Machine for Olympic type exercises?

[Guest guest]

I have recently started an exercise program for increased strength that

calls for periodic Olympic type lifts (i.e. clean and jerk, etc.) My

gym has no free weights (barbells) but has a good machine as well

as a good selection of dumbbells. Are there any negative issues in

using the machine for Olympic style lifting? If so, can such

lifts be performed with dumbbells instead?

Thanks

Tony saiz

Miami, Florida