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2002SportEvo View Drop Down
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Points: 247 		Direct Link To This Post Topic: TB Synchronising
    Posted: 21-January-2005 at 08:19

Has anyone tried the Morgan Carbtune synchroniser on the E30 M3 throttle bodies ?  Was thinking about buying ?

http://www.carbtune.com/index.html
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215DMX View Drop Down
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Points: 1780 		Direct Link To This Post Posted: 21-January-2005 at 10:22
I've got one - they are v.good and quite stable too.

They come up on ebay quite often - I got mine for £25
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Adrian H View Drop Down
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Points: 210 		Direct Link To This Post Posted: 21-January-2005 at 13:57
I've got one and would recommend it. I bought it new.
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Points: 5445 		Direct Link To This Post Posted: 21-January-2005 at 15:32
yes good stuff!
E61 520d, slow and buzzy but my wallet likes the mpg.....
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Mike 90 M3 View Drop Down
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Points: 320 		Direct Link To This Post Posted: 23-January-2005 at 17:29
Sorry to steal thread. What does syncing the throttles actually do, when is it necessary?

Cheers
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Direct Link To This Post Posted: 23-January-2005 at 18:07

I bought a carbtune as well - highly recommended from me.  Took all of 10 mins to sync the TBs.

Mike - it makes sure the TBs are sucking in the same amount of air. Recommeded procedure after a valve clearence adjustment, and every now and then to keep things in tune.
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Points: 256 		Direct Link To This Post Posted: 23-January-2005 at 18:20
Does it come with instructions for idiots?
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Direct Link To This Post Posted: 23-January-2005 at 18:25

Yeah it's dead simple.
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Points: 653 		Direct Link To This Post Posted: 23-January-2005 at 18:27
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Points: 2124 		Direct Link To This Post Posted: 23-January-2005 at 19:16

I presumes it's only available for four cylinder engines, what's available for six cylinder models....if anything?
http://www.BMW-driver.net/forum/forumdisplay.php?f=21


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Points: 247 		Direct Link To This Post Posted: 24-January-2005 at 02:56
Does the kit come with all necessary adaptors to fit the ports on the throttle bodies ?
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Direct Link To This Post Posted: 24-January-2005 at 03:10
Originally posted by Robbie Bradford Robbie Bradford wrote:

I presumes it's only available for four cylinder engines, what's available for six cylinder models....if anything?



Well you get four tubes, but that doesn't limit it to 4-bangers.  You only actually need one to do all of them, since you're taking a reading from all cylinders, calculating the average and adjusting so they are each at that average value.  It just makes life a bit easier having the same number of tubes as cylinders.
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Points: 5445 		Direct Link To This Post Posted: 24-January-2005 at 04:34
Originally posted by _Tim_ _Tim_ wrote:

Yeah it's dead simple.



It comes with the instructions how to connect it , but not how to sync an M3!
E61 520d, slow and buzzy but my wallet likes the mpg.....
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ian M635UK View Drop Down
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Points: 264 		Direct Link To This Post Posted: 24-January-2005 at 08:48

Throttle body synchronising is not just setting the vacuums up on each throttle.  It involves setting up of the throttle plates so that they open at exactly the same time and continue to open the same amount up to wide open.  This takes about 2 hours to do.  Only after the throttle plates have been synchronised and valve clearances checked/corrected should you set the vacuums to be identical.

It is unlikely that the throttle plates will be vastly out.  Just to do it properly needs the plates to be set first.

Ian

 

 
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Points: 264 		Direct Link To This Post Posted: 24-January-2005 at 08:50

And heres the link that gives you the scanned BMW instructions to do the synchrocnisation procedure.

Ian

http://home.insightbb.com/~todd.kenyon/throttle.htm

 
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UweM3 View Drop Down
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Points: 5445 		Direct Link To This Post Posted: 24-January-2005 at 14:12
keep your hands off the plates if you are not absolutely sure what you are doing! Can't imagine lot's of them are out anyway. You will make quite a mess if you misalign them.
E61 520d, slow and buzzy but my wallet likes the mpg.....
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Points: 88 		Direct Link To This Post Posted: 27-January-2005 at 03:47
Agreed with UWEm3  I had a set of throttles from an M6 engine presented to me in a box that a guy had stripped for 'concours' cleaning , and when he assembled them the engine wouldn't run properly - it was cheaper for him to get a s/h set and clean them up  than to try and get the originals set up - be warned! The only things that can sometimes wear are the small arms on the ends of the throttle spindles - I can't remember if they come as a spare part or not. If any other parts are damaged / loose then someone has been playing about before  . Also, if you are keen , you can carefully remove the bodies, and thoroughly clean all the deposits around the plate resting( idle) surfaces inside the throttle tubes, then after replacement set up the bypass screws.
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Points: 247 		Direct Link To This Post Posted: 16-February-2005 at 10:59

Well I bought a Carbtune - impressive piece of equipment and easy to use.

I followed the procedure posted by ian M635UK - i.e. turn each by-pass screw one complete turn out and then checked the readings.  They certainly weren't all equal !!  Played about with them until they were all equal and the engine was noticably smoother.

Readings were about 16 on the carbtune which equates to about 215 millibar.  How do these readings compare with your cars ? 
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Points: 2118 		Direct Link To This Post Posted: 16-February-2005 at 11:04
Colin

May use it on mine when it's running, if that's ok?
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215DMX View Drop Down
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Points: 1780 		Direct Link To This Post Posted: 16-February-2005 at 12:31
Originally posted by 2002SportEvo 2002SportEvo wrote:

Well I bought a Carbtune
- impressive piece of equipment and easy to use.


I followed the procedure posted by ian M635UK -
i.e. turn each by-pass screw one complete turn out
and then checked the readings.  They certainly
weren't all equal !!  Played about with them until they
were all equal and the engine was noticably
smoother.


Readings were about 16 on the carbtune which
equates to about 215 millibar.  How do these
readings compare with your cars ? 



(standard 2,3)
Mine all read 21.5 cmHg = 287 millibar, after adding
up and dividing by 4.

I have been informed that factory spec is 300 mBar
+/- 5 mBar. (22 cmHg)


for optimum results you should have your valve lash
done before doing this though .




Edited by 215DMX
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