Higher lift means you have to stick to lower compression or run larger valve reliefs, so how is that a good thing?

Plus with the separated cams, you can run whatever valve angle you think is best. If the D's angles were superior, I think we would've seen similar angles on the B, which we don't. I can hardly believe Honda would bother hand-porting Type R heads and not even check for optimal valve angles. The thought borders on ridiculous. Plus how much lift you run relates to how much flow you want. If you can achieve the same flow at lower lift, go for it! Look at flow #s not something arbitrary and silly like lift. Or even look at valve head size, for goodness' sakes; that's why you run into the valvehead collision factor. B's don't need the huge lift because they have larger valves to allow the flow.

Whatever though, believe what you want. And please note I'm not saying D's suck and no one should ever run them and just go B, because I've got my *** handed to me quite a few times by D16's. But instead of info recirculated, try just looking at both heads objectively and tell me what I said isn't so.


Modified by raene at 11:01 AM 11/6/2004

 

so DOHC is more superior because first, i can adjust the valve angle to however i want. and second, there is lower valve lift?

and comparing the B and the K. how would you make a comparison?
i really have no idea what makes the engine a good engine, since you can even modify every single part of the engine as long as you can find the parts for it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Inisharu D &raquo;</TD></TR><TR><TD CLASS="quote">so DOHC is more superior because first, i can adjust the valve angle to however i want. and second, there is lower valve lift?

and comparing the B and the K. how would you make a comparison?
i really have no idea what makes the engine a good engine, since you can even modify every single part of the engine as long as you can find the parts for it.</TD></TR></TABLE>

The valve angle is pretty much set from the factory, so you wouldn't modify that. As for K's, I've never had the head off a K, so I couldn't tell you how they look I'm hardly an expert on this stuff, but here's my take on a few things...

Lower valve lift is good because it means the valve doesn't have to accelerate as quickly from open to closed and closed to open. That means less wear and tear and it means that at high rpm the valve has less of a tendency to bounce off the seat when it slams closed, so you don't have to run as high of a spring rate... again, less wear and tear.

I really don't want to put anyone off of SOHCs though, they're great engines B or D, either one can get you 10s if you do it right.

 

yah i like both motors. d's are cheaper, parts are cheaper.

 

i say its all about budget...if u got a tight budget go d...a d turbo will put out more power than a bseries stock or even with some work, and cost less. if u got the dough flow might as well go with a b since they are bigger and usually stronget engines with more power. but remember the cost of replacing that gsr when it blows up, when its ur first turbo motor especially...thats why im boosting my dx motor cuz if i blow it i can always get another one for 100 bucks or less, maybe even free

 

D-series for life!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beerbongskickass &raquo;</TD></TR><TR><TD CLASS="quote">D-series for life! </TD></TR></TABLE>

hell yeah!!!!!!!

wait... i have a b-series now... can i still be down with the ninjas?

 

no you get no love.

 

well fine... u get no love either... no intercooler for joo!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 &raquo;</TD></TR><TR><TD CLASS="quote">

I disagree. One thing I have learned from Bisimoto is that the valve angles of the SOHC are superior and allow for a more radical lift camshaft design without the valvehead collision factor of the DOHCs. If you notice, even from factory the SOHC VTEC have higher lift than the DOHC VTEC. Example: D16Y8 mid lobe intake 38.274mm, exhaust 38.008mm compared to the B16A2 mid lobe intake 36.267mm, mid lobe exhaust 35.720mm.</TD></TR></TABLE>

in lamens terms , D series biatch!!

 

Dseries for 250-300 B's after that is my feeling.

I love the D's, but I always will have more respect for turbo B series owners... sorry

 

B series DOHC has a higher power potential. It has higher flowing heads, vtec on the intake and exhaust side and because there are 2 cams alot of the overlap can be dialed out using cam gears. it has more displacement and a stouter block. so if your looking to make insane unstreetable power and have alot of money to spend go with B series dohc vtec.

D series SOHC can get you to the 200 hp range super easy and cheap and with just a little more cash 250 - 300hp is pretty easy. I have a built d16z6 pushing 14-16psi in a 93 hatch and its great. but even in that the power has started to become unstreetable flooring it in first or second above 5000 rpm = lots of wheel spin. but even with all that spin I recorded a 4.9sec 0-60 on my aem ems

 

Are you planning on building it or running stock internals? If your going to do forged internals I say go D series. If you wanna run stock internls go B if you can find a reasonable price on a swap


D-Series POWAH

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GITWIDIT &raquo;</TD></TR><TR><TD CLASS="quote">If you wanna run stock internls go B if you can find a reasonable price on a swap</TD></TR></TABLE>

LS swap... ~$1200

 

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

LS swap... ~$1200 </TD></TR></TABLE>

My forged internal D16Y8... ~$1500.

 

for the civic stay with the D-series just cause its cheaper, but since my interga came with B-series I'd just boost that cause I know LS blocks can handle the boost.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 &raquo;</TD></TR><TR><TD CLASS="quote">

My forged internal D16Y8... ~$1500. </TD></TR></TABLE>

unless ur me...

i paid $1200 for my whole sleeved block, rods, and pistons all brand new and it STILL **** on me

 

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

unless ur me...

i paid $1200 for my whole sleeved block, rods, and pistons all brand new and it STILL **** on me</TD></TR></TABLE>
Why did your engine go kaput?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93TurboSi &raquo;</TD></TR><TR><TD CLASS="quote">...but even with all that spin I recorded a 4.9sec 0-60 on my aem ems </TD></TR></TABLE>

Holy ****, that's quick! Do you have a complete time record of that pull (as in data points)? I'm trying to gather acceleration/velocity/displacement data from people so I can perform some calculations.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mdpalmer &raquo;</TD></TR><TR><TD CLASS="quote">
Why did your engine go kaput? </TD></TR></TABLE>

spun a rod bearing

 

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

spun a rod bearing</TD></TR></TABLE>

Who did the measring and what kind of bearings did you use?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by racinskittle &raquo;</TD></TR><TR><TD CLASS="quote">Dseries for 250-300 B's after that is my feeling.

I love the D's, but I always will have more respect for turbo B series owners... sorry

</TD></TR></TABLE>
why , you dont have more respect for a smaller motor that puts out the same whp??? single cam at that.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by M.A.R.C. &raquo;</TD></TR><TR><TD CLASS="quote">spun a rod bearing</TD></TR></TABLE>


thats because it had so much power.

 

i only wish

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by M.A.R.C. &raquo;</TD></TR><TR><TD CLASS="quote">i only wish</TD></TR></TABLE>

i know you wish you had a D series

 

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

i know you wish you had a D series</TD></TR></TABLE>

i still have it... only the head is sold . besides i've had two... that's enough