If a 1/2 inch or 13mm wrench fits it, then it's either 5/16-18 if it's SAE, or m8x1. 25 if it's metric. If a 9/16 wrench fits it, it's probably 3/8-16 SAE. If a 17mm wrench fits the nut, it's probably m10x1.Jul 12, 2019
What size are header bolts?
Header Bolts, 3/8-16 x 1 Inch, Set/12.
Can I reuse exhaust manifold bolts?
You could reuse them, if you think they look good, but your chances of one breaking later have gone up now. I replace them every time, just heat the area around the studs, and melt a candle or crayon into the threads, let cool, they should come out easy, may need to heat again.Oct 4, 2018
Do I need new intake manifold bolts?
The intake manifold bolts have a rubber expansion grommet made to give with the expansion and contraction of the plastic manifold. It is recommended to replace these bolts when doing an intake manifold gasket to keep even pressure on the gasket at all times.May 26, 2015
How often do exhaust manifold bolts break?
The passenger and driver exhaust manifold bolts let go at roughly 70,000 miles and we had them replaced by the dealership under warranty.Mar 9, 2020
Should I replace exhaust manifold?
A faulty manifold must be taken off and inspected, and replaced with new manifold. ... Unfortunately, the exhaust manifold is an absolutely critical component to your vehicle, and if you ignore your cracked manifold, the problem will only get worse and more expensive.Sep 29, 2015
How tight should exhaust pipe 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).Apr 21, 2011
How do you torque exhaust manifold studs?
Use a small amount of anti-seize on the exposed threads that will be in contact with the nut. Install the exhaust manifold gasket and exhaust manifold. Install the washers and 12-point nuts and torque the nuts to 40 ft-lbs. Tighten in a sequence working from the inside to the outside as shown at right.
Do you have to torque exhaust manifold?
The solid structure to which the pipe is bolted is the exhaust manifold. Installing a manifold requires careful torquing of the bolts.
What is the torque specs on a Chevy 350 exhaust manifold?
Bolts or Parts Lube or Sealer Torque to:
--------------------------------------- -------------------- ----------
Valve Cover Engine Oil 3 ft-lbs.
Exhaust Manifold Anti-Seize Lubricant 25 ft-lbs.
Spark Plugs No Lube or Sealer 20 ft-lbs.
Flexplate (Automatic) Flywheel (Clutch) Thread Locker 60 ft-lbs.
How much is an exhaust manifold repair?
Labor Costs Usually, this type of repair will run between two and three hours. Most independent shops charge around $80 to $90 an hour, so it should cost between $160 and $270 in labor. At a dealership, with a labor rate of approximately $110 an hour, you can expect a labor bill of between $220 and $330.Feb 24, 2017
Should I replace manifold bolts?
In addition, we recommend replacing all of the bolts with OEM mounting bolts or studs. When you replace the manifold with a new one, it will be prone to the same warping that broke the bolt originally – so at the very least, be sure to replace all of the bolts with OEM mounting bolts or studs.Jun 26, 2020
What can a broken exhaust manifold bolt cause?
- Excessive engine noise.
- Decrease in power, acceleration, and fuel efficiency.
- Burning smell coming from the engine bay.