How thick should exhaust flange be?

The most popular flange thicknesses available are 3/8 in. and 5/16 in. These flanges will last on most street vehicles. Thicker flanges are available for heavy duty and race applications.

Are all exhaust flange bolts the same?

The usual options of exhaust flanges are the 3 bolt or 2 bolt types. Usually, m10 with the 2 bolt option is helpful, and an m8 bolt for the 3 bolt. The recommended grade of bolts is 8.8 tensile or higher so that you can tighten them without stretching or breaking the bolts.

How tight should exhaust flange bolts be?

Registered. Using a long 1/2 inch swivel socket, tighten the top nut of the front cylinder head exhaust flange to 9-18 in-lbs (1-2 Nm). Tighten the bottom nut to 100-120 in-lbs (11.3-13.6 Nm). Final tighten the top nut to 100-120 in-lbs (11.3-13.6 Nm).

How do you measure exhaust flange bolt pattern?

To measure such circle measure from the center of one bolt directly across to the center of the other bolt. The Outside Diameter is the measurement of the outside of the Flange or Gasket. The Inside Diameter is the measurement of the inside of the hole of a Flange or Gasket.

Should you use washers on pipe flanges?

Mating with other joint components Water pipe flanges should normally only be coupled to identical flanges using studs or bolts with washers on both sides of the joint and nuts.

Do pipe flange bolts need washers?

Washers. Addition of steel washers to a fastener system is recommended to improve translation of torque input into bolt preload. Washers provide a smooth bearing surface, reducing friction between nut and flange. This effect is greatest when washers are through-hardened.

Can you use JB Weld on exhaust?

JB Weld ExtremeHeat is perfect for making repairs on all manner of high-heat parts, including exhaust manifolds, mufflers, catalytic converters, exhaust pipes, engine blocks, fireplaces, smokers/fireboxes, and many more crack-prone items.

Can you use 2 exhaust gaskets?

We do not recommend stacking numerous gaskets in the same flange. In-house tests have shown that a better way to fill a 1/2″ gap, for example, is to install a 1/16″ gasket on each side of a 3/8″ thick incompressible spacer ring.

How are exhaust flanges measured?

How do you read a flange size?

Use a ruler or measuring tape to find the diameter of your nipple (the horizontal width across it) in millimeters (1 cm = 10mm). Measure the nipple alone, do not include the areola, which is the outer edge around your nipple. Add 4 mm to this measurement, so if your nipple is 20 mm across, your flange size is 24 mm.

Are zinc bolts strong?

The Strength of HDG Zinc Hot-dipped galvanized zinc metal alloy screws (boy that is a mouthful) have a tensile strength of 62,000 PSI since they are grade 2 bolts. There are, however, more expensive versions of zinc bolts such as grade 5 and grade 8 that are common.

How do I choose bolts for flange?

The quantity of bolts for a flange connection will be given by the number of bolt holes in a flange, diameter and length of bolts is dependent of flange type and Pressure Class of flange. Stud Bolt length are defined in ASME B16. 5 standard.