ATC 90 Engine Interchangeability

[wrecker200]

I need to find a replacement engine for my 1973 ATC 90. I have found an old ATC 90 on Craigslist I can pick up pretty cheap. The one on Craigslist appears to be a 1978 model. Are all the engines for the ATC 90 interchangeable from 1970 through 1978, or are there and differences?

[Joseph Farrow]

Should fit with out any problems.

[tri again]

Wish I knew but someone surely does.
Some are points fired and I saw a 110 with points...thought the later ones were all cdi.
You'll get an answer as soon as people get home from work or riding.

In the meantime, see if the search key works for you.
You may just get more info than you need in one click.

and welcome btw.
Best site for answers.`