which headgasket to use for this setup b16 block with gsr head or itr head. which timing belt to use???

 

B series VTEC head gaskets, timing belts are the same

 

All DOHC VTEC headgaskets are the same... P30 will be their part number... Timing belts are different however... With the B18C/1/5 having a 270mm deck height it takes a timing belt which is a bit longer then that of a B16A... You always want to get the T-belt that goes for the block... LS/CRVTEC's are the exception as you buy for which water pump you run... They too have 270mm decks but it all depends of if you run the nonVTEC (17 tooth) or the VTEC (22 tooth) water pump... As you can image you would not be able to stretch a nonVTEC T-belt over a B18A/B/B20B/Z/B18C/1/5 while running a VTEC water pump and vise versa... Just get a new DOHC VTEC headgasket, water pump, and B16A timing belt... Peace