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Old 08-04-2009, 10:39 PM   #1 (permalink)
 
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Default d16y8 -> Aftermarket Valve fitment

So I'm got my hands on a spare d16y8 and going to rip it apart and machine it up all purdy and build the internals for a sick turbo kit. It will make its final resting place in the body of a 98 civic si 5spd.

I was looking at Exospeed Stainless Steel Valves to throw into the mix but they are 1mm oversize. Will that cause me any problems with a more agressive cam grind, pistons and valve springs? (all aftermarket)
Or is it a bad idea to have a more agressive cam w/ boost?

Open to opinions as this is my first forced induction build.

Camshaft = Zex (street)
Springs = Zex
Pistons - not sure yet

Thanks

Last edited by Point4Dave; 08-05-2009 at 06:45 AM.
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Old 08-05-2009, 09:29 AM   #2 (permalink)
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Unless you're going to have a good Honda-specific machinist work some magic on the head I'd say the OS valves won't help...this I read on Endyn's own site.
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Old 08-05-2009, 12:25 PM   #3 (permalink)
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1mm oversized is gonna be over kill just get some stock size or max .5mm oversized. the only way i would do 1mm is if i had some wicked cam and headwork done
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Old 08-05-2009, 12:54 PM   #4 (permalink)
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Originally Posted by PPorting View Post
1mm oversized is gonna be over kill just get some stock size or max .5mm oversized. the only way i would do 1mm is if i had some wicked cam and headwork done
so do it!
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Old 08-05-2009, 01:09 PM   #5 (permalink)
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larger the valve the heaver the valve, the stronger the spring you will need. I say go with stock sized valves, if you want upgraded super special crap whatever but stay with stock dimensions. I would say some roller waves would be good or some arias im not a big fan of SRP.
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Old 08-05-2009, 04:58 PM   #6 (permalink)
 
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Thanks all, great info. I'm learning as I go as well.

I have no problems with staying OEM size, but I'm having a trouble with resources. Such as where to buy aftermarket valves, cam, springs and whatnot that will fit together and not cause problems.... almost need an all-in-one online store type deal. I was so used to :::SFR::: Seoulfulracing Online Store-Community from when I built my N/A Tuscani.

I'm open ears to all suggestions.
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Old 08-05-2009, 05:15 PM   #7 (permalink)
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FJT sells great stuff sadly they are moving so they will be down for a few. Ebay is good too.
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