Rocker arm dislodging
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Rocker arm dislodging with valve seat falling out

February 20, 2017 Danny Bender

Have you ever had a customer come in and complain of a poor running engine? After diagnosing it you find engine misfire codes. To narrow down the issue you do a compression test or cylinder leak down test. Rocker arm dislodging with valve seat falling out. Now you have isolated a specific cylinder […]

VVT Technology
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Variable valve timing-cam phasing-VVT- how does it work

December 14, 2016 Danny Bender

Variable valve timing-cam phasing-VVT- how does it work ? Valve overlap. Valve overlap is the amount of time the intake and exhaust valves are both open at the same time. Less overlap produces a smooth idle and more slow speed torque. But poor high speed performance because there is not […]

Head cracked
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Cylinder head cracking-What can cause it-FAQ

February 5, 2016 Danny Bender

Cylinder head cracking can result in catastrophic damage to the engine. In some cases, cylinder head cracking may be so severe that replacing the complete engine is the only cure. As a result, most motorists try to prevent cylinder head cracking, as an ounce of prevention in this case is […]

Valve guides
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Valve guide wear-what to look for

January 27, 2016 Danny Bender

Valve guide wear refers to clearance between valve stem and valve guide. As guides wear, the side to side movement can cause valves to seat improperly. For this reason, guides must be checked, and replaced or repaired if beyond manufacturer’s specifications. One thing you can almost always count on when […]

Resurfaced cylinder head
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Cylinder head resurfacing- (Dry Milling)

December 29, 2015 Danny Bender

Extremely smooth finishes require  Cylinder head resurfacing- (Dry Milling) to achieve really low Ra numbers. I like to use CBN or PCD tool bits to do a resurfacing job. You have to make sure you use the correct feed rate and speed – and the equipment is rigid enough to hold […]

3.1-3.4 cylinder head
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GM 3.1 and 3.4 Cylinder Head – Manifold Issues

December 26, 2015 Danny Bender

GM 3.1-3.4 Cylinder Head and Manifold Issues Confused about 3.1 / 3.4 Cylinder Head Types. Installers are not finding out until it is too late and the Cylinder Head is already installed. If you do own a vehicle equipped with a 3.1L or 3.4L engine.. chances are that you have already […]

install valve seat
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How to install and grind valve seats

December 17, 2015 Danny Bender

Learning how to install and grind valve seats can help solve oil burning issues. [wp_ad_camp_1] The growth in the valve seat insert market can be traced back to the early 1970s when the switch to unleaded fuel took place. Most of the engines in use or that were in core […]