Ammf6 New Member 22 Member For: 3y 8m 19d Posted 08/09/21 12:03 PM Share Posted 08/09/21 12:03 PM can anyone enlighten me on the factory Barra blocks and why they vary in thickness? I've had my engine builder come back and say the block I supplied is to thin (2011 fg block 110,000ks) he said its pretty common. I do have another bf block in my shed but she's done well over 300,000ks ... is it worth pulling a block from a wreck with low ks or does the ks even matter is its going to get machined and honed ect?/ cheers Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,948 Member For: 16y 7m 6d Gender: Male Location: Melbourne Posted 08/09/21 12:20 PM Share Posted 08/09/21 12:20 PM just use the BF block, blocks are cheap/plentiful. probably just a casting process in why some cast well and some don't. Link to comment Share on other sites More sharing options...
Ammf6 New Member 22 Member For: 3y 8m 19d Posted 08/09/21 10:03 PM Author Share Posted 08/09/21 10:03 PM Thanks K31th , I’ve read somewhere 1 in 5 blocks would be under thickness … Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,948 Member For: 16y 7m 6d Gender: Male Location: Melbourne Posted 08/09/21 10:57 PM Share Posted 08/09/21 10:57 PM I wouldn't worry too much about it, even under-thickness blocks hold up to most people's power aims haha if you're going for 1000hp or something extreme like that, then yeah, perhaps care about which block you're starting with. Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 5m 16d Gender: Male Location: Adelaide Posted 09/09/21 03:34 AM Share Posted 09/09/21 03:34 AM It’s a wear process, they aren’t made that way.. They all start life the same but wear is inevitable and Atomic bin 8 out of 10 blocks due to undersize This block just came from Atomic for us to prepare and new build on and as you can see the numbers are high and obviously supplied for sale after sonic testing for minimum thickness. Do it once, Do it right Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,948 Member For: 16y 7m 6d Gender: Male Location: Melbourne Posted 09/09/21 03:45 AM Share Posted 09/09/21 03:45 AM and the only people buying an atomic block are going for high horsepower, so who cares what they recommend for any average end-user? Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 5m 16d Gender: Male Location: Adelaide Posted 09/09/21 03:58 AM Share Posted 09/09/21 03:58 AM Because it’s like $1000 for a prepared tested block to know you’re starting correctly…. Bit of a no brainer even for a $8000 slap together base build 🤔 If the foundation isn’t right it’ll crack sooner than later which a few have found out the hard way lately as these second hand blocks get used more than once Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,858 Member For: 9y 9m 17d Gender: Male Location: South Australia Posted 09/09/21 08:09 AM Share Posted 09/09/21 08:09 AM It's a couple of hundred bucks for a wrecker na engine that will have frig all cylinder wear. May as well start there and save a few bucks, if you're handy on the tools that is Link to comment Share on other sites More sharing options...
Ammf6 New Member 22 Member For: 3y 8m 19d Posted 11/09/21 09:39 AM Author Share Posted 11/09/21 09:39 AM I’m not going stupid with power but want to build it right . Don’t like short cuts . I’ve sourced 2 blocks from the wreckers from na gas motors so fingers crossed ones good. so what part actually wears jeturbo?? ? I thought some might not get made as thick / as much internal thickness Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now