i would think you would want to run a MAP sensor. otherwise how is the ECU to know what sort of load the engine is running at?

 

To tell you the truth Doug, I have no idea :thumbsup: I'm just going by what I've read on other forums (so it must be true, hahahahaha...), and by talking to my fabricator... I don't really know how the ECU's work, or what inputs they usually need.

TRD_KE70: Did you mean this?

na, i meant this

Oh that... Hmm, maybe a little more than I was hoping to spend (considering 20v quads go for usually between $150-$300)... But sounds interesting! What are they off?

Edited July 1, 200521 yr by demuire

aftermarket TGM Throttle bodies, with fuel rail, surge tank and some aeroquip fittings,TPS switch,Injectors,etc. they'll bolt straight on to side draught manifold.

Cool, that sounds rather spiffy :P I would assume they would go on a K engine too, be good for converting a carby engine to EFI or something... 4AGE's have the fuel rail and injectors and all that on the head itself, so the only thing that's on the manifold is the throttle bodies and TPS.

so easy to change over then

do it :P

My financial planner says no :P Spoil sport...

:P financial planner :D

The 2nd gen SVT ones are pretty good too. AFAIK, exactly the same as blacktop ones, except slightly smaller throats. Does anyone know what the actual sizes of the throats are (for both SVT and BKT)?

I'm sure I've read somewhere in the past that the 4A-GE 20v has 40mm throttle bodies. I'm pretty confident this is correct.

um no..... silvertop is 43mm and b/t 45mm

HOLY COW. What a difference in surface area of the throttle bodies.

 

16v - 1 x 60mm = 2827.8 mm2

SVT - 4 x 43mm = 5809.558 mm2

BKT - 4 x 45mm = 6362.55 mm2

 

No wonder the 20v's breathe so much better, they've got SO MUCH MORE throttle to breathe with! Even 2 x 16v throttle bodies won't match up to the SVT's...

Edited July 3, 200521 yr by demuire

Bugger me. Now I'm REALLY keen on the idea of a 20v head! Oh how I dream of blacktop...

Well that is of course the main reason I want one. The quad throttles are just a huge bonus. I'd just have to get a plenum chamber made up and I'd be set. Oh, only if I had the money. I start at Coles tomorrow, so maybe next year.

Yes, but they're small inlet valves :P Is it 3 inlet? Or 3 exhaust? i would have thought it would be 3 exhaust, 2 inlet.