Wanting a higher C.R

D15, D16, D17 and Mini-Me swaps
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Wanting a higher C.R

By TOPIK3900
- Thu Mar 14, 2013 2:34 pm #328580 So I have the D16z6 and I noticed that the compression ratio is lower than most 1.6l's.. I would like to bump it up abit.. As far I i can remember you can use the y8 headgasket.. Does anyone know how much this would gain me.. or if there is anyother headgaskets that could be used.
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By TOPIK3900
- Fri Mar 15, 2013 4:07 pm #328665 Ok cool.. now i was just oging through the mini diy thread.. and i noticed it saying it could yeild 10.5:1.. now is that with using the 1.5l block or would i get the same with the d16y8 block.. Seeing as the rest of the internals are basicaly the same, The exception possibly being the shape of the pistions.
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By teal_dx
- Fri Mar 15, 2013 4:40 pm #328668
TOPIK3900 wrote:Ok cool.. now i was just oging through the mini diy thread.. and i noticed it saying it could yeild 10.5:1.. now is that with using the 1.5l block or would i get the same with the d16y8 block.. Seeing as the rest of the internals are basicaly the same, The exception possibly being the shape of the pistions.

Correct, that was with the d15b7 bottom end. If you use a D16y8 with a D16y8 head, you'd be back to the stock CR, which is 9.6:1
There's so many combos of D series... someone has made a compression calculator :thumb:
http://www.knology.net/~jediklc/D.htm
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By suspendedHatch
- Fri Mar 15, 2013 8:10 pm #328678 The Y8 and Z6 head gasket are the same. They were once different, but they were consolidated.

On the internet, old information never dies.
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By TOPIK3900
- Fri Mar 15, 2013 8:28 pm #328682 Did they discontinue the z6 hg or the y8? jw seeing as they were different thicknesses

By asrolsani
- Mon Mar 18, 2013 3:42 pm #328853 replace p28 with p29 piston
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