turbotommy

iTrader: (3)

wondering what throttle body to use on the 20b. the 20b tb or the fd tb. im using the stock 20b intake manifold so i dont know if the fd tb will match up. Any suggestions.??? thanks

GtoRx7

iTrader: (5)

They seemed to be the exxact same size if I remember correctly, but I'm sure Reted will let you know for sure.

power hungry

Im running a 90mm accufab.

mad20b

Im running a 100mm accufab.

I have also used a FD TB on a std 20b manifold, I just had to block off the bottom port in the manifold.

RX-Heven

iTrader: (1)

The fd and 20b tb's have the same bore size and bolt pattern.
The only real difference is that the 20b has the second set of secondary butterflies like a TII tb when the fd tb has only one set.
If you use the 20b tb, it is a good and simple upgrade to remove the second set.

onefastrx7turbo

iTrader: (5)

90MM infiniti Q45 TB...its massive.

neil

bladz311

iTrader: (1)

I'm using a single plate 90mm accufab

13btnos

iTrader: (1)

For the guys that use the Accufab throttle body's do you open up the plenum or leave it alone? Any pictures if possible?

mad20b

I have opened mine up.

sillbeer

Mine is completly gutted. All we have to do is have the bottom section of the plenum welded back on.


-Destin

mad20b

I cut mine thru the middle & welded on a square to round to suit the TB & the manifold. Will post pics when I remember!

bladz311

iTrader: (1)

Mine is all gutted out. I will see if I have any pics, if not, I will try to remember to take my digital cam to the shop.

20bfd3s

i am using holley 4" TB

13btnos

iTrader: (1)

BUMP! Anyone have pics of their plenums?

sillbeer

Here's a pic of one i've been working on. It needs to be smoothed up a little and the bottom half put back on. My roommate is going to use it now. I decided to ditch the q45 tb and modified plenum.

-Destin

onefastrx7turbo

iTrader: (5)

good girl!! That plenum still needs a bit of work to make it useable. Just gotta smooth the edges out and re weld and its good to go.


neil

2a+RoN

lookin good!

black93RX7

I know this is an old thread, but trying to decide what TB to go with.

Those running the Accufab 90mm TB, assuming its the Ford.

What part number are you using?

What modifications did you do to make it work?

Thanks for any help

rotary800

Its single valve 90mm infiniti Q45 TB can it work with to 20b intake manifold?

onefastrx7turbo

iTrader: (5)

It needs an adaptor in between the throttle body and manifold.

rarson

Is the 90mm Accufab actually 90mm at the plate? Because as far as I know, the Q45 is 90mm at the inlet only. Still not a bad choice in TB's though.