on so i have a full jdm b16a and i have a b18b1 full motor block is cracked (so cant use block). have another b18b1 full motor but motor mount bracket snapped off. i can get a gsr block but not the pistons or i could get a ls block that has no problems and do an lsv. but here is my real question what stock parts should i use b16 pistons and head and use the ls block and rods and crank i would like to know what parts would be the absolute best for what i have the rest will be parted out

 

What is with the term best being so freely used here on ht???we don't know what is best for you because we don't know you! You failed to state you purpose of this motor. If you have a complete b16 than use that.

 

ok best as in NA build to go into an integra the reason i dont want to use the b16 anymore is because it is not anywhere as powerful as i would like it to be and i figured while i had spare parts laying around start to build it over the winter gives me something to do over the winter because i am laid off till march. i know in order to build the motor to be really powerful i need to get aftermarket parts but i have je pistons in the b16 and forged rods i have no clue what my compression is right now though and so i am thinking stock parts till i get new pistons that i know the specs on it

 

B20 Vtec.

Stock B20 block (with ARP rod bolts)
Stock vtec head
GSR, ITR, or CTR cams
Good header (rmf, hytech, toda, etc.)
68mm TB

 

^^^Agreed. Simple and economical setup and you will be more than happy. Buddy of mine has this setup and the power will really surprise you for how basic the setup is and its been running strong for years.

 

ok now with that should i get a tunned ecu and intake manifold

 

ok cool beans i will look for a b20 block and now what injector size should i use should i use b18b injectors or b16a injectors

 

If you want to make more power, Yes.

The injector size is the same.

 

You need to get a chipped ECU, and then get it tuned by a professional tuner for YOUR engine. Not a basemap, not a guess, not some **** you got off ebay.

And all D and B series injectors are the same size.

 

Close but not quite. Some of the D-series injectors were smaller. 96-98 D16Y7 injector if I remember right. They were 190's if I remember right. Those will not run a B20 properly