Hello too felow EG.. hehe.. im still running stock on each bodyparts. Even still retain the curve EG8 spoiler. Hehehe. B18 engines are insanely expensive now.. with floor engine price can up to 5k w/o gbox. Im also interested in swapping B20 block.. Just i dont have basic idea of it.. Quite scared cuz a lotta my fren who do swap facing the problem i.e blok pecah, piston ring pecah n so on.. So maybe i can start by learning from u.. B20 block comes from CRV right? Non VTEC engine. So the rev are not high compared to B16. So how does it gain power actually?
It gains power by pure displacement, I run a 85*89 setup, custom arias forged piston dome volume
1) cranks were sent for balancing along with the flywheel, crank pulley and clutch cover. This reduces vibration a lot, so it's a good step to do for B20B since the original was not designed to run at such a high rpm. only the crank is required, but since the cost is roughly the same, I sent everything.
2) rebore for 85mm. You will need to match each piston to bore. You cannot simply plonk them in and expect them to rev 8K+ without problems.
3) cylinder head work. Replace all valvetrain, no questions asked, you do not want simply plonk in a high duration and lift cam on aging valvesprings (they have a lifespan). you'll drop a valve, and boom! all your money down the drain.
Total I spent I think in the region of 15K plus
block was RM500, but the workmanship and parts came to that amount.
Sounds scary, but I did this in the span of 3-4 years, one step at a time, while using my B16A, I was preparing my B20B already.
But budget spec would be shaved CF4 pistons (reduce compression)
new oem valvetrain (new springs, retainers and keepers, so you don't break them and kill your engine) with type R cams with adjustable pulley, (so can increase overlap, and reduce compression to suit the fuel)
Balance the crank (and the various bits since the price is the same, they only do it once with everything you give them)
Get a bottom end brace, there's cheaper options with Super90 now, last time have to buy from a Type R (I think B18C GSR has them too)
Total should be about 8-9K or more, if you buy a second hand hondata or a new one, but you'd make more power than B18C.
With that said, B18C is a bargain at 5K... IF you don't modify it at all.
If you start modifying, then the 5K + mods will easily exceed 8-9K, and you'll still end up with a less powerful engine than a B20B vtec.Unless you go turbo, but it'll still cost you to replace the pistons and rods with forged items.
so the choice is yours.
