Vaccum Lines 1ggte

**BLK1g-gte** · 28-01-2007, 02:25 AM

You don't have to plumb in to the intake like he did. He just wanted to feed the air from the bleed valve back to the intake instead of the atmosphere.

**turmite** · 28-01-2007, 02:36 PM

BLK 1g-gte, thanks heaps dude should be more of u!
Turmite

**turmite** · 28-01-2007, 02:38 PM

Originally Posted by RAd28

no probs RE: the rep, i might have been wrong, i'm sure i heard someone winge about it before...

as for the problem of not being able to sell anything, it shouldn't take time at all, though if you have any problem tomorrow, i'd suggest PMing JOSHTIX, or toyman75 or even kristy (can't remember her username)

whatcha got to sell btw?

21 rc recon head and stage 1 cam....never did get to use em lol.
Have a good 1

**wilbo666** · 28-01-2007, 02:56 PM

Originally Posted by RAd28

holy fark!!! someone went to alot of trouble with that pic! damn good shot, and exactly what i was trying to describe but was too lazy to draw...

Yeah the pic was done by Johal...has a JZZ10...not sure if he is on the forums much these day...

He's a graphic designer (or something like that

) so he'd want to be good at that drawing stuff

Cheers
Wilbo

**Jag7799** · 02-04-2007, 06:01 PM

Originally Posted by RAd28

holy fark!!! someone went to alot of trouble with that pic! damn good shot, and exactly what i was trying to describe but was too lazy to draw...

Haha, god. I've found my picture again. Who ever thought that little diagram would become so popular

**RAd28** · 03-04-2007, 10:18 AM

who ever thought that someone could have that much time on their hand to draw that! lol... you need a girl!

**Jag7799** · 03-04-2007, 10:20 AM

Originally Posted by RAd28

who ever thought that someone could have that much time on their hand to draw that! lol... you need a girl!

lol, 3d artist mate :-) Doesn't take that long
I have an amazing, beautiful, awesome girlfriend! Although, I must admit that I made that picture when I had a gf that I wanted to get away from as much as possible! haha

**SIKTOY** · 03-04-2007, 04:32 PM

Originally Posted by Jag7799

I have an amazing, beautiful, awesome girlfriend!

yeah she obviously has a computer as well

**Jag7799** · 03-04-2007, 06:39 PM

Originally Posted by SIKTOY

yeah she obviously has a computer as well

hahahahaha

**brett_celicacoupe** · 03-04-2007, 07:42 PM

i only feed one compressor outlet into the boost controller.
i dont see why there should be any pressure difference between between the 2 comp housings.

ive never had issues :S

16psi all day everyday

**TA-022** · 03-04-2007, 08:56 PM

where should i get a feed from for a boost guage?

mic* · 03-04-2007, 09:13 PM

You often see the compressor outlet reference ditched in favor of a manifold reference so that the wastegates are actuated by MANIFOLD pressure rather than compressor outlet pressure.

In this case the wastegate will not open, or else closes quicker, on gear changes so spool up "can" be increased. You will also see more constant boost between hot and cold days where IC efficiency has a minor affect on max boost.

The only advantage of individual actuation of each wastegate is that if one turbo starts to go to shit, the other will still run the way it did regardless. Hypothetically, when running both off a common reference one turbo could be dead/dying, and the other would have to flow all the extra air up to your given boost before the wastegates would actuate = not efficient for the good turbo...

mic* · 03-04-2007, 09:15 PM

Originally Posted by TA-022

where should i get a feed from for a boost guage?

There is a short manifold reference for the fuel pressure regulator which is up the front end of the intake manifold

Most commonly "tee-ed" line for boost gauge.

**brett_celicacoupe** · 03-04-2007, 09:41 PM

Originally Posted by mic*

The only advantage of individual actuation of each wastegate is that if one turbo starts to go to shit, the other will still run the way it did regardless. Hypothetically, when running both off a common reference one turbo could be dead/dying, and the other would have to flow all the extra air up to your given boost before the wastegates would actuate = not efficient for the good turbo...

the boost sensor input line (from compressor housings) will see low boost even if one turbo is farked (imagine cutting a hole in the BC input line?). this will hold both wastegates closed and force at least the good one to spin up big time. the air will probably just loop anyway.

so i say there is no difference

mic* · 03-04-2007, 10:27 PM

If one is farked, its not gonna spin backwards and allow air to loop unless you've thrown an exhaust turbine. I was thinkin more long the line of bearing failure where its coked or semi-coked. This T would just spin a lot less for given exhaust pressure, and contribute less to the intake flow.

Its the "spin up big time" of the other one thats the prob. Say its making 75% of the total engine air instead of its fair 50%. Thats a massive extra flow from the good turbo just to get to the set boost. Thats gonna throw the efficiency off the map before the wastegate opens... (edit) but i see what you mean that this would happen regardless of if theres one line split into two or one to each wastegate.

IMHO tho i wouldn worry either coz id modify it to be plumbed from the manifold, and if one of those baby turbos died, id just go big single... Was kinda scratchin for a reason why toyota would engineer it with two. They usually have reasons for most things. Neat factory vacuum lines have never seemed to be a priority