d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
03-17-2015, 06:55 PM
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d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Swapped out blown up d16y8 out of 99 civic ex and dropped a d15b 3 stage VTEC into it. Put y8 dizzy and intake manifold on d15b. Swapped vtec as well. Changed map sensor and the other throttle body sensor. Having a issue with bogging when you take off . Car idles fine. Runs fine. Now that my brother has unplugged and plugged things around to try and figure it out now it acts like it isn't sparking and will only turn over. D15b did not come with ecu . My civic is automatic . I think the JDM motor may come out of a manual. Had to change flywheels as well. Need help figuring this out. Will I need a ecu for the new motor or what?
03-17-2015, 07:35 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
You use a d15b 3stage for its main purpose, not try and turn it into a d16y8. It doesn't work that way. The head on both of these engines are ran differently.
03-17-2015, 08:17 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Any idea on how to wire that to my harness?
Also in the process of pulling plugs and stuff. A few times the car kept running after cutting key off. And had some really bad idles here and there. Could that affect the timing any?
Also in the process of pulling plugs and stuff. A few times the car kept running after cutting key off. And had some really bad idles here and there. Could that affect the timing any?
03-18-2015, 10:15 AM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
No you need the P2J ECU, the dual vtec solenoids, and you will need a manual transmission as the automatic transmission ECU's on the 6th gen are not swappable.
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03-18-2015, 06:35 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Car runs and shifts but its having fuel issues. Like it bogs when you hit the gas and sometimes cranks after cutting the key on and off. That is the only issue it has. Everything els is fine
03-18-2015, 09:03 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Swapping the ecu to the P2J that runs the motor well, the transmission won't operate. Either way, something will be amiss.
But you know what, you want to kill a darn good motor by trying to run it as a d16y8.... more power to you. Loss of a fine piece of technology (D15B 3 stage).
Why in the world you'd spend 900 bucks on the jdm motor instead of buying another used D16Y8 is beyond me. I guess that's too simple for your desires.
To do it properly, you have two choices, stick to your transmission and drop a D16Y8 in there or get the proper ECU and a manual transmission for the D15B.
As far as I know Hondata won't operate the automatic transmission. Nor will AEM EMS.
03-18-2015, 10:03 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Being that the car is not paid off my parents decides to buy the JDM motor instead. So I'm stuck with it and the people told us it was straight hook up. So far its been nothing but an issue . If it was me I would of already bought a motor to fit that worked with the automatic even if I had to change ecu and harness . But I guess they done screwed there self over on the car
03-19-2015, 02:31 AM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
With your current configuration it will not run correctly as said above. There's no fix, either get another Y8 or learn to live with the way it runs.
03-19-2015, 06:32 AM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Being that the car is not paid off my parents decides to buy the JDM motor instead. So I'm stuck with it and the people told us it was straight hook up. So far its been nothing but an issue . If it was me I would of already bought a motor to fit that worked with the automatic even if I had to change ecu and harness . But I guess they done screwed there self over on the car
03-19-2015, 10:32 AM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
OK so straight up opinion. If we took this motor back which other JDM motor could we ask for that would work in my car with my tranny? I'm not wanting speed or any performance , just something to drive to and from work
03-19-2015, 10:39 AM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
If this is your parents car than straight up swap the same engine. I doubt they will let you return it but you can try. The purchase was not there fault.
03-19-2015, 02:21 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
They are gunna give us money back for it. Do a d16a will bolt right up to the trans and harness in my car?
03-19-2015, 06:37 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Lol we aren't the smartest people. Just wanna fix it with another motor that's easy to find
03-19-2015, 06:48 PM
#20
Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Yeah that's what HondaPartsHero was eluding at is the JDM D16A will work with your transmission and ECU as will the JDM SOHC ZC motor. Both I believe are vtec and will be quite similiar to your D16Y8. HondaPartsHero is quite versed in Honda's. I would trust his judgement.
I would likely keep your fual rail and injectors from your blown y8. I'd also compare the intake manifolds between the two and see what differs if anything. And also compare the throttle bodies. You may find swapping the whole Y8 intake system to the JDM motor is your easiest solution for your ECU and Wire Harness compatability.
I suspect your folks are set on a JDM replacement as the importers promise is that it's a low mileage engine.
Just so you know, that's not guaranteed. It's more probable due to the laws in Japan but it's still possible that the JDM engine is a high mileage engine.
As you just found out the importers will say next to anything for a sale, like them claiming the 3 stage D15B will be a direct swap replacement of your D16Y8.
Your easiest solution is to buy another D16Y8 but...... Finding one that is low mileage will be quite difficult.
Your odds are probably higher on finding a solid JDM D16A engine that will more likely be a lower mileage engine in comparisons to the D16Y8 pickings.
I would likely keep your fual rail and injectors from your blown y8. I'd also compare the intake manifolds between the two and see what differs if anything. And also compare the throttle bodies. You may find swapping the whole Y8 intake system to the JDM motor is your easiest solution for your ECU and Wire Harness compatability.
I suspect your folks are set on a JDM replacement as the importers promise is that it's a low mileage engine.
Just so you know, that's not guaranteed. It's more probable due to the laws in Japan but it's still possible that the JDM engine is a high mileage engine.
As you just found out the importers will say next to anything for a sale, like them claiming the 3 stage D15B will be a direct swap replacement of your D16Y8.
Your easiest solution is to buy another D16Y8 but...... Finding one that is low mileage will be quite difficult.
Your odds are probably higher on finding a solid JDM D16A engine that will more likely be a lower mileage engine in comparisons to the D16Y8 pickings.
03-19-2015, 06:53 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Thank you. When we go to take it back I will surely ask them for those 2 to see if they have either one. I will post back when we get it running. We are clueless on this kinda stuff so this is very helpful. Again thank you for the help
04-19-2015, 05:11 PM
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Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
Update on the motor issue. They have now bought a d16z6 manual trans, VTEC and I think its obd1. From what I have looked for you can take a y8 head and put it on z6 block. Being said that my brother has decided to change intakes and the pipe that runs under the intake and has a bunch of hoses on one in and the other in goes in the block (Forgot what its called) . So the y8 dizzy won't mount to the z6 head. So he has choose to degut both dizzy to change the casing on them. From what we are doing will this work?
04-19-2015, 05:24 PM
#25
Re: d16y8 vtec motor from 99 civic ex swap to d15b 3 stage vtec jdm motor
How the hell is a 16 year old car with a blown motor "not paid off"? Why are you jumping through all of these stupid hoops, instead of just doing it the right way, the first time? All of this dumb **** could have been completely avoided if you had just bought a replacement Y8. Hint: If you want your autotragic to work correctly, you need to use an autotragic Y8.
Stop trying to cut stupid corners, and do it right. Every time you do something different, you're only getting further and further away from actually fixing the car.
Stop trying to cut stupid corners, and do it right. Every time you do something different, you're only getting further and further away from actually fixing the car.