k31th less WHY; more WOT Site Developer 28,291 Member For: 16y 9d Gender: Male Location: Melbourne Posted 10/12/19 09:13 AM Share Posted 10/12/19 09:13 AM umm, don't these guys know de-stroking is the way to go? wonder why they'd want to make the bore-to-stroke ratio even worse... even if the larger capacity makes more power on the same boost doesn't mean the engine is going to be safer. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 10/12/19 09:26 AM Share Posted 10/12/19 09:26 AM Piston speed ??? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,291 Member For: 16y 9d Gender: Male Location: Melbourne Posted 10/12/19 09:28 AM Share Posted 10/12/19 09:28 AM you'd think that'd be putting extra stresses on the valvetrain and crankshaft+assembly bits. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 10/12/19 09:52 AM Share Posted 10/12/19 09:52 AM Stroke would increase from 99.31 , To 103.9mm. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,291 Member For: 16y 9d Gender: Male Location: Melbourne Posted 10/12/19 10:30 AM Share Posted 10/12/19 10:30 AM that's fairly obvious Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 10/12/19 11:45 AM Share Posted 10/12/19 11:45 AM I actually worked it out... Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,291 Member For: 16y 9d Gender: Male Location: Melbourne Posted 10/12/19 11:48 AM Share Posted 10/12/19 11:48 AM it says it raises it to 103mm on the link in the screenshot... and the stock stroke is easy to look up. 1 Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 10/12/19 11:54 AM Share Posted 10/12/19 11:54 AM I didnt read 103.9mm where does it say that. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,291 Member For: 16y 9d Gender: Male Location: Melbourne Posted 10/12/19 11:57 AM Share Posted 10/12/19 11:57 AM 103mm it says ->https://www.spoolimports.com/blog/post/big-block-barra-results (I edited my post to say that above because I only remembered the 103mm rather than 103.9 like you calculated). also on the link to the "4.2 stroker kit" it says 103mm all over it -> https://www.spoolimports.com/ford-barra-stroker-kit-4-2 Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 10/12/19 12:04 PM Share Posted 10/12/19 12:04 PM Yep so 103 mm which isn't 103.9 mm 103 mm isn't 4.2L 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