Ok first post so i'll make this quick, When welding or grub screwing the vct oil feed shut on the R33 head and making up an external oil feed for the vct, can i use an rb30 headgasket and put it together using the rb25 head bolts? Then put it all back together then good to go? My reason for asking is because in this guide he shows in the second or third photo a bit that has been welded on for seating the rb25 head gasket?
http://homepages.vodafone.co.nz/~lakewood/Skyline/R33_head.htm Is there any benefits using the 25 gasket?
Also with running the motor in, is it best to drive it softly for 1000ks (or whatever is recommended) with mineral oil then dyno tune it or tow it and chuck it straight on the dyno? If driving it for 1000ks i will be using all the stock bolt ons rather than the upgraded items
