B16b head upgrade question


K

Kromer

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Joined
Sep 3, 2013
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Hello everyone I just got my head back from the machine shop and they just put in supertech, dishes black nitrate valves,dual valve springs, retainers, keepers, valve guides on my b16b head. This is my first build and was wondering what difference will I be expecting from this upgrade valvetrain? Also has 725cc injectors from injector dynamics, msd, hondata s300v2, jdm itr 4-1 header, buddy club spec 2 exhaust, and a stock block. Thanks for help..
 
If you're playing Forza 5 you would see gains, but don't expect any from your build. :)
Uprated springs are usually installed to cater for higher RPMs, cams with more aggressive lobes or both. Without them, you'd run the risk of valve float - the springs aren't strong enough to close the valves fast enough.
If you've had the head ported as well, you'd see marginal gains with a tune I suppose. :)
 
As above, uprated valvetrain will not give you any extra power, it will however allow you to run more aggressive cams and higher RPM than stock. This also obviously depends on what the bottom end can cope with as well. So if you leave it as it is you should see lower oil consumption (new guides and seals) but that's about it. TBH these what I call "supporting mods" should be done after you chose your cam/bottom end setup, as on their own they're mostly waste of money. Revving the engine higher on stock bottom end and stock cams does't make much sense, unless you have very short box and desperately need the extra few hundred RPM.
 
Big injector for an n/a b16b? Well you haven't actually said what engine your running but assume it's b16/b18?
As above you won't see too much of a difference in that. Dished valves? So is that lowering compression as apposed to flat faced ones bumping compression?
 
Stiffer valve springs are going to lose you power if anything. They are just needed to run bigger cams, which also need higher compression usually.
 
Thanks for all the feedback, forgot to mention that I have a 75 dry shot zex kit installed as well, lol I ran the car this summer and bent a valve at the drag strip, so instead of just replacing just the valves figured I just do the valvetrain.
 
Still don't think your going to see any gains even with the nitrous, that only splits into oxygen during combustion so?
 
Why did it bend a valve, is your limiter set too high or did you mis shift?
 
Ran the wrong plugs and didn't run on race gas, which my mistake in the first place. I was just tempted to run the quarter mile since I was there ready.
 
Injectors seem too large to me also, the guys who map my car wouldn't map it with those in for that power goal. Everyone seems to be throwing ID1000's in 300bhp cars lol.
 
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