Question about D15 & D16 Vtec motors

[import_convert]

What are the main and minor differances between the D15 & D16 Vtec motors. Be cause i see the D15 and the D16 vtec motors have the same amount of HP. So i'm thinking ok no big same motor but yet i ask my friends which one they would choose they say the D16Y8 and i'm like ok whats the big deal? Same ish u know. :?:

[transzex]

Y7/Y8's have been having oiling problems on the cranks.

The blocks are different between the D15 and D16's

[S Q A D]

you've said that before ... what problems are you talking about ?? ive never heard of these oiling problems with the crank ? ... not saying they dont exist ... just trying to understand what happens? :?: :hijacked: <-- sorry

[DOG]

Do a search on rod failure and you will see most of them are D16y8. The head is a nice piece along with the intake manifold. Ill stick with the D15 bottom end.

[Sonny7730]

hmm...interesting. i've never heard that one before. maybe i should look into that with my y8. but to answer your question, mini-me's and such are a good way to go, or a d16y8 or a d16z6. both are pretty good for modding and such.

[transzex]

from the insider info I'm getting, core shift of the casting from using same molds for 12 years.

[DOG]

Same molds for 12 years? That's just for the bottom end, right. The change in the heads/intake/fuel management over the last decade obviously shows that was their focus. What about the D17? Is that bottom end case the same? Or a complete redesign?

[soccaian]

Same molds for 12 years? That's just for the bottom end, right. The change in the heads/intake/fuel management over the last decade obviously shows that was their focus. What about the D17? Is that bottom end case the same? Or a complete redesign?

the D17 is quite different... different journal sizes, spacings and such...

[DOG]

The rods are 137.5 on the D17, is this correct? Ive heard they were pretty thin. I havent seen one myself.