TravisCadello

is the JDM block stronger or better or whats the differences in blocks?

hannslebo

D15b

TravisCadello

How? whats changed in them?

hannslebo

well i read the question wrong i thought you were asking which one would i take...sorry for the misteak!! but here are some specs on both.
i do belive that the JDM motors are stronger....dont quot me tho!!

D15B
Found in :
1991-1999 Honda Civic VTi EG4 (Japanese Market)
1992-1998 Honda CRX VXi EG1 (Japanese Market)
Displacement : 1,493 cc (91.1 cu in)
Bore and Stroke : 75 mm × 84.5 mm (3.0 in × 3.3 in)
Rod Length : 137 mm
Rod/Stroke : 1.62
Compression : 9.6:1
Power : 130 hp (96.9 kW, 132 ps) @ 6800 rpm
Torque : 103 ft·lbf (14.1 kg/m, 138 Nm) @ 5200 rpm
Redline : 7200 rpm
Fuel Cut : 7411 rpm
Valvetrain : SOHC VTEC (4 valves per cylinder)
VTEC Switchover : 4200 rpm
Head Code : P08
Piston Code: P08-010
Fuel Control : OBD-1 MPFI



D15B7
1992-1995 Honda Civic CX (Canadian model)
1992-1995 Honda Civic DX/LX
1993-1995 Honda Civic del Sol S
1992-1995 Honda Civic LSi Coupe (European Market)
Displacement : 1,493 cc (91.1 cu in)
Bore and Stroke : 75 mm × 84.5 mm (3.0 in × 3.3 in)
Compression : 9.2:1
Power : 102 hp (76.1 kW, 103 ps) @ 6200 rpm
Torque : 98 ft·lbf (13.5 kg/m, 133 Nm) @ 3800 rpm
Valvetrain : SOHC (4 valves per cylinder)
Piston Code : PM3
Fuel Control : OBD-1 MPFI
ECU: P06

Smash03

Basically,
D15B - vtec
D15B7 - nonvtec

CivicSpoon

Internally they are very different; different heads, different crankshafts, different pistons, different rods. The D15B might be "better" in the sense that there are far more aftermarket parts available. Try searching for aftermarket connecting rods for D15B7, and then try searching for rods for the D15B. Since the D15B shares the same rods as the D16Z6, there are more options available.

TravisCadello

Ok, i know the head is better but the internals of the block only. compared to the b7 and z6?

Oh ****, and the PM3 pistons are d15b7's only? because when i had the head off it had pm3 pistons. does this mean its not JDM pistons?

cashkeith

d15b has 130hp and d15b7 has 102hp and non vtec

TravisCadello

Look, I'm not asking power because my set up is WAAY different than the dam full D15B setup. Its running a Y8 head and p28 ecu.

My reason asking is because i wanna know if I'm safe when I'm doing 7750RPM shifts, I felt safe with the Z6 block but im aware this one is a little different i need to know if the internals can take high rpms or not.


Crank,Rod,Piston,wrist pin, rod bearings, oil pump everything beneath the head! thanks.

TravisCadello

bump?

24TEN

iTrader: (2)

If I'm not mistaken, there are also D15B blocks that are literally the same as a D15B7. I had a replacement motor in my EF when I first got it. It was stamped D15B but it too had PM3 pistons in it.

sicksol93

I have a D15B swap in my del sol si, with a t3/t4 turbo, pushing 10lbs of boost with stock internals. I definatlly can't complain.

TravisCadello

isn't that weird? why would it have usdm pistons? and did you get your from japan?

24TEN

iTrader: (2)

Yes it was a replacement motor from Japan.

honda.lioness

Reinforcing those who indicate they know that there is both a JDM D15B vtec and a JDM D15B non-vtec. The non-vtec block and head are similar or identical to the USDM D15B7. See for example http://www.cr-x.org/home/jdmspecs.html , http://www.honda.co.jp/HOT/ModelData...09b/mx_sy.html (google for a Japanese to English translator, though most of the numbers need no translation), and http://honda.lioness.googlepages.com...15benginenotes

Travis, why is it you think PM3 pistons are only USDM? I do not think this is so.

TravisCadello

it not that i think that, but people had told me that. so their are JDM pm3 pistons. hmm so its still a good block i guess.

sako peelo

Hi guys,

I have a 92 Del Sol running on a VTEC D15B JDM motor and i have been searching rebuild kits on ebay for upgrading to forged pistons and rings etc. however most of the rebuild kits are not compatible with the "JDM" D15b VTEC.

According to other blogs, researched that if there is no number on the engine ID (i.e. D15b1 D15b2 D15b7 .....) the engine is Japanese If I am not wrong?

So i need to know which one of the USDM rebuild kit would be compatible to the JDM D15b ?

NotARaCist

iTrader: (1)

6 year old thread

Besides, you already have your own thread. You didn't need to necro this one.

Former User

Old thread locked.