N/T throtle body a good turbo one

[cruisintalonawd]

Whats better the 1g turbo one or the n/t one. would it be considered as "upgrade"

 

[97gstjosh]

Ok the 1g turbo TB is 60mm
The 1g N/T TB is 64mm

With the N/T throttle body you will have to Machine Shaft Seal Recesses to accept
Turbo TB Shaft Seals. You can read about it here: DSM THrottle Bodys
You also wont have to use the 1g or 2g TB elbow. you can use a silicone couplerto connect
your UICP to your TB some ppl dont like this though because they are worried
about boost blowing the coupler off. I personally havent had any problems with this whatsoever.
All the sensor are interchangeable so thats a plus too.
So if you dont mind doing the extra work or just send the TB to Steve at Professional throttle body machining service for the following make
and he can take care of it all.

Its just easier bolting up the 1g turbo TB thats why alot of ppl prob. use it.
I would consider it an upgrade in some ways. Hope this helps you out some

 

[cruisintalonawd]

ok you kinda confused me with the shaft deal....I cant just slap the N/T one on??????

 

[90laserRSfwd]

Yes you can just bolt the non turbo t/b onto your intake manifold. With the non turbo t/b, you have to make some changes to your UICP, for it to connect to the non turbo t/b like mentioned above. Also the vacuum lines are not the same. Turbo has 4 non turbo has 3 (91 to 94 style).

 

[cruisintalonawd]

well thats just one less ill have to block off and I don't really like the hole t/b elbo idea

 

[9 T GSX]

Yes,the N/T will bolt right up no problem as mentioned,just need a coupler to attach from the N/T to the I/C pipe not a big deal. I dont agree with the machining part of it for the shaft seals though.I put my turbo seals in my N/T T/B and they went right in no pinching etc.

 

[dsm-onster]

The n/t throttlebody necks down to 60mm at the butterfly and after. That is why we do not port match our 1g intake manifolds to match after swapping to a n/t TB. N/t 1g intake manifolds are identical down to the TB bore. So it is wrong to say that the n/t TB is bigger than a turbo TB.

It does do something excellent. It makes an easier way to do away with the 1g tb elbow. A restriction smaller than even a 2g throttlebody. It has a 2.5" inlet and bead for a coupler.

Flow best to worst:
1g n/t tb with custom piping > 2g tb & elbow> 1g tb & elbow

A 2g elbow port matched to a 1g throttlebody yields pretty much the same results. But seams to cost more than swapping to an n/t tb, in my experience. The n/t tb accepts 2.5" intercooler piping without a reducer, too!!! Reducers are expensive.

You will need at least to flip over the n/t butterfly shaft seals and add turbo o-rings with silicone or lithium grease to assist in sealing for boost. I have had great results doing this with my n/t TB. Always passes a boostleak test to 30 psi and didn't alter my fuel trims.

Replacement o-rings from Sears, Home Depot, etc. :

1/2 X 3/8 X 1/16, #7 O-RING, STK NO 35724B, DANCO COMPANY

 

[this_tsi_8urV8]

The outter lip/rim of the NT throttle body is 2.8". Can you explain how a 2.5" coupler will fit? You will need a reducer if you have 2.5" intercooler piping. Because thats what I will be needing to make mine work.

 

[absolute_DSM]

The outter lip/rim of the NT throttle body is 2.8". Can you explain how a 2.5" coupler will fit? You will need a reducer if you have 2.5" intercooler piping. Because thats what I will be needing to make mine work.

A 2.5" will fit. Just because you used a reducer doesnt mean it wont fit.

 

[this_tsi_8urV8]

So a 2.5" coupler will fit on top of something that measures 2.8"?
I guess thats good to know. Might have something at home that will work then. Now the search begins.

 

[dsm-onster]

Silicone stretches!!!!! My 2.5" reducer fit nice and snug. . . It doesn't blow off and it wasn't damaged installing it to the inlet.

 

[mavisky]

I also now use NAPA brand 2.5" heavy duty hose for semi tractor radiators as my ic couplers. Takes alot of stretching to get over the nt throttle body but it seals great and is tough as hell.

 

[this_tsi_8urV8]

Ok, thanks I will take that into consideration.