Jeep ZJ Thread Checkers

A guide on how to check piston to valve clearance to prevent interference. See what tools are used to make this process easier.

Ever had brand new bolts or nuts bind up on you? Take a minute to read through the steps you should take anytime you’re building an engine or installing new hardware.

Learn about thread sizing with this easy to read thread size chart!

Leaking engine cylinders is an important preventative maintenance test to do while racing. Learn the steps to perform this test and how to indicate proper engine tuning.

An LS cam swap can yield big power gains. And, you can do it at home. Here's how...

Having issues fitting headers into your car/engine? This article provides helpful hints on ways to modify or add parts to make the headers fit in your specific car. Kevin W. explains his build experience with headers.

It is most certainly an important procedure and should be part of a weekly maintenance routine.

Which size of headers should I use? Short or long tube headers? Etc. Learn how to answer these exhaust questions and choose the right header with our expert guide.

Making the switch from manifolds to headers is a popular performance upgrade, but it may take more than just bolting on the new part. We provide some tips and things to consider after you bolt on a new set of headers.

Pat shows that exhaust can make a difference on even your daily driver. Check out this video of Pat with the Hooker Muffler installed on his '03 Suburban.