.0002-.0003 of an inch is the expected crush on 574 when properly used.
Properly applied and assembled is the key phrase. Timing is everything. If you are not confident in your assembly technique avoid using 574 on the webs.
Quote:
Originally Posted by Henry Schmidt
I have articulated and documented the theory of shear resistance offered by LocTite 574 flange sealant. I have illustrated in previous posts the movement called shuffle that occurs where the case halves come together at the main webs. There is absolutely no down side to properly applying Loctite to the main webs.
The choice is yours.
One additional thought: Shuffle is a real issue in a high performance Porsche engine that can be best addressed by methods like shuffle pins or hollow dowels. That said, anything that can add to the stability of the engine platform is a good thing and we have first hand experience that gluing the webs reduces shuffle.
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Shear strength of 574 is well documented. Reducing main web shuffle, especially in mag case motors is valuable. I have seen zero documentation [claims of detrimental effects] of stabilizing main web contact. The theory that it "may" cause significant tolerance issues is just that, an undocumented theory.