Duke 2 Stroke Posted January 6, 2019 Report Share Posted January 6, 2019 I have a 421 Cub engine I’m building and I wanted to know what are the difference between the thickness of the gaskets. What are the different sizes for? I have a .012 thickness gasket and a .020 thickness gasket. Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 6, 2019 Report Share Posted January 6, 2019 Rod .012 for 115 But .045 for 110 so idk about .020 What pistons? Quote Link to comment Share on other sites More sharing options...
Tedder Posted January 6, 2019 Report Share Posted January 6, 2019 Calvin casted for specific gaskets but most Builders adjust the porting to use a .020 http://www.cpindinc.com/pub/part_list?manufacturer=3 1 Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 6, 2019 Report Share Posted January 6, 2019 Porting and dome specs can play a role in gasket thickness. Might be something to look at also. Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 6, 2019 Report Share Posted January 6, 2019 ^ , ^ assumed it was as cast, since he's asking us ,instead of builder Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 6, 2019 Report Share Posted January 6, 2019 ^ , ^ assumed it was as cast, since he's asking us ,instead of builderOh yea. No one ever asks the builder first. Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 6, 2019 Report Share Posted January 6, 2019 Fb , HQ, builder Same order they picked builder in Sent from my XT1080 using Tapatalk Quote Link to comment Share on other sites More sharing options...
brock350 Posted January 6, 2019 Report Share Posted January 6, 2019 can someone help me anawer my question im new here dont know much Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 6, 2019 Report Share Posted January 6, 2019 Thread hijacker= no answerSent from my XT1080 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
brock350 Posted January 6, 2019 Report Share Posted January 6, 2019 wait am i a thread hijacker sorry i dont know how to use this 1 minute ago, 375hp banshees said: Thread hijacker= no answer Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 6, 2019 Report Share Posted January 6, 2019 Ask awaySent from my XT1080 using Tapatalk Quote Link to comment Share on other sites More sharing options...
brock350 Posted January 6, 2019 Report Share Posted January 6, 2019 i need help rebuilding my banshee i think i just need to rebuild the top end but im not sure how to tell if the crank needs replacing also one exuast was smoking more than the other when it was running let me know thanks also had some old cylinders that i barely used was wondering if i could make them good again 2 minutes ago, 375hp banshees said: Ask away Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted January 7, 2019 Report Share Posted January 7, 2019 Now back to your regularly scheduled thread already in progress... So, is it as cast or did your builder send those gaskets with it after port job? Quote Link to comment Share on other sites More sharing options...
Duke 2 Stroke Posted January 25, 2020 Author Report Share Posted January 25, 2020 On 1/6/2019 at 8:54 PM, 375hp banshees said: Now back to your regularly scheduled thread already in progress... So, is it as cast or did your builder send those gaskets with it after port job? I have a 421 cheetah cub non ported. Wasn’t sure what thickness to go with at time so I went with .020 base gasket Quote Link to comment Share on other sites More sharing options...
gusto Posted January 25, 2020 Report Share Posted January 25, 2020 That’s a pretty standard choice. Make sure you measure your squish with a piece of solder. YouTube SouthTexasBanshee and he will show you how to measure it. Quote Link to comment Share on other sites More sharing options...
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