Red Top 4A-GE ITBs

[Shatonapples]

Does anyone know where I can get some ITBs for the red top? I know I have to buy an adapter plate and such, but does anyone know a good site that sells stuff like that? Or is that something you have to go to ebay for?

[EverAE]

you could either check ebay or jdm engine importers.

[Piloter]

The Ebay ITBs generally go for ~$400. The TTT adaptor plate is another $200 or so...plus you'd have to use either a standalone or the 20V ECU. There's a lot of people who have had great results with homemade ITBs from bikes...the Suzuki GSX-R 750 or Hayabusa is a popular choice.

[REN69]

Here's a blue top AE86 with black top ITB's, it belongs to one of the guys at dorikaze.com

http://www.youtube.com/watch?v=eS2VpBtMIjI

The setup.

- 16V bluetop engine (rebuilt, overbored, decked, stage 2 and 3 cams, TP Spirits header, Greddy exhaust)
- complete JDM Map conversion (harness, ECU, air temp sensor, MAP sensor, ignitor, distributor, etc..)
- AE101 silvertop throttles
- AE101 TPS sensor
- T3 manifold
- T3 velocity stacks
- Golden Eagle vacuum reservoir
- Greddy E-manage Ultimate piggyback
- AEM wideband

[Shatonapples]

That's pretty sick, yeah. I appreciate the help, I just wish I could find a site that just sold them, rather than trying to find them off eBay. I'm gonna keep looking. Thanks again.

[Flashmn]

Depends on what ITB's you want to have... you can use even ITB's from motorcycles.

[REN69]

A. Find someone parting out a blown 20V BT
B. buy ITB's from them
C. buy T3s ITB adaptor
D. modify to fit the red top
E. find aftermarket engine management
F. install on car and be happy.

[Flashmn]

if I was spending money on this kinda project, I think I'd pick something else. the 20V ITBs work just fine. But theres so many other options available that I'd take a look at them first.

[EverAE]

wouldnt be a bad idea to check out other options. but i agree with ren, if you wait around a little you can probably find some 20V ones for a pretty good price. i dont know if anybody's seen this but ill post it up anyway:

http://www.twincam.info/index.php?showtopic=26291

[Shatonapples]

What other options are you referring to? I've heard a few people talking about motorcyle throttle bodies (At least, that's what I understood). This is a huge learning experience for me, the only reason I'm pursuing this project is because I have a few friends who know most of what we need to know to do this. I've got a lot to learn though, that's for sure.

I'd definitely be willing to take some input/advice.

Here's what I have so far:
- 1987 MR-2 w/ stock wiring harness (ECU is probably still there, but I don't plan on using it.)
- Blown stock 4A-GE Big port that came with the car.
- All the engine components for a big port, intake, exhaust, etc.
- Stock 4A-GE Small port (10.3 compression.)


Current Plans (subject and open to change):
- Either figure out some ITBs or buy the small port intake manifold, found one for about $90.
- Run megasquirt.
- Eventually, after I get the motor running kindly, replace cams, and get ITBs if I haven't already.

Any advice or assistance would be great, and just a heads up, I live just south of Austin, TX.

Just to make 100% sure, I'd like to verify for sure that I have a red-top 4A-GE. The Black top and Silver top have black valve covers; however, the only reason I think I have a red top is because I have the small port heads and the wording on "16 valve" is red on silver. I'll try to get some pictures up soon and try to get several angles of the engine, hopefully we can figure out then.

Thanks guys,

Hank

[Shatonapples]

These pictures came out terribly, but oh well. Hopefully this is enough to identify the engine:

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[toyotaspeed90]

photos... it's a smallport


the T3 adapter doesn't fit a FWD car w/o modifications.... but t3 won't tell you that

[micro214_kp61]

for $400 for the ITBs.. why not just buy a 20V ST engine?

[Shatonapples]

I'm fitting it on my MR-2 (Mid engine, RWD layout). I plan to do modifications to the engine, and from what I've been reading, you're better off with a 16v than a 20v when you're planning to modify.

Still thinking I'd rather try the motorcycle ITB idea, I need a little more info and some advice for that though.

Thanks again for the help guys.

[EverAE]

i'm gonna agree with micro, it seems alot easier, i picked up my s/t for like 700$, wasn't there a couple b/t's for sale in the f/s section for pretty cheap? on another note i think we need to compare a relatively built 16V to a 20V with the same-ish mods to see why everybody downgrades them.