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Discussion Starter · #1 · (Edited)
B7 block
P29 pistons (d16a1)
Stock rods

z6 head
hottanked/cleaned/milled (done)
Cometic headgasket (have)
Crower stg2 cam, springs, retainers
1mm oversized valves
Slight port/polish
3 Angle Valve Job (done)

Skunk2 intake manifold w/ Hondata Intake Manifold gasket
GSR TB
AEM cold air intake (have)
DC 4-2-1 1 piece header (have)
2.5 Greddy Evo exhaust (have)

This is what I'm thinking so far. Leave any other suggestions on here.

I have pretty much unlimited dyno time, so tuning will not be a problem here. Thanks.
 

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Discussion Starter · #3 ·
Made 127whp, like nothing for torque (96ish). On stock head and block.

Just I/H/E, tuned on Crome.
 

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I would not go oversized on the valves without boring the block. The vtec heads already have a shrouding issue, you'll just make it worse by going 1mm over. I went .040 over on my block, and it might have been the best think i did. Deshrouding the valves did good things! I plan to do valves this summer among other things but I'm going to keep the intake valves stock size. (You can oversize exhaust if you want, i probably will)
 

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according to omniman, from intertunetv, oversized valves aren't a good idea, with a bigger cam because they could lap. which doesn't help that the head is going to be milled I believe.
 

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:werd: on the valves are too big for stock bore.
IIRC, someone stated that the cylinder bores already shroud the valves and more flow can be had just by overboring(I guess this is why the A6/non-VTEC heads work so great on stock bores). Stick with the stock valves since you already had the valve job done.
 

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Discussion Starter · #13 ·
no there wont be, because the compression ratio with p29's in a b7 block with a z6 head is only like 9.5:1 or something.... i have more on my a6 with z6 gasket i think....
Ummm, that is very very wrong. With the p29's in the b7 block, I am looking at around 12:1 compression. How do you explain 9.5:1? Right now, just on the mini me I am around 10.5:1.
 

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stock d15b7 - 9.28:1

d15b7 with p29's - 9.48:1 (ok, ok, you're right :roll: )

with p29's and z6 head and gasket - 10.47:1

where the hell did you get 12:1? lol

http://www.zealautowerks.com/dseries.html
he probably got that because as he stated in his first post that the head has already been milled and you need to add that in, which will bump the compression up.
 

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he probably got that because as he stated in his first post that the head has already been milled and you need to add that in, which will bump the compression up.
what if it was milled just enough to make sure its flat??

the real question is... how much was is milled?

answer: AT LEAST .050" off the head

lets wait for his response

im not bashing your build, im just wondering where 12:1 came from
 

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Discussion Starter · #18 ·
Head milled .030. The compression calculator that I used must be different, I'll try and find what it was again.
 

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I dont agree with that zeal calculator, P-29's sit so far down in the bore there is no way they have the stated compression. By that calculator I am over 14:1 which isnt true considering I am running pump gas with no issues.

My setup P-29's and A6 head milled 0.079 and Y8 head gasket
 

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I dont agree with that zeal calculator, P-29's sit so far down in the bore there is no way they have the stated compression. By that calculator I am over 14:1 which isnt true considering I am running pump gas with no issues.

My setup P-29's and A6 head milled 0.079 and Y8 head gasket
Yea with that setup you should be round the 11:1 range. Not 14, thats way out there.
 
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