mini me swap

D15, D16, D17 and Mini-Me swaps
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mini me swap

By nekim
- Sun Feb 08, 2009 7:16 pm #94999 I have a 95 CX which come with a D15b8? 70 HP only ?

I am swapping in a D16Z6 head, intake manifold/throttle body an the head also adds VTEC. With this simple ugrade how much gains in HP should I expect? I always thougnt I had a D15B7 which has 30 or so more HP then the D15B8.

I also have an aftermarket header/downpipe which I will be installing as well.

I will be adding turbo eventually. My WHP goal is 180-200 which I'm pretty sure i can get away with on stock internals. . .

Any suggestions would be greatly appreciated. . .
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By Death_Blooms
- Sun Feb 08, 2009 9:45 pm #95045 I really hate bench racing stuff like this because every motor will not act the same to the same mods.

I'd say you'll be in the 110hp range. You'd be at almost 10:1 compression(according to the zeal calculator). 6-8psi off a small snail would get you close to your goals on a good tune
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By teal_dx
- Mon Feb 09, 2009 3:13 am #95128 I think you would be close to 127hp (same as d16z6 at the crank)
Your motor will be a 1.5L version of the D16z6 with slightly higher compression to make up for the difference in displacement.
That's if you upgrade to the z6 TB, intake manifold/injectors & P28 ecu as well.
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By hondajunkee
- Mon Feb 09, 2009 4:07 am #95130 Someone can correct this if I'm wrong but from what I've heard the d15b8 pistons only have 8 piston reliefs unlike 16v motors that have 16 reliefs which would make it so you couldn't do a mini-me swap.

but I'm not 100% since I've never owned a B8
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By chrono404
- Mon Feb 09, 2009 8:08 am #95169 the 12 valve (b7 or b8, dont recall) has valve reliefs for the 16 valve head so you can do a mini me on it.

By nekim
- Mon Feb 09, 2009 12:49 pm #95178 I have the D16Z6 head, IM, TB and injectors. I will be putting in the P28 as well so I can run the VTEC. O plan on going boost so I would want a lower compression correct? So I would go with the Z6 head gasket?

If I installed all these components and everything goes peachy then I should be close to the 127 HP mark? Thats a big leap from my stock 70hp.

I do realize that you can't be 100% positive on how much gain you will have uness you hit the dynbo. I am just curious.
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By Death_Blooms
- Mon Feb 09, 2009 11:26 pm #95301 Stock they were 90 or 95 hp lol
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By hondajunkee
- Mon Feb 09, 2009 11:39 pm #95307
chrono404 wrote:the 12 valve (b7 or b8, dont recall) has valve reliefs for the 16 valve head so you can do a mini me on it.


The B8 n the cx was an 8 valve head
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By Josiah
- Tue Feb 10, 2009 1:34 am #95344 try a b series motor
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By Josiah
- Tue Feb 10, 2009 2:05 am #95362 i did. ill donate :thumb:
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By CaliEJ2
- Tue Feb 10, 2009 5:16 am #95426
teal_dx wrote:be a post whore in the Junk Yard from now on or you'll be donating your post count :hehe:


Can I have them? lol

Idk if this is true but i heard that the b8 has flat top pistons that will result in a higher compession? i had a b8 like 2 months ago....hated it
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By teal_dx
- Tue Feb 10, 2009 5:18 am #95429
CaliEJ2 wrote:
teal_dx wrote:be a post whore in the Junk Yard from now on or you'll be donating your post count :hehe:


Can I have them? lol

Idk if this is true but i heard that the b8 has flat top pistons that will result in a higher compession? i had a b8 like 2 months ago....hated it


I don't think that is true. They looked like D15b7 pistons I think, but I only took one D15b8 apart and it was a while ago. I can't say 100% for sure.
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By chrono404
- Tue Feb 10, 2009 6:53 am #95440
nekim wrote:O plan on going boost so I would want a lower compression correct? So I would go with the Z6 head gasket?


Yes and No,
When you lower compression you loose power. If you go with lower compression pistons you will need to crank up the boost, meaning longer spool times to get to where you would be if you use pistons at the same Compression.

However if you go with lower compression it will be easier to tune. However if you are going to have it professionally tuned this isn't that big of an Issue.

My Stock z6 + I/h/e smoked a "Built" z6, it had vitaras and forged rods. He was boosted however had a massive boost leak, Therefore was easily smoked. If he had OEM compression that wouldn't have happened.

I would recommend forged Rods, maybe oem compression forged pistons, but i wouldn't put more than that into a D15 block.
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