I have a single piston dump valve on my 4x4 cosworth, on idle can here the air from it, i know on a twin piston you cant. Will this single piston type make any difference to the air/fuel mixture?
Which type is better for cossie single or twin??




John.

 

Neither as they're both gay

 

no dumpvalve is best!!!cone filter for chatter!

 

I have chatter also!!!!




John.

 

ive never understood that lol, i know of a 400ish 4by saph that chatters, THEN Dumps?

 

i had a diafram 1 on mine and i lost 10psi of boost about a week ago acording to me gauge, the car felt no slower so i thought me gauge was funked. i replaced me dumpvalve with a twin piston and got me 10psi back. Personally i dont like them but feel i need 1 running 22psi on a t3, when i get me t34 on its going in the bin

 

recirc dumvalve on a cone filter does that sorta thing.

 

So which is better then for the cossie, single or twin??? or when i fit my T34 should i get rid of it altogether??




John.

 

ged rid of it sell it,enjoy the chatter and throttle response!

 

I hear that Dumpvalves are superb for high BHP engines. if u have a chatter goin and not dumpvalve, it can damage the turbo

got that outta Performance ford mag 2001.

 

If you have a dirty great turbo, then maybe so. But then only a Re-Circulating one.

IMO the best Dump Valve is the one in the bottom of the Dustbin.