JDM H22 4th Gen'ers - show us yer vacuum hoses!

'92 Si VTEC · Post by **jjmartin349571** » Mon Jun 03, 2013 4:54 pm

Not sure if you still need to know, but there is a T piece on the hose you marked. I haven't quite got round to removing the resonator yet

I've taken a photo where the T piece is more obvious:

My lawyers will be in touch regarding the copyright issue

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon Jun 03, 2013 4:58 pm

vanzep wrote:yeah as far as i know this is a bit of a grey area - and no one really knows what that extra valve on the ukdm is for

Well, as it's called a "boost valve" I'm gonna go for UKDM's having one of these built in...

(and that's why they make less power)

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon Jun 03, 2013 4:59 pm

jjmartin349571 wrote:Not sure if you still need to know, but there is a T piece on the hose you marked. I haven't quite got round to removing the resonator yet I've taken a photo where the T piece is more obvious:

Spot on, matched exactly - many thanks again!

jjmartin349571 wrote:My lawyers will be in touch regarding the copyright issue

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Mon Jun 03, 2013 11:10 pm

JDM's don't have the air boost valve. Only on H22A1 & H22A2's. Not sure if it was kept on the 5th gens though???

It's in both the UK manuals and US compilation one - section 11-92 (Fuel and Emissions). Copy and pasted from manual:

'Air Boost Valve

Description:
When cranking the engine, the air boost valve supplies additional air to the intake to ease engine starting.'

There is a section through the valve too.

kris_aka_edu · Post by **kris_aka_edu** » Tue Jun 04, 2013 12:04 am

F*ck me this looks complicated Wurly I got no idea what your on about mate! My mates lude had exactly the same problem. On idle it would rev up and down up and down all the time was really weird. But hey that's no use to you!

bucks420 · Post by **bucks420** » Tue Jun 04, 2013 3:03 am

glad your sorted bud

, bit late now but yes im 99% sure it was originally a T piece going off to the resonator, been a few years since i did it.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Jun 04, 2013 10:16 am

nucleustylzlude wrote: It's in both the UK manuals and US compilation one - section 11-92 (Fuel and Emissions). Copy and pasted from manual:

How the heck did I miss that? I read the whole intake system section of Engine and the whole Fuel/Emissions section too Grrr...

Wonder why UKDM cars were thought to need this thing and rest of world didn't?

Now (just because I'm being a

about it) I'm gonna have to work out what difference it makes to the charcoal canister with that being plumbed in somewhere different...

Lude Generation

JDM H22 4th Gen'ers - show us yer vacuum hoses!

Re: JDM H22 4th Gen'ers - show us yer vacuum hoses!