Supraleeturbo Posted May 1, 2017 Share Posted May 1, 2017 i have a pal doing an na-t and he wants to know how to drill the oil return hole with out putting loads of shavings in sump, he knows he will have to drain the oil after also do you need a fuel pulsation damper as well ? many thanks Link to comment Share on other sites More sharing options...
HarleyFDMD Posted May 1, 2017 Share Posted May 1, 2017 Just do it very very slowly, if i was going to do it that way i would use a 'stepped' drill bit and probably have an air line blowing away the swarf as i drilled. The best way is obviously to remove the engine though so that you can then remove the sump to clean it out Link to comment Share on other sites More sharing options...
HarleyFDMD Posted May 1, 2017 Share Posted May 1, 2017 I think that would be safer than using a hole saw.. still not 100% safe though compared to removing the sump Link to comment Share on other sites More sharing options...
Supraleeturbo Posted May 1, 2017 Author Share Posted May 1, 2017 Cheers mate Link to comment Share on other sites More sharing options...
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