ok im looking foward on buying a head and some guy has one for 550 and it comes with Rev stainless steel valves,Web cam dual springs and Ti Retainers,Ported and Polished, 0-ringed, 5 angle valve job, Stock cams with Skunk 2 cam gears in red

my question is its going in my non-vtec ls motor and im going to be useing crower springs and 404 cams im only going to leave the ti retainers that the head comes with,but i dont know what and if its ok to use this head since it has a 5 angle vualve job.i whant to know what is the diffrense between a 3 angle vuavle job and the 5 angle vuavle job. then if i should use this with my set-up im going to go with which is litsted below.thanx

block b18a1

ctr pistons .25 over
ls rods
oem rings
arp rod bolts
arp head bolts
oem head gasket (im going to take out the middle layer)

head

pnp head that is listed above
crower vualve springs
crower 404 cams
ti retainers

misc.

inline pro fuel rail
inline pro fpr
rc 310 injectors
tb ported to 65mm
im pnp and port matched to tb and head
aem cai
custom 4-1 2.5in collector header
2 1/2in hi-flow cat
2 1/2in cat-back custom
P28 ecu
hondata
tune

and im going to be useing 93 octane all the time

 

here is pics of the head.

http://www.need4speedpower.com...age=2

do yall think i should buy it for 550?thanx

 

the difference between a five angle and a three angle is what it sounds like

three is usually 90degrees, 60 degrees, 30 degrees

five angle is the same as three but in adittion to 15degrees, and 120degrees

the degrees are the angle cut into the valve seat this creates a channel for the air to enter the combustion chamber

 

just think of the time spent on the porting would have cost more then the list price alone, but id try to get it for cheaper but thats just me

 

ok so would it be better for me on the set-up im going to be useing? also does it look like its been done right? i know the pick suxs but thats all he has.thanx for the info although i dont understand everything exact,but i think i get it.

 

5 and 3 angle valve jobs are both good.

BUT, the valve job is only good if the quality of the work is good. Any machine shop can do a valve job, finding a good place that does it is the key.

 

The valves look oversized, are they?

I seriously think you might run into piston/valve contact with that setup. Make sure you clay your motor. You may need a slightly thicker headgasket - don't even think about removing the middle layer.

Has the head been milled, or has the block been decked?

 

niether the head been milled nor the block has been decked. also im going to clay it and im going to leave all 3 layers on the headgasket.also i dont know if the vualves have been swaped to oversided ones.

 

5 is too much... 3 is perfect.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 137 &raquo;</TD></TR><TR><TD CLASS="quote">5 is too much... 3 is perfect. </TD></TR></TABLE>
AHH..what experience in doing valve jobs do you have to be able to make that statement?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ed’s Racing Heads &raquo;</TD></TR><TR><TD CLASS="quote">AHH..what experience in doing valve jobs do you have to be able to make that statement?</TD></TR></TABLE>

Can you elaborate more on his statement? An explanation of the pros of each valve job.

 

I'm a little confused,you're asking me to explain his remark?If you're asking me for my opinion on valve jobs it's easy you use what works best for the application.That may sound somewhat vague but you can't go into a job pre-determining things like that before you get started.
There was a day last yr where I did valve jobs on 3 sets of Grand National heads for Localio ,all 3 were at different levels of porting and for different applications so they each got different valve jobs,one got a 5 angle and the other 2 got 3 angles but the seats were different widths and changed throat and top cuts,and all had 2 angle into a radius for the exhast seats.

 

didnt mean to confuse you, but your answer s exactly what I was looking for. Thats what I meant by elaborating on the subject so others understand what the importance of a valve job is and not just ANY valve job will do.