I would like input on my current build up. valve job will be done with a serdi machine. But i am seeking any info as to what angles/ raidus to go with.

My local machine shop will be doing the valve job (im on a budget) and will order me a custom bit if i cant find one that meets criteria. (http://www.serdi.com/cust/bits...g=ENG) follow that link to see pre made performance bits

my setup is as follows
D16z6 head ported and flowbenched
.5 mm oversized stainless swirlgrinded coated valves
crower stage 3 cam.
crower valve train/titaninum retainers
cbr 954 itb's (currently on motor but may switch back to d16y8 manifold if botom end is totally gone)
bottom end :
a6 block
a6 crank (not sure if it will be getting lightned)(thats a whole nother post)
arias 12.3:1 pistons (in my setup)
eagle rods

any help would be much helpfull I would like to see 170+ whp with this setup and i think my ticket is the valve job.

tia

spun

 

Why not let the shop decide what's best?

You'll need to either run race fuel or ITBs to hit 170whp with a D16.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91SiZ6 &raquo;</TD></TR><TR><TD CLASS="quote">Why not let the shop decide what's best?

You'll need to either run race fuel or ITBs to hit 170whp with a D16.</TD></TR></TABLE>

or both

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91SiZ6 &raquo;</TD></TR><TR><TD CLASS="quote">Why not let the shop decide what's best?

You'll need to either run race fuel or ITBs to hit 170whp with a D16.</TD></TR></TABLE>

Did you read my post?

my machine shop dosnt have alot of experience on normaly asperated honda motors. I am hopeng to get advice from somone who does.

thanks for you waste of a post

 

buzump

 

You are going to need a larger cam than a Crower 3 to hit 170 whp. They aren't really any huge shelf cams for the sohc vtec. Look into Web to see if they can make something custom for you. I don't see 155-160 whp being a problem the way you sit right now.

 

Please can we stick to my question? Im not looking to debate anyone on my target number's. Just looking for some help on my valve angle's.
My question is stated above.

thanks

spun

 

you're asking a pretty deep question and those who know make a living with the answer, so they arent going to jump up to spill the beans. valveseats have been the focus of my life for over two years, and i still dont have a tenth of the answers, just to illustrate how deep a question it really is.

whether you do or dont reach your goal will definately depend on the valveseat configuration and chamber shape. my advice to you is find someone with a history of making power on d16s like RLZ, endyn or DonF to do your valvejob. it will be cheaper to pay for it once then to end up tearing it all down and doing it again (this time needing new seats to facilitate another VJ) after falling short the first time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">Did you read my post?

my machine shop dosnt have alot of experience on normaly asperated honda motors. I am hopeng to get advice from somone who does.

thanks for you waste of a post </TD></TR></TABLE>

Way to be a dick, buddy.

Here you go...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike_belben@yahoo.com &raquo;</TD></TR><TR><TD CLASS="quote">you're asking a pretty deep question and those who know make a living with the answer, so they arent going to jump up to spill the beans. valveseats have been the focus of my life for over two years, and i still dont have a tenth of the answers, just to illustrate how deep a question it really is.

whether you do or dont reach your goal will definately depend on the valveseat configuration and chamber shape. my advice to you is find someone with a history of making power on d16s like RLZ, endyn or DonF to do your valvejob. it will be cheaper to pay for it once then to end up tearing it all down and doing it again (this time needing new seats to facilitate another VJ) after falling short the first time. </TD></TR></TABLE>

 

Face it bro for someone looking for help your being a big dick.
Now3 to answer you question try a 35-45-65 with a 1 mm wide seat,it wont be the best valve job out there for you but it will work better then most will give you.Also try being nice next time it will help you much more,even if someone give you an answer to a question you didnt ask or want to know.They are just trying to help you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Fkned &raquo;</TD></TR><TR><TD CLASS="quote">Face it bro for someone looking for help your being a big dick.
Now3 to answer you question try a 35-45-65 with a 1 mm wide seat,it wont be the best valve job out there for you but it will work better then most will give you.Also try being nice next time it will help you much more,even if someone give you an answer to a question you didnt ask or want to know.They are just trying to help you.</TD></TR></TABLE>

Thanks for your help. I see what you are trying to say but People that didnt even read my post and are telling me i "need stuff i already have" or are trying to argue about my target hp are not trying to help. If "you are trying to help" somone you either dont post if you dont have the awnser or you post helpfull info like you just did. Im not trying to be a dick but i get mad because myself and alot of others only post unless they are trying to help somone, not try to start a flame fest.

 

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

Thanks for your help. I see what you are trying to say but People that didnt even read my post and are telling me i "need stuff i already have" or are trying to argue about my target hp are not trying to help. If "you are trying to help" somone you either dont post if you dont have the awnser or you post helpfull info like you just did. Im not trying to be a dick but i get mad because myself and alot of others only post unless they are trying to help somone, not try to start a flame fest.</TD></TR></TABLE>

Dude, I did answer your question. There is nothing in your original post that says your shop doesn't have experience with Honda heads. You could've either provided that information up front or been a little more polite about it. If you need to tell a shop how to do their job, I would find a different shop even if it means spending more money up front. If you think your ticket is the valve job, pay someone with a proven track record to make their own decisions on both the port and valve work based on their years of experience. Meaning, let a professional who actually knows what they're doing decide what valve angles would compliment the head work you already have done. At the end of the day, you get what you pay for. Cheap. Fast. Reliable. Pick two.

You also said that you might switch back to a Y8 IM, so I was providing information that you won't hit 170whp without the ITBs and/or race fuel.

You seem a little high strung. Chill out, dude.

 

bump for advice on valve angle

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">bump for advice on valve angle</TD></TR></TABLE>

Unles you go crazy on valve size
The D16 head has a really good valve job from the factory
with the lift on those cams You will make more power

from porting the head than cutting the seats ..

the factory valve job on the head is about what Ed desribed

If you want to make power with the SOHC you can run 32.5 mm intakes
and 27 mm ex valves you will need to put new valve seats in the head
and sqaure port the runners to get the volume

if you do it right it will flow about 265 CFM @ 28 inches

I did a head like this for Matt Patrick and the zex car 3 years ago

 

 

thank max cfm and ed
My head is ported, I have .05 mm oversized valves
do you think i will need to get new valve seats?

mike any input on eds numbers?

 

Brad and Ed are both mentors of mine, you should take what they said as the gospel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">mike any input on eds numbers?</TD></TR></TABLE>Sorry i never did any serious work to a d series yet,just street ports that weren't flowed so I couldn't say.

 

I still don't understand why you don't just go to a shop that knows what they're doing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91SiZ6 &raquo;</TD></TR><TR><TD CLASS="quote">I still don't understand why you don't just go to a shop that knows what they're doing.</TD></TR></TABLE>I don't understand why you care what he does with a head that you can buy for 50 bucks. If he wants to learn let him learn. This is Honda TECH.

 

i got two of them for free a few nights ago.. and im gonna chop one up like a loaf of bread as soon as i find time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChopSuey &raquo;</TD></TR><TR><TD CLASS="quote">I don't understand why you care what he does with a head that you can buy for 50 bucks. If he wants to learn let him learn. This is Honda TECH.</TD></TR></TABLE>

My bad. If other people want to throw money away, so be it. I'd just rather do it right the first time instead of having to pay for it over and over again. Must be why some car guys are always flat broke...

 

I have also heard before that the d16 has a great stock valve job, and that if you are using a stock bore (75-75.5) that its better to keep the stock valve sizes as bigger valves will only lead to more shrouding and less flow--makes sense but I can't prove it.

 

Thanks guys for all the great info. another question..

I see alot of head builders use metal (looks like brass) valve seals. what is the advantage over the stock. will I see bis gains over stock in my application or should i stick with stock?

also what size are the stock z6 valves the ones i got from kmsengines.comhttp://www.honda-performance.com/valves.asp

d16 0.5mm oversized
"Stainless Steel Racing Valves for D16 engines. Heat-treated, staelited, and black nitrided for hardness. "

thanks agan for all the help!

 

Oem Valve Sizes is 30mm on the intake and 26mm On ex

The factory Guide Material is very good .

The honda valve seats are very good material also

The only time you should change out the valve seat

is when going to a bigger valve than the seat ..