Who here has build his own H23 vtec?

[hondaddict]

Hello everybody!


Since 4 years now ( or a little more), i have in mind to build my own H23 vtec.
So i have read a lot of topics about this build, on several forums, and i believe i have a good idea of which way to go... ... but i may be wrong

I also start to collect some parts to do my build and actually here are the parts i have:


-complete H23A2 block, in good shape.
-complete PDE head
-a set of P5P-JO pistons
-a set of PDE-E pistons
-an Accord Type R to put the engine in ...

You may have guess why i'm planing to do this build, my lovely "black anvil" weight too much to be very fun, even if i love to drive it, and i don't want to remove too much weight from it, to keep it comfortable and pleasant.

So if someone here is experienced about this build, let's talk about it!

What i'm planning to do:

-refresh the block: i want to overbore it to 88 mm
-balance the crankshaft
-work on the head runners


There are some points about which i didn't find any clear answers, for example about the rods bearings or the pistons pins.

So any input will be appreciate!

[mercutio]

probably better off searching on prelude power or Honda tech

[hondaddict]

Thanks for your input Mercutio

I have already searched on several places : PreludePower, Honda tech, Rosco racing,... I was hoping someone has tried this modification here

I also see that 4thgenPhil was tempted to do it but i didn't know if it is still in his plan or not

So i will share with us the issues i will met

[mercutio]

they never tend to last very long from the bits i have read It does seem people collect or start collecting the bits but never go ahead with it

[hondaddict]

I know what you are talking about Mercutio, previously i began to buy parts for previous projects i never finished...

First i was planning to do a B20A7 with a B16A2 head and i bought all the needed parts but resell all before i start anything.. by lack of time and the work to do was really hard.

Then i bought pistons for another build, a high comp B20A7, i still have the pistons but no B20A7 or 3rd gen Prelude, i bought the Accord and it takes me too much time to make it run that i decided to sell the Lude ... ... once again, lack of time.

But at the same moment, i began to buy some of the parts for the H23 vtec build, so this time i really want to finish it , we will see if i go to the end this time...

About the tendance of the H23 vtec to blow out, i believe ( but i'm not sure) that i have found one of the main reason of the problem, but once again we will see if i'm right or not

In all case, even if i build this engine, i will keep my H22A7 , in case of any problem on the H23.

[mercutio]

possibly easier buying a H23 vtec engine

[hondaddict]

Yes, you are right but the specs of the "bluetop" are not really extraordinary and if i bought one of these and if i have to open it for installing high compression pistons... it will cost me much more than building my own block i presume...

I got the H23A2 for pretty cheap, 100 euros with the gearbox, so it is a good beginning

I will have some news from some machine shop i have contacted in a few weeks, actually it is Holiday and most of them are closed.

[4thgenphil]

Hello. Not done mine.....yet although I'll throw it together once mines finished although plans have changed/expanded.

I could write a whole book on what the plans are with it.

P5p are 11.1 comp type S pistons arent they?

[hondaddict]

Thanks for the input 4thgenPhil

You are right, P5P-JO are the Type S pistons, with a CR of 11.1 , they gave the same CR than with the PDE-E pistons but they got a "normal" skirt .

If you write a book about changing plans, i'll be happy to translate it in french, and i'll also add some chapters of my own life

[wurlycorner]

I could write a whole book on what the plans are with it

Or... maybe even... a profile update!