Blowed head gasket cost to replace

SOURCE: Overheating and water mixed in with oil

87 toyota 4 runner 22r engine. getting water in the crank shaft after changing the head

SOURCE: 1992 Toyota Previa van,Oil dripping onto exhaust manifold, replace head gasket? need a free manual!

The toyota previa uses a formed silicone gasket for the valve cover and the cover is held in place by metric shoulder bolts ( 10mm). The valve gasket leaks because you can't get enough preload on the bolts to re-seat the old gasket when it gets old and shrinks. The shoulder bolts only allow you to tighten the gasket enough to seat the shoulder on the bolt. If you continue to torque down the suspected bolts, you will snap the bolt off ( don't ask me how I know this ). You can either 1.)replace the old gasket with a new one or 2.) remove the existing bolts around the leak area and put in new metric bolts that do not have a shoulder. You may want to put in a small sleeve into the existing bolt hole but shorter than the thickness of the valve cover to account for the smaller diameter bolt. You can now torque down the bolt and get enough preload to seal the valve cover without removing the old gasket. Make sure you use a torque wrench ( in-lbs) or be very careful not to snap these small valve cover bolts.

SOURCE: Head gasket blown. What is approximate cost to

Considerations
1. Many internal engine problems, such as a blown head gasket, cracked head or cracked piston, can be repaired without having to replace an entire engine.
Potential
2. While taking the time to replace an engine may seem labor-intensive and costly, it will add years to a vehicle's life and will save a car owner from the cost of having to buy a new car.
Benefits
3. Taking a car to a mechanic and replacing an engine with a used engine can cost between $1,000 to $2,000 for parts and labor.
Solution
4. Car owners interested in replacing their engines with new ones can expect to pay anywhere between $2,000 to $4,000.
Speculation
5. For those interested in doing the engine replacement themselves, purchasing specialized tools needed for the job is a cost to consider in addition to the price of a replacement engine.

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SOURCE: head gasket on my 1990 toyota V6 3.0

belt digrian 1990 4runner 3.0 v6

JeB

• 178 Answers
• Posted on Dec 02, 2010

SOURCE: 1994 toyota pickup blown head

So the first question is ... is it really a blown head gasket? Could also be damaged head, block, etc and the timing chain can wear through it's housing and allow coolant into the oil. If it is a blown head gasket then why did it happen? Is the head warped, coolant passages corroded, or ?? Here's link to
a '93 manual to give you some idea what you're dealing with. http://personal.utulsa.edu/~nathan-buchanan/93fsm/ Can you replace the gasket in shop or driveway ... depends on what sort of
complications you run in to. You may want to have a valve job done while you're there, maybe
time to do the timing chain, etc. Give it a try.