"TYPE" engines

[Darick]

There are different model VW engines, like type 3, type 4 etc. ?? What is the AeroVee?
Darick

[Rynoth]

I believe that the VW Types actually refer to the vehicles, not the engine specifically. I.e. http://en.wikipedia.org/wiki/Volkswagen_Type_4

None of those VW Types had a 2180cc engine like the Aerovee.

[Bryan Cotton]

I believe all the popular aeroconversions are type 1. The name goes with the engine as well as the car. The displacement is not stock.

[fastj22]

The type referred to both the engine and the vehicle.
http://en.wikipedia.org/wiki/Volkswagen ... led_engine

Factory Type 1 was 1300CC to 1600CC. Type 4 from 1700CC to 2000CC. Different cases and components. Type 1s where used in Beetles and Karmann Ghias. Type 4s where used in the heavier square backs and buses.
The Aerovee is based on the type 1 case with bigger jugs to bring it up to 2180CC. Some builders/hotrodders will put in a different crank (stroker) to increase the displacement up to 2400CC, but this also increases compression ratio. Not something we generally want in an aircraft engine.

I have a 72 Karmann Ghia with a 1776CC. I went that way because it slightly increases the displacement but doesn't have any tuning issues the strokers have. Just a very dependable, easy to maintain engine with stock carburation.

[SvingenB]

When I was a little boy, my father had a VW 411E. Type 4 VW engine with electronic injection. My grandfather had a Beetle with a type 1 :D

[Rynoth]

Once again, experience trumps "I read it on the internet so it must be true! "

[vigilant104]

The Aerovee is based on the type 1 case with bigger jugs to bring it up to 2180CC. Some builders/hotrodders will put in a different crank (stroker) to increase the displacement up to 2400CC, but this also increases compression ratio. Not something we generally want in an aircraft engine.

Just a clarification:
The Aerovee (and other 2180 CC Type 1) is stroked, too (that's why the case has to be modified a bit inside for "clearancing"). As far as I know, the largest from-the-VW-factory stock Type 1 stroke is 69mm, and the largest "normal" Type 1 engine "build up" that retains that stroke would be a 1915cc engine (with a 94mm bore). The Aerovee and other 2180cc engines have a 82mm stroke and a 92mm bore. The 2300cc engines have the same stroke as the 2180cc Aerovee, but have the larger 94mm bore jugs.

Any of these engines can be found with various compression ratios depending on shims that are used.

Type 4 engines: On paper they have several favorable attributes, but suitable cases and parts are relatively hard to find and expensive. The Type 1s do most things very well if their limits are respected, and the parts can be had at reasonable prices.

Mark W.