I've found what appears to be a redundant vacuum hose. It is T'd off another vacuum pipe but it doesn't go anywhere. It has what appears to be a restricter held in place with a clip at the open end (i.e. opposite end to the T). When I found it it was poked down in front of the battery, giving the appearance it did something, but i pulled on it and it obviously wasn't attached.

 

Bit of a vague description I know, sorry, Monday is too long! I've checked the vacuum loom diagram and I can't see it. Any help would be appreciated, thanks.

I've found what appears to be a redundant vacuum hose. It is T'd off another vacuum pipe but it doesn't go anywhere. It has what appears to be a restricter held in place with a clip at the open end (i.e. opposite end to the T). When I found it it was poked down in front of the battery, giving the appearance it did something, but i pulled on it and it obviously wasn't attached.

 

Bit of a vague description I know, sorry, Monday is too long! I've checked the vacuum loom diagram and I can't see it. Any help would be appreciated, thanks.

 

I've got exactly the same hose and it appeared after SE did my boost upgrade. Have you had boost jets or similar installed?

 

Steve

It's SE's way of a boost upgrade and bleeding air off, don't mess with the restrictor in the end of the hose, when you upgrade to a boost controller you can rip thatb hose out.

smithy

I've got exactly the same hose and it appeared after SE did my boost upgrade. Have you had boost jets or similar installed?

 

Steve

 

I don't know what the car has had done, it was an import. It has an aftermaket exhaust and filter but that is all I know.

 

The boost gauge does go all the way to the far right, I thought it was supposed to sit between last to marks? Is that just poor OEM gauges?

If you don't have an after market boost gauge, buy one now mate, seriously these boost upgrades are okay-ish but you must have a decent reading of boost otherwise potential serious problems, am talking from experience too.

Gauges start about 45 quid upwards, a wise investment

smithy

It does sound like you've got some sort of jet/bleed style boost upgrade...

 

Is there anything in the small dia. hose under the big intake pipes at the front?

Just had a look under the bonnet and the hard pipes between the intercooler and intake manifold have a connection to this vacuum loom but I can't see anything mounted in them, although hey do dissapear out of sight for a while.

 

I'm going to get a gauge to check the boost. At the risk of sounding like a muppet what is a jet/bleed boost upgrade (I guess it ups the boost, duurr). Is it to do with messing with the dump valve? Is it reasonably safe (in terms of turbo life etc)? What about fueling and det?

basically by venting off air from certain parts of the vacuum system or by restricting airflow in over parts of the vacuum system you can up your boost, its a cheaper way of upping the boost on the car. Although Se's system is more expensive than some boost controllers i believe

 

see this FAQ for more details

 

 

http://www.300zx.co.uk/forums/showthread.php?t=29063

Thanks Mike, questions answered.

 

I just looked at your pictures in Rides section, thinking I might have seen you around sunny Southend and there is a picture of a lunched bottom end. I hope this was not the result of affore mentioned mod!!

not my engine there, just a picture i found,

 

I have a white 300zx, ill be wearing a sheepskin coat and a hat most of the time :D

 

are you coming to the essex meeT? people will look at your car there! look in the events section for the essex meet

are you coming to the essex meeT? people will look at your car there! look in the events section for the essex meet

 

I'd like to come but I have a long standing arrangement (i.e. can't get out of it!!) that weekend.

 

I've heard some people meet at the Halfway House (127) of a Sunday, but I can't find anymore details, don't think it's just a Z thing, more a jap cars meet.