AgentMurdoc

Well, while I'm trying to piece together my turbo kit for my REX, I figured that I might as well make something out of my hatch. Not planning on doing too much to it, probably just port n polish the head and get a 3 angle job. So with that in place, here's my question...

What exactly is the difference between the single cam ZC and the D16A6? I know that the ZC puts out more horsies, but is that because of the head? Or are the internals also a factor?

Also an opinion question here, do you guys think it's worth it to get the single cam ZC and do the port n polish and 3 angle, or should I just stick with my A6?

Lemme know what you guys think.

Thanks.

ProzacOverdose

jdm motors are not rated in hp like usdm motors. thats why that are a little higher then ours. but the zc sohc is exactly the same as a d16a6. just like the 1.6 zc sohc vtec is the same as the d16z6. port and polish the head....it'll be more then dropping the same motor..rite? rite.

AgentMurdoc

Please correct me if I'm wrong, but aren't the JDM sohc ZC pushing like 125-130 hp? While the D16A6 is only pushing about 108?

So with that in mind, if my info is correct, and ProzacOverdose you say that they are identical, how could the JDM Sohc ZC be completely identical to the D16A6 and put out a nice amount of horsies more?

About the port n polishing and the 3 angle, I'm trying to decide which motor I should do it to where I'd get more bang for my buck.

Thanks.

HMT-Admin

it is rumored that the difference is made up in pistons (compression) so that would be why the SOHC ZC is rated at 115-118hp. I also belive that JDM ecu chipping is a factor as well in the output.

So they are pretty much the same thing.

Jeff

ProzacOverdose

those 2 motors are very close.....hp ratings has been printed a million times so things often get overlooked. I'll try to find the link...just for the sake of all the users who wants to know.....but ratings are off in jdm spec. there are differenes...also in the comp, octane, ecu, all kinds of factors. ill respond as soon as I find the info.

shortyz

save the 500$ you would spend on the zc and turbo the a6.. much cheaper and just as fast

AgentMurdoc

Ahhhh... you make a good point (AbaZ and ProzacOverdose) I never thought about the octane difference from here and Japan. And the different ecu's slipped my mind too (and we all chip our ecu's to the jap spec (Mugen, etc.) why, cause of the better fuel curve and higher rpm limit, so that our A6's put out some more ponies).

Now that makes a whole lotta sense, you guys may have just saved me some money . I wish I had cash to blow, I'd drop in a stock Zc into my hatch and dyno it, see how many horsies it pushes compared to the D16A6, but unfortunately I don't. But if someone out there does help us settle this once and for all.

Well here goes me thinking again, I also read somewhere that the rods and pistons out of the ZC are a little beefier than the A6? Now is this true or is this just another myth?

Oh and shortyz, I'd only be spending more or less $250 on a single cam ZC. Not that great, but isn't $500. A buddy also claims that he could get a Sohc ZC for $150, not sure, but if he can.... HEY! And about the turbo I'm planning on dropping that into my REX. Vrrrrrrrrrrrrr.........PSSSSSST......Vrrrrrrrr

::drools:: I yearn for that PSSSSST!

ProzacOverdose

damit, I cant find the link. im not gonna stop till I find it. but yes, well, according to reading. i've used the zc pistons and rods in my motor before this on rite now that im boosting. theres no diff.in the look, size, shape of the rods. its exactly the same except it didnt have nipples on the side of the rods. the pistons were a diff story. you can tell rite off the bat the dome. it looks like a 2mm dome w/ small valve reliefs. the oil ring was moved a little lower and the skirt got the type r treatment being longer, more narrow. theres also oil cooling holes on the underside of the pistons that some sohc dont have. but there has been discussions on the pistons being too light due to the casting, so people started using weighted wrist pins cause teh longer, lighter skirts also will cause it to bottle neck.( read up on the type r pistons and see) so people started to coat it too. but thats only my 2 cents. great pist/rod ratio. had it on my jdm zc vtec motor with a head work and did 13.7 compression ratio. will be back

AgentMurdoc

Hehehe, very persistant, thanks for looking for the info, but don't keep yourself up all night though. From what you're (ProzacOverdose) telling me I might skip out on the ZC. But if I could find one for cheap, that's different . Also Prozac, I noticted on your profile you are in OC, are you a swapper for hire? Cause I don't really do work myself (no real space, tools, and more importantly, knowledge) so I'm always on the look out for some, more or less, cheap quality labor . Lemme know.

Thanks
-Murdoc-

angelboi

The sohc zc engine vin # is d16a/zc and the soch si (non-vtec) motor is d16a6....they are the same in everything...just the dual sc are a bit higher in compression and has a higher horspower head..other than that the soch zc and d16a6 are the same, seen the both of the engines with horspower ratings on all the engines i mention...