EJ throttlebody fasteners , bolts or cap screws ?

discopotato03 · Post by **discopotato03** » Sat Nov 28, 2009 9:53 am

Hi all , I need to know if early (90's) era EJ20's and EJ22's bolt their throttlebodies up with bolts or allen head cap screws .

Also can anyone tell me which ones have the two wire rotary idle air control valve rather than a stepper motor .

Cheers Adrian .

Checkers · Post by **Checkers** » Sat Nov 28, 2009 9:56 am

EJ22's have bolts holding TB on, 8 x 1.25mm thread, 12mm head.

FROG · Post by **FROG** » Sat Nov 28, 2009 9:58 am

At work at the moment and they look to be flange bolts

discopotato03 · Post by **discopotato03** » Sat Nov 28, 2009 10:20 am

Good , as I hoped .

Now to the idle air control valve in the throttlebody .
I've been reading that in about 1999 the EJ went through control system changes and about this stage the IAC went from a rotary valve in the throttlebody to a bolt on housing with a stepper motor for idle air control .

I need to find the early type throttle body with the rotary idle air control valve and the gadget that moves it .
I'm going to drag an EA82 spider plenum to the wreckers to try to match up an EJ TB to it becayuse its the simplest most compact way to do idle air control .

Cheers A .

FROG · Post by **FROG** » Sat Nov 28, 2009 10:34 am

april 98 onwards i believe

discopotato03 · Post by **discopotato03** » Sat Nov 28, 2009 2:25 pm

Would anyone have any pics of the early throttlebody showing the early rotary type IAC valve ?
Can I assume that series 1 and 2 NA Libs have them .

Cheers Adrian .

Gannon · Post by **Gannon** » Sat Nov 28, 2009 3:31 pm

Google images is your friend

I think these are the two types you are referring to.

Integrated into the throttle body

Separate to the throttle body

The later turbo models ( i think)

discopotato03 · Post by **discopotato03** » Sat Nov 28, 2009 6:53 pm

I was actually looking at Google Images this morning but works computers filter out lots of interesting sites like NASIOC .

I couldn't get to the wreakers today , family stuff and too hot . Maybe tomorrow or Monday .

Cheers A .

discopotato03 · Post by **discopotato03** » Sat Nov 28, 2009 7:16 pm

Ahh , now they're cooking with the Gas .

http://forums.nasioc.com/forums/showthr ... light=iacv

These pics at Nasioc pretty much show me what these things are .
The only thing is I was asked to look for a two wire one .

Cheers A .