: Bored TB's revisited



darien99
02-20-07, 10:31 PM
We'll I'm mad I missed the big 80mm tb offer a couple years back on here, but I didn't own a cadillac then. Is there any other places that offer the '95's a 80mm tb? Is RSM still around? I guess I could have my fabricator start machining a few out also if there's interest...:stirpot:

ELDOminator
02-20-07, 11:24 PM
I am still interested. I'll be going into the Air Force and won't be driving my car for a few months. So sending my TB out for a core won't be a problem! As long as the price is right, hell yeah I'm interested!

Raze
02-21-07, 07:40 AM
eldorado1 used to make them but no longer, RSM is defunct so that leaves you with getting a local machine shop to do it for you with their lathe.

Just make sure you have the rear piece closer to the intake cut at the right angle, it's not a straight pass through. Further, take a dremel and clean up the intersection of the two halves to keep the air as clean as possible and to make sure the gasket is properly sized. Depending on the port you may or may not be able to reuse the valve plate, just have another one cut from some sheet aluminum, or stainless and don't worry about adding hash grooves on the plate, they have a minimal aerodynamic affect. If I remember correctly an 80mm port gives you over 10% increase in intake area which is not trivial.

Another mod to add to help take advantage of the larger throttle body is the airbox mod like that done on caddyinfo.com. Basically cut out the bottom of the airbox, and adapt a flat K&N filter to fit the airbox. The combination is about as good an intake as you'll get.

CadillacSTS42005
02-21-07, 11:25 AM
if eldo got enough deposts i dont see why he wouldnt produce them again
he stopped due to the lack of interest
maybe pm him?

99Classillac
02-21-07, 03:48 PM
I want one too. I already asked. He don't make them no more

AlBundy
02-21-07, 03:54 PM
Well alot of people said they were interested but when the time came to dish out the cash only a few did. Hell I only know of two people, me and ETC1997.

stbtt
02-21-07, 05:41 PM
i talked to these people a while back and they will do it if you send in your core or you can find one in junkyards for cheap i found a few for $50 and send them that one no down time they said it would be around $217 + $8.95 handling and they will bore your throttle body as large as the material thickness allows

http://www.rvmorsemachine.com/

Raze
02-21-07, 05:53 PM
I actually got mine from eldorado1 as well...

weister42
02-21-07, 05:54 PM
I have a 98 Deville and I like to have a 80mm TB, powerfiero were selling them on eBay but that was a year and some months ago. I can pay with Paypal or credit card :bouncy: I have a spare 75mm TB from a 98 Seville too.

ELDOminator
02-21-07, 06:53 PM
i talked to these people a while back and they will do it if you send in your core or you can find one in junkyards for cheap i found a few for $50 and send them that one no down time they said it would be around $217 + $8.95 handling and they will bore your throttle body as large as the material thickness allows

http://www.rvmorsemachine.com/
Thanks for the link! I think I'll contact them some time soon.

darien99
02-21-07, 10:03 PM
Can someone make a list of alike Throttle bodies according to years?

I have a '95 myself, but I only have access to a '93 TB for a core, are they the same? What other years are the same?

If I decide to have my fabricator make them, I'll have him do these up before our headers, since these will take much less time. Does anyone know why 80 was chosen as the magic number? Anyone ever try larger like 82 or so?

Not that I think 80 is small, I'm putting a 68.5mm tb on my 4.7L truck tomorrow...:)

CadillacSTS42005
02-21-07, 10:24 PM
bored tb will do nothing without the plate bored too... and it needs to be tapered in not just bored...

AlBundy
02-21-07, 10:31 PM
I believe it was bored to 80mm because that is as large as you can go without throwing codes or something like that.

CadillacSTS42005
02-21-07, 10:35 PM
80mm is as big as you can go due to the intake, its 80 mms

eldorado1
02-21-07, 11:06 PM
79.5mm is as big as you can go without the throttle body falling apart

CadillacSTS42005
02-22-07, 09:14 AM
that explains that!

darien99
02-26-07, 08:59 PM
...so does anyone know the year differences?