T28 - water plumbing, oil restricters and intake flange.

[~SlideWays~]

I've got a t28 which is going onto my 4agze, currently it has a t25 with no water cooling.

What I need to know is:
- Where to get the correct fittings for the threaded water cooling holes of the t28?
- If I plumb this into the top and bottom radiator hoses will this suffice?
- How do I know what size oil feed restricter to use to suit this turbo (s15 model)?
- This turbo only has a flat flange for the intake, where could I buy the correct flange with round pipe and sealing rubber ring, etc. Would any old turbo place have this?


Thanks in advance.

[Adydas]

Greenlane speed shop did good supplies for pipeing stuff up. Worth looking into at least

[sk1dlet]

as far as i know you don't have to run the water cooling, also if the t28 is like the t3 i have that bolt on bit for the intake that u cud buy i just need it as template to make another flange

[matt dunn]

I've got a t28 which is going onto my 4agze, currently it has a t25 with no water cooling.

What I need to know is:
- Where to get the correct fittings for the threaded water cooling holes of the t28?
- If I plumb this into the top and bottom radiator hoses will this suffice?
- How do I know what size oil feed restricter to use to suit this turbo (s15 model)?
- This turbo only has a flat flange for the intake, where could I buy the correct flange with round pipe and sealing rubber ring, etc. Would any old turbo place have this?


Thanks in advance.

I ran a S15 T28 on my 4AGZE.
Did it not come with the banjo bolts for the side?
Do you know any auto elec's as they are similar to the ones on the vacuum pumps on diesil alternators.
I never run a restrictor in the oil feed on mine.....??
As said before you can make a flange to suit the intake to it.

Out of interest can you measure the diameter of the exhaust wheel where you can see it in the rear housing for me?

Matt

[~SlideWays~]

Adydas: Is Greenlane Speed Shop in auckland? Im in wgtn btw.

Sk1dlet: Not sure if its the same as T3 it could be. I might see if I can get one made.

Matt Dunn: I bought the turbo second hand (never used) so it didn't have any fittings. Yep If I can find the vernia (sp?) I'll measure it tonight. I had a look at the turbo after I posted this thread and it looks like there is a built in oil restrictor anyway. What sort of results did you get with this turbo (what sort of setup?)?

[~SlideWays~]

Also, the reason I ask about the oil restrictor is that my dad recently blew a newly rebuilt turbo after a few 100km of track work. One theory is that it wasn't enough oil because of the restrictor. And I've also been told that with out one it could blow past the seals.

[suberimakuri]

we always run restrictors for T3/4 and the old T25s.
never run water cooling.

[flygt4]

ahhh so thats what turbo you got gav. very good grasshopper
i believe they can push around 200kw atw with the right fuelling and management. and enough boost....

[suberimakuri]

I think the restrictor is like 2mm hole. Best to check with a turbo place, like A1 Turbo's.

[matt dunn]

Yep If I can find the vernia (sp?) I'll measure it tonight. I had a look at the turbo after I posted this thread and it looks like there is a built in oil restrictor anyway. What sort of results did you get with this turbo (what sort of setup?)?

i believe they can push around 200kw atw with the right fuelling and management. and enough boost....

My car runs 200kw atw on that turbo, but that is maxed out.
It runs with the wastegate fully closed at full throttle and still only makes 200kw at 18-19psi.
I do not run any form of restrictor in the oil feed to it at all.

If you could measure it would be good thanks.
I could tell you what size mine is but both my turbo's are away getting an upgrade at the moment.

Matt

[~SlideWays~]

Matt: The measurements of the exhaust wheel on mine is; 40mm for the outer and 51mm for the inner. Is that what you were after? Why do you ask out of interest?

mmm 200kw sounds good to me I'll need some more upgrades before that'll happen though

[Akane]

200kw at wheels with a T28 is totally pushing it. There are other people thinking it can do more, ie: "My cousin's brother got a T28 and it's good for 250kw au!", yeah, probably on a hub dyno :/ Not on a rolling road.

I still strongly recommend you to have water plumbing if you can afford it (I actually have the whole water plumbing fittings right here, I couldn't fit it because my wastegate actuator is in the way). It's about $200-ish all up for the fittings.

Also the restrictor I have now is approx 1.5mm~2.5mm wide, it actually has a "restrictor" internally already, I got mine from GSS as well, it's about $30 that fitting, it's a fitting that allows me to put my oil feed line's fitting onto the turbo (as well as acting as a restrictor). The water lines, it's best to have the water that's post-engine (hot), feeding into the turbo, and then going to the radiator. You don't want the water to be too cold, and the water's primary function is to act as a heatsink so when you turn off your car it minimizes the chance of cooking, the secondary function is keeping it cool (well I kinda shot myself in the foot in saying that coz it needs to keep it cool first ... if you know what i mean).



Have fun.

[matt dunn]

200kw at wheels with a T28 is totally pushing it. There are other people thinking it can do more, ie: "My cousin's brother got a T28 and it's good for 250kw au!", yeah, probably on a hub dyno :/ Not on a rolling road.

Interesting as I have heard that from a few different sources.

Mine is actually at the turbo place at the moment as he reckons that he can change wheels and modify it to make a fair bit more power.

It will be interesting to see the results.

Slideways, Was just asking to compare to my wheels as I am in doubt as to what the turbo is originally off?
Supposedly it's off the same as yours.

[Akane]

With a different wheel upgrade it won't be a "plain T28" anymore, but yeah, factory T28's ain't really that great.

[CozmoNz]

difference between a S15 T28 and a GTiR T28 in terms of power output?

[Bazda]

A plate cutter can make the flanges for both inlet and return.
You want to tap the inlet flange to 1/8npt and put a 1/8npt to -3 fitting into that and run -3 braded lines and fittings.

For the return I would weld a 14-19mm i/d diameter pipe heading towards the sump and weld a fitting into ur sump to suit and use some blue braded hose to fit them together with hose clamps.