Valve Guide Liners

[More Power]

Just an FYI: when using valve guide liners as intended (to repair a worn valve guide), longtime engine rebuild shops that rebuild 6.2/6.5 diesels recommend cast iron liners. They say soot in the motor oil is too abrasive for brass liners.

Makes sense....

Jim

[Robyn]

Phosphor bronze = Harder than a whores heart. good stuff.

The brass ones are indeed too soft

Missy

[More Power]

I visited a local engine rebuild shop this past August (bought a crankshaft from them). While there I talked to the shop manager about rebuilding 6.5L cylinder heads. One of the items we talked about was valve guide liners. This is the same shop that rebuilt our 6.5L TD 18:1 CR project engine. (http://www.thedieselpage.com/finale.htm)

I mentioned to the manager that cast-iron valve guide liners were being recommended for diesel engines because of the abrasive nature of soot. He quickly told me that they use bronze (probably the phosphor bronze variety), and that there hasn't been a problem with accelerated wear in these light-duty diesels. After considering that our 6.5L project ran to 300K+ miles, their advice is likely pretty good. However, he did say that they could do cast-iron valve guide liners - they're just quite a bit more expensive.

[arveetek]

After considering that our 6.5L project ran to 300K+ miles, their advice is likely pretty good.


What's the latest on the 6.5L Power Project, anyway? I know it was sold in '06 with about 250K on the clock....

Thanks!

Casey

[More Power]

What's the latest on the 6.5L Power Project, anyway? I know it was sold in '06 with about 250K on the clock....

Thanks!

Casey

Last I heard quite some time ago, the engine had accumulated >300K miles. Lost track of it since.