What causes bent exhaust push rod?
The cause of the bent push rod is the valve guide thimble is only press fitted, and easily loosens when the engine reaches a certain temp. The thimble then pushes outward, restricting the movement of the valve spring, eventually causing the push rod to bend.
Can you straighten bent push rods?
Yes, you repair them by going to your favorite auto parts store and ordering a new set. You also need to figure out why they are bent. Way back when, I asked my high school autoshop teacher about the “slightly” bent pushrods in the engine I was rebuilding.
How much does it cost to fix a bent pushrod?
It might take 7 hours (very rough) to replace the one head that has the broken valve, so 7 hours of labor is roughly $630. So, adding in a little for the incidentals, at minimum, it’d cost at least $1,000 if you just replaced the head to solve the problem but that assumes that no other damage is found.
What causes bent pushrods SBC?
Re: SBC 350 keeps bending push rods A sticky valve can also cause the rod to lose contact with the valve train and when it does it can get bent. Sometimes just a little at first but then, due to reduced overall length, if the valve sticks again – it’s all over. That usually is an exhaust valve issue.
What is a bent pushrod?
A number of items can contribute to a bent push rod. Most common is a sticking hydraulic lifter which can end up with enough of a gap between the top of the lifter and the push rod that the push rod can get sideways and end up bent. Metal fatigue over the years can also cause a push rod to bend.
Can you drive a car with a bent pushrod?
You can drive with a slightly bent pushrod. Bent Pushrod will only cause your car to reduce power, have a ticking sound, and fail the compression test. However, it is recommended to diagnose and replace bent pushrod once you notice any of these symptoms.