LS Vtec

**SpiceyTeg** · 14-10-2003 02:44 PM

Originally Posted by wynode

Yes thats pretty much it.

Putting a DOHC VTEC head on a B18b block. A few minor modifications need to be made, but it gives you DOHC VTEC on a budget. Quite popular in the US, but not over here.

hey, do you know who do these sort of conversions in Aus.. i got the GSI, a few engine mods, but keen as to get some more power

**ALLMTR** · 14-10-2003 07:12 PM

[quote=VTEChnique]

Originally Posted by "wynode"
The LS-VTEC is more suited to FI because it runs a lowercompression than the B18C DOHC VTEC[/quote

YEAH SO YOU KEEP TELLING US _ DO YOU KNOW ANYTHING ELSE ABOUT THIS ENGINE ? OBVIOUSLY NOT !!!!!

yes it IS lower compression than B18C, but if you check out the output of the B18B you will be surprised to notice it actually has a higher TORQUE output some 2,000RPM lower than the B18C..

this is why we add the B16A VTEC head to the B18B Block - to give it some top-end power.. you are left with a motor that is arguably stronger than the B18C but it is also better flowing and open to tuning a lot better than the B18C head.

the B18C head is regarded as the worst of the DOHC VTEC's.

MR EXPERT !!

Tell me more MR EXPERT, I'm alwways eager to learn MUHAHHAHAA

**pornstar** · 15-10-2003 08:55 AM

Thats news to me. If thats the case, ill go buy a 4,500 dollar front cut, and port and polish the head and sell it as an ITR front fut for 9,000...

EG4 if ur who i think u are, illl kick u in da left nutsack when i next see ya. But as far as LS/VTEC goes, they do it in the USA, because there is an abundance of parts (and knowledge) in the hondas over there. Its about 500 USD cheaper to get a b18a/b as opposed to the b18c. 500 USD can get alot of other stuff, hence with their knowledge base and prices, its easy for them to addd a b16a head to the b18a/b. As far as torque etc, I dont know how much more tourque there is, but there cant be much, as they are still both 1.8s in essence. Admittedly, I dont know much about that difference, but I do know that with the knowledge and prices in Australia, I wouldnt bother with such a conversion.

Ill add in that the b18c bottom end is much stronger than a b18a/b bottom end, the engine is braced/girdle etc which makes it stronger.

As for the ITR, Honda didnt employ its racing heritage and develop a race type car by just porting and polishing the head of a b18c. The pistons are made to withstand 10,000rpms, whilst being lightened. The rods are much lighter than normal B18c rods, and are strengthened. The valves, valves springs and retainers are all made from lighter material and specially coated similar to that of the NSX, theres plenty more but its 9am and I havent slept yet so I'll leave it at that. Someone take over, im too tired to continue.

If u gave me a choice between the LS/VTEC and a b18c stock, if both were the same price, I'd still choose the B18c.