Quote:
Gaston, you should put this in the how-to article section since we have had a lot og people ask about this swap!
OK, this is my second try at this, I had it all typed out and accidently somehow deleted it before it got posted, ARGHHHHHHH!
Oh well here goes.
So you want to install a roots blower from the thunderbuird Supercoupe on your mustang eh? Will it work? What all is needed? How hard is it? How well will my mustang block hold up? Read on.........
First of all WILL IT WORK?
YES but its not easy
Second what all is needed?
LOTS! Basically its easier and cheaper to buy the entire SC motor, but if you want to install it on your mustang block here is what you need.
Check -Roots blower (DUH )
Check -SC blower top
Check -SC rear blower intake with SC TB
Check -PS pump pulley (you can us your mustang pump)
Check -if using the mustang block/crank then use you stock mustang dampener
Check -if using the mustang block/crank then use the mustang flywheel/flexplate
Check -Mustang or SC starter will be fine, they are the same
Check -Mustang headers
Check -SC heads are better but Mustang heads would probably be fine (SC heads are supposedly a little stronger)
Check -MUSTANG EEC
Check -MUSTANG wiring harness
Check -wire to lengthen wiring harness connectors
Check -MUSTANG timing chain cover or 94-95 SC timing chain cover
Check -MUSTANG crank sensor
Check -MUSTANG or SC alt will work, MUSATNG better sicne it has the extra connect on it, but will work without it for the SC alt, need to change pulleys if using the Mustang Alt. I believe the Mustang alt is more powerful as well, not exactly sure.
Check -Mustang motor mounts
Check -Mustang DIS module, don't need the SC one.
Check -Mustng rad will work, but if using the SC IC then might be easier to us ethe SC rad its a little smaller though but works for the SC guys fine.
Check -SC coil pack bracket (mustang coil pack should work but I have the SC coil pack as well)
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supercoupeperformance.com -SC crank pulley
supercoupeperformance.com -SC water pump and pulley
supercoupeperformance.com used or new- SC injectors or eqivilent plus matching MAF -89-93 SC came with 30# injectors and
55mm MAF (1991 blower)
supercoupeperformance.com used -SC tensioner pulleys (all 3)
supercoupeperformance.com used -SC valve covers
supercoupeperformance.com used -Upper and Lower IC tubes
supercoupeperformance.com used -SC lower intake
supercoupeperformance.com used -Alternator pulley
Ebay -SC intercooler should work, not sure how well the SC intercooler tubes will clear but they should
or use a custom IC setup
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-Rear intake (from IC to lower intake)
-custom air inlet needed
-Major tuning
-SC jackshaft pulley bracket
-all cooling hoses
-extra cooling hoses for custom work
-SC oil cooler (not needed but good to have)
-SC PS pump bracket
-SC thermostat housing
-SC thorttle cable
-SC throttle cable bracket
-SC AC compressor
-custom AC lines
Now, how hard it is?
Well that all depends, if you have the complete motor it will be a lot easier, basically just drop the motor in and customise the wiring and hoses and a few other things. Finding all the needed parts is the hard part, where as a complete motor has everything you need.
A lot of custom work is needed to get everything hooked up, I had to make custon cooling hoses where the heater core is, I had to cut the throttel cable bracket to clear the hoses so I could not use the cruise control cable, so no cruise. The EGR needed to be deleted sicne there is very little room where it hooks up, the engien is very close to the firewall, I may try and get it to work with customising the EGR just for emissions, not sure yet. You will also need a very good tune to make this setup work, trust me, I have been there. You will need to make a custom air inlet from the airfilter to the TB, thats not too hard, also if using a custom IC setup, then thats all got to be made as well, piping, brackets IC etc. The SC motor has 2 extra sensors they are the knock sensor and oil level sensor, we can live without these, and besides our mustang harness will not plug into them so we can't sue them anyways, all other sensors will work, just need to lengthen wires to reach them. With my custom IC setup I had to moive my battery to the trunk as well, but if you use the stock SC IC then you'll be fine.
How will my mustang block hold up?
Well the SC came with a stronger crank, pistons and rods to handle the extra power. The SC block is also stronger. The mustang block has proven itself to be fairly strong as well, no one has broken one yet at least. No one really knows for sure how long the mustang pistons and rods and crank will hold up to the roots setup, I have been told that the rings would be the first to go, the mustang has a higher compression ratio, but something about the location of the ringlands or something is better ont he SC pistons, don't wuote me on that, its hearsay right now. Stock SC compression is 8.5:1, I am running 9:1 with forged pistons in my setup. I have heard about guys even running above 10:1 with the roots blower but I don't think they push their motors too hard either, more for show.
I have also heard of guys runing 4.2 SC motors, with no problems, except for one guy who keeps busting cranks, SC cranks at that, I think his problem lies elsewhere though.
