StoogeMoe

Anybody have any 100mm NA pistons from tolerance group 2? I would be able to trade a set of tolerance group 1 pistons for them.
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1986 944 NA - Guards Red - 87k miles
1983 944 NA - Platinum metallic - awaiting new engine
1985.1 944 NA - Guards Red - donor car
1984 911 Carrera Coupe - Guards Red (gone, but not forgotten)
"If you're not living on the edge, you're not living"

badcoupe

all of mine are number 1 sorry! try todd down in TN he has alot of spares

eman930

I have a set of 4 pistons from a 87 924S with rods but sadly they are number 1

StoogeMoe

Who's Todd?

Zero10

99% of those out there are tolerance group 1.
That is the size the factory was aiming for. Tolerance group 0 and 2 pistons are for when they made mistakes (too big/small).
That is what I was told by the local stealership.
I as well was on the hunt for a set of group 2 pistons, and eventually gave up.

hosrom_951

I have these (look at the engine code & part numbers on top):




If you are serious, give me till tomorrow to see if they are in stock, i believe these are group 2 pistons according to the manual.

spedracer18

tod84944, he is a DIY parts recycler in Tennesse. He has lots of parts and charges fair market value. Also 944Ecology may have your pistons, but it looks like Hosrom has a lead on tolerence 2 pistons.

StoogeMoe

I'm going to try to use my block with tolerance group 1 bores. The problem is that it has scored cylinders. If I can't use that, I'll be going to plan B and use a block I have with tolerance group 2 bores.

I'm having my block checked out, so I should know shortly.

Hosrom, do you know what those 2 pistons go for? And aren't you a bit far away?

hosrom_951

Stooge: Pistons go for $660 + shipping, last time i checked for shipping for a rennlister, it was $35 and takes 10 days, or ~$55 for 3-5 days.

Thing is, i called my supplier, and no answer, so i cannot confirm anything untill i actually see him, wuch should be this saturday.

Note: These are brand new, come with rings, pins and pin clips.

nine-44

That "M44-40" should mean that they are for a 2.5L 16V 944S.

The part# shows in PET for an 87 944S 2.5L 16V

Yes they will be for an NA, 100mm and appear to be tolerance 2 but I don't think they will work for an 8V.

hosrom_951

Andy,
Thanks for checking that out, don't want to be sending the wrong parts.

I also found these, but there are two part numbers, i believe these are for early models:

944 103 089 04
944 103 091 00

DanD

Hussam,
Do you have any Turbo pistons that will fit a #2 block? If so, I'll have a nice set of #2 NA pistons for StogeMoe.

Are the #2 blocks slightly bigger or smaller than the #1 or #0?
DanD

Zero10

^^^
#2 is the biggest.

hosrom_951

I have Turbo pistons, the box has the numbers 100.00 which indicates group 2. However, the pistons have the numbers 99.98, which are group 0 pistons.

I believe ALL the boxes are labeled in such manner: