Throttle Body Mod

[Eagle85C4]

Somewhere in here I found an article about boring out the throttle body to 52mm then making new plates. But I cannot seem to find it. I thought I saved the location....anybody remember where it was?

 

[Ken]

I don't remember it Ray, but do you really want this in the tech forum rather than the mods forum?

_ken

 

[Eagle85C4]

Found it again by searching google for "52mm throttle body"
amazing what info you can get by a simple search and a bit of time.

http://www.faribault.k12.mn.us/brian/camaro/52mm/

This link is about how to change a 48mm stock t/b to a 52mm. It has all the tools needed to do the job as well as a decent explaination for all of us DIY's.

 

[SPANISHVETTS]

Hi Ray,

Thanks for the link or, ¨never thought of doing it that way¨.

I would never in a thousand years have the patience to grind out 2mm of metal with a hone. Boring one of the barrels only takes about 15 min. on a lathe, if I wanted the TB as an operational item the entire job plus sealed needle bearings for the butterfly shaft could be completed in less than 1 ½ hrs.

About ½ of this work is finished on my old 48mm TB. We are using this as a training/learning project. The kids have to make all of the tools required. I took both chucks out of the lathe cabinet and hung a ¨out of order¨ sign on the mill. They had to make dogs to clamp the TB to a faceplate, fabricate boring bars, etc., etc.

Racing always takes precedence so we only get to work on the project an hour or 2 per week plus all of Euro-land, including the Racing Team, excluding me, is on Vacation for the month of August. From July to September I work my butt off while my friends play, but then everything has its price. With any luck we will get back to work sometime in October.

Somewhere around this sight I posted some pictures of the needle bearing modification to an F-body TB. The kids did this work on a mill with minimal supervision. Considering that they have NO formal machine shop training and that I am a self-taught hack who uses the ¨horse shoe, napalm, thermo-nuclear warfare measurement system¨ better known as CLOSE COUNTS, anyone with access to a lathe or mill could knock the job out in a few hours.

There are always Tb´s on e-Bay for not much money. It might be worth your while to pickup a cheep TB to play with. I saw 2 sell for less than $25 for the pair.

Sorry to rant on, but these are the things that I love to do. The day that there are no kids with a spark in their eye and fingers itching to touch a new piece of machinery is the day that I check out.