I used to drive a 2005 Honda Civic Vi. I think it had a D17 with VTEC. All i can say is free revving (like crazy) but it also gives you a sense like it was going to last forever no matter how bad you treat it. Never driven any other D series engines but my only impression . I've now moved on to a K24 and very happy .
BTW...I wasn't comparing those two engines. LOL...
I am a Cylinder Head reconditioner by trade, and was just wondering if there's anything people have done to a D15B4 head to get a little extra power. I am thinking of match porting it, and maybe even welding up the combustion chamber to raise compression, and getting a cam grind. Has anyone had any success doing any of this?
On top of that getting some headers/extractors and 2" exhaust fitted, for extra flow and a fatter sound.
I doubt anyone here has done any head work to this particular head,I mean I only know of Weq that has done any headwork to a d-series...
But I'm sure you know the things you will be looking at:
- P&P
- 4 angle valve job
- Port matching the Intake side to the IM and Exhaust side to extractors and the gasket aswell.
- Shave a little off (I'll get the exact amount soon)
- Use an OEM head gasket,it's not worth the .1 bump in compression to use an after maket one.
Here's some work on a d-series head:
Before:
After:
Dimples,like a golf ball:
Did you do that port/polish job mate? Nice job whoever did it. From that cross section there looks to be a fair bit of meat to grind away before hitting the galleries. Definately gonna give it a go soon. I was planning on welding up the Combustion chamber a little also, try and bump the comp up above 10.
Thanks mate.
Originally Posted by R_RaTeD
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. I've now moved on to a K24 and very happy 
.
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