E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 12-12-2012, 08:12 AM   #1
Larry D
Registered User
 
Join Date: Mar 2012
Location: UK
Posts: 16
My Ride: 328 Ci
Throttle body adapter plate for 330 intake manifold

Hello guys

So the time has come, I have the manifold, injectors, disa, and loom that I got in one buy for a very nice price, now I have a question about the adapter plate.

From reading threads on here, the turners plate is for e36 and if you adapt it, it holds with 2 bolts, some guys have made their own but have had to grind some of the throttle body down, and some say they have made their own and no grinding was needed.

The simple question is, because the plate is obviously flat, is thickness of it the only factor in if you need to grind the throttle body or not?
I dont want to grind if I dont want to, and I can make an adapter plate on the fly, but obviously I have to have the material ready to go when the manifold comes off.

Any info you guys could give me would be fantastic!
Seems like alot of you guys have done this mod, but over in the UK, noone seems to have done it!
Larry D is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 12-12-2012, 03:27 PM   #2
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,013
My Ride: '04 MB ZHP
I should be able to help you in a few weeks. I'm working on a 330 TB retrofit, so my current adapter plate will be out for measurement.

Sent from my SCH-I535 using Bimmer App
__________________
Hornung418 is offline   Reply With Quote
Old 12-12-2012, 05:30 PM   #3
Larry D
Registered User
 
Join Date: Mar 2012
Location: UK
Posts: 16
My Ride: 328 Ci
Well I appreciate any help you can give me fella, I'm sure I can make a plate to fit between the two, but I'm wondering what determines whether the throttle body gets grinded or not.
Is it the thickness of the plate?
And how is the o ring fixed in position? Is there an indent for it in the bottom of the throttle body assembly?
Larry D is offline   Reply With Quote
Old 12-12-2012, 06:01 PM   #4
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,013
My Ride: '04 MB ZHP
It isn't the thickness but the orientation of the mounting point.

Sent from my SCH-I535 using Bimmer App
__________________
Hornung418 is offline   Reply With Quote
Old 12-12-2012, 06:24 PM   #5
Larry D
Registered User
 
Join Date: Mar 2012
Location: UK
Posts: 16
My Ride: 328 Ci
Hmmm, so the throttle body opening is not centred on the hole?
I'm getting it now, the 330 throttle intake hole is bigger in diameter, so you can move the throttle off centre but you still have the whole throttle body opening passing air into the hole correct?
Larry D is offline   Reply With Quote
Old 12-12-2012, 06:30 PM   #6
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 227
My Ride: 323Ci
I made one. I had to "tap" the throttle body with the sander. No grinding like some of these. It was very, very little sanding. Here's a pic of the adapter, very straight forward. Sorry about the RTV, but you can see the o-ring line that is made by the o-ring for the throttle body. It indicates that the o-ring clears all 4 bolts.

Because the adapter is only 1/8" thick, I had to grind depth off the bolts so that they didn't run into the intake manifold when fully tightened down.

This adapter was easy to make, just took some time on a drill press, a bandsaw, and using a carbide burr and sanding drum. It was important that I used the tap in the drill press (and hand tapped it, not power tapped it) so that the tapped holes were perpendicular to the surface of the plate; otherwise, you may have clearance issues because the bolts may go in at an angle and push the throttle body to one side.

I never had problems with the thickness. Since it is being sandwiched between 2 thick pieces, warpage wasn't an issue. Never had vacuum leaks either. The RTV was unneccesary but didn't hurt; its the same material the silicone o-ring was made out of anyway.

Attached Thumbnails
Click image for larger version

Name:	IMG_20121209_162347.jpg
Views:	228
Size:	105.9 KB
ID:	481866  
shm21284 is online now   Reply With Quote
Old 12-12-2012, 06:44 PM   #7
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,013
My Ride: '04 MB ZHP
Quote:
Originally Posted by Larry D View Post
Hmmm, so the throttle body opening is not centred on the hole?
I'm getting it now, the 330 throttle intake hole is bigger in diameter, so you can move the throttle off centre but you still have the whole throttle body opening passing air into the hole correct?
Yes this is due to the difference in diameter. Mine was moved down to the base of the inlet hole. Basically the two circles shared a common point at the bottom of the B30 inlet.

Just machine a shape to accept the ICV and give the mounting screws enough counter-sink to sit flush. I think my current set up required a little of the manifold to be ground away but not the TB; that was untouched.

Sent from my SCH-I535 using Bimmer App
__________________
Hornung418 is offline   Reply With Quote
Old 12-12-2012, 08:11 PM   #8
Larry D
Registered User
 
Join Date: Mar 2012
Location: UK
Posts: 16
My Ride: 328 Ci
That picture explains alot shm thank you for that, clear to see the o ring sunk in off centre.
Ive seen another one someone made up and they didn't have a recess for the o ring, how necessary is that? Is there a recess in the bottom of the throttle body for it?

I have two more questions then it's to bed!

What is the item that fouls the throttle body that requires the need to get the grinder or sander out?

And now you've done it, do you think it's possible to position the throttle body better to save getting the grinder out or is that a necessity for this mod?
I appreciate the help guys, a true community.
Larry D is offline   Reply With Quote
Old 12-12-2012, 09:45 PM   #9
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,013
My Ride: '04 MB ZHP
That would be the ICV which mounts above the throttle body. It hits the top corner if you were to use the Turner retrofit bracket. With the custom one, just move it south and it will clear.
__________________
Hornung418 is offline   Reply With Quote
Old 12-18-2012, 09:50 AM   #10
Larry D
Registered User
 
Join Date: Mar 2012
Location: UK
Posts: 16
My Ride: 328 Ci
I appreciate the info guys thank you for that
Larry D is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Censor is OFF





All times are GMT -5. The time now is 01:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use