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3tech valves
Topic Started: Jan 6 2011, 05:42 PM (771 Views)
cabman
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Getting ready to go through my head and plan on using 3tech's polished s/s exhaust valves. Has anyone used these in an otherwise stock application or with a minor polish and gasket match. What was your observations as for as performance and mileage?
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Johnny Mullet
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Hi-Tech Redneck

I use these in 95% of all my builds. Observations were that the car ran again because the old valves were burnt.
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Car Nut
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Excellant Observation JM! Seriously tho, what's the difference between the SS black (non polished) & SS shiny valves? Shiny for those wanting the chrome look?
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92blumetro
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i have installed a complete cyl head from mike(3 tech)stainless oversize ported polished 6+gear&cam great combo.imo ssvalves last much longer,take more heat&abuse.also my exp from lpg motors,ss doesnt "burn" as easy
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cabman
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I would really have liked to get a 3tech head package but not enough money right now. I also have this dream of a 16v 1.3 for my convertible. Car Nut has kinda stated my question in a different manner. If the non polished s/s is a replacement valve what will the polishing help with? Flow? Carbon buildup? I have asked four engine builders in my area and received four different answers.
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Car Nut
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That's what I'm talkin' bout. Both are SS but one is polished. Major advantages???? 3Tech, you out there? Inquiring minds would like to know.
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Murf 59
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I use 3Techs. They work great. I have used the other black SS one's and can't tell the difference, yet. But I have not torn either head apart yet. But I am trying to support one of the guys that helps support the Metro world.
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cabman
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They only other source that I have found is Manley. They offer their Port Flow valve. I shows pretty decent improvement on flow below the .300 mark but they are almost twice the price and the stem diameter is .2165 instead of .2144. You would need to spend a bunch more money to turn the valve down or do something with the guide. By time you do that you will probably have a very expensive valve compared to the 3tech.

Not technically a valve comment but I would love to see someone come out with a 12 valve head for the g10. :stoner
Edited by cabman, Jan 6 2011, 10:02 PM.
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slander
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cabman
Jan 6 2011, 10:00 PM
They only other source that I have found is Manley. They offer their Port Flow valve. I shows pretty decent improvement on flow below the .300 mark but they are almost twice the price and the stem diameter is .2165 instead of .2144. You would need to spend a bunch more money to turn the valve down or do something with the guide. By time you do that you will probably have a very expensive valve compared to the 3tech.

Not technically a valve comment but I would love to see someone come out with a 12 valve head for the g10. :stoner
The guides can be reamed to a larger stem size. I do it quite often with older engines with +0.003" valve stem sizes. Not sure how far these guides can be taken on a G10/G13 however.
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snowfish
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Basic GearHead

cabman
Jan 6 2011, 10:00 PM
Not technically a valve comment but I would love to see someone come out with a 12 valve head for the g10. :stoner
I'm wondering how one could fit 4 valves in there? :coffee

These are 5mm Oversized Polished Stainless
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Pretty much fills the entire combustion chamber.

Maybe 4 Baby Valves? :dunno Seems one would end up with decreased flow. :news
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Coche Blanco
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snowfish
Jan 7 2011, 11:54 AM
Maybe 4 Baby Valves? :dunno Seems one would end up with decreased flow. :news
Yeah, they wouldn't/couldn't be the same size. :P
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cabman
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I might be wrong but doesn't the 1.3 have close to the same bore as the 1.0? I happened to run across this.
http://www.teamswift.net/album_pic.php?pic_id=12696
http://www.teamswift.net/viewtopic.php?f=27&t=23246&start=25
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Coche Blanco
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Yep, that guy was in (insert Spanish speaking country) and they had a 1.0L limit for the engines in the rally he raced.
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cabman
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the 1.3 would be so much simpler but who said we were about simple. where's my hacksaw? :lol
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