[Abbey]

I'm changing out engines from an auto. to a manual and need to ask. The manual has what I think is called a dual mass fly wheel. I have heard of them but don't know anything about them. It looks OK but I need to know before I put this critter in if it has problems. Should I put just an ordinary fly wheel in. Or what? If I remember right there was something about balance. Please enlighten me about these.

 

[chuckster57]

Your changing engines or transmissions? If your changing engines then just transfer the flywheel from the old engine to the new one.

A dual mass flywheel is two seperate parts that are connected to each other using some strong springs. If the springs are intact then it is most likely good to go.

 

[NH2112]

There's a test procedure you can do if you have the right tools. It involves securing the outer portion to a sturdy bench, and devising a way to turn the hub portion with a 3/4" drive torque wrench. No movement between the flywheel sections should take place until a minimum of 425 lb-ft has been applied.

If the donor engine still runs now, simply listen for noises coming from the flywheel. If you hear any it's junk.

 

[Abbey]

The truck that I'm rebuilding from the ground up is a 89 four wheel drive with the stick in it the motor had a blown head gasket and a cracked block .The donar is out of an auto. and had a broken fly wheel. I have it ready to put in and wanted to know if that type of fly wheel had any known problems because I have never seen one before. The fly wheel and clutch looks good or I would of already changed it. Thanks for any information.

 

[Jrad235]

Automatics come with a flexplate. Remove the flywheel and clutch from your original motor and install them on the "new" one in place of the flexplate.

 

[drinkypoo]

Automatics come with a flexplate. Remove the flywheel and clutch from your original motor and install them on the "new" one in place of the flexplate.

E40D has a flywheel and a flex plate, check your manual. Normally you'll never see them apart though

 

[Abbey]

I'm going to put the engine in tomorrow.What I would really like to know is what is the idea of this type of fly wheel? What does it do?

 

[chuckster57]

Since it sounds like your staying with the manual transmission, here is a link that explains the dual mass flywheel:

Servicing Solutions: In the Clutch...Servicing Dual-Mass Flywheels

 

[Abbey]

Thanks that is what I needed. I now know if I have any trouble with it I will just replace the whole thing.