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| flyboy | mod. to the l98 A.I.R. pulley | ||
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Elite Guru
 
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I got tired of being asked "what is that for" when someone pointed to the "erector set" like contraption that is the A.I.R. pump delete pulley system. I modified mine by downsizing the pulley and moving it to the upper spacer. This required making a new alternator brace, shorten and step the spacer, saw one bracket in half and enlarge the hole to 3/4". Purchases include a 3/8x6" bolt, a shorter belt and a smaller, 2-1/4" pulley(dayco #89095). I had a 1/2"x1-1/2" alum. push bar from a door for the alt. bracket. I am pleased with the result. Here are a tool list and some pics. in case someone's interested in doing it. Joe
ruler scribe hacksaw various files drill sandpaper Attach file:  TPIS AIR delete.jpg (28.20 KB) my design.JPG (128.89 KB) TPIS installed.jpg (49.85 KB) view 1.JPG (112.13 KB) view 2.JPG (110.24 KB) pieces.JPG (136.81 KB) ready for hacksaw.JPG (124.53 KB) filing .75 hole.JPG (121.93 KB) hacksawed.JPG (138.01 KB) mods to spacer.JPG (137.41 KB) spacer complete.JPG (142.29 KB) more filing.JPG (135.83 KB) that billet look.JPG (125.29 KB) |
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Posted on: 2010/2/8 17:24
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| CentralCoaster | Re: mod. to the l98 A.I.R. pulley | ||
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Senior Guru
 
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Wow! I love seeing a nice final result out of basic tools that everyone has. Without the other pics I would have assumed you used a CNC.
The pulley sticking out in the before pics does look tacky, I have a pulley and have looked at tucking it down in there but haven't followed through with a bracket. How does the pulley bearing work on that, does the bolt capture the inner race? Looks like that spacer has a collar that goes inside the pulley. |
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Posted on: 2010/2/8 17:40
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1985 Z51, ZF6 |
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| BillH | Re: mod. to the l98 A.I.R. pulley | ||
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The Stig Moderator
 
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Excellent work. Looks well engineered too.
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Posted on: 2010/2/8 17:47
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Every man dies but not every man lives. |
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| flyboy | Re: mod. to the l98 A.I.R. pulley | ||
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Elite Guru
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Quote:
Thanks. Yes and yes, the operation is the same as the tpis unit, just looks better. It's actually more rigid. |
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Posted on: 2010/2/8 17:57
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| Aardwolf | Re: mod. to the l98 A.I.R. pulley | ||
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Senior Guru
 
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I'm surprised you didn't make a bracket to move the alternator up instead, thus doing away with all air pump mess. That is really well made, good work!
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Posted on: 2010/2/8 18:26
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| flyboy | Re: mod. to the l98 A.I.R. pulley | ||
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Elite Guru
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The alt. location kind of balances out with the a/c comp. on the other side, no? Also tied to the p.s. pump bracket, and exhaust man. Hood clearance? No, really don't want to mess w/that.
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Posted on: 2010/2/8 18:43
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'91coupe, LT4Hotcam, some other stuff. If it's too loud, you're too old. "He works on old cars, then junks 'em" |
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| bogus | Re: mod. to the l98 A.I.R. pulley | ||
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Grand Imperial Pooh-Bah
 
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That is IMPRESSIVE!!! Looks factory! Way to go!
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Posted on: 2010/2/8 19:25
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Matatk | Re: mod. to the l98 A.I.R. pulley | ||
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Webmaster
 
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That's a very nice bracket. I think you should write up some nice instructions and post it in the tech library
 Matthew |
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Posted on: 2010/2/9 2:26
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| Ultraman | Re: mod. to the l98 A.I.R. pulley | ||
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2015 Memorial Day Car Show Winner!
 
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Wow! You could like sell those to people......like me! Nice work.
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Posted on: 2010/2/9 4:34
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2010 Grand Sport Coupe Gone but not forgotten... Vote DeSantis in 2024.... Make the IRS go away... |
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| Trae1976 | Re: mod. to the l98 A.I.R. pulley | ||
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2012 Memorial Day Car Show Winner!
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Outstanding work flyboy!
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Posted on: 2010/2/9 13:16
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| shakedown067 | Re: mod. to the l98 A.I.R. pulley | ||
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Senior Guru
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Very sharp!
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Posted on: 2010/2/9 17:15
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| patgizz | Re: mod. to the l98 A.I.R. pulley | ||
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Senior Guru
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heh erector set look - i hate that about the readily available AIR delete parts. "hey bill lets stack a bunch of $hit up and call it done and charge $120"
looks very nice. i have one i have never seen before on my car, machined out of one piece of aluminum and nicely curved instead of all rectangle and spacer. |
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Posted on: 2010/2/9 20:49
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| Gearheadotaku | Re: mod. to the l98 A.I.R. pulley | ||
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Guru
 
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looks good!
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Posted on: 2010/2/12 0:15
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In the servitude of my fiberglass Mistress |
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