ek9 valves


lumek4

lumek4

Active Member
Joined
Oct 29, 2007
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hey people the time has come where im getting my ek9 cams v/springs and retainers and the head gas flowed and milled to up the compression to around 10:8:1 on my b16a2 engine.

now would i be better fitting the ek9 valves aswell and also do they fit the b16a2 head. cause i know the valves on the b16b and the b16a sit at a different angle. so not sure if the b16b valves will fit the b16a2

thanks Callum
 
lumek4 said:
hey people the time has come where im getting my ek9 cams v/springs and retainers and the head gas flowed and milled to up the compression to around 10:8:1 on my b16a2 engine.

now would i be better fitting the ek9 valves aswell and also do they fit the b16a2 head. cause i know the valves on the b16b and the b16a sit at a different angle. so not sure if the b16b valves will fit the b16a2

thanks Callum
Click to expand...

Why spending your money on the used OEM parts, and not get a set of Skunk2?

S2 Stage 1 cams, valvesprings/valves and retainers. Not alot more than you would pay for the equivalent EK9 parts plus more hp and brand new :nice:

skunk2.com
 
ManosEK9 said:
Why spending your money on the used OEM parts, and not get a set of Skunk2?

S2 Stage 1 cams, valvesprings/valves and retainers. Not alot more than you would pay for the equivalent EK9 parts plus more hp and brand new :nice:

skunk2.com
Click to expand...

because i got everything for a very good price of my mate haribo. ctr cams,ctr v/springs,ctr retainers all for £200 and he has no use for his valves anymore as he has skunk2 ones now.

so will i be better with the ctr valves will they fit or just keep the std valves from the b16a2
 
type R valves are lighter compared to b16a ones. for me, the best bet is to get the complete of type R head for full R potential.
how much the valves goin to cost you.i might be wrong, but i x think putting the R valves goin to make a lot of difference in comparison to the standard one
 
whichever valcve you go for you'll need to take the head and valves loose to a good machine shop and have them cut to match on ideally a high end machine like for example a SERI 4.0.

You take your head to the machine shop and get him to put the serdi vac meter on each intake or exhaust port and thisll tell you how good/bad seal it has.

The B16a heads and B16b heads are a 3x angle valve job from the factory, if your going turbo, you only need to have the middle-angle re-cut on the valve and head as this is the angle that forms the seal. Most machine shops will charge you £70-90 for a single angle being recut on a diamond machine like serdi. If your going allmotor then a 3-angle job or a 5-angle job would be more suitable. Although its worth noting that generally they wont drastically change the seats unless they have alot of experience with xyz heads. On allmotor setups you'll find that a good machine shop will measure the angles on the head of the aftermarket valve and match the cylinder head to it.

Either way when you go to collect your head you should as them to put it back on the vac-tester and look at the guage... all things being good and the rubber suction pad being held correctly over the ports you should have EQUAL vacuum reading on each cylinder! equal vacuum is a good sign, if you have a good healthy setup in your shortblock then after valve-lash adjustment you should have EQUAL compression and cyl-leakage. Equal compression and leakage = a long-lasting healthy engine.

if you have one cylinder down on compression itll run rich, and the other three will run lean! this is because your O2 sensor is reading an average of all 4x cylinders! and if you turbo or really high compression and you have uneven compression, then that motor isnt going to last very long! Either way you ll end-up with scuffed walls and at least one over-expanded piston.

When you put it back together, make sure you abide by the factory manual and ARP fastener specs if you use them. then make sure you do a full leakage test while its still on the stand and a compression test before you even fire it up! That way if theres a problem you see it and rectify it instead of blowing your money down a big hole!
 
thats alot of good info ek9turbo thanks very much must have took u about a week to write that story ha ha. ok i will get onto agra the people that is away to gas flow my head and see if they will re angle and cut ext and what the cost is.

so the ek9 valves will be ok to use in the b16a2 head.

thanks ek9turbo
 
No problem! One thing to ask is for a flow chart fro the ported head! ;)

and remember, no matrter how good your head flows itll always be limited by your IM. consider changing IM or getting your chopped, ported and re-welded! :nice:
 
EK9turbo said:
No problem! One thing to ask is for a flow chart fro the ported head! ;)

and remember, no matrter how good your head flows itll always be limited by your IM. consider changing IM or getting your chopped, ported and re-welded! :nice:
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a chopped inlet manifold never herd of this gettin done. what sort of benafits will i get from this. so do thay just chop the im so they can port it better
 
:D
lumek4 said:
a chopped inlet manifold never herd of this gettin done. what sort of benafits will i get from this. so do thay just chop the im so they can port it better
Click to expand...

Ported IMs with the company I sell for is quite a new thing but theyve been doing it for nearly three years now, industry leading ;)
They do a massive amount of research and development!

Blueprint Manufacturing - Advance Race Technology - Engine Sleeving and CNC Port and Polish

Proven gains of upto 20hp on built allmotor engines!
Upto 335CFM, what did you say ITBs flow again??!!!
 
EK9turbo said:
:D

Ported IMs with the company I sell for is quite a new thing but theyve been doing it for nearly three years now, industry leading ;)
They do a massive amount of research and development!

Blueprint Manufacturing - Advance Race Technology - Engine Sleeving and CNC Port and Polish

Proven gains of upto 20hp on built allmotor engines!
Upto 335CFM, what did you say ITBs flow again??!!!
Click to expand...

this looks very good. so you think any machine shop could do this sort of work or better off just buyin one already done. where do the cut the im
 
B16B valves should fit but not perfect. The B16B head is actually a port and polish version of the B16A. I know SPOON polished valves have the same part number for B16A/B and B18C though.

The valve seal angle is different. So you will need your head to be ported to match to be safe.

(((So if you have a B16B head you don't need to further port and polish unless you want to make power above 9000rpm, B16B heads are already made to support 8500-9000rpm+, further porting will only push the point where it makes power higher, so what you get is a laggy shitty bottom and mid range end, and only make it rip and flow at 11,000rpm,(your 6000-7000rpm will feel like 4000-5000rpm) Theres no fuel except racing fuel that can support anything above 9000rpm+, it detonates before it ignites anyway. )))

Too make it work perfectly, you will need to port and polish your head to B16B spec.
Hmm, if your not too comfortable with the idea, I suggest polishing your B16A valves instead.
 
lumek4 said:
this looks very good. so you think any machine shop could do this sort of work or better off just buyin one already done. where do the cut the im
Click to expand...

Well im sure theres machine shops that will do it but how much R&D and before/after flow testing have they done???

Id reccomend you buying on through blueprint. The quality is unsurpassed and flow for flow you can make more hp with these than throttle bodies as you can use a ram-air of have your filter in the corner of the bumper! ;)
 
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