Thread: Reusing 4 Tech Bolts?
05-22-2009, 01:19 PM #1
Reusing 4 Tech Bolts?
I know that their "yield to spec" bolts for the head, fly wheel, main and rod bearings but how many people do/dont replace them? We've "reused" 1 time only bolts on cars pushing boost upwards of 50 pounds with no problems. Im new to the 4 tech platform and have had some friends tell me I absolutely have to change the bolts durring rebuild. Can some of the hard hitting 4 Tech guys WITH EXPIERIENCE rebuilding these motors help a brother out... Thanks
05-22-2009, 01:21 PM #2
- Join Date
- May 2007
05-22-2009, 01:48 PM #3
CAUTION: This assembly uses stretch screws.
As the screws have been stretched from the
previous installation, it is very important to
measure each screw at assembly. If screw is
out of specification, replace by a new. Failure
to replace screws and to strictly follow the
torque procedure may cause screws to loosen
and lead to engine damage.
CYLINDER SCREW M11
SERVICE LIMIT 148.5 mm (5.846 in)
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