C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

84 A/C Delete

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Old Jan 24, 2011 | 08:54 AM
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Default 84 A/C Delete

I have ripped all the pipes, accumulator and condenser out and am left with the heavy and bulky compressor still in the belt train.

Can anyone point me to a place I can buy an A/C delete pulley / bracket for my 84?
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Old Jan 24, 2011 | 04:53 PM
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Originally Posted by oldalaskaman
This is not a crossfire arrangement! It is a TPI.

This is my 84 arrangement

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Old Jan 24, 2011 | 05:00 PM
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Originally Posted by oldalaskaman
found this over in the other forum,
You really need to get up to speed on the year to year differences on these cars
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Old Jan 24, 2011 | 05:07 PM
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Could this be as simple as removing the belt tensioner and compressor and then getting a shorter belt to run directly from the crank pulley to the AIR delete pulley picking up the water pump on the right hand side (to keep it going anti-clockwise) on the way?

Last edited by Lemme; Jan 24, 2011 at 05:17 PM.
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Old Jan 24, 2011 | 05:21 PM
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Originally Posted by oldalaskaman
The big difference between the TPI in the photo and my cross-fire (as far as belt routing) is the direction of the waterpump. Note the TPI waterpump in this photo runs clockwise whereas the crossfire waterpump runs anti-clockwise.
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Old Jan 24, 2011 | 05:56 PM
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Originally Posted by oldalaskaman
that pic looked like they took it off and got a shorter belt. I actually read his post about wanting to 'delete'; it and not see a picture of it.
They did but the '84 has a different arrangement where it has the PS bottle mounted in the Alt bracket so what you linked is not so straight forward on a '84
If you relocated the PS bottle like on the TPI cars that setup would be do-able

Originally Posted by oldalaskaman
you might get up to speed on 'reading"
I read it was for a 84; didn't you?

Last edited by rodj; Jan 24, 2011 at 06:04 PM.
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Old Jan 24, 2011 | 06:00 PM
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Originally Posted by Lemme
The big difference between the TPI in the photo and my cross-fire (as far as belt routing) is the direction of the waterpump. Note the TPI waterpump in this photo runs clockwise whereas the crossfire waterpump runs anti-clockwise.
Because that is not the stock TPI pump, it has been replaced with a std rotation pump as part of the belt reroute to get AC delete on a TPI car

Stock TPI pump is reverse rotation ( anti clockwise )
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Old Jan 24, 2011 | 06:12 PM
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Originally Posted by rodj
Because that is not the stock TPI pump, it has been replaced with a std rotation pump as part of the belt reroute to get AC delete on a TPI car

Stock TPI pump is reverse rotation ( anti clockwise )
Has anyone tried to rebuild a reverse rotation water pump by replacing the impeller with a stk rotation impeller ?
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Old Jan 24, 2011 | 06:17 PM
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Originally Posted by BLUE ONE
Has anyone tried to rebuild a reverse rotation water pump by replacing the impeller with a stk rotation impeller ?
Some have said they have no problems running the reverse rotation pump with the above belt arrangement
If you look at the vanes on the pump they don't have much curve so as to be directional; it is more a case of coolant coming in on the front of vanes and being thrown outwards
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Old Jan 24, 2011 | 07:40 PM
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Originally Posted by Lemme
I have ripped all the pipes, accumulator and condenser out and am left with the heavy and bulky compressor still in the belt train.

Can anyone point me to a place I can buy an A/C delete pulley / bracket for my 84?
I cant tell in your picture how your compressor mounts. If its the same as a 1987, then NAPA has the delete pulley. I bought one from NAPA a few months ago for my 87. Worked fine. The NAPA part number is 6601857, the cost is $33.39. Here is a link to the NAPA page with the delete pulley.
http://www.napaprolink.com/Detail.as...857_0146322294
I have the TPIS Air Pump Delete and the NAPA AC Delete pulley and am using Serp Belt NAPA 25060858, 86.375" long. The belt allows the tensioner to fall right in the middle of the range marked.

8Valve
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Old Jan 24, 2011 | 07:48 PM
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Theres a co. called Doorman, they make all kinds of parts. They have a line of ac delete pulleys that bolt in where the compressor would go. They are at most of the chain stores.
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Old Jan 25, 2011 | 06:19 AM
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Would this work? (Bypass compressor and belt tensioner). Just need shorter belt and a way to adjust belt tension.

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Old Jan 25, 2011 | 01:26 PM
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Default A/c delete

Originally Posted by Lemme
Would this work? (Bypass compressor and belt tensioner). Just need shorter belt and a way to adjust belt tension.

The a/c in mt 85 looks the same as your 87 but the tensioner is under the a/c your is on top. Do you think that will make a difference for my 85 a/c delete if I use your napa numbers?
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Old Jan 25, 2011 | 07:39 PM
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Originally Posted by pmhc
The a/c in mt 85 looks the same as your 87 but the tensioner is under the a/c your is on top. Do you think that will make a difference for my 85 a/c delete if I use your napa numbers?
The picture is of my 84 and I don't think I can use the A/C delete pulley from an 87 (as per 8 valve) due to the different arrangement of the belt tensioner.

However, the 85 appears to be the same as the 87 so you should be OK.

Last edited by Lemme; Jan 26, 2011 at 05:23 PM.
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Old Jan 26, 2011 | 10:25 AM
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Originally Posted by Lemme
Would this work? (Bypass compressor and belt tensioner). Just need shorter belt and a way to adjust belt tension.

You might be able to get away with that if you 'slot' the alternator bolt holes on the upper part of the bracket to allow for some adjustment.

As it is now, the bolt holes are fixed and don't allow any movement.
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Old Jan 26, 2011 | 10:53 AM
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Originally Posted by Lemme
I have ripped all the pipes, accumulator and condenser out and am left with the heavy and bulky compressor still in the belt train.

Can anyone point me to a place I can buy an A/C delete pulley / bracket for my 84?
Do you have any idea what the belt number is if you delete both the a/c and the air pump?
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Old Jan 26, 2011 | 03:13 PM
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Originally Posted by pmhc
The a/c in mt 85 looks the same as your 87 but the tensioner is under the a/c your is on top. Do you think that will make a difference for my 85 a/c delete if I use your napa numbers?
As long as your AC Compressor mounts the same as a 87, the delete pulley will work. Its no difference that the pulley on the compressor. The only thing I cant answer is if your compressor mounts the same as a 87.

8Valve
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Old Jan 26, 2011 | 03:14 PM
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Originally Posted by pmhc
Do you have any idea what the belt number is if you delete both the a/c and the air pump?
See my post #10 above. Thats the best infi I can give you, and its based on my 87. Wish I could help more

8Valve
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Old Jan 26, 2011 | 04:05 PM
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Just remove the 84 compressor and brackets related to it and install a 85-87 compressor bracket then use a a/c delete idler pulley .... end of problem.

here is one on the right side of the picture, much simpler setup then what the 84 had.


Last edited by jeffp1167; Jan 26, 2011 at 04:09 PM.
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Old Jan 26, 2011 | 05:28 PM
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Originally Posted by pmhc
Do you have any idea what the belt number is if you delete both the a/c and the air pump?
I think you need to measure it using a piece of string for instance with the belt tensioner mid range. Then look for a belt that is close.
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