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by **barebonesracecars** » Thu Jul 24, 2014 7:09 pm

Can someone tell me the correct torque value for the crank damper ("harmonic balancer")?

Also, need to know the correct procedure to remove the damper...there is a cover over it, underneath the crank bolt. Hard to see, but appears there are threaded bosses back in there to use a standard 3-bolt puller.

Is this correct?

Thanks guys.

Reid

by **cosvega76** » Fri Jul 25, 2014 7:29 am

Reid,

What year 3800?

Chuck

by **barebonesracecars** » Fri Jul 25, 2014 8:59 am

1999, supercharged

by **cosvega76** » Fri Jul 25, 2014 8:57 pm

Reid,

Balancer torque is 100 lb-ft + 76 degrees (torque to yield).

Mitchell doesn't show me a removal procedure. If there are threaded holes to mount the pulley, I would use a regular harmonic balancer puller.

Chuck

by **barebonesracecars** » Fri Jul 25, 2014 10:49 pm

Thank you. Yes, there are threaded holes...they are hard to see because they are back inside, but I figured they had to be there. (6mm)

Finished the job today.

by **79440bird** » Sat Jul 26, 2014 7:45 am

Do u have the 3800 motor in a h body skyhawk??? I have a Series I I supercharged in a 80 sunbird hatchback, currently not finished but more than halfway there.

by **barebonesracecars** » Sat Jul 26, 2014 12:36 pm

No, sorry. Replacing a blown 3800 supercharged engine in a 1999 Bonneville.

First experience with a 3800 and had no shop manual. My Skyhawk originally had a 3.8. I didn't realize how much they had updated those engines.

Got a good spare supercharger if anyone needs one.

by **vegastre** » Sun Jul 27, 2014 6:27 pm

Finished the job today.

Sorry,
I just read this thread today. Ya, it takes three special length and size bolts as you found out =) I reused the dampener bolt and torqued to 150lbs.

by **vegastre** » Sun Jul 27, 2014 6:37 pm

I have a Series I I supercharged in a 80 sunbird hatchback, currently not finished but more than halfway there.

Hmmm...
I am putting a Series II Supercharged motor in my 75 Astre. Link to my project journal.

viewtopic.php?f=20&t=39854

Definitely like to see any pictures you have of the install. Especially the TB location?

Ya, the 38800 motor is basically a completely different engine from the 3.8. Nothing interchanges and I have had to fab up a lot of stuff to get it to fit the H-body platform.

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