Cory9584

How well do the alusil bores on a 951 hold up to water? Do they pit easily? I'm going to be looking at an engine that was flooded and seized. I'm thinking the rings rusted up and stuck in the bore. I think the bores should be fine being made of aluminum, and the pistons could possibly be blasted and reused with new rings. The engine was just rebuilt so everything should be in spec and I'd like to reuse as much as possible with the exception of rings and bearings. I'm just trying to get an idea what I'm up against. Thanks

Darwantae951

Why even bother? Seems like a good one to pass on if you have no history on it.

Cory9584

I know I'm going to get lectured on this, but I'm going to look at a car that looks absolutely mint with low miles and all kinds of performance parts that was in a flood. The car was cleaned up really well but it doesn't look like the water even made it to the dash which has me wondering how it's seized in the first place. I was just curious if the alusil cylinders are easily damaged by corrosion and could potentially be cleaned up by a shop without having to bore it again. I've seen iron blocks after a flood and it isn't pretty, but I've never had the chance to see a 944 block with water damage. I'll find out more about the situation probably by the weekend.

Darwantae951

While they are an aluminum silicon concoction...they are very easy to score. If any of the rings corroded, I can't imagine the bores would be ok. If you're really curious you can borescope the cylinders

lart951

Spencer once sold me a 944S engine in the same condition, pistons were trash, block was trash the only thing I was able to spare were the rods and the harmonic balancer, as today the block awaits the day that will be sold as recyclable metal. Listen to Darwin he is right.

Voith

Pistons are ferrostan plated aluminum. Blasting them isn't a good idea.

Cory9584

Thanks for the advice, atleast I know what I'm up against

odonnell

I had my block ultrasonically cleaned and it's sitting in my indoor garage. I didn't oil the bores after, thinking the same thing about corrosion. The other day I noticed some light corrosion on them in places... barely enough to notice and certainly not enough to cause problems. Looked like small specs of powder. That was from sitting in a garage in Houston humidity for 2 weeks after being 100% cleaned of oil on the surfaces.

Darwantae951

This car doesn't sound like a good idea.

V2Rocket

Lol,
...and then I came back and bought back the harmonic balancer on its own, for the same price I sold you the whole engine for....

So basically I gave you a free block to scrap