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What 20b "#" do you have?

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Old 02-08-16, 11:19 PM
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Might have to get some of this information together to keep track of them all.

Trying to find out what mine is, but I think it may be a new Mazda one as it has no numbers at all.

See what I can find when I'm in front of it.
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Old 02-17-16, 08:07 PM
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There is already a thread on this, check the archive.
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Old 02-21-16, 02:44 PM
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499 here, but it's a rebuild. No idea by who. There's paint pen markings all over the housings/irons. No stepped dowels. Where on the E-Shaft would I find the number?
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Old 05-08-16, 04:04 PM
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I am the proud owner of D456, not installed in a car yet.
I haven't opend it up yet, buy a camera inspection through the sparkplug holes revealed a rusty rear rotor. So it will require a overhaul in the future
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Old 05-08-16, 07:57 PM
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Got my 20B few weeks back, Mazda reman B882, open it it up, everything is mint inside, bearings looked mint, no step wear, mint housings.

Will be built with a S4 T2 Balanced, lightened, clearenced rotating assembly, large street port, 4 oversized thru bolts.
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Old 12-12-16, 12:04 PM
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# 567 for me.

Came with a car I purchased I think it's been apart before as all the irons are painted.

I think Banzai or Pettit built it many years ago, but porting is stock, no idea what's inside we will see if it holds together on the dyno in spring!
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Old 11-08-18, 03:37 PM
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I picked up a 3 rotor two years ago. She is # B300.
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Old 11-25-18, 02:23 PM
  #408  
20B FD|20B Cosmo|S5 TII

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Wow, I totally forgot about this thread...
I have D659 in my FD, and I imported a Cosmo, so I also have C329.

Last edited by paximus; 11-25-18 at 02:26 PM.
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Old 12-03-18, 06:06 PM
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TX 20B number
Originally Posted by now
Just curious what number does you engine have on it?
you will find the number stamped on the front rotor housing.
lets gather some info here on run numbers etc.
it will be either a number or a letter followed by a number.
my number is 454

matt
My 20B is marked C927. The 20B insignia has black paint around it with the 20B raised numbers unpainted.
Marc
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Old 06-14-19, 02:15 PM
  #410  
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Old 06-26-19, 01:50 PM
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Just opened her up...will need a rebuild.
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Old 10-01-19, 07:43 PM
  #412  
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Old 04-19-21, 07:37 PM
  #413  
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#743 no letter
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Old 09-26-22, 03:48 PM
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D 633
Originally Posted by driftxsequence
#743 no letter
Importing from Japan.

Last edited by tavisescu; 09-26-22 at 03:51 PM.
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Old 10-03-22, 11:52 AM
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This thread goes way back. I still have my ‘preserved’ 20B. All three rotor housings are stamped

Stamped rotor housings. C927. However, there is supposedly another ‘engine #’ somewhere I’ve never found.
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Old 01-16-23, 02:26 PM
  #416  
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Happy to join the group. Just got B526.
What 20b "#" do you have?-jndoe3t.jpg

Had a stuck side and corner seal from loads of carbon buildup, but otherwise is pretty minty inside.
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Old 03-04-24, 04:36 PM
  #417  
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Old 04-18-24, 09:26 PM
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Old 04-18-24, 09:27 PM
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