Can anyone recomend a book or website that can give me the sizes and tolerances for a 30 hp engine.

I particularly need to know the following:
Crank - Main bearing, big end bearing.
Case - thrust width on case, end float or clearance for crank.
Connecting rods - small end bearing inner and outer diameter. (how much of a transition fit should there be).
Piston wrist pin (gudgeon pin) diameter - wear limit.
Ring gaps and maximum bore diameters.
Oil pump clearance between rotors and against the outer cover.
Torque Lbs for 6 large bolts on case, outer bolts and cylinder heads.

Thanks.

Phill Thomas

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HI,

Over here in the USA the Bentley manual is the bible of VW repairs. I know you have it over there also.
Most of the dimensions you desire will be in the book, It is interesting that VW never published main bearing to Journal clearances.
What they did was describe what is basically a "feel" test about the amount of resistance it takes to rotate the crank after reassembly.

If you are rebuilding the engine, the Bentley will be a great resource for that as well as virtually any other repair you make on the car.

What year are you working on?

The Bentley manual varies in cost here depending upon the year spread it covers. They average about $100 US, expensive but worth every penny.
You are spending a lot of money to rebuild the engine, an additional $100 is money very well invested to make sure it comes out properly and runs for many thousands of miles.

I will stress that you reinstall every piece of tin you took off, especially under the cylinders on each side is a small insignificant looking piece that is critically important to proper cooling and hard to put on later if you should forget it.

As an additional reference
www.thesamba.com
is a great forum, information and product source. While based in the US it has members from around the English Speaking World. (and some that don't speak such good English)

Dave

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Thanks Dave - The Bentley Manual's sound ideal. I have a VW workshop manual for my 64 type 2 and that has every detail with clear images. I certainly will be making sure every part is replaced as per original specification and have to say that the images and articles on The Samba.com have been a great help - there are very knowledgeable people on there, but I have'nt asked any questions myself yet.

Hope we bump into each other one day Dave.

Phill Thomas.

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