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crack testing engine block question
Posted: Sun May 25, 2014 7:44 am
by pzs
How is this done, do both halves need to be bolted together, or can the blocks be test in halves? I am looking at taking the the block to be honed and tested with the heads, next time I go to Adelaide
Posted: Sun May 25, 2014 11:22 am
by TOONGA
If it was a steel block you would magnaflux it...
but as we have aluminium blocks in subarus they would use dye penetrant inspection
TOONGA
Magnafluxing
http://www.youtube.com/watch?v=R-yXb5nO_Kg
Aluminum block crack detection techniques
http://www.youtube.com/watch?v=109-Uzu2ihw
Posted: Mon May 26, 2014 6:52 pm
by pzs
Thank you, I will look into trying it out myself
Posted: Mon May 26, 2014 7:28 pm
by RSR 555
Never seen any Subaru blocks crack, so doubt you really need to worry about it. Even on the most heavily used rally cars the only issues with the blocks is the separation on bore sleeve. As long as the block is clean and oil free, then I'd just use a can of white DyMark Flawchek near the top of the bore.
Posted: Tue May 27, 2014 7:07 pm
by pzs
Excellent, I'll research that product, thanks you saved me some work