I forgot where this bracket goes!
Safety Car
Joined: Jan 2004
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I know mine has that long brace going from the top of the compressor to the exhaust stud. But do you have a pic of that short brace you are talking about that is down to the fuel pump block off plate stud?
As I'd like to see if I have that brace as well.
Last edited by samsonb; May 21, 2010 at 09:56 PM.
Le Mans Master
Joined: Aug 2000
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From: Australia
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
As a note ,
because of the p***weak design of the bracket and the compressor offset from the engine, GM had to add all the extra scrap metal to stiffen it up .Note the strength / size of the LT1 accessory mounting bracket
Because they are " delete" options for some people when reinstalling A/c ,many future owners have problems with A/c vibration not knowing the factory braces are missing.
I sold one guy a compressor because he thought his compressor was bad because of vibration.In talking to him ,I mentioned the braces.Sold him the two smaller braces which he fitted to his original compressor and problem went away
because of the p***weak design of the bracket and the compressor offset from the engine, GM had to add all the extra scrap metal to stiffen it up .Note the strength / size of the LT1 accessory mounting bracket
Because they are " delete" options for some people when reinstalling A/c ,many future owners have problems with A/c vibration not knowing the factory braces are missing.
I sold one guy a compressor because he thought his compressor was bad because of vibration.In talking to him ,I mentioned the braces.Sold him the two smaller braces which he fitted to his original compressor and problem went away
Safety Car
Joined: Jan 2004
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Thanks. 89 must not have that. As I went out and looked again and there is no hole there by the tensioner for a brace to bolt onto. Plus, that area that brace bolts to looks different on my 89.
Do you have a close up pic of the bottom of the AC Compressor where that center brace is bolted at? As I wonder if my 89 is even supposed to have that. Right now, there is just the end of the bolt sticking out from the threaded hole in the bracket. I'll have to get a pic of it later.
Do you have a close up pic of the bottom of the AC Compressor where that center brace is bolted at? As I wonder if my 89 is even supposed to have that. Right now, there is just the end of the bolt sticking out from the threaded hole in the bracket. I'll have to get a pic of it later.
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Au contraire, Josh. My 89 also has the lower brace pictured above. Theres a stud in the upper right fuel pump cover and a hole in the A/C bracket (between the tensioner and hose cutout).
Here's a closeup pic. (Mine have now been baked with black paint).
In fact, I completely reversed colors on the pullies and brackets...
Here's a closeup pic. (Mine have now been baked with black paint).
In fact, I completely reversed colors on the pullies and brackets...
Last edited by GREGGPENN; May 22, 2010 at 12:09 AM.
Le Mans Master
Joined: Aug 2000
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From: Australia
Pic is of a '89 engine I pulled.'90 engine I have on the floor at present is the same
Any closer and all you will see is the hole .Top bracket hole is in A/c mounting bracket as shown .Greg's pic show it from the inside
Any closer and all you will see is the hole .Top bracket hole is in A/c mounting bracket as shown .Greg's pic show it from the inside
Last edited by rodj; May 22, 2010 at 12:42 AM.
Safety Car
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Au contraire, Josh. My 89 also has the lower brace pictured above. Theres a stud in the upper right fuel pump cover and a hole in the A/C bracket (between the tensioner and hose cutout).
Here's a closeup pic. (Mine have now been baked with black paint).
In fact, I completely reversed colors on the pullies and brackets...
Here's a closeup pic. (Mine have now been baked with black paint).
In fact, I completely reversed colors on the pullies and brackets...
I will have to go out and look again and take some pics. As when I was out there, I felt around the bracket where that coolant hose goes through. And I couldn't find that bolt hole.
Safety Car
Joined: Jan 2004
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I'm gonna check it out again. I felt around there and couldn't feel a hole or see one. But I will check again.
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Safety Car
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I checked my 89 out again. And there definitely isn't a hole there for that brace:
Heres a pic of that block on mine:
And I wonder if mine is even supposed to have that center brace? As the top water pump stud looks rather short. Not sure if there would even be enough there to put the nut on if I was to get that brace?
Heres a pic of that block on mine:
And I wonder if mine is even supposed to have that center brace? As the top water pump stud looks rather short. Not sure if there would even be enough there to put the nut on if I was to get that brace?
Le Mans Master
Joined: Aug 2000
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From: Australia
I don't recall any extra brackets with the Harrison unit used on the early years
Maybe we need to compile a list of what years had what brackets from "original , unmolested" cars?
Le Mans Master
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From: Australia
Maybe the brackets were a production change to solve the vibration problems I mentioned above
When GM had problems they weren't about to design a new bracket so they the added the braces
Safety Car
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88 is the year they started putting in the Nippodenso compressors.
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Thread Starter
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If you could get that wpump stud out (w/o removing it), the mod seems like it would be fairly easy. (Assuming you can get your A/C bracket marked for a hole easily enough.)
Safety Car
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Based on your pics, it looks like you'd have to pull your waterpump. (At least I don't see enough stud to double-nut and extract it as-is.) If/when you get that stud out, you could install a longer one, drill the hole in your A/C bracket, install a longer stud at the top right of your fuel pump cover and you'd be ready to go.
If you could get that wpump stud out (w/o removing it), the mod seems like it would be fairly easy. (Assuming you can get your A/C bracket marked for a hole easily enough.)
If you could get that wpump stud out (w/o removing it), the mod seems like it would be fairly easy. (Assuming you can get your A/C bracket marked for a hole easily enough.)
