B20b bottom end + B16 Vtec head

yeah, you need to get high comp pistons new rods, and sleeve the block for protection if you can afford it. be aware you will need to upgrade your fuel lines, change the ecu + tune, and all the pumps. eg: oil, water + fuel.

sorry :) Thanks LowEK

Okay... I have a question: why not just drop the B18C in there? Why bother swapping heads? Sounds like a lot of messing around for not much gain.

Extra torque mainly, but I tend to agree with you. Most people that I have heard of go the next step for a 2.2l instead.

I destroked it to gain the stronger crank
I loose about 2mm stroke outa it
the B20 has a bigger bore
i got it sleveed in the US by golden eagel

Go on HT and they'll have lots of B20/B16 aka LS/VTEC line kits. G/E, Endyn, Full-Race, etc the rest. The G/E kit looks the best as it has the gasket, lines, dowels everything. You can always buy a GSi/LS block and bore it to 84mm? That would be 2.0L also & possibly micropolish the crank. Unless you already have the B20...

B20s have had problems with sinking sleeves - so doing what SCRMN has done and sleeving it could be wise. Sleeving is quite expensive though. Maybe even a block guard - I know they dont sound good but at least they will attempt to prevent destroying the block when the sleeves crack.

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Originally Posted by RSA_Honda

Hi Guys

I have tried the search option , but unfortunately i didnt get the answers to the questions i have :(

From South Africa , so our resources are a bit limited when it comes to Honda experts , thus the question here ..

I have a b20b bottom end, to which i want to fit my b16 Vtec head. In theory i dont see a problem with this , but i have picked up that the B20b has a fairly low compression ratio.

Does anyone know the compression ratio that the engine will be after the B16 Vtec head is fitted to the B20b ?

Also, if the ratio is a bit low for decent compression , what ratio can one run on the above setup - reliably ?

Thanks a million in advance for the help

:thumbsup:

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You might find this useful

link: b20vtec parts list and faq

Thanks for all the info guys , will go read up :-)

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Originally Posted by ewendc2r

Extra torque mainly, but I tend to agree with you. Most people that I have heard of go the next step for a 2.2l instead.

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More torque? We're not talking about enough torque here to really be like, squabbling about an extra few ccs. Just up the power in other ways. MUCH cheaper. I mean, if you're a top end race builder, then I understand. But if you're building race engines you shouldn't need to ask questions here.

200cc is more than just a few extra cc. imo. ;)

10% increase in torque approx for a 1.8l - 2.0l ... That is respectable.

Yea and this is a 1.6L - 2.0L.
400cc