B18c head on B20 block

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Originally Posted by zco

yes the Vtec conversion kit is a must. you cannot do a b20/b18/b16 without the GE VTEC conversion kit.

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this is not true.

you can do the B20VTEC without a GE VTEC conversion kit

all you need is to:

• close off the oil hole in the VTEC head (weld or use 1/8 pressure plug)
  
• enlarge the two dowel holes in the head (drill matched to dowel pin size)
  
• make a VTEC oil line (earls hose fitting - 800106, earls hose fitting - 806106, 3ft earls -6 prolite*hose - 350306)
  
• remove the 3/8 pressure plug from the back of the head, add a 3/8 BSP to -6AN adaptor, (Pirteck or Enzed)
  
• remove the oil pressure warning light switch and add a 1/8 BSPT to -6AN adaptor, (pirtek or enzed)
  
• obtain a B20Bhead gasket (eg Cometic C4193-030 or OEM Honda)
  

and that should match the Kit, for a quite a few less bucks...

Quote:

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Originally Posted by DA9B18C

hey, i have searched and cant find a straight answer.

what are the benifits of putting a b18c head on a b20 block?
will it fit straight on with no mods?

as well as the above, you also need a B18C timing belt, a B18C water pump

are the physical dimensions the same as other b series blocks?

yes

and finally, are there any power gains, what will it at the wheels dyno with stock internals, mugen 4-1 headers and short ram intake? just rough guess?

you need to tune it to get any decent power, withy that i'd say 100-110kW, more with cam gear and ECU tuning,

thanks guys

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see bold

Quote:

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Originally Posted by tinkerbell

this is not true.

you can do the B20VTEC without a GE VTEC conversion kit

all you need is to:

• close off the oil hole in the VTEC head (weld or use 1/8 pressure plug)
  
• enlarge the two dowel holes in the head (drill matched to dowel pin size)
  
• make a VTEC oil line (earls hose fitting - 800106, earls hose fitting - 806106, 3ft earls -6 prolite*hose - 350306)
  
• remove the 3/8 pressure plug from the back of the head, add a 3/8 BSP to -6AN adaptor, (Pirteck or Enzed)
  
• remove the oil pressure warning light switch and add a 1/8 BSPT to -6AN adaptor, (pirtek or enzed)
  
• obtain a B20Bhead gasket (eg Cometic C4193-030 or OEM Honda)
  

and that should match the Kit, for a quite a few less bucks...

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You do not need to do any modifications for dowels. You can buy new dowels for $25 that mate the vtec heads to non-vtec blocks. However this means you'll need to enlarge the dowel holes in the head-gasket. Though I think i'd rather get a new headgasket than modify the head. (Then again, I did get the vtec oil port in the head welded up so my logic doesn't really apply here).

I recommend the GE kit after doing it the other way. Boring out the stock headgasket with a drill felt a bit dodgey :D

only some parts of your post make sense...

Quote:

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Originally Posted by tinkerbell

your post only just makes sense...

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Took you a couple of reads to get it I see.

Quote:

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Originally Posted by string

Took you a couple of reads to get it I see.

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yeah, no thanks to your cryptic and convoluted syntax...

Quote:

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Originally Posted by tinkerbell

only some parts of your post make sense...

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Quote:

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Originally Posted by tinkerbell's first try

maybe it felt weird as you are supposed to drill out the HEAD, not the head gasket?

Image: http://www.c-speedracing.com/howto/l...dowelhole2.jpg

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Make up your mind son.

There are TWO OPTIONS:

1) Bore out the head and use stock dowels
2) Get new dowels and not bore out the head.

There is nothing cryptic going on. Back to comprehension class.