Clearancing for 76mm or 78mm stroke?

913 posts · joined Feb 2003 · 7 Jan 2006, 6:51 pm

#444999

My kombi camper's 2L needs a rebuild so I'm considering stroking it for more torque. What is involved for clearancing for a 76mm stroke, and is there much more work needed for a 78mm stroke?

(I'm thinking about keeping the bore at the stock 94mm because I've heard that thinner walls won't cope with a very heavy bus)

1959 red & white Beetle
1975 Kombi camper

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 7 Jan 2006, 7:30 pm

#445015

most rebuilds of type 4's involves bigger pistons and not stroking.

Unless you are going 2.7L i dont belive it is required.

V Forces favourite "ecomony" type 4 is a 2.3 L with 103's and a 66mm crank.
Richard likes the 2:1 rod ratio of the 66 crank.

They did one for a camper a while back and i will ba amazed if you would want more torque than that delivered.

Phil Matthews built one of these as well
http://www.clubvw.org.au/phil_matthews_kombi.htm

He doesnt post here much now though.

Give Richard a call as well or u2u Alex Holzl and have a chat with them

Futue te ipsum!!!

66deluxe Custom Title Time!

1,593 posts · joined Aug 2005 · 7 Jan 2006, 7:33 pm

#445017

Yeah keep a bus engine at 94mm bore and use a 76mm stroke crank, bus engines don't like anything over 94, apparently a 78mm stoke by 94mm bore can be hard to build as .300" base shims are needed for correct deck height to be achieved. I am building a 78mm stroke by 96mm bore type 4 engine for my bug, 96's can be used here as there is less weight to push than a bus and less stress on 96mm cylinder walls. As for clearnacing of the case i don't know as yet as I am still waiting for my rods and cam before starting to clearance case. The crank i got is from Jake Raby in the states it was $480 US and got to my door for about $850 AUS within two weeks of ordering. Ring Either V-force or Wayne penrose they can help more than I can very cool guys too talk too also. Hope my little bit of knowledge helps out mate, Cheers Damien.

This is my Volkswagen, there are many like it, but this one is mine. Without me my Volkswagen is useless, without my Volkswagen, I am useless.

61 Karmann Ghia 2110cc type1 w Los Panchito's
66 Deluxe Beetle 2270 type 4
10 Subaru WRX Impreza