then cheaper there will be a greater chance that they'll do it the right way.

PJ and I have already discussed the topic and the only thing i need now is to know how hot that area of the head gets.


Trevor Mullins wrote:

kind of like a screwed up kids sing along

pete the anal monkey lived in my bum..............


best epiosode of barney ever lol

Re: Eco head temp info needed
Saturday, February 14, 2009 10:59 AM
i dont understand, my lsj injectors fit fine in my head. i have a 04. no problems


Built&Boosted moar
04 Cavalier Turbo r.i.p my baby
2nd place 2009 GM tuner bash qwick 8--holla

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