Wastegate vaccum hoses?

[Ca_Silvia]

I have 2 vaccum hoses comming off the wastegate that merge into a "t" fitting and then look like they go into the intake tube, is that correct? Theres a hole in the intake tube that look like they go there can anyone confirm this.I'll try to post pictures when i have a chance.

[c-rad]

I have 2 vaccum hoses comming off the wastegate that merge into a "t" fitting and then look like they go into the intake tube, is that correct? Theres a hole in the intake tube that look like they go there can anyone confirm this.I'll try to post pictures when i have a chance.

You only use one vacuum hose. Attach the vacuum hose from the wastegate actuator to the nipple on the compressor housing.

[NeedCAforS13]

factory it uses two, but just wrap one vaccum line from the nipple on the sie of the turbo to the wastegate like chris said. You'll also have to plug off your stock line so you don't have a vaccum/boost leak.

Sean

[Ca_Silvia]

one

[Ca_Silvia]

TwoThe tee looks like it plugs into the intake tube (cause theres a hole in the tube) but the tee end is too small to fill the hole.

Sorry pics are so big

[NeedCAforS13]

ok ok ok

here's a CA18 stock turbo OFF the car. see the vaccum hose coming off the front of the turbo. Connect that to the nipple on the gold colored cylinder (your wastegate)



if thats what your turbo looks like, done deal. block off any other vaccum lines.

however if your turbo DOESN'T look like that just run a vaccum line from the wastegate to the nipple on the side of the intake manifold (between the 1st and 2nd intake runners).

Sean

[NeedCAforS13]

TwoThe tee looks like it plugs into the intake tube (cause theres a hole in the tube) but the tee end is too small to fill the hole.

Sorry pics are so big

were you running the car with the tee open like that? if so that would explain your high psi. with a leak on the line going to your wastegate you weren't supplying enough pressure to open it up. hence 13psi of boost.

Sean

[Ca_Silvia]

interesting how that is the stock turbo, heres mine. What turbo is this if it isnt the stock one you have, it says GARRETT A/R 60 M24.

In this picture you can also see the 2 vaccum hoses (the ones from before), one on the wastegate the other on the inlet peice from the intercooler.

[Ca_Silvia]

So now can i still just block both vaccum lines off and run one hose from the wastegate nipple to the tee by the intake manifold?, if so which one. Here a pic of what i see.

Sorry once again my photo editing software isn't working.

[tineira]

None of those, the pressure/vacuum line that goes to the wastegate actuator must be connected between the turbo and the throttle. Also there is a reason why the normal pickup is from the turbo itself, the shorter the line the better. It seems that longer lines may promote boost spikes

[float_6969]

1st- You my friend are quite lucky. I'm fairly certain that is a T28 of some sort, probabally one from an S14 SR, though it could be an S15 SR T28. Can't really tell unless you look at the exhaust side.

2nd, There is a nipple on the outlet of the turbo that someone has added. Run a hose from that nipple to the wastegate actuator.

[float_6969]

Here's another pic...

[c-rad]

Nah, it looks like an SR T25. If the compressor housing has a .80 on it, its an SR. If the A/R is .60, then it's a T28.

[float_6969]

I think it is a .60, look at the first picture. And the SR T25 has a staggered inlet, the pics he's got up doesn't have that.

[Ca_Silvia]

Sweet thanks, i will make the "u" connection, but WHAT ABOUT THE TURBO!!?? Its not stock? I can take more pictures if it helps, but the exhaust side is pretty hard to get a decent picture.

[NeedCAforS13]

thats not stock for sure. stock uses a slip fitting on the turbo inlet like I pictured. That apppears to be an s14/s15 gt28. Sweet find.

Sean

[float_6969]

By exhaust I meant, with the O2 pipe removed. It's not worth all the trouble to find out if it's an S14 vs. S15, as they are pretty similar. I would assume an S14. Still a great turbo for this motor.

[Ca_Silvia]

By exhaust I meant, with the O2 pipe removed. It's not worth all the trouble to find out if it's an S14 vs. S15, as they are pretty similar. I would assume an S14. Still a great turbo for this motor.

Sweet, i guess i thought it was stock but ohwell not a bad thing in this case!!. That does mean i have a not stock manifold on there too right, kinda has to be with a t28 and all right.

Thanks for all your help guys

[NeedCAforS13]

t25 and t28 is the same flange... stock manifold.

Sean

[Ca_Silvia]

So what is the difference between the two, in other words why change from a t25-t28?

[burnout 180]

T25<T28t28 is bigger and flows more air and supports higher boost but the bigger the turbo the greater the turbo lag which really isn't much of a factor for a t28 but it depends on the specs of the turbo.

[NeedCAforS13]

^ winner of longest run on sentence of the day award.

but he's pretty much said it all. the t28 is a bigger turbo but it still uses the same flange. a t2 flange.

Sean

[Ca_Silvia]

are the t25/t28 ball bearing turbos?

[NeedCAforS13]

well, that depends on which t25 or t28. you CAN get ball bearing turbos on pretty much any size from garrett.

however if you're asking about s13/s14/s15 turbos here's the run down:

S13 CA18DET: T25 non ball bearingS13 SR20DET: T25g non ball bearing but bigger than a CA turboS14 SR20DET: GT28 w/ ball bearing centerS15 SR20DET: GT28 w/ ball bearing center and slightly different specs than the s14 t28. some people say its a better turbo than the s14 t28.

although in reality the s14/s15 turbos perform almost identically.

Sean

[silviadrifta]

not all s14 t28's are ball bearing

[NeedCAforS13]

in fact they are. I've seen the random internet poster like yourself say that, but I've yet to come across anyone with an actual in their hand non ball bearing s14 turbo. pulsar gti-r t28 is a non ball bearing, so maybe that leads to some confusion.

Sean