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Old 04-23-2008, 09:55 PM   #11
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I hear there is a 3 stage vtec engine made in Japan that was called D15B. It was basically a hybrid of our vtec-e (like in the D15Z1) and the vtec that is found in the D16Z6. Are these engines just the Japanese D15Z1?
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Old 04-23-2008, 11:44 PM   #12
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the 3.stage resembles more the usdm d16y8/y5 motors
it doesn't have the small intake and head chambers or deep dish pistons.
it also doesn't get the same gas mileage as the d15z1
and it has a much higher total output power
there are very few similarities...
actually i think there is only one identical part used on the whole motor.
the p07 rods
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Old 04-25-2008, 08:30 AM   #13
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What kind of mpg differences would you see in one of the JDM motors as opposed to a D15Z1?

If I'm understanding correctly... they have lean burn at lower/cruising RPMs, vtec for top-end power, but the lean burn mode isn't as efficient as a D15Z1. Sounds like an interesting compromise, if the losses in mpg aren't too great.

Can some parts be swapped from the 'Z1 to make it more VX-like?

Ok, 3rd question. Is the D15Z1 also available as a low-mileage import?
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Old 04-25-2008, 01:09 PM   #14
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The d15z1 is called a d15b in japan (which is the same name as the normal vtec model as well) but the vtec-e model is the same as our d15z1.
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Old 07-17-2008, 06:44 PM   #15
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I've never dropped a motor in myself. Can anyone give me a ball park number to how much it would cost me to have a mechanic install it.
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Old 07-18-2008, 05:40 AM   #16
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Hey I would love to get my hands on one, I live in Long Beach and just moved from San Diego. How much for an a D15z1 (is that what it is or is the 3 stage vtec, I only want the regular vtec-E D15z1)? What comes with? flywheel, ecu, tranny, A/C??? anything I could buy extra?
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Old 07-18-2008, 11:21 PM   #17
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http://www.nippon-motors.com/honda.htm your in luck! they deliver FREE to socal from what I know this is a very reputable site.
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Old 07-19-2008, 12:17 AM   #18
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Guys beware!! If your from the USA don't even bother buying this motor from Canada. I friend of mine bought a Supra 2JZ Twin Turbo motor from them on eBay and it turns out when he got the motor it was bad. He called them and told them they sent him a bad motor and they said too bad. He tried filing a dispute for the charge with his credit card but lost the dispute since they are from Canada.

So buyers if your buying from this vendor beware.
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Old 07-19-2008, 09:29 AM   #19
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I bought one of the D15B engine/manual trans from JDMSource, and have been very happy with it.

Some side notes:
1. DOES NOT get same FE as the D15z1...I get 40-45mpg if I'm careful.
2. Rated @130HP, 7K redline, great fun when the VTEC kicks in!
3. I replaced my ECU with the PO8.
4. Need to replace the 5wire O2 sensor with a 4wire...haven't got to it yet.
5. All the sensor wires were cut on the engine I received. Would be nice if they'd unplugged them and left the harness intact.
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Old 07-19-2008, 10:06 AM   #20
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Quote:
Originally Posted by 4bfox View Post
I bought one of the D15B engine/manual trans from JDMSource, and have been very happy with it.

Some side notes:
1. DOES NOT get same FE as the D15z1...I get 40-45mpg if I'm careful.
2. Rated @130HP, 7K redline, great fun when the VTEC kicks in!
3. I replaced my ECU with the PO8.
4. Need to replace the 5wire O2 sensor with a 4wire...haven't got to it yet.
5. All the sensor wires were cut on the engine I received. Would be nice if they'd unplugged them and left the harness intact.
40-45 is still pretty good, with a cx or vx trans i wouldnt be suprised if you saw closer to 50
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