heres my story i have an h23a but its not a blue top it actually is a non vtec head and its a black valve cover. So im trying to build this but people keep telling me i can not do h23v with this block. Heres a pic of the complete block


The pistons have a p14 number on them as well as the stamp on the head.heres a pic of the head by the intake manifold.
Heres a pic if the piston with a p14 number






so can the be made an into an h23v ?? i already have a vtec head actuall here is my head can i use this you can see the casting stamp

 

I am gonna see if i have time to break the block down today and get some mesurments on the crank

 

so yeah, that is what I thought it was, same thing as a H23A1 from the US. If you put the H22 head on it will be pretty low compression, due to the low piston dome of the P14 piston.

If you are planning on a full rebuild tear it down and make sure the crank is a 50mm, but it should be. Otherwise you would follow normal steps for adding the vtec head, i.e. take out the plug for oil going to the head, and use all the vtec timing assembly parts and water pipe/ thermostat housing.

 

thanks man imma try to break it down today and take some mesuremnts that head im using will work? ive looked up the casting stamp and i get back that its either a euro or or an older h22 head andy advise ?

 

can this be salvaged i will replace the crank and resleeve the block.

 

thats my k20z1 in that back i wanna finish this so i can build my z1 for my ep3.

 

Holy hell what happened to that thing!

Since it needs a new crank, girdle, sleeves, to even possibly work, probably easier to find a better full bottom end, and know it hasn't seen the carnage that thing saw!

 

i have all those thing bud i have an extra girdle crank and ill need some sleeves lol i have an h22 i think imma use the h22 and throw in the h23 crank and go from there

 

That block is toast, just recycle it and use another H block for the build.

Yes you can install an H22 head on an H23a1 block, but to get the higher compression for more power, you will need to remove the H23a1 piston and rings, and purchase regular H22a1/4 pistons and rings, you will reuse the H23 rods, replace the water pump to the H22 water pump, use an H22 head gasket, reuse the H23a1 crank pulley.

You can reuse everything else from the H23a1 block. Just make sure to remove that oil plug at the top of the block, that will allow the oil flow to properly flow.

If you have an OBD2 lude, then get the OBD2 oil pump.

 

everything ive read says use all the gears that touch the timming belt from an h22 so wouldnt the crank gear have to be h22 as well.? and yeah im just gonna use another h23a1 block that i have.

 

how durable are these h23 rods any real life experiance on how many horse power the can hold safely ?

 

He might have been meaning the outer crank pulley, the big one that drives the alt and p/s belts.

Inside the timing cover, everything that touches the timing belt gearwise must be H22. The timing tensioner can use the H23a1 setup, or the h22 setup with the KStuned tensioner.

 

holy ****....that block is fucked. You should jsut go buy a h23vtec stock built for like 900 bucks or so. Thats your best bet as honda built is far better than a h23 frankenvtec backyard build.

 

I have all the parts to replace this and i want a back yard build so i can be proud of it lol personal preference. Im in it for the experience. But anybody have any numbers they have gotten up too on stoch h series rods ? just wanna what to aim for where i can be safe still as far as hp.