i know most of you guys like B, H and K series but i'm too poor to swap any of those into any of my cars I've been messing around with D Series motor for a while now and i've always wondered what people recomend for higher compression D series heads.

I've personally built a few D heads (VTEC and non-VTEC) but so far i really haven't ventured into much porting and seeing what works with what. I recntally built a D16Z6 head for my friend's car (D15B7 mini-me, the block is toast and buring oil now ) and I used JG Engine Dynamics spring/retainer combo and a Comp Cams Stage 2 cam. I've been told this cam dosn't have much overlap and is good for turbo apps but i'm not sure if this is a good or bad thing. I know B series make lots of good power with a good ammount of overlap but what about D motors? Also is there any way to determin the ammount of overlap without degreeing the motor?

Next up is blocks, now i know D16s have a horrible R/S ratio (1.52:1) and a very tiny bore (75mm) but i'm not sure how this affects overall power output. Someone told me that the R/S ratio will make the motor more tourqy but i'm not sure how true this is. Also as for D Series OEM pistons, whats good? I'm trying to learn about quench pads (i think that what they are called) but i so far havent completly grasped the concept. I herd that a flat top piston has a bad quench area, but what about a domed piston like a ZC/P29 piston?

I'm going to be building a high compression (12:1) motor for a friend using stock bottem end parts and built head but i'm not quite sure what all needs to go into the head. The head is the one i mentioned previously (JG Valvetrain and Comp cam) and i'm thinking of tearing it back down and doing some bowl blending and minor smoothing of the runners to help the air flow into the motor.

Sorry for the long post, i hope that some good info can come from this for everyone to see

BTW, cliff notes:
What head setup works good on a high compression (12:1) setup?
What exactally are quech pads?
How will the 1.52:1 R/S ratio of the D16 affect it's overall power output?
On a D, whats better, alot or a little overlap?
What headwork sould be done on a high compression motor? (p&p, etc.)

 

heres some of the cam specs, as you see the Comp Cams Stage 2 (59300) is almost identical to Crower's Stage 2 turbo cam. Would running a Crower Stage 2 N/A cam net much more power then a Comp Cams stage 2? Or sould i save some $ and stick with the Comp?

 

here are the pistons i plan on using in this build, ZC/P29 pistons (thanks B18C5-EH2 for the pics)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onePOINTsix &raquo;</TD></TR><TR><TD CLASS="quote">here are the pistons i plan on using in this build, ZC/P29 pistons (thanks B18C5-EH2 for the pics)



</TD></TR></TABLE>

Are these the same as the 88-89 Integra pistons?

 

yes

p29=pm7

here's the spec card that came with my crower stage 2 cam

http://memimage.cardomain.net/...l.jpg


Modified by robtec at 11:02 PM 12/21/2004

 

pic is broken

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP &raquo;</TD></TR><TR><TD CLASS="quote">

Are these the same as the 88-89 Integra pistons?</TD></TR></TABLE>
yep those are the ones. the 86-87 had PG6B's with a 1.3cc dome.

 

Why do those domes not look quite like p29's? They look a little low