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Installing underdrive pulleys on a 05-09 mustang

Red

Well-Known Member
First of all make sure your car engine is cool so you can work on it.
1.On my car we first took off the cold air intake.

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Take off the power steering fluid, radiator reservoir, radiator cover and remove the fan.

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3.Remove belt and the water pump pulley.

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5. Remove the driver's side lower alternator bracket bolt and stud.

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6.Remove the harmonic balancer bolt and the crankshaft with a crankshaft puller.

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7. Line up the new crankshaft pulley and use the longer bolt to install the pulley. DO NOT TIGHTEN THE BOLT ALL THE WAY. Remove this bolt and use the factory bolt to tighten the rest of the way.

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8.Install the new bolt for the alternator supplied with the pulleys.

9.Install the new water pump pulley.

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10. Put the belt back on.

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11. Install your fan, radiator cover, cold air intake, power steering fluid and radiator reservoir back on.

12. Start your car and check that the belt is running correctly. Shut the car off and inspect the belt to make sure that it is aligned and tracking right.
 

Red

Well-Known Member
I don't think I'll ever be able to get a supercharger. After my custom tune. I'm thinking thats it ..........we'll see
 

Red

Well-Known Member
I did forget to thank Emilio,PappaTom, and Danny for helping getting done.
Thanks guys for all your help. I learned a little more about my stang today.
 

sdsubzero4

Spring Valley, CA
Damn you, Red! Now I know which upgrade to get to one up you. Supercharger. Hahahahahahaaaa!

J/K. Nice install and write up.
 
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