2.1 Engine Rebuild Advice

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I am getting ready to build a new engine for my 84 westy. I have a 2.1 short block core (not going to rebuild my 1.9). Choices are:

1. If pistons / cylinders are in spec, use the ones with the engine and keep it stock 2.1

2. Obtain some DJ pistons from Germany (10.5:1 compression). I have read quite a few threads on TheSamba but have not come to a conclusion as to whether I would have an issue with 91 octane fuel or not and California gas. Does anyone have experience in this space?

3. Get some balanced 2.2 pistons from RJE and use those as the base of the build. My initial thought is that I would only go this route if the stock 2.1 pistons/cyl are not serviceable.

Additionally, my local shop is encouraging me to build the motor using the 1.9 cam as that will run better with the existing dijiget fuel injection system. The advice was that a 2.1 cam or some of the other aftermarket cams that people have been using do not run well with digijet. Any thoughts on this?

I have some new AMC heads that I am going to have RJE install some TRW valves in and I am going to have him rebuild the 2.1 rods as well.
I will post pics and any other comments on the build once I get it started and after I complete an engine swap that I am working on.
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1984 Vanagon Westfalia - Vanna
1971 VW Beetle

[shadetreemech]

Just bolted in a 2.1 long block with DJ pistons. Still assembling, no experience with it running, yet.

Did you see this in your search?

https://www.thesamba.com/vw/forum/viewtopic.php?t=229736

D Clymer and tencentlife express some informed opinions.

Dan
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'84 GL 1.9
'01 Volvo V70 T5
'88 Westy - "MZDRTHY"

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Thank you Dan. I did read that thread. There is someone else here in the bay area that is running a 2.4l with 10.5:1 and seemed to be having no issues.

I am interested to hear how your build turns out. What cam did you end up putting in the engine?
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1984 Vanagon Westfalia - Vanna
1971 VW Beetle