Hi everyone,
I'm doing a rebuild of my 20v BT.
My next step is to buy new valves.
As I already got TODA spring, what valves would you recommend with that valve spring ? Stock valves, Supertech valves (has been told they are noisy), Ferrea valves or other brand ??
I'm still running stock camshaft too.
Thanks for your help.
20v BT valves choice
- oldeskewltoy
- Club4AG MASTER
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- Joined: Wed Jan 09, 2013 4:44 pm
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Re: 20v BT valves choice
izanagi24 wrote:Hi everyone,
I'm doing a rebuild of my 20v BT.
My next step is to buy new valves.
As I already got TODA spring, what valves would you recommend with that valve spring ? Stock valves, Supertech valves (has been told they are noisy), Ferrea valves or other brand ??
I'm still running stock camshaft too.
Thanks for your help.
same thing I answered @ aeu86.org.....
Why do you want new valves??
unless your plans include building this for substantially more power, stick with the OEM valves (known quality).
OST Cyl head porting, - viewtopic.php?f=22&t=300
Building a great engine takes knowing the end... before you begin
Enjoy Life... its the only one you get!
Building a great engine takes knowing the end... before you begin
Enjoy Life... its the only one you get!
Re: 20v BT valves choice
oldeskewltoy wrote:izanagi24 wrote:Hi everyone,
I'm doing a rebuild of my 20v BT.
My next step is to buy new valves.
As I already got TODA spring, what valves would you recommend with that valve spring ? Stock valves, Supertech valves (has been told they are noisy), Ferrea valves or other brand ??
I'm still running stock camshaft too.
Thanks for your help.
same thing I answered @ aeu86.org.....
Why do you want new valves??
unless your plans include building this for substantially more power, stick with the OEM valves (known quality).
Because after checking the size of the valve stem (according to the FSM), mine doesn't reach the size recommended. They are thinner.
- oldeskewltoy
- Club4AG MASTER
- Posts: 2184
- Joined: Wed Jan 09, 2013 4:44 pm
- Location: Portland, Oregon
Re: 20v BT valves choice
Stem and guide "work" together..... the same FSM lists maximum valve/guide clearance. I'd recommend using that before you condemn the valves.
Exhaust valve - 0.1mm (.0039")
Intake valve - 0.08mm (.0031")
If they still are too small..... the choice is yours... replacing OEM valves, with OEM can get pricey, or you go oversize with Supertech....
As to Supertech... OEM valves the intake stem is larger, but with the Supertech the exhaust stem is larger........ not sure why that is....
Exhaust valve - 0.1mm (.0039")
Intake valve - 0.08mm (.0031")
If they still are too small..... the choice is yours... replacing OEM valves, with OEM can get pricey, or you go oversize with Supertech....
As to Supertech... OEM valves the intake stem is larger, but with the Supertech the exhaust stem is larger........ not sure why that is....
OST Cyl head porting, - viewtopic.php?f=22&t=300
Building a great engine takes knowing the end... before you begin
Enjoy Life... its the only one you get!
Building a great engine takes knowing the end... before you begin
Enjoy Life... its the only one you get!