Rod difference D16Y7 vs. D16Y8
 

before I begin let me say I already searched but couldn't find anything helpfull.....I wanted to know the difference between the D16Y7 bottom end vs the D16Y8 bottom end besides the oil squirters on the EX motor, is there any other difference in the bottom end? like rod strength? THANKS!!!

Re:Rod difference D16Y7 vs. D16Y8
 

I don't think there is, I think they're even the same part numbers... I'm pretty sure the connecting rods, bearings, and crank are identical. I think just the casting of the engine is different (to compensate for the knock sensor, and VTEC)
The pistons must be different because of the compression difference between the two motors.

Re:Rod difference D16Y7 vs. D16Y8
 

thanks for the reply...So I was thinking if they have the same rods and the Dx engine has lower compression wouldn't the Dx last longer under boost with proper fuel/spark of course?

Re:Rod difference D16Y7 vs. D16Y8
 

Bump...

Re:Rod difference D16Y7 vs. D16Y8
 

D15's have a Differnt Stroke than a D16 (shorter) , So the wrist pin location on the piston will sit differently, so lets say a 9.1 c/r dx piston was put into a d16, it may go up in compresson, Dx pistons normally have flat top style pistons. I wouldnt even be ------- around with stock cast pistons, and swapping them from used motors into yours. If you are worried about your compression being high on your d16, I really wouldnt worry about it at all.. You can easily boost GSR's B16a's that all have unfriendly Compression levels.

Jeff

Re:Rod difference D16Y7 vs. D16Y8
 

Thanks for the reply but I am talking about my 99 DX (D16Y7) not the older D15s.
Here's what I wanna do....get the Greddy kit, mainly because the ex man. is far superior to the STD or HF, convert the little mitsu turbo to oil/water cooled...if possible, I don't know if the CHRA has coolant passages (anyone?) then get a D16Y8 intake manifold simply because my current manifold has NO plenum, then get a custom APEXi frontmount and for fuel management use my AFC and DSM injectors (450cc) and an MSD 6BTM to retard the timing if neccessary. Do I need a fuel pump too? anyone know of anything else i'll need? THANKS, i'm looking forward to boosting once again...

Re:Rod difference D16Y7 vs. D16Y8
 

lol, did you just say the greddy sohc kit is "far superior to the STD or HF"

hah, buddy, the Greddy kit is ------- weak, its a basic cast iron manifold, just like the hf/std manifold. The kit comes with a small ass turbo. The downpipe is undersized. All the charge pipes are small, and doesnt include bov/intercooler or any type of real engine management.. (doesnt that sound great for 1500?) Your better off making a nice kit for 1200 bucks, and then finish up with the rest of the stuff you have planned.

Jeff

Re:Rod difference D16Y7 vs. D16Y8
 

The SOHC GReddy kit is still a great turbo kit. The only thing that I do not like about it is the godddaym price! I'm a cheap bastard ;D. The manifold is not all that man. I agree with Abaz about that. If I only knew then what I know now, I would've gone custom.

If you want a typical easy to find custom turbo, try a T-25, TD05, or T3. Also, keep in mind that the AFC hack can only boost about 10-12 max. Go to my website to get more info on the Hack and DSM injectors.

Re:Rod difference D16Y7 vs. D16Y8
 

I only said the Greddy exhaust manifold is superior to the STD or HF manifold....not the overall kit....take it easy. It has a better design(better than a log and better than the smaller port HF and STD) and since I'm keeping my internals stock, I'm only looking for the 15g not too much more.....I am also thinking about running a 14b because it would be more efficient at the same boost level.....I plan on running 6-7psi out of the 14b or 15g anyone have compressor maps for either of these? will I need a fuel pump with this setup (AFC,450cc,6-7psi)? to think i could have gotten the turbo and injectors off my totalled 90 GSX...damn

Re:Rod difference D16Y7 vs. D16Y8
 

Another disadvantage with the "GREDDY" manifold, you can only use "GREDDY" turbos, or turbos that have the JDM T25 flange. (rare)

T3's and DSM (14b/t25) Turbos do not bolt to them.

Jeff