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| 6.2/6.5 Tech Tech forum containing the best tech for these engines. Please post in the related 6.2L & 6.5L forums. We'll transfer the best topic threads to this forum. |
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#1
09-26-2012, 11:50 AM
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Valve Guide Liners
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
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Current Feature Articles Current Product Reviews 6.2/6.5 Diesel Troubleshooting & Repair Guide Ultra Low Sulfur Diesel FAQ 
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#2
09-27-2012, 09:22 AM
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Phosphor bronze = Harder than a whores heart. good stuff.
The brass ones are indeed too soft Missy
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(1) 95 Suburban 2500 4x4 (1) 2017 Mercedes C class (1) 1997 Astro "CATVAN II"
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#3
10-31-2017, 01:02 PM
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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.
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.
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Current Feature Articles Current Product Reviews 6.2/6.5 Diesel Troubleshooting & Repair Guide Ultra Low Sulfur Diesel FAQ
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#4
11-01-2017, 01:28 PM
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Quote:
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
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1995 K1500 Tahoe 2 door, 6.5LTD, NP241, 4L80E, 3.42's, 285/75R16 BFG K02's, Kennedy OPS harness, gauges, and TD-Max chip, Dtech FSD on FSD Cooler, vacuum pump deleted, Turbo Master, 3.5" Kennedy exhaust, F code intake, '97 air box, dual t/stats, Racor fuel filter, 320K miles and running strong!
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#5
11-14-2017, 01:36 PM
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