Wastegate Spring Q's

[d90dan]

I've "heard" that you should run a wastegate spring that is rated at least 1/2 of what boost you plan on running.

For example, if you run 24psi then you should use a spring thats rated to be at least 12psi. 28 = 14 min. and so on.

If this is correct, what would happen if I run a spring that's rated to low for the boost I'm running?

Or is this entire concept BS?

 

[TiAL Sport]

it's true, general rule is to keep the boost at no more than 2x the spring pressure

you can get inconsistent boost if you run more than 2x

 

[T Spool]

Where is a good source for the TiAL springs? I just can't see how they can charge $30 + $10 shipping for a spring! I need a 13 or 14.5 psi spring for my 38mm TiAL.

 

[d90dan]

Thanks for the reply tiAL Sport.

Try speediee@aol.com for the springs.

 

[TiAL Sport]

Where is a good source for the TiAL springs? I just can't see how they can charge $30 + $10 shipping for a spring! I need a 13 or 14.5 psi spring for my 38mm TiAL.

Forced performance or Titan motorsports

the spring price is wirth it, it's not an ordinary spring guys, it costs us a boatload to have them made to the specs we ask for

an example is a porsche guy needed a 13psi spring for his race car (he ended up needing a 7psi spring but i will talk about that later...something got lost in kpa to in/hg translation lol) anyway...our highest spring is 12psi...i called up the company that does our springs and to order two (2) 13 psi springs to our spec, it would be $296 for EACH spring if we ordered 50 it would still be $20 each.

so i then set about trying to make a 12psi spring a 13psi spring by trying various methods, like using a 35mm valve seat to compress it a bit more, stepping it up with washers....nothing worked, that damn spring opened when it should @24 in/hg every time.

this is why it is worth the cost

china spring break and change molecular properties with heat, ours do not

 

[Hot Air]

I'm curious...why 1/2? What happens if you run more boost or less boost? Boost Creep? Does it get worse the futher you stray?
Conrad

 

[TiAL Sport]

I'm curious...why 1/2? What happens if you run more boost or less boost? Boost Creep? Does it get worse the futher you stray?
Conrad

not boost creep, but spikes and irregular behavior