3800 Custom 72.5 mm TB FS

[imported_Ron Vogel]

Have a '99+ style TB, bored out to 72.5mm. The front end has been ported and polished to a mirror finish, and formed to a "velocity stack" with the hump removed and smoothed to remove the screen lip.

A new brass plate installed, the shaft was half-shafted to allow 3mm more flow area. The extra boss was drilled out, and it threaded 1/8"npt. There is a brass plug in there now, but is ready to accept a NOS nossle, or alky.

This TB is intended to be used with an outboard MAF, such as the LQ4. The MAF hole is filled and smoothed. All epoxy work was done from the outside to secure it well. A aluminum metal epoxy normally used for industrial repairs is what's on there.

This things the real-deal. Just swap over a new outboard MAF and it's a bolt on.

I'm asking $225 OBO

Pics:

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[REDHOTT04GTP]

Originally posted by Ron Vogel@Feb 25 2006, 10:30 PM
Have a '99+ style TB, bored out to 72.5mm. The front end has been ported and polished to a mirror finish, and formed to a "velocity stack" with the hump removed and smoothed to remove the screen lip.

A new brass plate installed, the shaft was half-shafted to allow 3mm more flow area. The extra boss was drilled out, and it threaded 1/8"npt. There is a brass plug in there now, but is ready to accept a NOS nossle, or alky.

This TB is intended to be used with an outboard MAF, such as the LQ4. The MAF hole is filled and smoothed. All epoxy work was done from the outside to secure it well. A aluminum metal epoxy normally used for industrial repairs is what's on there.

This things the real-deal. Just swap over a new outboard MAF and it's a bolt on.

I'm asking $225 OBO

Pics:

[snapback]116215[/snapback]​

long shot in the dark......this wont fit my 04 gtp will it?

 

[imported_Ron Vogel]

Nope, IIRC you have drive by wire...it's totally different. The GEN V motors have 75mm TB's stock. If you want more flow out of it, you need to modify the TB shaft (which is huge). The L67 TB's can flow well if modified, but generally 72/73mm is as big as you can go into the bore without weakening it quite a bit.

 

[REDHOTT04GTP]

Originally posted by Ron Vogel@Feb 25 2006, 11:50 PM
Nope, IIRC you have drive by wire...it's totally different. The GEN V motors have 75mm TB's stock. If you want more flow out of it, you need to modify the TB shaft (which is huge). The L67 TB's can flow well if modified, but generally 72/73mm is as big as you can go into the bore without weakening it quite a bit.

[snapback]116227[/snapback]​

So what do i need to get to bore mine out????

 

[imported_Ron Vogel]

It's not something you'll need quite yet. You would be better served by a bigger MAF, and a FWI.

 

[REDHOTT04GTP]

Originally posted by Ron Vogel@Feb 26 2006, 12:11 AM
It's not something you'll need quite yet. You would be better served by a bigger MAF, and a FWI.

[snapback]116235[/snapback]​

What about with a turbo install with all the goodies :lolsign:

 

[Sinister Drag Designs]

well you will be changing to a 85mm maf for your ic kit. teh biggest restriction in the tb was the stock maf, dont worry about it yet, it wont be holding you back with the CT kit