I will soon bore out stock TB and IM. I think the maximum boring size-limit is 58mm. Anyway, I am not sure about this, but I believe that there is a plate inside throttle body (butterfly?). If I get my TB bored out, do I need to get new plate or is stock plate re-usable?

Thanks

 

New plate--if the TB is larger, the plate will be too small, right? wink

Any shop that does the boring should be capable of cutting a new one. It's not really hard (a circle with a couple holes), but some places will try to charge a lot for it, others will include it with the quote for boring.

The max bore for the stock TB is 58mm, the max bore on the IM is a lot larger than than you'll have to worry about. smile.gif

[ April 25, 2002, 12:24 PM: Message edited by: Veniston ]

 

Thanks Veninston. 5 Stars

 

The stock TB can only be bored out to 58mm. When this is done, the TB walls are only 1mm thick. If they do not bore 100% centered, you will have a nice paperweight.

The TB has a butterfly disc inside of it. it is not a round disc, and mounts to the TB shaft in a rather excentric way, it is not as easy as cutting a 58mm disc and slapping it in there.

Make DAMN SURE the shop doing this work for you knows what they are doing.