Club 80-90 Forums

A friend of mine has a surplus recently rebuilt 2.1 DJ engine that I was planning on buying and fitting to my Syncro. My friend had it on the shelf as a spare, but he's sold his 2.1 van so it's no use to him anymore.

It was built by a friend of a friend - a guy who builds a lot of air cooled race engines (IIRC John in Stoke, if that means anything to anyone!) It's had new pistons and barrels etc, but I'm aware that a lot of the 2.1 piston kits are actually for an MV and not the spicy 10.5+ compression we'd hope for. 
Are there any identifying marks I could see with a borescope down a plughole to check before buying? The van isn't exactly fast to start with, and the engine in it is pretty much fine so I'm pretty wary of spending a couple of days swapping the engine only to lose 15/20bhp!


 

Thanks that's great. Looks like my best bet is going to be the depth of the valve cutouts vs the overall dish.

We use "MV" pistons on any DJ rebuilt in Israel since the 80s without any problem.

The engines, although losing 10% in power and torque became much more reliable in the long term.

For the long run, I would not hesitate to install such engine.