kidd_drastic

I was wondering the difference between the two IN PERFORMANCE. My setup i'm shooting for is 220+ whp and 150+ wtq. Is there a big difference IN PERFORMANCE. between a 3 or 5 angle valve job?


Modified by kidd_drastic at 5:04 PM 12/12/2005

DonF

2 angles

mike_belben@yahoo.com

lol

kidd_drastic

thank you.

jax si

don, you never cease to amaze me with your hilariously honest answers...

Combustion Contraption

DonF, this kid is just looking for advice.

sheepey

omg, Don is comedy sometimes....im sorry i shouldnt be laughin but its funny. First laugh ive had all day ( i needed it i hate my car )

xEnderx

At its most basic level....the more angles a valve job has the better the seating for the valve. More angles = less obstruction for the fuel/air charge when it enters the head also. I'm sure one of the guru's can go into greater detail.

2k.civic.si

he says it so serious to

onepoint6i

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sheepey &raquo;</TD></TR><TR><TD CLASS="quote">omg, Don is comedy sometimes....im sorry i shouldnt be laughin but its funny. First laugh ive had all day ( i needed it i hate my car )</TD></TR></TABLE>

what happened?

sheepey

damn dizzy took a ****...imma try to fix it right now...

Real_E-AT

Wow lots of brown nosers in this thread.

2k.civic.si

ive heard a lot of the "elders" say to 3angle the intake and 5 angle the exhaust...now as to why...i dont know

ShaunRR

The correct answer is: there is no correct answer. Different porters get different results with different valve jobs. One kind is not universally better with every port.

kidd_drastic

but would u recommend and multi angle valve job or a 3 angle valve job on your motor.

Soda Popinski

Stick with 3 and stock valves.

kidd_drastic

stock valves? why use stock valves for?

kidd_drastic

anyone have any opinions on this?

drdisco69

Basics:
Radius &gt; angle.
Stock valve job = stock flow, for the most part.

GUILOTINE

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote">Basics:
Radius &gt; angle.
Stock valve job = stock flow, for the most part.</TD></TR></TABLE>

kidd_drastic

i'm lost. why would i want stock air flow?

ZhaGg

wouldn't something like a mira-cut (5 angle) job help increase the overall flow out of the port since there are more angles? The increase in angles supposedly allows a more gradual transition from the port to the combustion chamber while still allowing the valves to seat. The same goes for the angles on the valve, though i think most folks stick to 3 angles on the valve.
I don't do much head work, so I'm not really sure. Any insight?

GUILOTINE

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kidd_drastic &raquo;</TD></TR><TR><TD CLASS="quote">i'm lost. why would i want stock air flow?</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZhaGg &raquo;</TD></TR><TR><TD CLASS="quote">wouldn't something like a mira-cut (5 angle) job help increase the overall flow out of the port since there are more angles? The increase in angles supposedly allows a more gradual transition from the port to the combustion chamber while still allowing the valves to seat. The same goes for the angles on the valve, though i think most folks stick to 3 angles on the valve.
I don't do much head work, so I'm not really sure. Any insight? </TD></TR></TABLE>

as stated before, a full-radius valve job done on a Serdi machine is best

kidd_drastic

a full radius valve job? isn't that both 3 and 5 angle.

ExplicitSpeed360

In theory should help but no enough to see huge gains in reality. 3 angle and some slight oversized valves. All my heads get a 3 angle valve job.