D15b Vti Swap

[Dumped91Hatch]

Then why do they say always use the year and head when purchasing the belt for a Mini Me swap Be it 1.5 or 1.6?

[kdog]

all I know is that a VX belt fit....so I assumed it was because the bottom end was most like a VX block...the d15z1

[NightWalker17]

so ya i havent been on here for some time now. and im starting to learn so much about this motor as in the JBM d15b. so ya. i could really use some more input as in where i can get the parts for this type of motor i mean for the head the thing is im going to bore it out to a 1.6 and then im going to run a crap load of NOS on it and see what happens so if you have any ideas it would be cool if you could tell me

[4GZChatch]

OK, here's the deal with the JDM D15B VTEC. It is basically the same head as the D16Z6 on a 1.5L block. It is meant to be a high-revving little engine, and is happy to spin at 8K rpm. It has a different rod/stroke ratio than the other D15's, so if you want to run a ton of N2O on it, your only real option for strengthening the rods is shot-peening or cryo treating. You can use any D-series piston with it, and you should have no problem getting it up to 1.6L.

When you do the swap, the only thing you'll have to worry about is using the oil pressure sensor off your stock block and putting it in the new block (the hole is there, just plugged up) and figuring out how to run VTEC.

If you want one of these motors, and depending on where you live, I can get you the engine for as low as $510 shipped, and can get the pistons and cryo/shot-peening done too, if you want. It would be up to you to crack open the motor and remove the pistons/rods, unless you want to pay double shipping. I have installed several of this motor, and really like the way it drives. It has plenty of guts and pulls the 4g civics/crx's nicely. Email me at [email protected] if you have more questions, or hit me up on MSN messenger, my username is [email protected].

[pisetup]

Originally Posted by kdog

all trannys 89 and up, not 88 because of spline differences, will fit.

So let me get this straight, my 1988 Honda CRX transmission WILL NOT fit the JDM D15B??? Can anyone confirm this? I'm buying this motor in Feb or Mar and need as much info. as possible.

[4GZChatch]

The 88's have a different number of splines on the input shaft to the trans, but if you use the 88 flywheel and clutch, along with the 88 hubs/knuckles, you should have no problems. You may be able to do a search for it on here, but I'm pretty sure that's the situation. The trans should work fine, since all of the D-series motors should line right up. You just have to stick to the 88 clutch/flywheel/trans combo. I'll try to find more info on that...

[Dumped91Hatch]

You don't necessarily have to use the 88 axles and hubs. I'm runing an 88 dx tranny with 91 std original axles and hubs. You just have to use the imput shafts that the axle slide into from the year axles you have.

[DrunkenTiger84]

i have a d15b but its but its not running right. i swapped it into a 96 hatch which is obd-2 with ex ecu. the problem is thers no vtec and it cuts off at 6k and sucking alot of gas. can someone help me please

[4GZChatch]

Did you put on the obd2 oil pump? The obd2 motors have a crank angle sensor on the oil pump, and it won't run right if that's not connected, also, are you using the obd2 injectors and dist? Those could throw things off as well. I would suspect that your problems are obd-related.

[pisetup]

Maybe you should use the ECU that originally ran the motor...and I think the D15B is obd1.

[4GZChatch]

Yes, you would need to either convert your car and ecu over to obd1 to match the motor, or convert the motor over to obd2 to match the car. It should run right either way, but you'll have to make sure it is entirely swapped to the obd level you desire. Also, you need to use the obd2 injectors out of your original motor, if you are keeping obd2. If you left in the injectors that came in the d15b when you put in the motor, you'll have problems. You should also be using the right obd level of distributor.