Date:         Fri, 20 Apr 2001 22:50:11 -0600
Reply-To:     Steve Blackham <steph@USWEST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Steve Blackham <steph@USWEST.NET>
Subject:      Deck Height/CR
Comments: To: type2@type2.com
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

All right you expert mechanics, check my math.  I'm getting ready to
put the barrels and heads on my 82/83? vanagaon aircooled engine
rebuild project.  I decided to go with new AMC (no flames please, OEM
VW are not available for this engine to my knowledge) heads, and
Mahle (Brazilian) barrels.

Here's the math:

Deck height (w/ no gaskets or shims) = .025"
chamber CC  =  56 cc
Piston Dish  =  15 cc

Swept =  94mm x 71mm  (1970 displacement)

My gasket set came  with neither paper or metal bottom barrel gaskets
(interestingly it came with 8-.029" barrel to head gaskets which I
don't plan to use).

The AMC heads have a built in ridge at the contact point of the barrel.

Which way would you build these?:

7.53:1 CR with no gaskets

or

7.41:1 CR with .008-.010" metal barrel gaskets I have in inventory.

This Van probably will never go below 4200 Ft altitude and the fuel
mixture will be set towards the rich side  (1.5% to 2.0% CO).

What do you think?

--
Steve Blackham
Centerville, Utah

77 transporter converted to camper (Westy top)
83 Vanagon  (New and current project)
87 Weekender