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Old 08-19-2009, 01:33 PM   #1
181stLeader
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Default Are supertech valves train components any good?

I have been looking and researching components for my moderate build and I have come across supertech valve train components. They are priced pretty well, but are they any good quality wise? Anybody with experance with them could could chime in that would be great.
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Old 08-19-2009, 01:42 PM   #2
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They are very good. I would recommend them over BC, but not as much as I would encourage ferrea.
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Old 08-19-2009, 01:46 PM   #3
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I had Supertech +0.5mm SS valves (not inconel), dual valvesprings, and TI retainers. Three valves dropped in one cylinder and took out the whole longblock. Nobody really knows why.

Many people swear by Supertech. My next motor will most likely have Ferrea valvetrain components.
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Old 08-19-2009, 01:50 PM   #4
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I was about to buy the supertech dual valve springs, when the supplier told me they've had a large number of fitment problems with them and no longer sell them. I then went to order the Manley dual valve springs, and soon found out that Manley discontinued their dual springs because of fitment problems...in a fit of rage, I ordered the Ferrea dual springs

I haven't heard anything bad about the supertech valves (other than the nitrided exhaust valves occasionally having heat-related problems), and I just installed a set in my heads (with the inconel exhaust valves), so I'll soon see how they hold up.
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Old 08-19-2009, 01:51 PM   #5
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Quote:
Originally Posted by jays05 View Post
I had Supertech +0.5mm SS valves (not inconel), dual valvesprings, and TI retainers. Three valves dropped in one cylinder and took out the whole longblock. Nobody really knows why.

Many people swear by Supertech. My next motor will most likely have Ferrea valvetrain components.
I guess there's no way of knowing what started the problem is there...if the keepers dislodged and allowed the valve to drop, valve stem broke in half, etc. That sucks.
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Old 08-19-2009, 01:52 PM   #6
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I have the Supertech SS Intake valves +1MM and Inconel Exhaust valves +1MM. Installed in my built heads with BC Cams/Springs/retainers. I used them exclusively in my other builds with other cars and never had a problem with them. A lot of engine builders swear by them so I figured they were still good.
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Old 08-19-2009, 02:55 PM   #7
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Quote:
Originally Posted by wrxwhat View Post
They are very good. I would recommend them over BC, but not as much as I would encourage ferrea.
BC valves are Supertech valves...all of my BC valves had the nice little 'S' logo on the tips of the stems.
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Old 08-19-2009, 03:48 PM   #8
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Quote:
Originally Posted by Homemade WRX View Post
BC valves are Supertech valves...all of my BC valves had the nice little 'S' logo on the tips of the stems.
lol, there you go. Buy ferrea!
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Old 08-19-2009, 03:56 PM   #9
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I went with Ferrea just because a freind of mine droped a supertech valve within months of a build and they told him your supposed to change them after so many passes.
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Old 08-19-2009, 04:21 PM   #10
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Quote:
Originally Posted by SLOWSUBY View Post
I went with Ferrea just because a freind of mine droped a supertech valve within months of a build and they told him your supposed to change them after so many passes.
**** supertech.

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Old 08-19-2009, 04:41 PM   #11
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i dropped a valve at idle (f ross pistons and that builder for not claying the motor) and i was pissed. it was fixable. you must have bean ready to explode. lol
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Old 08-19-2009, 04:48 PM   #12
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Mine dropped while rolling away from a stoplight in 1st gear, and yes it pissed me off just a little. Engine #5 is gonna be sick though!
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Old 08-19-2009, 04:54 PM   #13
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glad to see you decided to keep your car and fix it. good luck
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Old 08-20-2009, 01:01 AM   #14
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Quote:
Originally Posted by jays05 View Post
Mine dropped while rolling away from a stoplight in 1st gear, and yes it pissed me off just a little. Engine #5 is gonna be sick though!
Who you gonna have builg this one?
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Old 08-20-2009, 11:12 AM   #15
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hmmm, maybe I'll just stick w/ stock valve train. I'm not going to be pushing tons of power since this will be my first build.

STi crank in a 2.0 block
STi rods (maybe a set of eagle forged rods, haven't decided yet)
forged pistions
.020 overbore
Light P&P
FP18g turbo
maybe an EWG
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Old 08-20-2009, 11:13 AM   #16
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For an 18g I wouldn't bother with cams, valves, etc.
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Old 08-20-2009, 11:15 AM   #17
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just dropped a valve today cruising at 70mph on cylinder 2
yay for supertech
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Old 08-20-2009, 11:33 AM   #18
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wow that sucks
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Old 08-20-2009, 11:52 AM   #19
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Quote:
Originally Posted by hybridpatient95 View Post
just dropped a valve today cruising at 70mph on cylinder 2
yay for supertech
sorry to hear that man. i'm glad I didn't replaced my valves with supertech. if I'll have a spare engine, I'm planning on ferrea valvetrain and GSC cams and swaintech coated heads
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Old 08-20-2009, 11:56 AM   #20
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Ferrea can drop too and I've personally taken apart the damage from a set.
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Old 08-20-2009, 11:59 AM   #21
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Quote:
Originally Posted by 3MI Racing View Post
Ferrea can drop too and I've personally taken apart the damage from a set.
that sucks man. what was the problem of the dropped ferrea? wrong installation or parts combo?
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Old 08-20-2009, 02:33 PM   #22
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Well, I can say that the stem was still there

Installation was correct but the valve itself failed...only one.

It was on an Evo.
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Old 08-20-2009, 02:36 PM   #23
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MANLEY PERFORMANCE is what I like....lol
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Old 08-20-2009, 03:19 PM   #24
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Excuse me what are the +1.0mm valve for ?
Is it +1mm in lenght or in head size ?
Dual spring is for reving high i guess , can we say that single spring should be ok for 7400 rpm max ?
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Old 08-20-2009, 03:28 PM   #25
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Quote:
Originally Posted by vulpina View Post
Excuse me what are the +1.0mm valve for ?
Is it +1mm in lenght or in head size ?
Dual spring is for reving high i guess , can we say that single spring should be ok for 7400 rpm max ?
+1mm diameter at the end of the valve (not the stem), for ported heads with a +1mm diameter valve seat.

Stiffer valve springs (and dual valve springs) are to keep the top of the valve/bucket planted against the cam lobe at high RPM. Valve float is when the valve's inertia is too much for the spring to control at high RPM, and the valve/bucket lifts off of the lobe of the cam when trying to close. If the float is bad enough, the valve can hang out for too long trying to close, and the piston comes up and smacks it, bending the valve and possibly destroying both the piston and the head.

For 7400 RPM I would get aftermarket valve springs and titanium retainers (reduces the inertia of the valve assembly, allowing the spring to control it better). Single springs would be fine at that RPM, no need for dual unless you want it.
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