q45 coupler size...

alloyguitar

it's legal, i swear...
Mar 30, 2005
570
0
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36
knoxville, tennessee
Can anybody tell me the size of silicone coupler they used for a q45 tb? My motor tech measured roughly 3 3/8" ID, so I'm assuming 3.5," but wanted to clarify before ordering.

Any help would be greatly appreciated!
 

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
I used a 3.25 from siliconeintakes.com...it was a tight fit, but I got it on there. as with anything tight, lube helps ;)
 

92nsx

Supramania Contributor
Sep 30, 2005
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Clearwater, MN
adampecush;1298232 said:
I used a 3.25 from siliconeintakes.com...it was a tight fit, but I got it on there. as with anything tight, lube helps ;)


I used a 3.5" coupler from those guys and if fit perfect. You must have really stretched the 3.25 to make it fit.
 

charman02

Cruiser
Oct 14, 2008
121
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0
Fresno
Now is this q45 tb, i'm assuming infiniti right? What year q45? And what other mods do you have to do to fit that tb on the mk3?
 

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
92nsx;1298258 said:
I used a 3.5" coupler from those guys and if fit perfect. You must have really stretched the 3.25 to make it fit.

Well put it this way, it probably doesn't need to be clamped.
 

alloyguitar

it's legal, i swear...
Mar 30, 2005
570
0
0
36
knoxville, tennessee
charman02;1298273 said:
Now is this q45 tb, i'm assuming infiniti right? What year q45? And what other mods do you have to do to fit that tb on the mk3?
We built a custom intake manifold for it, as well as got a TPS adapter from beechperformance.com (or, I haven't ordered it yet, but you get the idea).

It's not exactly a bolt-on affair, however the q45 tps can be wired into the stock electronics without too much of a headache. I, personally, would rather just put the part and not mess with it. Also, there are two different sizes depending on year, so you may want to watch out for that. Pull-a-part is a good place to find them. All three of mine cost me something like 20-25 bucks a piece.

ANNNNNNND It looks like I'll be going 3.5. Thanks for your input, guys!
 

92nsx

Supramania Contributor
Sep 30, 2005
2,957
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Clearwater, MN
adampecush;1298285 said:
Well put it this way, it probably doesn't need to be clamped.

:rofl::rofl::rofl::rofl:

charman02;1298273 said:
Now is this q45 tb, i'm assuming infiniti right? What year q45? And what other mods do you have to do to fit that tb on the mk3?


If you have to ask this question you do not need it and dont waste our time untill you have done more research on the subject.