q45 throttle body on rb25det??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Popscribble · 02-18-2009, 01:07 AM

I have a series 1 rb25det in my s13 and i dont know how to install the q45 (90mm) throttle body. I know it fits directly but i would like some reassurance, any pics or advice would be great, btw its stock cept for 3" tbe runs like a dream

eh? · 02-18-2009, 07:08 AM

You're using the greddy intake right? It's just a straight foward r/r.

ANVIL · 02-18-2009, 09:18 AM

fits directly only if you are using a greddy (style) intake manifold. also the tps is the same so u can use either q45 or rb25 with your S1 incase it didnt come with one

Popscribble · 02-18-2009, 12:01 PM

no its the stock over the top manifold, will the throttle cable from the rb fit the q45 or do i need to swap it out?

eh? · 02-18-2009, 12:41 PM

The Q45TB is not bolt on, what are you doing? It's probably too big to fit in the stock location.

timlush · 02-18-2009, 12:49 PM

It does not bolt on to the stock manifold. It's only a direct bolt on to the Greddy (style) manifold

Popscribble · 02-18-2009, 03:49 PM

oh my bad from what ive heard its a direct bolt on to the stock mani i guess that idea is a fail thanks anyways guys

beats13bob · 09-30-2009, 03:22 PM

they make an adapter

eh? · 10-01-2009, 05:42 AM

Quote:

Originally Posted by beats13bob

they make an adapter

Doesn't matter it's too big to fit the stock location.

shogun! · 10-01-2009, 08:31 AM

Of topic since it is on a ca18det but may give you an idea.

Kinugawa turbo · 10-03-2010, 01:46 AM

Quote:

Originally Posted by Popscribble

I have a series 1 rb25det in my s13 and i dont know how to install the q45 (90mm) throttle body. I know it fits directly but i would like some reassurance, any pics or advice would be great, btw its stock cept for 3" tbe runs like a dream

Does the Q45 throttle body TPS fit a series 2 RB25det?

Sileighty_85 · 10-03-2010, 04:52 AM

Quote:

Originally Posted by Kinugawa turbo

Does the Q45 throttle body TPS fit a series 2 RB25det?

From what ive heard no it wont, it uses a differnet voltage signal

lazyeyes13 · 02-26-2014, 06:43 AM

Bringing up an old topic here! I have a s1 rb25 with a greddy intake and a q45 tb and I guess im missing the idle air control valve?

Im not sure where it even goes...

Anyone know what year q45 throttle bodies are used with rb25 so I could get one??

lazyeyes13 · 02-26-2014, 07:08 AM

Also could anyone provide a pic showing where the iacv goes on the q45 tb??

ultimateirving · 02-26-2014, 07:12 AM

Quote:

Originally Posted by lazyeyes13

Also could anyone provide a pic showing where the iacv goes on the q45 tb??

iacv goes on the intake if im not mistaken

lazyeyes13 · 02-26-2014, 07:25 AM

well the guy that had it before me has some lines on the throttle body plugged up so maybe that's got something to do with it...

I just don't see anywhere that it could go... Ill post a pic of the plugged up lines later

Darius · 03-04-2014, 02:42 PM

The RB25 IACV is normally located underneath the Greddy manifold with the adjustment screw facing the passenger side strut tower. It should be turned all the way clockwise and then backed out 1/4 to 1/2 turn.

As far as the Q45 TB goes, it has a secondary spring assembly on the throttle plate that needs to be removed in order for the engine to compensate correctly. Also, there are two vacuum lines that need to be capped on the TB so it doesn't bleed unmetered air into the system.

02-18-2009, 01:07 AM	#1
Popscribble Zilvia Addict Join Date: Feb 2009 Location: Palmdale Age: 34 Posts: 875 Trader Rating: (19) Feedback Score: 19 reviews	q45 throttle body on rb25det??? I have a series 1 rb25det in my s13 and i dont know how to install the q45 (90mm) throttle body. I know it fits directly but i would like some reassurance, any pics or advice would be great, btw its stock cept for 3" tbe runs like a dream

10-01-2009, 08:31 AM	#10
shogun! Zilvia Junkie Join Date: Mar 2005 Location: Sweden Posts: 367 Trader Rating: (0) Feedback Score: 0 reviews	Of topic since it is on a ca18det but may give you an idea. __________________ My +700hp RS13

02-26-2014, 06:43 AM	#13
lazyeyes13 Join Date: Jan 2014 Location: Southern Indiana Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Bringing up an old topic here! I have a s1 rb25 with a greddy intake and a q45 tb and I guess im missing the idle air control valve? Im not sure where it even goes... Anyone know what year q45 throttle bodies are used with rb25 so I could get one?? __________________ BECAUSE RACE CAR!!

02-26-2014, 07:08 AM	#14
lazyeyes13 Join Date: Jan 2014 Location: Southern Indiana Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Also could anyone provide a pic showing where the iacv goes on the q45 tb?? __________________ BECAUSE RACE CAR!!

02-26-2014, 07:25 AM	#16
lazyeyes13 Join Date: Jan 2014 Location: Southern Indiana Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	well the guy that had it before me has some lines on the throttle body plugged up so maybe that's got something to do with it... I just don't see anywhere that it could go... Ill post a pic of the plugged up lines later __________________ BECAUSE RACE CAR!!

02-18-2009, 07:08 AM	#2
eh? Zilvia Member Join Date: Apr 2005 Location: Orlando, FL Age: 43 Posts: 283 Trader Rating: (0) Feedback Score: 0 reviews	You're using the greddy intake right? It's just a straight foward r/r.

02-18-2009, 09:18 AM	#3
ANVIL Zilvia FREAK! Join Date: Apr 2005 Location: Anchorage, Alaska Posts: 1,174 Trader Rating: (8) Feedback Score: 8 reviews	fits directly only if you are using a greddy (style) intake manifold. also the tps is the same so u can use either q45 or rb25 with your S1 incase it didnt come with one

02-18-2009, 12:01 PM	#4
Popscribble Zilvia Addict Join Date: Feb 2009 Location: Palmdale Age: 34 Posts: 875 Trader Rating: (19) Feedback Score: 19 reviews	no its the stock over the top manifold, will the throttle cable from the rb fit the q45 or do i need to swap it out?

02-18-2009, 12:41 PM	#5
eh? Zilvia Member Join Date: Apr 2005 Location: Orlando, FL Age: 43 Posts: 283 Trader Rating: (0) Feedback Score: 0 reviews	The Q45TB is not bolt on, what are you doing? It's probably too big to fit in the stock location.

02-18-2009, 12:49 PM	#6
timlush Zilvia FREAK! Join Date: Aug 2005 Location: Louisville, KY Age: 39 Posts: 1,169 Trader Rating: (12) Feedback Score: 12 reviews	It does not bolt on to the stock manifold. It's only a direct bolt on to the Greddy (style) manifold

02-18-2009, 03:49 PM	#7
Popscribble Zilvia Addict Join Date: Feb 2009 Location: Palmdale Age: 34 Posts: 875 Trader Rating: (19) Feedback Score: 19 reviews	oh my bad from what ive heard its a direct bolt on to the stock mani i guess that idea is a fail thanks anyways guys

09-30-2009, 03:22 PM	#8
beats13bob Join Date: Sep 2009 Location: PA Age: 39 Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	they make an adapter

03-04-2014, 02:42 PM	#17
Darius Zilvia Junkie Join Date: Mar 2005 Location: Chicago Posts: 346 Trader Rating: (5) Feedback Score: 5 reviews	The RB25 IACV is normally located underneath the Greddy manifold with the adjustment screw facing the passenger side strut tower. It should be turned all the way clockwise and then backed out 1/4 to 1/2 turn. As far as the Q45 TB goes, it has a secondary spring assembly on the throttle plate that needs to be removed in order for the engine to compensate correctly. Also, there are two vacuum lines that need to be capped on the TB so it doesn't bleed unmetered air into the system.