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View Full Version : Power Mods d15b vtec vs. d16z6 bottom end?



kain86
07-24-2007, 03:27 AM
i just looked at the first thread i posted and man i sounded fucking retarded but anyways. im wondering should i use my d15b bottom end or get a z6? i know that they use the same p28 rods but are the pistons the same and its just destroked? oh yeah im planning on busting it so which crack is stronger?

1SOL2NV
07-24-2007, 04:16 AM
oh yeah im planning on busting it so which crack is stronger?
..... wut ya mean .... boosting it ?

RandomGuy
07-24-2007, 07:29 AM
lol wtf on so many levels?

JDM onlyy
07-24-2007, 12:58 PM
huh? if you're gonna blow something up then don't blow up the d15b..give it to me. lol. but i believe the the d15b has higher compression because it doesn't have recessed pistons. not quite sure..i forget. but sell me the d15b head. :D

LSTurboHatch
07-24-2007, 12:58 PM
the pistons are slightly different. as far as i have read, the only pistons that work well in the d15bs are the vitaras. a vitara eagle combo will work well for boost and have 9.18 compression. personally i would go with the d16z6 and gain a few ft lbs of torque. i have some SRP pistons for sale if you do use the z6.

kain86
07-24-2007, 03:07 PM
yes i was trying to say boosted and i want to boost a d15b since i havent seen much with high Hp turnouts. but if in the long run a z6 with benefit me and last longer then i'll go with that block. also my gaol is only 250-300whp. oh yeah and sorry im not selling the head its being tore down to be sent to a machine shop. when i get it back though all my head work will be done. So far the bought parts list goes like this.
1.SK2 cam
2.Sk2 cam gear
3.Ti retainers
4.Double spring valve springs
5.Stainless steel valve
as for head work...hehe
1.PnP
2.3-angle valve job on head
3.2-angle on valves
4.head being decked .001"
hehe fun stuff and all on the low low.
this is why i was asking about the block cause it's next.

Autoworks
07-24-2007, 05:37 PM
Z6

SoLJames95
07-25-2007, 04:33 AM
Z6,Trust me Ive blown three D15s, With stock internals and at 10 pounds.:no: The true Power is out of a z6. Do not build a d15b7 your wasting time, Not enough trq, or power. If you want 250-300hp. Suggest the z6,with aY8 tranny. I made 208hp, and 190 trq on d15 b7. But not safely... Do not make the same mistake that I did. Not unless you just like to blow things up.:crazy:

SoLJames95
07-25-2007, 04:37 AM
BTW, Dont use a D15 head, just an opinion, The vtech is like a 3 stage weird shit. You should try a Z6 head or even the D16A-(Dont know much About, but heard good things.)

kain86
07-25-2007, 03:51 PM
there are two d15b vtec head one with the "three stage vtec" and one with single/regular vtec i have the single. its pretty much a z6 head but with a diff cam.

kain86
07-26-2007, 03:10 AM
ok guys i've decided to buy a d16z6 block......hehe with eagle rods, vitara pistons, acl bearings, and a micro-polished crank..hehe... BOOST HERE I COME!

LSTurboHatch
07-26-2007, 01:30 PM
^^thats a good plan. if i didnt get such a good deal on my wisecos i would have went with vitaras.