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anyone here hear about this? the Porsche alum clys are coated with this,, and are very reliable.. has benifites to this. oil retension,, unwearable cly walls. etc..
 

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The Porsche(911) guys prefer Nicasil cylinders over the Alusil cylinders. One is a coating (Nicasil) and the Alusil is an Aluminum SIlicon matrix. The 944/928 blocks are Alusil without nicasil.

My Italian Husqvarna also has a Nicasil cylindercoating that is very hard, you replace rings not cylinders. Check out US chrome, there are other vendors that do it too.

Funny thing is BMW had a bigtime problem with their Nicasil blocks in the M60 V8 engines and had to recall most of them due to chipping, wear, oil usage and general durability problems. Go figure?
 

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But Mad North-Northwest
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Funny thing is BMW had a bigtime problem with their Nicasil blocks in the M60 V8 engines and had to recall most of them due to chipping, wear, oil usage and general durability problems. Go figure?
Yeah, apparently they only tested them on European fuel, and the relatively high levels of sulfur in US fuel dissolved the coating. Oops.

That's apparently why they switched to AluSil.
 

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Jaguar used Nicasil in all their 4.0 V8 engines from 1998 through aug 2000. Didn't work for jag either as nicasil lined motors were prone to failure in the US for the reason Gubi stated. As soon as nicasil cracks, the engine becomes either a parts donor or very large paperweight. nicasil cannot be honed or repaired.
 
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