Hey everyone! I have is just purchased a 2000 Honda Civic Si with a 5 speed and the motor is knocking. It still runs but there is a loud knocking sound coming from it and a mechanic told the people i got it from that the motor was shot. So my question is I have a d16y8 engine from a 1999 honda civic si automatic and the intake manifold has a different plug on it im assuming because it was an automatic. So will i be able to put the head from the knocking motor on the automatic block and put my 5 speed tranny on it? Please ask if that doesnt make sense and i will try to explain better or if you need any more info. Any in put would be greatly appreciated. Thx.

 

Yes you can do that. Basically change out the block. I think the heads are the same once you take the manifolds off so if you know the other engine is good, use both the block and the head as a unit.

Take the automatic transmission off and unbolt the flex plate from the motor that has automatic, you can then bolt the flywheel for a manual onto the end of the crank. The starters are different, so make sure to put your manual starter on.

 

would i bet better off (or easier)to just put the intake manifold from the knocking motor and put it on the automatic instead of the whole head?

 

the reason i ask is because i just tried to put the 99 automatic motor in my 97 si and it isnt working properly. Seems like it getting to much fuel. White smoke and strong fuel smell from the exhaust. I heard this motor running prior to buying it and it worked perfectly. the only thing i did to it was put the intake manifold from my 97 and put it on and switched it to a manual. and then i read that you can put a intake manifild from a 97 and put it on a 99 so im hoping if i put the automatic from the 99 in the 2000 i have with the manifold from the 2000 it will work without this misfire/smoking/too much fuel thing i have going on. not sure it that makes any sense to you or not

 

The manifolds changed in 1998. If you have a 1999 motor going into a 2000 car it should work to just attach the 2000 manifold to the 1999 head.

The difference is mostly that the later ones have a small air hole leading back to each fuel injector. When you take the 2000 apart inspect both it's and the 1999 manifold to be sure they are the same in that area.

If you have a bad intake manifold gasket or an improper fit between the manifold and head, it may be sucking coolant out of the water passage by cylinder #4, which will make a lot of white smoke.

 

thanks for the input. im going to try and get both motor swaps don this week. i will let you know how it works out. wish me luck lol. thanks again.