Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Wiring sucks...its a foregien language to me too...lol...i just recently learned what a relays does, but still dont know how to wire one up..lol

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

lol don't worry, I consider myself to be pretty wiring savvy and I still can't wire a relay up without a diagram.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Relays are pretty simple really. The two main types:

SPDT Relay: (Single Pole Double Throw Relay) is an electromagnetic switch, consist of a coil (terminals 85 & 86), 1 common terminal (30), 1 normally closed terminal (87a), and one normally open terminal (87). When the coil of the relay is at rest (not energized), the common terminal (30) and the normally closed terminal (87a) have continuity. When the coil is energized, the common terminal (30) and the normally open terminal (87) have continuity.

SPST Relay: (Single Pole Single Throw Relay) an electromagnetic switch, consist of a coil (terminals 85 & 86), 1 common terminal (30), and one normally open terminal (87). It does not have a normally closed terminal like the SPDT relay, but may be used in place of SPDT relays where terminal 87a is not used.

When energizing the coil of a relay, polarity of the coil does not matter unless there is a diode across the coil. If a diode is not present, you may attach positive voltage to either terminal of the coil and negative voltage to the other, otherwise you must connect positive to the side of the coil that the cathode side (side with stripe) of the diode is connected and negative to side of the coil that the anode side of the diode is connected.

WHAT??????:blah::blah::blah::blah::blah:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

If you have relay with the little picture on the side it pretty easy to understand. On Most relays 87a and 30 idle together(30 is like the hinge on a lever inside the relay) when the coil sees power on one side and ground on the other then the lever inside the relays flips to make contact to between 87 and 30. Just remember one of the conections to the coil will not be constant it will be some kind of trigger.



If you guys ever have any questions feel free to pm me. I have been doing car stereo since flipper was a minnow.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

lol..

I have one question you guys,,, I installed a autometer tach on my 5.3 swap, actually I installed all autometer gauges(used from cl) got a good deal any ways!!!! the speedo,temp,fuel,volts,oil pressure all worked except fort the tach, I know i have it hooked up right ,, I read some at lt1swap that I have to install a 680ohm resistor 1/4 watt , one end to 12V and the other end to wire from pcm to tach, I went to radioshak and only one I found was a 680 ohm 1/2 watt,, any thought on this?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

If it is a tach that lets you select the number of cylinders, select "4" and it should work fine.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

hey bob the "fred mod" that some performed on the pass motor mount plate, is that necessary.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Only to run the 5.3's A/C compressor in it's OEM location.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

oh ok i was planning to get the aftermarket bracket that moves the compressor topside.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

hey bob one more question. i bought my adaptor brackets from the ebay guy. is my driveshaft going to be ok with that setup.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Doesn't have a way to change to 4cyl. But from autometer it should work. I read from lt1 that all 2003 and up he had to use the resistor cuz the signal not being strong enough. I just could find a 1/4 watt resistor

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Which tach do you have? Part number please? Most autometers have loops that you cut to select 4,6 or 8 cylinders.

As far as the resistor I wouldn't think the resistor being 1/2 watt in stead of 1/4 watt would not matter.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Hey Bob, question about your 3.42 rear gear. With the 4L60e, are you happy with that gear? I am about to pull the rear out from under the blazer and put a posi & gears in it (it has a 3.07ish in it now) and since the plan now is to put the 5.3 and the 4l60e in it now, so I thought you would be the man to ask ;). I'll be running a 28" tall tire.

Thanks,

Ed

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Love it! It's the perfect all around gear in my opinion. On the interstate at 80mph the engine is turning just over 2000 RPM. Right when I want it. :D

** Edit to add - I'm running a 28" tire too.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Thanks for the quick feedback! I will order them right now then :).

Is the a/c done yet ;)

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

And, now there ordered , along with an Auburn posi that I found for a smokin' deal and all the bearings and seals :metal:

I'll be askin' you lots of questions now that I have made the decision to put the 5.3 in the Blazer ;)

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Where did you find the set up.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

LOL, funny you ask. The parts house just called to say that the condenser I ordered is in. I have all the major parts I need other than o-rings and the manifold seals. I can probably get those tomorrow.

Ask away!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Hey BigDNew, I shot you a pm so I'm not hijacking Bob's thread...too much ;)

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Wouldn't the stock condensor work? Or was it "time" for one?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

ditto, sorry bob.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

No problem guys!

I wanted to replace the condenser and the accumulator with new ones, 1] because of switching from R12 to R134A it is easier to just swap them than to clean them both of the old refrigerant and oil, and 2] the OEM condenser was a little ratty looking and was tweaked here and there. The accumulator had already been replace some time ago with a R134A compatible one, but it was only $30-something for a new one so I figured WTH.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Gotcha! And I always replace the accumulator if I open the system...it's will get contaminated with a quickness.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Bob,
Is it the R12 oil or residue that kills the direct swap out to r134? I think the 86 has been changed to r134 not sure. I know the "descicant dryer" should be changed any time the system is cracked, but not sure about the accumulator.?
I thought about just changing the dryer and orings and doing the r134 conversion, I assume since I don't know what is in there I should just change everything? You know how much that will cost on the oem parts not LS? Remember, this is a super low buck project.here

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

The receiver drier and accumulator is the same thing basically.

If you blow out the system you should be OK with just the accumulator. A new one was $30-something, and the condenser was $110.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Okay thanks, I was thinking the accumulator is the coil that the fan blows the cold air across. My bad.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

That one is the evaporator.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

There will be absolutely no R12 left after a proper vacuum. The accumulator does need to be R134A compatible due the desiccant bags. R134A will generally destroy the R12 bags. The old oil (3G mineral oil) does not need to be removed. The old oil will settle in the low points and in the compressor and not affect the system any more. A little 3G oil will keep the compressor a little cooler.

[QUOTE=glock35ipsc;3896883]The receiver drier and accumulator is the same thing basically.

Not even close. The are the opposite of one another. Both do have desiccant bags. The receiver only lets high pressure liquid pass and the accumulator only lets low pressure gas pass. The receiver system uses a TXV system and the accumulator uses an orifice system.

Replacing the desiccant any time you open the system is completely unnecessary unless you leave the system open for many hours, like all night with high humidity. A good vacuum pump will be able to pull out any moisture after a few hours. Vacuum is of utmost importance when servicing a refrigerant system.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

*Subscribed*

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

So where is the receiver on my 85?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I dont know the part # however
just in case some of you run into the same problem when installing a tach. I did the resistor trick, and it works... just the needle kind of vibrates but works good,, here is a pic.... sorry about the constant threadjacking Bob gonna start my own so I can stop jacking threads lol

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

this should be the tach you have but you have to use a paper clip to flip switches.

http://www.autometer.com/productPDF/...sh%20tach).pdf

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I'm slowly working on it. Really busy at work and home.

As for the fuel line, I'm replacing the line from the filter to the furl rail. It's about 4' or so, and I'm jut not all that comfortable with that much rubber. So I'm just replacing that stretch with braided. I should have done that from the beginning, but I didn't.

Got a late start today after having brunch with my wife's side of the family, then gathering a couple more needed parts. So far I have the AC compressor mounted and a new WeatherPack connector on it. Have the old trans cooler lines out, cut back to just above the starter, and have the AN fittings on them. Came inside for a cup of java and I'm on my way back out now.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

:metal:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Orifice tube systems do not have receivers. They have accumulators, which you have.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

That's kind of what I meant when I said they are basically the same thing. It either has a receiver, or an accumulator. Not both. Yet they both share the same basic functions of filtering debris, storing liquid, and removing moisture.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Good progress again! I say A/C is over rated...of course I say otherwise as soon as it hits 80* here. So, real A/C would be nice in the truck. (Instead of the "2-50 air")

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I know, right?! 'Cause it's like, we're in Colorado. And it snows year 'round! :lol:

My new helper, ready to....um, help: :D
http://i191.photobucket.com/albums/z...c/P1010616.jpg

It's back in!!! The connections are a little tight, but it'll work. I bent them up and toward center just a little. The bottom one in the pic will get either a 90° or 135° fitting so it can run up between the heater hoses and the rad hose, and the top on will get a 45° so it can come up and around the front side of the rad hose. The shroud is just sitting in there loose, it's not really that close to rad hose.:
http://i191.photobucket.com/albums/z...c/P1010628.jpg

http://i191.photobucket.com/albums/z...c/P1010630.jpg

Little did I know at the time, but the lines will easily clear the bracket I made for the MAF/air cleaner! I'll use a 90° fitting on the top so I can run it down and under the air cleaner:
http://i191.photobucket.com/albums/z...c/P1010627.jpg

I'm going to use all new lines, but I used the old stuff to mock it up so I could measure for the new lines:
http://i191.photobucket.com/albums/z...c/P1010631.jpg

Shop manual!
http://i191.photobucket.com/albums/z...c/P1010632.jpg

I cut both trans cooler lines off near the starter, then added the AN fittings and ran SS braided up to the radiator. The lines are now ran under the engine stand along the inside of the frame and completely out of the way of the compressor:
http://i191.photobucket.com/albums/z...c/P1010624.jpg

New fuel line (top), old fuel line (bottom):
http://i191.photobucket.com/albums/z...c/P1010633.jpg

I'll probably run to NAPA today and get the 90°, 135° and 45° fittings for the compressor end so I can see what is going to work the best. Once I figure that out, I'll have them crimp the 2 fittings on to about 4' of hose. Then I can figure out the best way to route them and mark the hoses where they need to be cut and the orientation of the fittings to be crimped on the other end.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Looking good as always Bob, cant wait to see the truck again in July!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Thanks! I'm really looking forward to July.

I got everything ordered for the AC just a little while ago. Hose, fittings, o-rings, sealing washers, solder.... all that jazz from Docs Blocks. About $52 for all that! Not bad. Also ordered a new aluminum line that runs from the evaporator to the condenser.

I also bought a crimp tool for the hose fittings. I'm sure I could take the hoses to someone to do the crimping, but I like doing this stuff myself. And I know it will see use again. My brother needs to put new hoses on his 72 soon, and the 69 my Dad is building will be getting AC also.

http://www.ntxtools.com/Merchant/gra.../mtc-71550.gif