Flat faced valves for Turbo build?

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Old Oct 12, 2010 | 07:55 AM
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Default Flat faced valves for Turbo build?

Hey guys just looking for some advice and input on valves. I was looking into getting the ferrea 6000 series valves and noticed they are flat faced. That increases compression .3 points or so. Should I look at different valves (for example I see supertech makes dished valve faces) or is it fine to stick with a flat faced valve? I know that littte bit of raised compression wont mean much in the long run, slightly faster turbo spool. I will be running 9:1 CP pistons in a GSR w/ B16 head.
Thanks for the input

EDIT: Also looking on input for the 5000 series vs 6000 series. Wondering if anyone has experience with either and advantages/disadvantages to either besides the difference in price.
Im looking at getting this valvetrain kit...
http://cgi.ebay.com/ebaymotors/Ferre...Q5fAccessories

Last edited by 93egSLEEPER; Oct 12, 2010 at 08:25 AM.
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Old Oct 12, 2010 | 11:07 AM
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Default Re: Flat faced valves for Turbo build?

nothing wrong with flat-faced valves. it helps with compression, but not so much as you would notice. (i'm not being company specific either). you may want to call ferrea themselves for the answer to your other question.
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Old Oct 12, 2010 | 11:20 AM
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Default Re: Flat faced valves for Turbo build?

Originally Posted by TheShodan
nothing wrong with flat-faced valves. it helps with compression, but not so much as you would notice. (i'm not being company specific either). you may want to call ferrea themselves for the answer to your other question.
Thanks for the reply. Like i said I have never come across any downside from running 9.3:1 in comparison to 9:1... better turbo spool and its still a safe ratio for higher levels of boost. Just wanted some added input
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Old Oct 12, 2010 | 12:54 PM
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Default Re: Flat faced valves for Turbo build?

BUMP...
Looking for input on it keepers and spring seat locaters are a must upgrade part? I ran across another deal not including those. Dont some searching on it but everything is very wishy washy..looking for some solid nput and answers

EDIT: I figured I should include what I will be building and plans/goals so you guys can have a better idea of suggestions to give me.

Benson sleeved 84mm GSR block
GSR crank, Manley turbo tuff rods, CP 9:1 pistons
GE block Guard
B16 head (stock port- 3 angle valve job)
Skunk2 Pro 1 cams
Ferrea full valvetrain (see link above)
BBK performance Intake manifold
BBK performance 70mm portmatched TB
GE fuel rail & FPR
precision 1000cc injectors
Precision sc6262 turbo
Speedfactory topmount
3" downpipe, no exhaust it will be a track car mainly
Tial BOV

My goal is to make 500whp on pump gas with less then 20psi
On Q or C16 600+whp on 25psi

Any input is appreciated,
Thanks
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Old Oct 12, 2010 | 01:14 PM
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Default Re: Flat faced valves for Turbo build?

For 500hp, your injectors might not be big enough.
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Old Oct 12, 2010 | 01:16 PM
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Default Re: Flat faced valves for Turbo build?

Originally Posted by ShanghaiOC
For 500hp, your injectors might not be big enough.
What injectors do you reccomend? I looked into some larger ones (1200 and 1400cc) but researching I found they might be overkill...unless i read something wrong. I know its always nice to have a bit overkill on injectors so they arent maxxed out on their duty cycle but I didnt realize 1000cc would barely support 500whp
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Old Oct 12, 2010 | 01:30 PM
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Default Re: Flat faced valves for Turbo build?

You can run the 1000cc injectors but you might be at a high end of the duty cycle. There's a quick way to figure it out. Take 6cc of flow for every 1WHP. So if you have 1000cc x 4injectors it's 4000cc. 4000cc / 6cc = 666WHP. Schister made this statement a while back, so I give him all the credit on the simple math. Oh yeah, if you use e85, it's a 30% increase. You can live with the 1000cc injectors, but I'd go with the 1200cc's to be on the safe and a better duty cycle.

Here's a couple things for you to read up on.

http://rywire.com/store/faqdesk_info...6e410182f6c602

http://www.rceng.com/technical.aspx
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Old Oct 12, 2010 | 03:02 PM
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Default Re: Flat faced valves for Turbo build?

Originally Posted by ShanghaiOC
You can run the 1000cc injectors but you might be at a high end of the duty cycle. There's a quick way to figure it out. Take 6cc of flow for every 1WHP. So if you have 1000cc x 4injectors it's 4000cc. 4000cc / 6cc = 666WHP. Schister made this statement a while back, so I give him all the credit on the simple math. Oh yeah, if you use e85, it's a 30% increase. You can live with the 1000cc injectors, but I'd go with the 1200cc's to be on the safe and a better duty cycle.

Here's a couple things for you to read up on.

http://rywire.com/store/faqdesk_info...6e410182f6c602

http://www.rceng.com/technical.aspx
Alright thanks guy. Good info. Ive build Many NA motors and a basic 350whp lsv but now im stepping it up and going for some numbers to get myself in the 10 to sub 10 category.

Whats your opinion on replacing keepers and retainer lockers?
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Old Oct 12, 2010 | 04:03 PM
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Default Re: Flat faced valves for Turbo build?

I would call laskey racing for everything your trying to do for a package deal where it would be cheaper and assembled correctly!

http://www.laskeyracing.com/shop/raceengines.htm
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Old Oct 12, 2010 | 04:09 PM
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Default Re: Flat faced valves for Turbo build?

Originally Posted by EsotericImage
I would call laskey racing for everything your trying to do for a package deal where it would be cheaper and assembled correctly!

http://www.laskeyracing.com/shop/raceengines.htm
I dont need my motor assembled for me...this will be my 7th honda build in about 3 years for my personal vehicle now. Not to mention the numerous builds I have helped with. I will be building my own motor, makes it much more of a personal and fun project to me.
As for deals I have a buddy who owns a shop here and is sponsored by almost every company I mentioned above, He will get me deals on my parts. I am going to look into a Benson sleeved block from laskey though.
Thanks
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