1600ct to 1641

[umgum]

has anyone done this what parts do i need
also has it made any differnece to how the van runs,speed or mpg

[dugcati]

By rights to goto 1641 I think you only need barrels and pistons and then a half turn on the mixture screw for the carb... if your up for it try taking it to 1776 - you will need to get the engine cases machines anlong with the heads though

[Team28crew]

I did this with my bug there was a small differance but the really change in performance came when I added the twin carbs, just be certain the bottom end is ok before splashing out an Barrels and Pistons.

[highlander]

a perfectly tuned and balanced standard 1600 will run just as good and economical as a 1641 with standard carb.. you need to look at a package to get a good increase in power and economy... 1641 barrels and pistons and a nice pair of 36 or 40 dellorto drla's and a full flow system should do the trick...

[reluctantartist]

Hi all. Being from the USA, I do not see the 1600's...so my question. What is the fuel economy and how do they drive?

[A KIRK]

I get between 20 - 25 mpg from my 1641, and the only way to describe how they drive is hm slowly.

[reluctantartist]

I take that is 20-24 using imperial gallons. That isn't much different than the 2L. I thought it might be slightly better

Thanks

[mrhutch]

most cost effective way of increasing MPG and performance is to stick a pair of dellotos on and take to a rolling road... or stick a 2litre AC in it!

[dugcati]

getting it LPG'd would make it cheaper to run

[Gunslinger]

I replaced my 2.0 for a 2.4 air cooled and get 25+ to a gallon. I figure its mainly due to the engine not working so hard especially up steep gradients

[mrhutch]

2.4 Aircooled.. more details please!

[Gunslinger]

Its a standard 2.0 bottom end with bigger barrels and piston, a fast cam and adjustable tappets rather than hydraulic.
Top end is slightly better, acceleration is much better and generally more torquey. I dont have to down shift going uphill anymore

[reluctantartist]

Did you do this work yourself or is there a performance shop over there doing this? I didn't think the Air-cooled could handle being much bigger than 2L.

[Gunslinger]

Did you do this work yourself or is there a performance shop over there doing this? I didn't think the Air-cooled could handle being much bigger than 2L.

It was done by a company in Erith, Kent called The Engine Shop

[Vanagonman]

I take that is 20-24 using imperial gallons. That isn't much different than the 2L. I thought it might be slightly better

Thanks

That's because we're running carbs and perhaps your 2 liter type 4 is running fool injection?

Over here in Europe almost all 2.0 Type 4s are dual carbed from the factory.