/6 Casesavers for magnesium case, Are they really needed? Who can install them? DIY? Options

[tornik550]

I have a strange noise in my /6. I can probably fix it without tearing apart the engine however I was going to completely rebuild it in the winter anyway so I decided to just do it now.

I will be using a 2.7l 7r magnesium case. I read all over that Casesavers are a good idea on rebuild for mag cases. heres a few questions regarding this topic-

-are Casesavers absolutely necessary on magnesium cases?

-assuming so, who can install them for me?

-what is the approximate cost of having Casesavers installed?

-can it be properly done DIY?

I am not overly worried about the cost, I just hate shipping things and waiting for them.

[jcd914]

I think case savers (timeserts) are a required step of a mag case engine rebuild.

But first, the magnesium cases can warp due to excessive heat.
You should get the case checked over by a machine shop that knows mag cases.
A warped case can need line bore, cylinder deck resurfaced or it can be too warped to be worth fixing.

Then you can have timeserts installed and then the cylinder spigot bores checked and probably get them trued. The installation of timeserts often distorts the bore of the cylinder spigots which can make the cylinders fit too tight.

There are also a couple 8mm case studs that should get timeserts, it is a bad feeling to have an 8mm case stud pull loose as you try to torque it after assembling everything with sealant and assembly lube and new bearings, etc...

You also might consider the oil pressure relief modification and a later oil pump and ....

It is a slippery slope.

Jim