Repair B18C or Use parts and build a B20???


ijwhiteman

ijwhiteman

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As above really what are your thoughts?

My B18C has always used oil and on track it does 200ml every 10mins :angry2:

So rip it apart and fit new rings? Already changed the PCV and Stem seals... Car makes 197.4 BHP on Dynodynamics and has arround 220psi across all 4 cylinders. Only got Rings left to try...

Or get a B20 bottom end use all my JDM B18C Type R parts on it and get it mapped on Hondata S300???

Help!
 
Probably be cheaper to fit a new set of rings especially if you can remove and strip the engine yourself and b20's are not great if your fond of revving high... Other option, strip b18c and fit a set of PCT(b16b) pistons with new rings and custom tuned on your choice of EMS.
 
mr whiteman you bought a bit of a dog of an engine im thinking, if it was me prob do the rings then get hondata
 
b20 will be torquer but vtec sounds savage on the b18c, Got a mate who'son his 3rd bottom end in a year,
 
re bore the b18, set of pistons aint mega money.:p
 
b20 :p
daz will tell you they can be perfectly reliable
mine aint had no problems touch wood for the upcoming 2 years atm
 
Did you have any machine work done or anythink change in the b18 in the first place ?
 
Alot of B18s seem to use quite a bit of oil, just keep feeding her:D

My old dc2 had a full Honda service history, never smoked and made 205bhp and on a usual trackday I went through a litre of oil and that was 5w40 fully synthetic.

Have you tried using 10w40 semi synthetic yet?

If the engine is healthy and it still annoys you, as mentioned above^^a set of new oem ek9 pistons and rings would make a nice improvement! Use autodynamics-honda for them at a very good price, also the cheaper piston rings he sells are apparently just as good as oem honda and supposed to be made in the same place but are 1/2 the price
 
Were did you get your valve stem seals, there are one for inlet and ex different colours. Or you valve guide are worn as well do the lot start again with rings and pistons, be carefull when hone bores i would not do it my self...
 
matt o said:
mr whiteman you bought a bit of a dog of an engine im thinking, if it was me prob do the rings then get hondata
Click to expand...

This gets my vote too.

And get a proper crankcase evac setup while you're at it. That helps a lot since you're out there on the 'ring from time to time.

I vote nay for the PCT pistons. Big heavy piston, big monster dome...sure you get a lot more compression...but compression is also about QUALITY and not just quantity of compression.
 
whan you say b20 bottom end if your talking about teh b20z from teh crv it seems a good idea at first but once you factor in all the bits and bobs you need to get it to work it starts looking less promising, plus its not neccessarily as stable at high revs and i think tehre is an issue with running type r cams on it as things start getting very close with teh b20 pistons,,

As a warning, when the VTEC head is installed, there's not a whole lot of piston-to-valve clearance as VTEC heads have larger 33mm intake valves vs. the B20 engine's 31mm valves. If you are dyno tuning, contact will occur between the piston and valves if the cam is advanced much more than 4 degrees, so be careful. In fact this is so close it's not advisable to advance the intake cam at all.

If running larger lift and duration aftermarket cams in your B20/VTEC Frank, or if the head has been modified for higher compression by milling, the piston's valve pockets should be modified and the valve-to-piston clearance confirmed before the head is final assembled to the block. Carefully grinding the piston's valve reliefs with a die grinder with carbide burrs and polishing the result with cartridge rolls can obtain additional clearance. A minimum clearance of 0.045-inch on the intake valves and 0.055-inch on the exhaust valves is advisable.
Click to expand...


http://www.hondatuningmagazine.com/tech/0203ht_acura_honda_b_series_engine/index.html


have you concidered fitting all your b18 parts to your b16b block with new rings so in effect doing a spoon stroker kit on it? IIRC your b16b didnt burn much oil at all?,,
 
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RagingAngel said:
This gets my vote too.

And get a proper crankcase evac setup while you're at it. That helps a lot since you're out there on the 'ring from time to time.

I vote nay for the PCT pistons. Big heavy piston, big monster dome...sure you get a lot more compression...but compression is also about QUALITY and not just quantity of compression.
Click to expand...

This gets my vote too! It would be the perfect set up for what you enjoy doing!:bow:
 
olly ek9 said:
have you concidered fitting all your b18 parts to your b16b block with new rings so in effect doing a spoon stroker kit on it? IIRC your b16b didnt burn much oil at all?,,
Click to expand...

thats a good idea.
 
if cash was no object would say brian crower stroke the b18 :p but back on planet normal go for rebuilding the 16 with the 18 parts man :nice:
 
What oil are you using? It has to be 10W40 semi. Thats what Honda says and thats what I put in my B16B and it doesnt use a drop
 
My vote goes to the B18 rebuild. It's a tried and tested engine with massive reliability records, if this was for drag racing or competition use it might be worth going B20 for a few tenths of a second gain, but for trackdays which are effectivley 'open class' I'd rather go with the cheaper, easier, more reliable and more rev' hungry alternative.
 
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