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> Engine building, Looking for suggestions...
Hine62
post Aug 24 2014, 06:13 PM
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I've read "a lot" about the type 4, but still have some questions. My father worked on these engines when they where new, so he's teaching me how. I'm looking to build an type 4 engine with these parameters:

1.8l case
96mm cylinders
78mm crank

Some questions:
1. If the stroke of the crank is increased, how does this affect the cylinders?

Are the cylinders shimmed to the new stroke?
Does someone make "78mm" cylinders"?
Are the pistons/rods shorter/longer to make up the difference?

2. Should I look for a 2.0l case? From what I've read the cylinders fit in the 1.8L case. Are there any other benefits to the 2.0L case?

3. If I decide on 103mm cylinders, where should I send the case? (It will need to be machined for the crank anyway. Unless I decide to take a grinder to it (IMG:style_emoticons/default/biggrin.gif) )

4. There are a lot of 'kits' to buy. Should I go with a kit or buy the parts separately? One advantage is kits come with gaskets, etc...

I have more questions, but this will get me started. Thanks
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malcolm2
post Aug 25 2014, 07:43 AM
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66mm and 71mm were the stock cranks. 93mm was the stock piston diameter. plug them into the calculator link. 71mm crank with the 96mm pistons gets you a 2056 cc displacement.

From what I have read, folks like to use a 1.7 Liter case. I think they were a bit beefier. I believe any upgrade to a 1.7 case will require some clearancing to allow the rods to clear. The bigger crank has smaller journals to help account for some of the distance difference.

Then you need to consider your heads and valve openings and push rod lengths. I'm sure your Dad told you about the Carb cam or Fuel Injected cam.

Have Fun, take your time. I tried to buy high quality parts for my engine and just get it driveable. I did not worry too much about how the car looked. That's when the real fun begins. (IMG:style_emoticons/default/driving.gif)

I bought all my internals from TYPE4STORE.com. My stuff did not come with gaskets. A gasket kit will be around $50, sold by engine size.
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