Engine
Head gasket/stud procedure
Flattening Stones and/or Machine Work The all-new Cometic MLS head gaskets work great and only require a little more effort than a standard Mahle hea...
Head Gaskets
The purpose of this article is to compare various styles of head gaskets that are available for the 6.5L diesel engine. Smallest fire rings Brittle ...
Total Seal Gapless Rings
Soot contamination increases engine wear and decreases oil life. Closing the gap on the 2nd ring stops soot contamination and reduces blow-by. Since d...
ARP Main Studs
This document covers the instructions to install the Quadstar ARP Main bearing cap stud kit in a 6.2 or 6.5L diesel engine See attached file
Checking harmonic balancers, Crank pulleys and crankshaft snout
If you find that you have a wobbling crank pulley or balancer you have to do some diagnostics to make sure that installing a new Fluidampr and Billet ...
Harland Sharp Roller Rockers Installation
https://quadstartuning.com/products/harland-sharp-roller-rockers Once you get your new roller rockers opened up Let's lay them out so we can see wher...
Sealing Valve Covers
Dealing with Persistent Valve Cover Leaks I wanted to share a trick I've learned for replacing valve cover gaskets that seems to solve the common issu...
Isky Block O-Ring Tool
This document provides a detailed guide on how to properly install O-rings for 6.5L cylinder blocks, ensuring a reliable seal and optimal engine perfo...
Polyurethane Engine Mount Installation
https://quadstartuning.com/products/polyurethane-motor-mounts Factory rubber mounts are no longer available in the correct size/strength. Frequently,...
What is the Optimizer 6500 Engine?
GM Introduced in 1992 as replacement for 6.2L diesel GM production ended in 1999 Rights were sold to General Engine Products Continued production by G...
ARP Head studs and more
This document provides an overview of the various head stud options available for the 6.2L engine, focusing on the ARP 8740 and ARP 2000 head studs. I...
New Engine Break-In
This article is written for a new production Optimizer 6500 engine but can be applied to other builds, where applicable. During break-in, use CONVENTI...