3.8 Replacement Motors

[Ian c]

Originally Posted by The Radium King

another reason to keep the revs up.

[Jake Raby]

add stroke and put a shorter connecting rod with the combination. No way to better wipe out cylinders than adding rod angle!

Then, add a larger bore and multiply the issues. Yeah.

[The Radium King]

that makes sense. interesting read here too:

Bore scoring on refurbished engine - PistonHeads

where they suggest piston and cylinder coating changes may also play a role. they also state that low rpm, high torque situations are the culprit (situations facilitated by improvements to variocam, and another reason why forced induction cars have such finite lifetimes); I presume your increased displacement builds offset potential damage from increased rod angle by using improved linings?

[Jake Raby]

Originally Posted by The Radium King

that makes sense. interesting read here too:

Bore scoring on refurbished engine - PistonHeads

where they suggest piston and cylinder coating changes may also play a role. they also state that low rpm, high torque situations are the culprit (situations facilitated by improvements to variocam, and another reason why forced induction cars have such finite lifetimes); I presume your increased displacement builds offset potential damage from increased rod angle by using improved linings?

Our exclusive use of Nikisil plating in all engines eliminates cylinder scoring and accelerated wear. This is not a coating, like others, it is a very hard, wear resistant, friction resistant plating process that couples Nickel, Silicon and Carbide into one super durable wear surface.

This is not new, Porsche has utilized it for decades with all the engines that do not fail, the ones without radiators and even the Mezger based GT3 and TT engine use it, along with the Cayenne TT engines.

Its just expensive.

[Mark_T]

Originally Posted by Jake Raby

Our exclusive use of Nikisil plating in all engines eliminates cylinder scoring and accelerated wear. This is not a coating, like others, it is a very hard, wear resistant, friction resistant plating process that couples Nickel, Silicon and Carbide into one super durable wear surface.

A request for clarification... Are you quoting someone, Jake, or are you claiming exclusive use of Nikisil?

[The Radium King]

or, he only uses nikasil in his engines. ie, he uses it exclusively. the other interpretation seems off, as anyone can have there cyls lined with nikasil from lne.

of course, I am neither jake nor do I speak for him, but I am an honorary cadet with the grammar police.

[pk2]

Originally Posted by The Radium King

or, he only uses nikasil in his engines. ie, he uses it exclusively. the other interpretation seems off, as anyone can have there cyls lined with nikasil from lne.

of course, I am neither jake nor do I speak for him, but I am an honorary cadet with the grammar police.

OMG Please don't proof my posts, I'm dyslexic as all _ell.

Guess the question remains, are these early 3.6s crap?

Best regards, pk

[pk2]

Originally Posted by Jake Raby

add stroke and put a shorter connecting rod with the combination. No way to better wipe out cylinders than adding rod angle!

Then, add a larger bore and multiply the issues. Yeah.

Are you saying that is what was done for the stock 2002 3.6l Carrrea motor? Do they all fail?

Regards, PK