I have a Toyota 4age 1.6 16v engine currently on delloroto 45's I have been thinking about replacing them with 40's as my old ones are going to coat to much money to refurb.

Would I actually notice any difference with 40's on instead? Webbers or stick to delloroto ?

Any help or advice welcome please?

What size chokes are currently fitted? if they are 36 or less then you will be better using 40s. 36 is the biggest you can fit in 40s, with 45s you can go up to 40mm chokes.

I am not sure what is fitted now currently on my 45's but the chokes on the 40's I'm looking at have a 36mm choke

Bit the bullet and put bike carbs on it.

Hi its all about choke size but why are the 45,s going to cost so much to refurb shudn,t be that bad but 40 with right coke size will be fine mind 40,s off something else will need need re jetting anyway.
Cheers Ali