TTY Torque To Yield Bolts
#1
TTY Torque To Yield Bolts
I must say to start, my service manual doesn't mention anything anywhere about not reusing IM bolts or any other that I've come across..With that said TTY bolts are: Bolts that are torqued to spec..But some bolts that are torqued to spec such as IM or plenum pan bolts that are torqued in a three step sequence 'should not' be reused..When torqued to spec in a single step it's referred to as 'Elastic deformation' and when torqued in a multi step sequence it's referred to as 'Plastic deformation'..the 2nd type is when the bolt has changed shape and or length..As a result they 'should' not be reused...
Last edited by It's Me Patt; 09-14-2012 at 10:41 PM.
#4
#5
Yeah, its been an ongoing debate whether the intake bolts are TTY, re-useable or what.... for my part... when I had them off, they were cheap, low grade bolts, of which, two broke off when pulling the intake. I replaced them. While it may not be absolutely necessary...... it strikes me as 'just a good idea', given the (lack of) quality of the bolts. Replacing them with some good grade 5 fasteners, or better..... would more than likely solve the issue permanently.
#6
Yeah, its been an ongoing debate whether the intake bolts are TTY, re-useable or what.... for my part... when I had them off, they were cheap, low grade bolts, of which, two broke off when pulling the intake. I replaced them. While it may not be absolutely necessary...... it strikes me as 'just a good idea', given the (lack of) quality of the bolts. Replacing them with some good grade 5 fasteners, or better..... would more than likely solve the issue permanently.
But yeah, the stock bolts are junk....And how can anything be TTY with 12 ft lbs of torque anyway?
#7
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