Largest throttle body when keeping 4AGZE OEM inlet manifold

[Valkyrie]

Hi All,
What is the largest throttle body anyone has been able to fit to their 4AGZE while keeping the factory inlet manifold and "j pipe"? I will be boring the "j pipe" accordingly.

I am looking at a 60mm 7MGE throttle body and am unsure as to whether it will fit as a replacement or bore the factory setup out and use the 60mm blade.

I do not have the 7MGE throttle body at hand, hence asking...

Cheers

[bermy]

4 x 39.7mm... I think I win



Althought the stock J pipe doesn't fit anymore...

[xero]

im not an expert, but i thought the N/A 4age throttle body was the go to upgrade for a GZE?

[maj]

I head 3S TB's are good too (off an SW20 I believe). You could keep the J pipe but you'll need an adapter piece to hook up to it.

[nick.parker]

Yeah, the 4age throttle blade diameter is something like 5mm bigger than the SC throttle blade. I have a 60mm Holden throttle on my GZE, with large custom pipework, SC14 @ 17psi and (bigger inlet camshaft) and while its perfectly fine (I'm 'used to it') I'd say to be perfectly honest its too big - symptom is its really a bit too sensitive at small openings.
Nick.

[.T.]

gen2 3sgte t/b is the one to go to - fits with the least mods. ideally the sw20 mr2 one - celica one is different but can be made to work

[Duk]

You can bore the standard GZE TB out to 55mm. Obviously you will need a 55mm butterfly valve to go in there.

[Valkyrie]

Cheers gents, a 4AGE throttle butterfly is being fitted to a 4AGZE j-pipe.

[old_mr2]

Heres some pics from my old GZE (aw11). Its a GE TB onto a GZE Jpipe (bored out)

Before:


J-Pipe bored out to suit (not in situ)


Almost there:


After: