Print Page - Chattering

Title: Chattering
Post by: JapSam on January 19, 2006, 08:16:33 PM

Which are the best air filters to get an rex fluttering like a cossie when letting off.
Do rx7s run recirc dvs as standard ? where abouts are they, has anyone else done this on an rx7 ?

Thanks
Sam

Title: Chattering
Post by: asp on January 19, 2006, 09:10:13 PM

there are 2 bov\'s on a fd,there just above the turbo\'s,thay make very little nose as there a recirculating type,lots of people have changed them.

Title: Chattering
Post by: rx7veilside on January 19, 2006, 09:55:24 PM

that fluttering is cossies that dont run a dump valve and is the air flowing back over the turbine blades..not a good idea for long term thats why cars have dump valves

Title: Chattering
Post by: Jono FD3 on January 19, 2006, 10:33:56 PM

Quote from: aspthere are 2 bov\'s on a fd,there just above the turbo\'s,thay make very little nose as there a recirculating type,lots of people have changed them.

Only one is a Blow off valve! This fits on to the "Y" pipe where the pipes from the turbos join into one, the other is a pressure relief valve........ something to do with the sequential turbo set up, so I\'m led to believe?!!!

Jono

Title: Chattering
Post by: JapSam on January 20, 2006, 12:15:29 AM

So the question is can you get compression surge on an rx7 ? as that noise makes me go weak at the knees ! i hate the sound of dump valves

Title: Chattering
Post by: Red and Single on January 20, 2006, 08:42:18 AM

Yes you can....buy a single turbo, fit external wastgate, bobs your uncle :)

Title: Chattering
Post by: McCARTHY on January 20, 2006, 09:24:55 AM

is the chattering not the waste gate noise coming back up through the filter once you have let off ??????

Title: Chattering
Post by: fro on January 20, 2006, 09:46:08 AM

it\'s the compressed air in the inlet (post turbo) trying to escape through the turbo. When you close it\'s path into the engine by lifting the throttle, the air has to go somewhere.
A lot of people (including many journos) refer to it as wastegate chatter but it\'s simply not.

Title: Chattering
Post by: RAW on January 20, 2006, 09:46:50 AM

i get the chattering noise from my Greddy BOV. it\'s definately the valve as i can adjust the volume with the bolt on top.

Title: Chattering
Post by: gsb876 on January 20, 2006, 03:37:18 PM

Quote from: Red and SingleYes you can....buy a single turbo, fit external wastgate, bobs your uncle :)

Mine has this :Thumbs-up

Title: Chattering
Post by: asp on January 20, 2006, 04:38:11 PM

Quote from: Jono FD3Only one is a Blow off valve! This fits on to the "Y" pipe where the pipes from the turbos join into one, the other is a pressure relief valve........ something to do with the sequential turbo set up, so I\'m led to believe?!!!

Jono

a bov is a pressure relief valve,i had twin bov\'s b4 i went single,

Title: Chattering
Post by: BlitzBoy on January 20, 2006, 04:58:20 PM

I luv my compression surge noise on my single, sounds like a group "B" Rally car

Mazda Rotary Club

General => General Technical => Topic started by: JapSam on January 19, 2006, 08:16:33 PM