Any site where they sell under drive pulleys for a 1990 Grand Marquis?
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https://www.autospecialties.com/ford.html
It's the crank pulley only. Here's a thread with some actual user experience: http://www.grandmarq.net/vb/showthre...T-HAVE-for-HOs1990 Country Squire - weekend cruiser, next project
1988 Crown Vic LTD Wagon - waiting in the wings
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It doesn't do awesome things for AC performance in traffic. Yesterday driving around it was 85 outside, I had 36 degrees at the vents while driving. Stopped that got up to 58 degrees.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
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Its much more useful with an HO engine that will spin some rpm. On the stock engine it won't do much for you.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
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If I can lay my hands on a stock set of pullies and belts, I may do a back to back comparison of AC performance. I don't know how much is the compressor spinning less, and how much is the fan. If its mostly fan, thats easy to fix with an electric aux fan. Its also possible I'm just dealing with the usual R134a sucking in traffic symptoms that would be fixed with a better condenser. I get a solid 40-45 degree drop while driving, but its closer to a 20 degree drop when stopped.
It would also be worth actually determining what the pulley ratios are. I don't honestly know. That would tell me exactly how much slower the compressor is running. Absolute worst case, I could make myself an underdrive that is larger than the ASP one but smaller than the stock one, or make a custom one that makes the AC run close to stock speed while underdriving the other. It would be time consuming but not impossible. If I do it, I'm not making a second one though so you people are on your own
The problem with it is not just noise. At high RPM it spins that water pump so fast that it makes enough pressure in the cooling system to blow the heater core. With a stock motor that shifts at 4200 rpm, its a lot less of a concern but if you add another 1000 to that you've got problems. Restrictors in the line will help but may not entirely fix it. You also risk damaging the other accessories that were never intended to run at screaming speeds.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
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Supply and demand. One place makes it, and how few people actually own one? Wouldn't half surprise me if they either make them to order or do maybe 10 at a shot when they need to. If you had the CNC program it wouldn't be a hard part to knock out a short run of. Its a single application thing too, the one for your 98 probably also works on Mustangs and other vehicles with the 4.6.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
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Originally posted by gadget73 View Post
The problem with it is not just noise. At high RPM it spins that water pump so fast that it makes enough pressure in the cooling system to blow the heater core. With a stock motor that shifts at 4200 rpm, its a lot less of a concern but if you add another 1000 to that you've got problems. Restrictors in the line will help but may not entirely fix it. You also risk damaging the other accessories that were never intended to run at screaming speeds.~David~
My 1987 Crown Victoria Coupe: The Brown Blob
My 2004 Mercedes Benz E320:The Benz
Originally posted by ootdega
My life is a long series of "nevermind" and "I guess not."
Originally posted by DerekTheGreat
But, that's just coming from me, this site's biggest pessimist. Best of luck
Originally posted by gadget73
my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.
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no, it spins the water pump and AC compressor slower. THe stock pulley makes the water pump spin like mad, especially at high rpm.
Somewhere along the way I changed my AC belt to a shorter one. If you need it I'll get the numbers for you. The one I was using initially was a bit too long and after some time it stretched enough that the sides would hit, and it started jumping off the AC compressor.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
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Ill listen to anything info you may give. Last I read youoriginally went with: underdrive pully belts 48 1/2" (5060485) on the alternator side, and a 53 3/4" (5060538) on the AC side
prefer 49-49 1/2" on ac side
I think this was what you wrote ages back.
I think I will pick one up now.....
I have an aftermarket tensioner that may mess with belt size comparisons....~David~
My 1987 Crown Victoria Coupe: The Brown Blob
My 2004 Mercedes Benz E320:The Benz
Originally posted by ootdega
My life is a long series of "nevermind" and "I guess not."
Originally posted by DerekTheGreat
But, that's just coming from me, this site's biggest pessimist. Best of luck
Originally posted by gadget73
my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.
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Original:
New one:
To be honest though there is quite a but of throw on the tensioner available so it may be a non issue.Last edited by 87gtVIC; 06-22-2017, 07:40 PM.~David~
My 1987 Crown Victoria Coupe: The Brown Blob
My 2004 Mercedes Benz E320:The Benz
Originally posted by ootdega
My life is a long series of "nevermind" and "I guess not."
Originally posted by DerekTheGreat
But, that's just coming from me, this site's biggest pessimist. Best of luck
Originally posted by gadget73
my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.
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