Aaron B

Hi all, I have just changed the spring my in my forge dv and still getting loads of flutter from the supercharger. What are people running on the rotex kit? Am looking better running a re circ valve?

chrispayze

Got a Sytec atmospheric 25mm and get flutter at high revs. Just ordered a 32mm (I think) dual port Turbosmart so will let you know when I fit that (firstly on to the 25mm boss, then I'll put a 32mm boss if that doesn't help).

Aaron B

Cheers for reply. If you can please report back on the new one

Aaron B

The fluttering is doing my head in

chrispayze

Will do. That reminds me, I must chase the order!

Aaron B

Race Port - Supercharged Applications - Black

Aaron B

This looks good.

markforrester99

Aaron B what forge valve have you got at the moment? Can you post a photo?

Aaron B

This one mark Twin Piston Blow Off Valve with Side Vacuum Nipple | FMDV004A | Forge Motorsport

markforrester99

I tried twin piston type identical to that and they dont work on supercharged applications. The smaller valve will rattle around on idle and the spring even thou they say its soft is still way too stiff.

You would be better off with a turbosmart dual port with a supercharger spring, that way you can use it in recirc mode or vent to atmosphere.