SuperTech Valvetrain
we have installed over a hundred Evo heads with the Supertech spring kit, and besides at first (3-4years ago when the valve seal issue came about) have not had a issue yet. (the Honda camp is not a good comparison. we have not seen the same issues associated with them with the Mitsu kit...these are perfectly safe!)
You just have to use a valve seal for the Honda LS or Supertech sells the correct seal as well. If you don't the inner spring will rub on the seal and destroy it. Important to be armed with knowledge of parts selection.
In deciding to rebuild the head completely with guides, valve job and such we always recommend it to our customers. The stock guides are cast iron, and steel retains heat. So, you can take heat out of the valve by running the bronze. And although bronze does wear faster, bronze will not break apart and end up in your engine like a cast guide will. So you free up a little power(very little) by reducing friction, and get some safety in there as well. You will also pick up a little flow and safety with a good valve with accouterments like thicker margins, and more heat resistant materials make it a good choice if your wallet allows it.
You just have to use a valve seal for the Honda LS or Supertech sells the correct seal as well. If you don't the inner spring will rub on the seal and destroy it. Important to be armed with knowledge of parts selection.
In deciding to rebuild the head completely with guides, valve job and such we always recommend it to our customers. The stock guides are cast iron, and steel retains heat. So, you can take heat out of the valve by running the bronze. And although bronze does wear faster, bronze will not break apart and end up in your engine like a cast guide will. So you free up a little power(very little) by reducing friction, and get some safety in there as well. You will also pick up a little flow and safety with a good valve with accouterments like thicker margins, and more heat resistant materials make it a good choice if your wallet allows it.
The Kelford 272 with Supertech is a great setup and very common amongst street cars.. I havent seen any supertech seal issues as of yet but we use the provided seals with each spring kit,,
Mike
Mike
What can I rev to with a Set up like that? Safely
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
What can I rev to with a Set up like that? Safely
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
What can I rev to with a Set up like that? Safely
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
With an FP red you have no worries about revving the car.. The turbo doesnt make power at 9k anyway.. You will be revving the car to where you find the power start to drop off.. Well before 9k for sure..
Mike
What can I rev to with a Set up like that? Safely
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
or
Do i have to have other work done to the motor to rev higher?
Is it even worth to rev it higher? at a Stock Turbo? Eventually i plan on going with a FP red.
Sorry for all the questions guys. But I rather know than be sorry later on.
rool: lol. Thanks for the info. Anything else done to the Head?
Evolved Member
Joined: Jan 2008
Posts: 874
Likes: 0
From: Australia
i just swapped out my BC singles to supertech duals, heard to many horror stories about the BC's breaking, especially when running a fairly agressive cam. I was only taking the motor to 8500 as after that it didnt sound happy with the BC springs. Theres some pics of the install here
Evolved Member
iTrader: (33)
Joined: Jul 2002
Posts: 5,313
Likes: 1
From: Raleigh, Transplanted from Toronto, Canada
I've never ben a fan of BC products (esp. coming from the Honda camp). I run Kelford 272's with Supertech duals and retainers. No problems here. I don't beat my car every day but when I do its 29 pounds of E85 goodness. I spin her up to about 8-8.5k
Nice to hear! Thanks!
