What are internal differences between USDM B20B and USDM B20Z ?
07-15-2002, 07:58 AM
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What are internal differences between USDM B20B and USDM B20Z ?
Hey guys,
What are the differences between these 2 engines? Is it the pistons and head-gasket?
Thanks!
What are the differences between these 2 engines? Is it the pistons and head-gasket?
Thanks!
07-15-2002, 09:20 AM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (DevinW)
The B20Z has higher comp pistons, not sure what else is different. I think theres like a 5-10hp differnce btw the b20z and b20b.
07-15-2002, 09:46 AM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (DevinW)
It is the pistons.
b20b= 97-98 126hp @ 5400 rpm
133 ft-lbs (18.4 Kg-M) @ 4300
8.8:1 CR
b20z=99-00 146hp @ 6200 rpm
133 ft-lbs (18.4 Kg-M) @ 4500
9.6:1 CR
b20b= 97-98 126hp @ 5400 rpm
133 ft-lbs (18.4 Kg-M) @ 4300
8.8:1 CR
b20z=99-00 146hp @ 6200 rpm
133 ft-lbs (18.4 Kg-M) @ 4500
9.6:1 CR
07-15-2002, 04:39 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (Jedi Master)
So it's only the pistons? What about a knock sensor?...I thought the Z had one.
07-15-2002, 04:43 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (DevinW)
yes the b20z has the knock. and the intake mani. are diff. giraffe style ls on b and more ls like with doomahicky chamber on z.
07-15-2002, 05:27 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (DevinW)
So if I were to get a USDM B20B with Z pistons and headgasket, it would be somewhat equivalent to the B20Z? Sorry for all these dumb questions, but the only B20 engines I can find locally are B20Bs....my goals are to build the b20 N/A non-vtec.
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07-15-2002, 08:18 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (Jedi Master)
JDM b20b's are the same compression as the USDM b20z's.
anyways,
Devin, the way it looks is that there is 0.8 compression points difference between the B20Z and B20B, so not much really.
the Z also has a knock sensor - but WOW!
so,
the only REAL diference is the intake manifolds
ie the big ugly one on the B20B and hte smallish LS one on hte B20Z,
this is where differences in the Honda factory power figures come from.
once the intake is swapped, eg an LS one, both the engines are fairly similar in power output.
personally, i gave up wasting my time chasing a B20Z and got a JDM B20B (which has hte low compression p3f marked pistons BTW)
the differences in performance due to the CR is soooooo minimal that it will be inconsequental once you start modding hte engine...
i hope this helps,
t..
07-16-2002, 10:44 AM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (tinkerbell)
JDM b20b's are the same compression as the USDM b20z's.
man, they are sooooo not!
man, they are sooooo not!
07-16-2002, 11:39 AM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (Jedi Master)
JDM B20B is 9.6:1. Which is what I have. The piston is more "flatter" and not curved like the USDM B20B.
07-19-2002, 01:59 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (blufke)
97-98 its 9:1 and 99-00 its 9:6.
I checked it out on the honda manual. aka dealership version.
I checked it out on the honda manual. aka dealership version.
07-19-2002, 02:50 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (Civicdrgrcr)
I have a 96 JDM B20b and this motor came with the LS looking manifold on it. Have you seen one of these before?
07-21-2002, 03:53 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (blufke)
.8 pts is a huge difference.
ive seen a few B20Z and B20B dyno graphs and they look rather similar...
ie. not huge
t..
07-21-2002, 06:59 PM
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Re: What are internal differences between USDM B20B and USDM B20Z ? (BG Boost)
JDM B20B is 9.6:1. Which is what I have. The piston is more "flatter" and not curved like the USDM B20B.
any pictures?
t..
09-26-2011, 02:33 AM
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Re: What are internal differences between USDM B20B and USDM B20Z ?
can anyone help me to get a good b20b ? i hav option to get 1 b20b from 4 engines so there are tow kind of b20b ,one is with long intake P8R and other is low intake P75...all are b20b's so plz let me know wich 1 is the best 1 for my 98 civic......plz help.......thnx
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