Hi has anyone had any experience with 652 piston and barrel conversions??

I rebuilt the engine for my car and fit 9:1's which are very good but i'm still wanting MORE

I've heard the 652 gets a lot hotter than normal, how much and is that a bad thing? Does the fan/cooling couling still fit all the same?

Will i need stronger crank shafts and have to uprate other parts or can you just swap them and go for it?

thanks
H

Yes. Don't.



It's purely an internal change, so yes. The problem is that the barrels are VERY thin walled afterwards. On the one we had in the 4x4, before we put a Visa engine in, a much bigger carb jet had been put in to keep it cool. It drank like, well, the owner.

Putting a Visa engine in whole is a much better solution. If you can find one.

I've got big drilled jet in my carb already so it's juicy any way

sorry, so how does more fuel help keep it cool?

Why don't?? reasons please

Because running lean gives hotter combustion than running rich.

understood

Does a visa engine bolt straight in?
I had thought about making a 4 pot sidewinder but was talked out of it, maybe a project on different car one day tho

Pretty much. You need to do a bit of work to the flywheel to use a 2cv starter (or use the Visa starter), and you need to do some wiring to use the Visa ignition.

http://www.cats-citroen.net/citroen_aty ... rsion.html

I assume you've read Cats pages;

http://www.cats-citroen.net/home.html

Can't link directly to it, but it's in the tuning section. I've no experience personally but I believe it a better idea to swap to the whole 652 engine.

Andy Morris was selling a set of 652 pistons and bored out 602 barrels, was going to buy them but didn't had a better offer before I'd heard back.

Nice one Adrian thats everything we need in't it, just gotta find an engine now anyone???

what about the visa gti how different is that?