Short skirt pistons?

[IronFreak]

I have an M20 block, and I was asked if these were short skirt pistons.....can anyone give me an idea so I don't have to pull the whole thing apart just to find out they aren't.

It's a 1988 325is m20b25


Thanks,

[Herr Faust Schinken]

i think up until 89 they were long skirt but I'm not 100% sure

[Liv3mind]

i think up until 89 they were long skirt but I'm not 100% sure

correct all late model m20b25's came with short skirt pistons

[IronFreak]

So my 88' is long skirt. I have late model body with metal bumpers....its a mystery

[MR 325]

correct all late model m20b25's came with short skirt pistons

People say that but I have still seen more than one late model engine with long skirt pistons.

I don't think their use was consistent.

[jlevie]

The weight improved pistons (short skirt) were introduced in 06/88. I suppose there may be some engines from slightly later that were assembled with left over stock.

[whodwho]

I think they list the 6/88 as a replacement date and not when they were used, from my research they appeared to be used on late models starting around 91

[jlevie]

I think they list the 6/88 as a replacement date and not when they were used, from my research they appeared to be used on late models starting around 91

Well, the engine that I pulled from the 07/88 car that is now my Spec E30 had the newer pistons in it.