The LS1 engines have aluminum heads and an aluminum block however like all (or at least most) aluminum engines they have iron cylinder liners.quote:
Originally posted by Ken4:
Modern engines are mostly aluminium, arent they?
The method of using a very high silicon content aluminum in the blocks, and then etching the bores so that the bore surfaces are essentially nothing but the polished silcon, has proved very durable. This non-liner approach was pioneered by Porsche with the engine in the 928, and later used by Merecedes beginning with their last generation of V8s. I'm surpised more companies don't go to this production method.quote:
Originally posted by Patman:
The LS1 engines have aluminum heads and an aluminum block however like all (or at least most) aluminum engines they have iron cylinder liners.quote:
Originally posted by Ken4:
Modern engines are mostly aluminium, arent they?
Well you can get plenty of rust over night. Drop a nail in water and look at it the next day. I'm sure setting around for long periods of time probably contribute to the higher iron samples during the winter, because the water is not burnde off. But I wouldn't loose any sleep over itquote:
Originally posted by Ken4:
If I park outdoors for a week, will the engine internals rust on the inside due to non-use?
Yes there may be some surface oxidation, but I would use a good oil with a decent TBN and not sweat it.quote:
If I park outdoors for a week, will the engine internals rust on the inside due to non-use?
All motor oils contain corrosion inhibitors, so don't worry, and the better oils have more effective inhibitors. The thin film of oil remaining on all your internal engine parts protects those parts.quote:
Originally posted by Ken4:
If I park outdoors for a week, will the engine internals rust on the inside due to non-use?
quote:
Originally posted by G-Man II:
The method of using a very high silicon content aluminum in the blocks, and then etching the bores so that the bore surfaces are essentially nothing but the polished silcon, has proved very durable. This non-liner approach was pioneered by Porsche with the engine in the 928, and later used by Merecedes beginning with their last generation of V8s. I'm surpised more companies don't go to this production method.quote:
Originally posted by Patman:
The LS1 engines have aluminum heads and an aluminum block however like all (or at least most) aluminum engines they have iron cylinder liners.quote:
Originally posted by Ken4:
Modern engines are mostly aluminium, arent they?
This is the method that GM tried with the Vega engine back in the 70s. Unfortunately, technology was such back then that the bores could not be uniformly rendered and we all know what smoke monsters those things were. MB has never had that problem and I've personally seen a MB V8 (3.8 litre) with over 300,000 miles on it that didn't smoke and used only a negligible amount of oil.