When i got my car it already had a blitz dump valve fitted which doesn't make a bad sound but after a while i found it seized up and wouldn't open so i took it apart and cleaned it but now just a month later its happened again and while it is seized the air seems to come from the air filter instead of the dump valve.

 

So im most likely going to be buying a new one but which brand? i think its fair to say everyone recommends HKS for sound but which model are people using on classics?

Think there is only one hks and that's the ssq but you can change the blades inside to make different noises I think

 

 

 

 

 

 

 

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Forge stuffs pretty good and people on here rate the GFB Valves too

 

 

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Ive got gfb mach 1 and its really good

 

Previously i had a gfb hybrid but when i changed to a fmic its a flanged version so i couldnt use it so i bought the above.

 

Very resonably priced too

http://scoobyworld.co.uk/catalog/product_info.php?cPath=47_61_606&products_id=4003

I bought the gfb fully adjustable one and very happy with it.

3 hours ago, Shaqs77 said:

http://scoobyworld.co.uk/catalog/product_info.php?cPath=47_61_606&products_id=4003

I bought the gfb fully adjustable one and very happy with it.

Same one I've got... good choice :D

Stick to the factory recirc valve, it's the best one for the car, unless you're running 350+ bhp

I run a old skool Bailey's with a uprated piston spring on my classic with a fmic.

 

I assume that you've got your current d.v fitted to the fmic pipework ?

 

If so any of the "generic" fmic d.v will work even if its a different size .

 

If you check the Dia of your fmic pipework dump valve "take off" .

Then buy a silicone reducer, to suit that Dia and the new dump valve entrance Dia .

 

Some where like a.s.h (auto silicone hoses) will probably have them on the shelf .[emoji6]

On 07/07/2017 at 8:01 AM, Amz-P said:

Stick to the factory recirc valve, it's the best one for the car, unless you're running 350+ bhp

What would you recommend if running over 350bhp? 

On 9/3/2017 at 7:00 PM, Turner1990 said:

What would you recommend if running over 350bhp? 

HKS SSQV or Blitz, Greddy Tial etc are all great valves.