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JWL · 03-15-2015, 08:42 AM

There is no difference between the clamping force available with bolts or studs. If frequent removal or alignment characteristics or speed of assembly are factors then studs can have an advantage. For easier head removal, surface cleaning, or ease of replacement, bolts hold an advantage. In most examples the heads are installed and remain in position for years so there is no wearing of the thread surfaces and bolts work just fine. In a competition engine where the heads are removed at least once per week, and sometimes several times per week, studs should be considered.

03-15-2015, 08:42 AM	#15
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: Head Studs or bolts, which is better ? There is no difference between the clamping force available with bolts or studs. If frequent removal or alignment characteristics or speed of assembly are factors then studs can have an advantage. For easier head removal, surface cleaning, or ease of replacement, bolts hold an advantage. In most examples the heads are installed and remain in position for years so there is no wearing of the thread surfaces and bolts work just fine. In a competition engine where the heads are removed at least once per week, and sometimes several times per week, studs should be considered.