20V 4AGE Blacktop TURBO , Any advice Appreciated

[20v4AGTE_Shanon]

Hay I have owned my AE111 bzg 4age Blacktop for a year or so, had bought someones turbo project quite cheap.I have only recently been introduced to the forums. Until now have done alot of research without the help of the internet.

Basically this is the build at the moment

- LINK LEM V5e (computer) Dosn't do Map sensing, only airflow... So have a new Single throttle for new build.
- Blacktop Engine 20v
- Blacktop pistons, Silvertop conrods
- 3PUK clutch, LSD gearbox... Possibly (assuming)
- Custom Plenum, Not engineered..
- Un, branded BOV ,Seems to work good, Plumbed back into air filter side, quite silent.
- 2.5 inch steel intercooler piping from turbo, 3inch from intercooler to plenum ( i got ripped off and thats all i had)
- Simota Pod filter
- Quite a large Intercooler
- Standard radiator with 2 large 10 inch fans
- After market fuel pump.. Not sure how big, but Loud!
- 38mm Turbo smart wastegate
- Evo Turbo TD05
- Custom Turbo/ Wastegate manifold
- 2.5 inch straight through exaughst, Wastegate Plumbed back
- Full aftermarket suspention all around, inc swaybars. Handles like its on tracks. Not as much in the wet!
- 17 inch rims

Problems i am having, Needs map sensing for quad throttles, so is over fueling. An at the moment i am only running airflow sensor because thats all my Link supports. Old owner must of slapt the engine back together because it leaking oil badly. Because of the relativly bad tunning of the computer, and the blacktop pistons it is only boosting 7psi, Will get it dyno tunned after new build. It still hauls and have been to approx 230

So have decided to rebuild... and do things properly.

New Build

Will have everything as above, apart from

- Fully rebuilt all new seals, rings, bearings
- ARP flywheel, Head, and conrod bolts
- Metal head gasket? worth it?
- 4AGZE Pistons and Conrods
- I have a 4AGZE 7 ribbed block,sump and crank. Are all the 7 ribbed blocks the same? is ZE crank stronger...?
- Thinking of swapping Turbo for GARRET T28?
- Bigger injectors, Possibly 3SGTE injectors out of MR2?
- I have Evo1 or 2? Coil packs... with braket made up. Was going to instal, Worth it or use ZE coil packs? Is there any differance
- Possibly Changing Gbox to stronger E51 LSD gbox out of 4agze?.. involved? do i have to change flywheel,clutch etc ( have been told that blacktop cluth possibly fits)? worth it?
- Single 3inch throttle out of V8 LEXUS
- Possible bigger than standard alloy custom radiator.. worth it?
- oil cooler.. Worth it?

I want to get 20 pounds out of it , Im having no problems with heating at the moment at 7psi.. but 20??
I think that is all.. Im not a mechanic , just an apprentice electrician and dont really know a hell of alot about cars. I just try an do alot of research.
ANY advice would be much appreciated

CHEERS SHANON

[Dell'Orto]

I would just refresh that motor, and use GZE pistons to be on the cheap. The TD05 is a pretty good turbo, 20psi through that will be pretty good power. You'll probably want gen 3 MR2/Supra 540cc injectors to keep up with that sort of boost pressure.
C56 might handle the power, but not long term.
Odd that you say the Link doesnt support map sensing, what makes you think this?

[thegreatestben]

I am using a td05hr (evo 4 - 9)
Handles 20psi no problems, at it's limit efficiency wise though.

Really nice turbo's though.
Have a look at my thread and some of the other *agte builds on here for an idea of what you can do.

[20v4AGTE_Shanon]

Odd that you say the Link doesnt support map sensing, what makes you think this?

Its a very Early model of the LINK , Have taken car to speedtech in seaview/welly and they told me it wont support a MAP sensor, And if i wont to run the Quad throttles properly i would have to upgrade the Link to at least a Gen 3. Or i Can just Remove the Quads and Change to a single throttle... The far cheaper option, so thought i would do this...
Thats great news about the turbo!
These injectors you talk about will they plug straight in? and are they side feed?

[Dell'Orto]

Odd, it cant be a V5. I had a V5 LinkPlus in my old SW20, and that got rid of the AFM. Also my Trueno had a V2 Link, and that ran a MAP sensor. Maybe they think you're asking for an external MAP sensor? Or perhaps trying to profiteer from someone who doesnt know much about cars
A G3/G4 Link will definately be a better option, but if you've got a V5 Link in there now then that will run it just fine.
Yeah pretty sure the 540's are sidefeed.

[DexGT]

V5 links have a Map sensor built in (like all links as far as I know) , to run quads you need to run it in the mode that uses TPS off boost and MAP on boost. I don't doubt that a later model link will be better but I'm sure you can run quads with a V5.

[20v4AGTE_Shanon]

Ive just had a quick run through the manual, And Yes says it does MAP , Great. Will show speedtech the mannual and see what they have to say to that.

[d1 mule]

yea man, iv got a G1 V5 and inbuilt MAP, have a look where the loom plugs in there shoud be a small hole with a black fitting for a Vacuum/boost line to go to. will put a pic up if you want

def think someone is spinning yarns, unless you have one of the old school hand controller tuning only G1s

[20v4AGTE_Shanon]

Yeah mate its def got that boost line, Anyone worth dealing with instead of speed tech, In wellington?

[matt dunn]

Lem V5 will run it as that is what I used to have to run mine.

They are definatly not the best there is and a little harder to tune,
but it will work.

It wont be that it doesn't work, it will be they think it is too hard work,
and easier to just make you pay for a new ECU to make their job easier.

[20v4AGTE_Shanon]

Well not having to change it to single throttle, means a whole lot of welding i dnt have to get done. Time for the rebuild

[Dell'Orto]

I guess the other glaringly obvious thing - blacktops are MAP sensored from factory, they dont run an AFM...unless someone has bodgied one up? Got pics of your engine bay?

[20v4AGTE_Shanon]

No not at the mo, will put some pics up this weekend, when i work out how haha. All the existing electrics have been left in the engine bay, whether there being used or not - confusing the Fk out of me.

[XSVWGN]

Yeah mate its def got that boost line, Anyone worth dealing with instead of speed tech, In wellington?

Hey shannon, Matt here. You bought the block etc off me. I would go to speedtech as my 4agte setup is 265kw on 20psi at the moment and i have a matewith a 300kw 16v 4agte ae86 that speedtech have done.They know their shit mate

Im running sard 800cc injectors so dependant on the amount of power you want to run you would probably want at least gen3 mr2 540cc


Matt


021 297 1754

[Lith]

^ yeah agreed, sounds like something must be missing from that conversation as they've done more quad throttle/4AGTE setups than you can shake a stick at - even running the same ECU you have.

[20v4AGTE_Shanon]

Yeah ok ill go see them an see what they were talking about...

[TRD_ZERO]

Just a quick thought, i know that that ecu can run a map sensor but if it didnt y did no one think of using the silvertop setup as it is afm. Not that its needed now as you can run map.