1G Throttle body on 2g!!???

[talonkid]

i have heard of people swapping the 1g throttle body for the stock 2g one because its bigger....now im wondering what do i need to do that? like just the throttle body or is there any sensors or anything i might need...and is it plug and play or any modifications needed??? please help me out thanks

 

[GSX93DSM]

From what I have heard it is bigger. Everything should plug right up and make sure you use the 2g elbow along with it.

 

[LRS95TSI]

search a little before you ask about something that has been discussed a million times.

http://www.dsmtuners.com/forums/showthread.php?t=69924

http://www.roadraceengineering.com/2gtbswap.htm

everything you possibly need to know! def a worthwhile swap.

 

[v2ner]

The important part is to search before you ask. Anywaz, what matters most is the IAC on the TB. Certain ones can't be used. Besides that, gasket.

 

[Auto RS T]

It would be a good idea to replace the shaft seals and the BISS screw o-ring before the install. They are most likely old and worn out and will leak under boost.

There is a tech article on the seal install, it shows how to replace the seals on a 90 Throttle body, but the 91-94 install is basically the same.

 

[Skunked tsi]

http://www.roadraceengineering.com/2gtbswap.htm

Thread/
Tyler

 

[Turbo Juice]

The important part is to search before you ask. Anywaz, what matters most is the IAC on the TB. Certain ones can't be used. Besides that, gasket.

all dsm iacs are the same.

when doing a swap to a 2g you must retain your 2g tps. when swapping it over you must set it properly so you get the right idle. this can sometimes be tricky but rre has a good write up.

you will also want to gasket match the intake manifold. just swapping the tb alone wont net you much of a difference unless the intake mani is opened up also.

 

[v2ner]

all dsm iacs are the same.

Yea, you're right. All the US ones are the same.

 

[talonTSIDriver]

you will also want to gasket match the intake manifold. just swapping the tb alone wont net you much of a difference unless the intake mani is opened up also.

Yes, the 2g intake manifold inlet needs to be ported to match that of a 1g TB. And the TPS needs to be moved from your 2g TB to the 1g.

 

[Hal]

Yea, you're right. All the US ones are the same.

Uh... not he's not right, and no they are not all the same.

90 is different than 91/99

 

[eclipsh]

On a related note, can a 90 use a 91+TB? My 90 has dead sensors and I have access to a 92-TB and the wires to hook it into my 90 harness.

Tried a search, got zip.

 

[Hal]

Yes, TPS uses the same color codes so you can splice in the 91/94 TPS harness.

ISC requires swapping two wires in the harness but is otherwise bolt on compatible.

 

[nightspeed87]

what kinda gains can be found from 1g tb on 2g; more top end possibly? ( asking because my friend has a pretty much stock 2g. )

 

[veloz]

More top end, quicker throttle controls

 

[daren_p]

Or an even easier route would be to send your 2g TB to www.throttlebodys.com and have it bored out, this way it will be a direct bolt on whith no changing of vacuum lines.

 

[nightspeed87]

what about a bored out 1g tb?