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Torque specs head bolts MBL

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Johnthompson
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Joined: Tue Mar 18, 2008 2:46 pm

Torque specs head bolts MBL

Post by Johnthompson » Wed Aug 28, 2013 8:03 pm

I have searched the engine material I have been able to assemble on the 1956 MBL in our new to us 1950 U-22, but cannot find the torque specs for the head bolts. Can someone share the proper order and specs. Thanks.


Thompson

Greg Wallace
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Location: Indian Lake, Ohio

Re: Torque specs head bolts MBL

Post by Greg Wallace » Thu Aug 29, 2013 7:44 am

65 ft. lbs.
Greg Wallace 23 Custom 22166 former Chris-Craft dealer Russells Point, Oh.

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JimF
Club Executive Team
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Re: Torque specs head bolts MBL

Post by JimF » Thu Aug 29, 2013 8:01 am

I believe Mitch LaPointe has the torque sequence posted on his site. Classicboat.com
1930 Chris-Craft Model 100 20' "MOXIE"
1935 Chris-Craft Deluxe Utility 18' "ALICE K II"
1940 Chris-Craft Red and White 25' "Old Paint"
1946 Chris-Craft Sportsman 25' "CinCity"

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drrot
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Re: Torque specs head bolts MBL

Post by drrot » Thu Aug 29, 2013 8:17 am

They are posted here. http://www.classicboatconnection.com/torqspecs.htm
The secret is to continue checking and retorquing till it stays at the spec.
Jim Staib
www.finewoodboats.com


1947 Penn Yan 12' Cartopper WXH474611
1950 Chris-Craft 22' Sportsman U-22-1532
1957 Chris-Craft 26' Sea Skiff SK-26-515
1968 Century 17' Resorter FG-68-174

Johnthompson
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Re: Torque specs head bolts MBL

Post by Johnthompson » Thu Aug 29, 2013 8:47 am

Thanks guys.

Thompson

charlesquimby
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Location: St Leonard, Maryland

Re: Torque specs head bolts MBL

Post by charlesquimby » Thu Aug 29, 2013 12:07 pm

I would hot torque if at all possible. Any concurrence on this? Charley

Greg Wallace
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Location: Indian Lake, Ohio

Re: Torque specs head bolts MBL

Post by Greg Wallace » Thu Aug 29, 2013 12:25 pm

My inclination would be that the specs are for "assembly" and the inference is "cold". I do, however agree with re-torque after cool down from normal run up until consistent results are observed.
Greg Wallace 23 Custom 22166 former Chris-Craft dealer Russells Point, Oh.

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John DeVries
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Location: George, IA

Re: Torque specs head bolts MBL

Post by John DeVries » Mon Sep 02, 2013 7:27 am

A Fel-Pro site recommends running the engine up to operating temperature and torquing the bolts in the range from there down to room temperature.

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