the guy from the performance centre says i may have a leak and thats why im not getting the whoooosh am i right in thinking that its an air leak and replacing my hoses will sort this i was thinking of puting silicone air hoses in there are also the thin hoses conecting the dump valves maybe its them thanks

stephen

the guy from the performance centre says i may have a leak and thats why im not getting the whoooosh am i right in thinking that its an air leak and replacing my hoses will sort this i was thinking of puting silicone air hoses in there are also the thin hoses conecting the dump valves maybe its them thanks

stephen

 

probably going to be as simple as tightening up the jubilee clips on the pipes to the dump vavles

do you have a picture of the dump valves?

how do i pot pictures? they are japanese things "arc" i believe

Posting Pictures ;)

 

http://www.300zx.co.uk/forums/showthread.php?t=116565

pics of dump valves

where? goto http://www.photobucket.com and setup a free account, then you can upload them really quickly. then transfer the 'img' address to the message box below and it'll show up mate

at last iv done it the dump on the left seems to have dodgy hoses on the top i checked the jubilees and they all needed tightenedso iv done that is it at all possible that the dumps are broke hope not

stephen

funny i have exact same wheels as you zx eyes what arethey called guy said bbs but i dont have the bbs badge in the centre

funny i have exact same wheels as you zx eyes what arethey called guy said bbs but i dont have the bbs badge in the centre

 

Mine are AXE AP30's

 

I know them well cos i bought 3 wheels off ebay and had a bitch of a job finding a fourth lol :wack: But hey ho i found it, refurbed how i want em and i'm well happy with em :D :dance:

they are recirculating dump valves mate, note that there is no trumpet, instead there is the fixing you attach a hose too which is normally used to plumb back to the intake

Is yours a manual or an auto ? An auto wont do it anyway....

Hi Tony.

 

Mine is an auto and sometimes it does do it, mine has Apexi bov,s

 

 

 

Cheerz

 

Chris.

im not sure what this all means are the dumps broke or not? should i be getting the whooosh? my cars manual

Dump valves that 'whoosh' are supposed to be atmospheric dump valves, meaning that the sound comes from excess pressure being released into the atmosphere when open.

 

Yours are recirculating dump valves as opposed to atmospheric dump valves.

 

Recirculating dump valves are supposed to be plumbed back into the intake, like standard dump valves.

 

The reason yours dont make much noise is because they are not supposed to, they will but not like the 'whooosh' you are hoping for id imagine.

 

Did they used to make a loud noise and now they dont?

Yes mate,

if yours is a manual you should be getting the sound,go to a reputable z mechanic in your area and get him to check it out.

 

Cheerz

 

Chris.

no Pete not long bought the car, so are they fitted correctly from what you can see? im surprised the guy at performance centre didnt pick up on this he didnt recognise the make right enough said they were japanese things

they look like they are fitted ok, so long as the original ones have been removed and the little hose from the top goes to balance bar.

 

But because they are not meant to make any noise dont expect too much from them bud.

Personally i would replace them with proper atmospheric dump valves.

 

If you need to find the originals, they are under the centre panal between the headlights, under the air filter assembly, either side of the auxillery fan.

I can take a picture of some if you need one.

By the looks of those mate those are ARC bovs and SHOULD be dumping to atmosphere, what noise are they making? I dont think ARC's make much of a noise anyway but you should be getting some form of woosh noise.

hi there the car sounds quite awsome an performs like a rocketship i dont know the bhp but it needs NO more. I did want the dump valve whooosh however so am slightly dissapointed yes they are "arc" they look like theyve been on it for a while it has a very cool new looking blitz cone air filter thingy saw same on ebay for 200 odd quid that will be making a noise too do you think its worth while replacing the hoses i may go back to the performance centre guy seemed certain it should be whooshing

no, the hoses are fine.

 

If you want the whooshing noise though mate, replace the hoses with standard hoses and fit different dump valves in the original location.

 

There are some really loud ones on ebay for £50

 

See thread : http://www.300zx.co.uk/forums/showthread.php?t=123283

cheers pete and everyone else youve all been very helpfull

steve