B18a1 pistons STOCK vs. FoRGED

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12-06-2006, 05:11 PM

#11

ghettoturbo

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Re: B18a1 pistons STOCK vs. FoRGED

Quote:

Originally Posted by IowaTCoupe

Vitara pistons come in 75 and 76mm for sure. I had a set for my D16z6 build.. until the machine shop discovered a crack, and i had to junk the block.

There are many Honda's using Vitara SUV pistons~ Check it out, there's quite a few using the pistons on turbod16.com because the Suzuki vitara is a 1.6L engine also.

But what happens to the stock pistons? they crack and break up? the intake relief area's melt down? They melt holes right through the middle

How much power CAN they take? (stock b18 pistons)
What are my options for aftermarket pistons?

i know people use vitara pistons in d16s because they share the same bore...you wrote it in your first post like vitara was a piston company lol

12-06-2006, 05:21 PM

#12

absolutezroo

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Re: B18a1 pistons STOCK vs. FoRGED

Quote:

Originally Posted by Racintweek

power kills rods
a bad tune melts pistons

Exactly.

12-06-2006, 05:28 PM

#13

Xgenturbo

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Re: B18a1 pistons STOCK vs. FoRGED

Quote:

Originally Posted by IowaTCoupe

Edit: Meant for PM not post reply :1

and in reply to other guy above... nope, i have no idea what i'm doing with 400whp... i have no idea how to tune either? (Sarcasm) i just taught the guy who owned the dyno and "rebuilds" hondas.

Just want to know the limits of the stock pistons, because the Vitara cast pistons in the D series have pushed over 400hp... and i'm ignorant to the B pistons tolerances.

Well let me put it this way, a guy I know is making 334whp on his stock B16 with a good dyno tune. how long will it hold that power? well if the timing stays the same and the tune stays the same then the only thing that can go wrong is the rods wont be able to hold the power and eventually weaken and snap.

EDIT:
You come on here asking how much power a stock piston will handle, meaning you want more than 200~250whp, in this case why not just dish out the extra $300 and get forged pistons? just a logical thought.

12-06-2006, 06:12 PM

#14

Slo_crx1

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Re: B18a1 pistons STOCK vs. FoRGED

Detonation is the biggest killer on any Honda cast piston...even the b-series ones. Your ringlands will be the first things to go (they still sit high just like the d-series ones do), and if the combustion chamber temps get hot enough, it will start to melt them. I've nuked a couple of b18 pistons on conservative setups, one was due to shitty fuel and started pinging, and I'm pretty sure the others just saw too much heat from too small/inefficient turbo setups. If you're one the road to 400+hp, then stock cast pistons is not the vehicle to get you there.

12-06-2006, 06:45 PM

#15

IowaTCoupe

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Re: B18a1 pistons STOCK vs. FoRGED

I'm debating if i can go stock pistons only because im broke, and It's 3 weeks before xmas~~~ Can't spend too much $ on myself...

Hypothetical situation:
I have tuner toy H rods, or Eagle H beams...
Stock B18 pistons (9.7:1 C/R

)
Felpro (stock) headgasket, so i'm not lowering c/r or double decking the headgasket
running 20psi tuned right... no detonation... with 93 octane

Would the pistons hold? I'm more worried about the Rods... i'm 90% sure i'm goin w/ TT rods for $225.

Will i be a first to push the limits of stock pistons? (w/ H beam rods)?

Cliff Notes: Although it's not advisable to push stock pistons, has anyone done it, and what did they handle? what are they still running?

12-06-2006, 09:05 PM

#16

absolutezroo

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Re: B18a1 pistons STOCK vs. FoRGED

if you can keep heat and detonationi under control the stockers might sufice.

12-06-2006, 09:06 PM

#17

ghettoturbo

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Re: B18a1 pistons STOCK vs. FoRGED

you will ---- those pistons up before the stock rods most likely...you wont be the first to push the limits of the pistons by using tt rods with them since many of us have cracked stock pistons before breaking/bending a rod. so either leave the internals alone and push the stock ---- or just do the whole thing

12-06-2006, 09:12 PM

#18

EG-prince

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Join Date: Oct 2005

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Re: B18a1 pistons STOCK vs. FoRGED

even besides the stock pistons holding, the rings and ringlands are very likely to let loose at that high of cylinder pressures. haha but thats coming from the guy trying to sell you pistons and rings