Rep Power: 413

This is the first that I've ever heard of them. If it's a repost, sue me.

http://www.rddyno.com/prod/d_series.shtml

 
Rep Power: 0

i think those are only bored out d16's

 
Rep Power: 0

Looks like they can't spell VTEC

http://www.rddyno.com/prod/home.shtml

 
Rep Power: 511

d 1.7l shortblock=d17 shortblock doesnt look too bad, would have to see some feedback about them first though

 
Rep Power: 607

hmmmm........they don't say what for kind of sleeves they use. They say custom pistons

there are plenty of other trusted honda builders that i would go to instead. Honda-Tech is filled with them

 
Rep Power: 302

ROFL

 
Rep Power: 0

ask them through email those block are not D17's they are d16's bored out to the specific, size you whant,

 
Rep Power: 413

Yea, A good amount of people on clubrsx have used them and I was just looking at them for my k20a once we swap it in when I ran across their D series products. I figured you all might like to know.

 
Rep Power: 0

I have used them many times. I just got my B16 head CNC ported and assembled by them. The work is totally flawless. Darren really knows what he is doing.

 
Rep Power: 0

since the sohc options listed range from 1.7 to 2.0, i assume they are all bored and/or stroked d16's

 
Rep Power: 0

I was just looking through the new DragSport mag and R&D Dyno is listed there as doing the head work on the cover car, 627hp, 2550 lbs, 10.38 @141 mph.

http://dragsport.com/issue/17/cover_story.shtml

 
Rep Power: 0

As I mentioned before, they did the CNC porting & valve job on my B16 head. Here is the flow sheet. FYI, a stock B16 intake flows about 256 CFM @ 0.500 lift and a stock b16 exhaust flows about 167CFM @ 0.500 lift.

 
Rep Power: 413

Are you running a 0.500" lift cam?

 
Rep Power: 0

Not quite. I'm using the Crane 253-0014.

http://cranecams.com/?show=browsePar...lvl=4&prt=2028

On VTEC the max lift is 0.488" intake and 0.472" on the exhaust side.

 
Rep Power: 0

Also, IMO, don't ever buy a PnP job without a flow bench sheet to back it up. Of course, flow is not everything, velocity is just as important. But if the shop didn't even flow it when they were done then I would steer clear. Even though mine was a CNC port job, and supposedly exactly like the master head, which had been flow tested and dyno tested, R&D still verified all my ports on the flow bench.

Just my 0.02