Question about Toyota HiAce
Head bolt tension for toyota hiace van model 1991 2rz motor
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: head bolt tension setting
these specs straight from service info
25Nm + 70deg+ 70deg+ 30deg
alot of after market gasket sets are the 25Nm and 3 lots of 60deg and the extra 10deg bolts are meant to be replaced (use once only) alot of bolts tend to start stretching when doing last 10 deg use oil on threads and washers under bolts 25 and 3 lots of 60deg is correct and more commonly used.
Posted on May 28, 2009
SOURCE: toyota hiace 3L 2.8 diesel
possibly the firing order on the other car and the firing order on this one are diffrent. if it has a disributar, look at both manuals and make sure the spark plug wires are going to the right piston.
Posted on Jun 20, 2008
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.
Posted on Jul 15, 2009
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