20v 4rage turbo

[KwS]

Hello

Ive done a lot of research on this now, and im starting to write up plans and get parts together, to turbo my silvertop. Ive got a couple of questions though, that i cant really find a simple answer to.

First off, this is a real simple one.... The turbo oil drain and feed. I assume oil drain is into sump, and iirc it needed to be above oil level? And where is it best to get the oil feed from? Could i get it from say, a sandwich plate on the filter? Or is there an easy way to get it from the block or head?

Ive read the plenum cant hold pressure, is that correct? Ive budgeted for replacing it, but in the early stages it would be nice to be able to use the standard one.

I know most people that turbo 4ages usually do the ZE, which has an ecu that can obviously cope with boost. What do 20v peoples usually do in regards to an ECU? i want to go link eventually, but thats a while off. Will the silvertop ecu handle boost? If so, how much?

Whats a reasonably safe boost to run on an unopened silvertop? 5psi? I do plan on building up a forged engine while running this one, but dont want it to die too quick. The AFRs will be checked with my mates fancy innovate wideband to make sure im not leaning out.

Once again, at those sort of boost levels, how will the stock injectors cope? Best to upgrade them?

Cheers

[tsoob]

hey man what is your budget? based on that it will be eaiser to recomend what route to take.

oil feed off the block is common.
You will need some kind of intake plenum made.

What bottom end are you going to run?

really first things first what can you afford to spend?

Link g4 would be ideal

[Adoom]

I can answer two of your questions....
The oil drain has to end above the oil level, or the oil will back up in the pipe stopping it from draining.

My factory(CA18ET) turbo oil supply is from a T-Piece where the oil pressure sensor screws into the block.

[thegreatestben]

Have the same setup on my 7a, t piece into the block with oil pressure sensor.

[matt dunn]

I know most people that turbo 4ages usually do the ZE, which has an ecu that can obviously cope with boost. What do 20v peoples usually do in regards to an ECU? i want to go link eventually, but thats a while off. Will the silvertop ecu handle boost? If so, how much?

The standard one will not do boost.
There is a Megasquirt option on here that may be of some use,
but if the goal is link in the end, then your better to do that first up.

Whats a reasonably safe boost to run on an unopened silvertop? 5psi? I do plan on building up a forged engine while running this one, but dont want it to die too quick. The AFRs will be checked with my mates fancy innovate wideband to make sure im not leaning out.

As long as you have an intercooler and a good tune,
you can run reasonable levels.
I am sure that I know of one that was at 15psi on stock stuff,
but 5 to 8 would probably be more acceptable.

Once again, at those sort of boost levels, how will the stock injectors cope? Best to upgrade them?
Cheers

Yup to upgrade, but they may take a few psi of boost,
but therer are heaps of injectors that are better at around the 250-300 a set mark.
Turbo MR2 and GT4, early 1JZGTE and 2JZGTE.
all around 380 to 480ish over the 295cc??( i think) stock ones.

[gasman]

i got a plenum you can buy that will hold up to 32psi

[KwS]

ive worked out itll cost about 2500 all up for all the bits, and ill be doing the work myself. That doesnt factor in an ecu though.... which is bit of an ass, having to replace that straight up. Im not really too sure what my budget has to do with the questions i asked though.

Ill be getting everything bit by bit, as i go along. If i need to upgrade other things, then ill wait till i have those parts before putting it all together.

I intend to run a subaru legacy water to air intercooler setup. Should keep intake charge plenty cold for what i intend to do.

I assume the engine already has a oil pressure sender on it somwhere, for the idiot light. Could i remove that and add a T there for the feed?

Ive looked on the link site, and i cant seem to find one... so i assume it doesnt exist, but has anyone seen a plug-in G4 for an ae101?

[KwS]

i got a plenum you can buy that will hold up to 32psi

I would love that plenum, but at this point in time i cant really afford it. Ill keep an eye out for when i have more money and might be in touch. I assume that'll work with the silvertop ITBs and trumpets etc (as i see its on a blacktop head)? I could probably run that plenum NA.... just for bling factor

[molex]

Have a look at This

Plug and play (as in you don't have to modify your loom) and has all the features you'll be wanting for a pretty awesome price. $650 shipped.

Bit easier to swallow than ~1500 for a link G4 and loom.

Any reason you're going for the wta setup over a much less complicated front mount air to air setup?

[ChaosAD]

Have a look at This

Plug and play (as in you don't have to modify your loom) and has all the features you'll be wanting for a pretty awesome price. $650 shipped.

Bit easier to swallow than ~1500 for a link G4 and loom.

Any reason you're going for the wta setup over a much less complicated front mount air to air setup?

Ive got one of those sitting here.
The pin count is right for the silvertop, but the pin sizes are different on the silvertop dash plug so it wont fit.
Plugs up to the blacktop alright though.

Also allow for gst incase it doesnt slip through customs as it is over $400NZ.

[tsoob]

Im not really too sure what my budget has to do with the questions i asked though.

based on your budget you can make the decisions on what is most important. What kind of power do you hope to make?

if you were to spend the 2500 + the cost of an ecu and tune you should end up in the 140-160 kw wheels range without too much difficulty if you can do plent of the work yourself and don't take 2 many short cuts.

[mr30%jr]

ive heard silvertop ecus cope with boost fine as they are AFM, just up the injector size. depends on how rangi you wanna be i suppose too bad wayne hates toyspeed he really is pretty knowedgeable on 4agtes and how to do them REALLY cheap

[MR2BOY23]

What turbo are you planning to use?

[rollaholic]

i think wayne is actually banned from TS also

[KwS]

i'd be happy with 150fwkw.

I intend to use a t3/t4 as the manifold i can get has that flange, and i can get hold of those turbos cheap.

I want to do this without spending too much over 2500 ideally. Needing to replace the ecu before i can do anyhting is rather limiting for me.

[Flannelman]

i would suggest if you are going to build a stunner turbo motor later, then start now. save up, build the motor you want as you go. trying to create a cheap bits'er is asking for trouble.

if it was cheap and easy to do, then everyone would have one

[KwS]

what i was planning on doing was building this up cheaply, as it is and when when the forged engine is built, transfer all the turbo stuff over to the new engine. So, i would still be using all the parts from now, but would make better use of them (higher boost).

Im going to put some more thought into it and get my maths on, and work out if its really that feasible for what is essentially a hyped up econobox... or just sell corolla and get something thats turbo to start with.