CLyons0203

Has anybody developed an adapter plate that will bolt on the 2009 maxima throttle body to older 3.5 liter engines found in 02-08 maximas? The adapter plate should also work on G35s and 350Z.

Stephen Max

iTrader: (59)

I could probably come up with something for you. PM me.

95naSTA

iTrader: (10)

I'm going to drill one out to make it work. There's enough material there.



The TB neck needs to be bored out a couple millimeters.

t6378tp

iTrader: (69)

Stephenmax would you be able to taper the flange from the 09tb to 3.5 neck, if not I can just bore it out

CLyons0203

I would rather just bore out the manifold neck

Cant_Get_Ryte

iTrader: (52)

did mine by welding a 1 inch block then honing it out.

Cant_Get_Ryte

iTrader: (52)

CLyons0203

dont think that would work on a G35/350z. I would need an adapter flange

aackshun

iTrader: (3)

Subscribed....

I wonder which would be easier... I have a RWD manifold getting modded for FWD use & A FWD 3.5 manifold @ home so I could go either way

CLyons0203

http://www.hitachi-automotive-la.us/...et_Catalog.pdf

95naSTA

iTrader: (10)

So, I finally got the 2k9 TB on my 3.5 hybrid.

I redrilled the bolt pattern to match my '03 UIM inlet then opened up the inlet with a 3" 40 grit flapper wheel. The two bolts that go into the blind holes needed to be shortened since the TB isn't as thick in the bolt mounting area. And I had to re-do all the convert to cable b.s. since the electric motor side is different.

I'll get some more pic tomorrow when I've got some light.

Here's a couple pic of the bore matched:

95naSTA

iTrader: (10)

aackshun

iTrader: (3)

My name is Aaron.

And I approve of this.

grey99max

iTrader: (12)

That TB would be more useful if the OP removed the throttle blade, cut off the upper (unthreaded) half of the shaft, countersunk the blade and screwed some shorter flathead screws into the lower part of the shaft, and pick up about 10% more cross-section area in the bore. IMHO....

95naSTA

iTrader: (10)

I did that to my other car. I'll probably do it to this one but you gotta remember cross section isn't everything.. that plate makes a pretty large boundary layer when fully open and half shafting won't do a whole lot.

grey99max

iTrader: (12)

True - but it's not laminar flow around the shaft itself - I suspect the blade helps divert the flow, but less cross sectional area in the TB means less flow restriction. Of course the same could be said of most MAFs.... and I always wondered about a wideband sensor sitting in the middle of an exhaust pipe.

It would be nice to have a way to flowbench an entire intake manifold/TB/MAF assembly. Anyway, narrowing a TB shaft is a "can't hurt - might help" mod for anything less than "all the airflow you can get".

5er

So did the adapter plate idea die with this drilling method?

t6378tp

iTrader: (69)

nope hit up stephenmax

5er

Cool thx!

Unklejoe

iTrader: (6)

stupid question but what size silicone couplers are you guys using for these 09 tb's?

no way in hell my 3" coupler is gonna fit on there. im about to just use the 4" one and lay a couple rounds of electrical tape around the TB

95naSTA

iTrader: (10)

I'm using a 3.5" coupler.