Dynamic Product Title based on metafields

[TWBF]

I am trying to make our product page titles include various product object and metafield data. 
For example - I have a product.metafield.myfield.length that is for product length, and another for weight. I also have one model number.

I'd like the product title for all products within a certain collection to be completely generated from the product objects and/or metafields. 

For example:
{{ product.vendor }} {{ product.metafield.myfield.model }} - {{ product.metafield.myfield.length }}{{ product.metafield.myfield.weight }}

However the input field for products does not accept liquid. What would be the easiest way to accomplish this? I'd also like it to only apply to certain collections.
Also we do not want to use variants to accomplish this. Just changing the title on a all products within a collection, all without variants.

We have had a great deal of issues with search functionality, and the Shopify POS when dealing with variants. 

Any help is greatly appreciated.