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post #1 of 16 (permalink) Old 03-03-2012, 04:03 PM Thread Starter
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91 SC on 95

Today at the junk yard I found a complete 91 SC will the super charger on it fit on a 94 SC?
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post #2 of 16 (permalink) Old 03-03-2012, 04:08 PM
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Yes it will fit but why? Early M90s aren't as good as the 94/5 units

I think you'll need the inlet plenum too since the 89-93s have a oval opening and the 94/5s are square

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post #3 of 16 (permalink) Old 03-03-2012, 05:08 PM Thread Starter
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My unit appears to binding. I was planning to rebuild the nose and see if that helps. then I spotted this unit at the yard. I was hoping that it would be a bolt on.
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post #4 of 16 (permalink) Old 03-03-2012, 06:03 PM
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Yeah it will bolt on ( the rear plenum needs to match, so grab that also ), but I would rebuiild the 95 SC and put that back on the car when you are finished.
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post #5 of 16 (permalink) Old 03-04-2012, 05:56 PM Thread Starter
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I picked up the 91 blower and plenum today. There are some differences with the plumbing on the plenum. Hopefully I can make it work.
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post #6 of 16 (permalink) Old 03-04-2012, 06:48 PM
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I picked up the 91 blower and plenum today. There are some differences with the plumbing on the plenum. Hopefully I can make it work.
Is it missing the EGR ?
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post #7 of 16 (permalink) Old 03-06-2012, 08:28 PM Thread Starter
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Originally Posted by SCTbird1994 View Post
Is it missing the EGR ?
Several of the vacuum lines are in different locations I just have figure out how and where to reroute.

I will tell you one thing I am so over this car. I have been to five auto parts stores today looking for a super charger belt tension-er pulley with no luck. this just isn't worth the trouble to find parts for.
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post #8 of 16 (permalink) Old 03-06-2012, 10:10 PM
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Honestly if that little problem gets you "over the car".... sell it to someone with more patience imho.

Could the belt problem be because you are trying to use an older style SC unit on a newer type setup?
Are the pulleys all in the same place?
Couldn't you just find out how many inches in length the belt is supposed to be and buy one to match?

These are just some ideas to help you through your problem, we all run into them, sometimes you just need to take a step back and rethink it. Then the light bulb comes on, and you got the problem solved before you know it. Good luck.

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post #9 of 16 (permalink) Old 03-06-2012, 11:17 PM
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Thats because nobody carries the correct size tensioner pulleys for the SC, they are slightly smaller, but you can get by just fine with the replacement ones readily available at Autozone or any other parts stores, no problem.

The only trouble I ever have on mine is when the supercharger is really boosting the pulley will slap the AC bracket and digs grooves into the pulley, but it did that with the stock size anyways. Need to get some MP tensioner springs to make them stronger.

Yeah .. if you cant figure out a simple thing, just give up. Thats what I always say. LOL

Take it to another mechanic, ie. this one here

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post #10 of 16 (permalink) Old 03-06-2012, 11:22 PM
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RockAuto has damn near everything for these cars if you ever cant find parts... its usually way cheaper too.

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post #11 of 16 (permalink) Old 03-07-2012, 06:16 AM Thread Starter
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This is one of many little parts this car needs or needed that are not available or I have have had so make several trips to several parts stores to get. This is crazy for a car t hat is only 17 years old. Need an alternator three stores then had to order, need a water pump two stores and had to order. needed a power steering pump had to order. This pulley is just silly I spent and hour at Napa going through catalogs looking for one the same size nothing.

I haven't taken on the SC yet but it should use the same tension-er.
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post #12 of 16 (permalink) Old 03-07-2012, 01:07 PM
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17 years is pretty old. Most people drive cars from the 2000 and up, and even then a year 2000 car is still Old by the industry standards.

Parts for the SC .. the hard to find ones are the hard parts, like coolant tubes, etc ..

Alternator is different since it has 8 rib pulley they are not something stores normally stock, and the water pump is the same as a 95 3.8 Mustang - should be easy to find. Power steering pump should be readily available no problem it is a very common item used on many Ford vehicles. My local Autozone usually has these type of parts in stock or they can get them within 1 day.
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post #13 of 16 (permalink) Old 03-16-2012, 03:06 PM
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Also, the 89-93 blowers made less power than the 94/95 blower. The blower pulleys are different so that maybe your belt issue.

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post #14 of 16 (permalink) Old 03-16-2012, 07:22 PM
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Originally Posted by Sc4u2nv View Post
Also, the 89-93 blowers made less power than the 94/95 blower. The blower pulleys are different so that maybe your belt issue.
Its a 2.9-3% difference in size ... the belts are the same length for all years. I have an early model SC pulley on my 94 SC, no belt issues.
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post #15 of 16 (permalink) Old 03-23-2012, 03:30 PM
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Originally Posted by SCTbird1994 View Post
Its a 2.9-3% difference in size ... the belts are the same length for all years. I have an early model SC pulley on my 94 SC, no belt issues.
But if the tensioner is bad as well??????

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post #16 of 16 (permalink) Old 03-23-2012, 05:44 PM
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But if the tensioner is bad as well??????
Yeah I mentioned that in post #9 .. its the Springs inside the tensioner that get weak after time. You'll see the tensioner moving alot while running the engine if they are totally shot, they might bove a bit when you rev the engine, its normal but if they go really far they are probably weak. My SC rubs the pulley on the AC bracket sometimes under heavy boost, thats where the grooves come from if youve seen them on your pulley.
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