 gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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02-26-08 07:46 PM - Post#1375505
I started the intake gasket replacement today. I'll do a write up at the end. I moved more stuff than necessary however the intake was easier to remove. The intake was very loose. The gasket was broken in several places. The driverside gasket was bad. Water was up and down the entire line. Look at the pictures for details.
The entire system will be flushed for conversion to green antifreeze. The Dex-cool radiator looked like it had mud in it.
The fun begins tomorrow! Clean up and install. 
(The following link provided by jpsage.
Additional info at http://www.handymanlyness.com/archives/auto/repair...
The above article goes about removing several parts. I didn't remove all the parts listed. Especially the A/C compressor. I just moved it forward and bolted down with the rear bolts temporarily.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
Edited by gchemist on 02-16-11 12:01 PM. Reason for edit: No reason given.
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SleeperSS
Senior Member
Posts: 1813
Loc: Spanaway, Wa
Reg: 10-17-04
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02-26-08 10:29 PM - Post#1375635
In response to gchemist
When you replace the manifold, get a couple of studs for the heads to locate the manifold so that the sealant on the ends don't get mushed around.
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malibu101
Very Senior Member
Posts: 1743
Age: 46
Loc: Walnutport PA
Reg: 11-20-00
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02-29-08 09:54 AM - Post#1377380
In response to SleeperSS
I just saw this thread after the other one about removing the thing one the throttle plate.
I see a heater core. Smart idea to replace it but you'd better learn a few new swear words when you find out that the dash has to come out to access it.
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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03-02-08 06:33 AM - Post#1378538
In response to malibu101
I found evidence the core had been previously replaced. Screws were missing from some lower panels. I left the core alone. I hooked up the hoses and flushed with water. I wanted to get out all Dex stuff before converting to green coolant. The flush did get rid of the dreaded gargaling noise common with these cores. The new radiator works great. The engine is running a lot cooler. I'll post the final install pictures later this week. I even modified the thermostat too.
The transmission likes the external cooler. It shifts differently. No leaks so far oil, tranny oil or water!!
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
Edited by gchemist on 03-02-08 06:34 AM. Reason for edit: No reason given.
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daveh
Member
Posts: 15
Reg: 01-28-05
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03-02-08 12:35 PM - Post#1378780
In response to gchemist
I am in the middle of the intake gasket swap on my 2001 Jimmy right now. I have found a couple of references to a final torque of 11 ft-lbs and to use some loctite on the bolts. The only thing I haven't found is the correct torque pattern for the 8 bolts. Anyone know this?
Dave
Rodney, MI
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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03-02-08 06:00 PM - Post#1378958
In response to daveh
My service manual has the pattern. I can post the sequence tomorrow. I let mine sit for at least 12 hours for the intake silicon seals to cure. No problems after driving around 3 days.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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08-23-08 05:57 PM - Post#1506290
In response to gchemist
Making topic a sticky
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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dugman67
Member
Posts: 35
Age: 46
Loc: Kentucky
Reg: 01-11-04
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01-15-09 02:17 PM - Post#1607752
In response to gchemist
My turn...my turn....  I just noticed the front seal of the intake leaking antifreeze. Yes i still have the dex crap in it  I'm just debating to do it myself in 20 degree weather (no garage) or pay to have it done  Do you have to replace the lower or just the upper gaskets? I checked the prices and they better not leak at those prices. I need an older car or truck to play with. But that's another story. If I do it myself, any tips?
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83_Burbin
Member
Posts: 158
Loc: NE Wisconsin
Reg: 04-28-03
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04-23-09 05:20 PM - Post#1683545
In response to dugman67
Gchemist, how hard was "Burping" your system ? I found when changing my water pump, it took getting pretty hot to get it flowing ... runs a little warm at first am run but, fine once the t'stat opens ... Q ... is this a sign of time to replace ? I did pump, lower hose, belt and idler pulley. Did the wrong one, ... still have the squeak  , have to do AC idler now. Mine already had the green put in it ... got lucky there (maybe '95 had green, I dunno).
Old Chevies Never Die, They Just Rust Away
'95 S-10 4wd
'03 Mercury Sable
'01 Coleman Santa Fe
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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04-24-09 04:55 PM - Post#1684320
In response to 83_Burbin
Thermostats are not made the same. What brand did you use? After my conversion, I have a problem in actually heating the engine up. Every now and then, I get a coolant not hot enough code. I contribute the code to the two holes I drilled into the thermostat. The holes were drilled to help air get out and for water flow before the thermostat opens. I simply reset the code. No problem since the conversion to the yellow/green stuff.
Park your truck on ramps. Rev it up a little. The angle will help get the air out of the heater core. My gargled until all the air was removed.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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SleeperSS
Senior Member
Posts: 1813
Loc: Spanaway, Wa
Reg: 10-17-04
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04-24-09 07:09 PM - Post#1684429
In response to gchemist
The easiest way is to get a Prestone Flush & Fill kit...<$6. I've never had any issues since using this.
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SleeperSS
Senior Member
Posts: 1813
Loc: Spanaway, Wa
Reg: 10-17-04
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05-27-09 06:28 PM - Post#1705777
In response to gchemist
I'm doing my bro-in-laws ZR2 tomorrow and I can't seem to find bolt sequence...do you have it handy???
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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05-27-09 06:35 PM - Post#1705779
In response to SleeperSS
Start from the center and go across back and forth.
First pass tighten to 26 inch lbs. (3 Nm)
Second pass tighten to 106 inch lbs. (12 Nm)
Final pass tighten to 11 ft. lbs. (15 Nm)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
Edited by gchemist on 05-27-09 06:37 PM. Reason for edit: No reason given.
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SleeperSS
Senior Member
Posts: 1813
Loc: Spanaway, Wa
Reg: 10-17-04
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05-27-09 08:19 PM - Post#1705848
In response to gchemist
Cool...thanks
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48Butch
Senior Member
Posts: 133
Loc: Renton, WA
Reg: 10-17-01
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07-22-09 02:40 PM - Post#1740019
In response to gchemist
Hey gchemist -- Hows the write-up coming along? Or is it filed elsewhere?
Butch
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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07-22-09 06:18 PM - Post#1740160
In response to 48Butch
Oh, I guess I forgot to write it up. What do you need to ask or know? Several board members have changed out leaking lower intake gaskets. Checkout the other sticky for more information.
http://www.chevytalk.org/fusionbb/showtopic.php?ti...
You can remove the upper intake seperately or as one piece with the lower intake.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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gchemist
Senior Chevytalk Moderator
Posts: 20824
Loc: Austin, TX 78748
Reg: 05-09-00
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07-27-09 09:56 PM - Post#1743172
In response to gchemist
A great writeup on a lower intake gasket replacement is available.
http://d-tips.com/General/Articles/arti cle.aspx?id...
It's a little over kill by remove the fan shroud and pulleys. The A/C compressor can be moved forward and bolted with the rear bolts. The bolt underneath the compressor can be removed with a crow foot wrench. The fuel lines are easier to unscrew using crowfoot wrenches too.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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GMResto327
Forum Newbie
Posts: 23
Loc: Queens NY
Reg: 01-11-10
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01-19-11 08:26 PM - Post#2034461
In response to gchemist
My 99 blazer 4.3 intake is also leaking what. Is advantage of converting to green over orange what is also needed to do to convert back to green
Derek
66 caprice 66 chevelle 66 panel 87monte |
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SleeperSS
Senior Member
Posts: 1813
Loc: Spanaway, Wa
Reg: 10-17-04
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01-19-11 08:39 PM - Post#2034470
In response to GMResto327
The advantage is that green will not sludge up the system. Get some Prestone Cleaner...not Flush. Run it for 3-6 hours. It can be over several days. Install a Prestone Flush & Fill kit and follow the instructions.
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popcorn89
Contributor
Posts: 178
Reg: 12-22-10
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02-22-11 09:44 AM - Post#2050288
In response to SleeperSS
i know this may be a little off the subject but here a video of them taking the intake manifold
http://www.youtube.com/watch?v=cpWjF1NRfk8&a mp;pla...
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