TheSamba.com :: View topic - anyone know what dizzy this is VJ4 4 BR20 Bosch

Sun Feb 20, 2005 2:50 pm

Anyone know what it is for, it is vw or porsche set up just like a 010 or 019 . Would love to know what it is set at...initially advance and totall and in by what rpms. Just picked it up at a buggy show NOS for $5 along with a 383 for $4!

Thanks

Sun Feb 20, 2005 3:05 pm

I think a BR20 is for a Alfa Romeo.

Sun Feb 20, 2005 11:26 pm

that is a crazy one...! It is exacst same set up as VW like a 019 010 fits rigt in a VW case. I wonder what the specs are and how it would work on a VW ?

How much to toss it on a dizzy machine and check out the specs...?

Mon Feb 21, 2005 6:07 am

The last Alfa distributor I saw was totally unsuitable for a ACVW. Too much advance all in too soon. The Alfa's have a hemi head and can handle that agressive a curve.

It makes a nice doorstop.

Mon Feb 21, 2005 2:18 pm

Found nothing close to this dizzy on anything alfa...but my buddy said there is a VJU4 4 BR20 used on a volvo engine....I think that is just the vacumm added version of mine... VJ4 4 BR20...
todd

Mon Feb 21, 2005 3:40 pm

The "U" denotes vacuum. Then it's a Volo distributor. The only problem is the VW distributor turns clockwise while the Volvo turns counter clockwise.

Mon Feb 21, 2005 6:37 pm

Yes that is what i thought about the U. 36hp bugs and bus dizzys gave me that idea.

BTW it is a B-16 engine dizzy...well the one with the U is....I know that for sure...that is for the single carb low comp engine. There are also 2 higher compresion B-16s one with single carb and a hot roded one with dual SU carbs....I am betting this one I have is for the hot rod models...seemed they prefered straight Mech advance when doing that...

Thanks buddy!
todd

Mon Feb 21, 2005 10:34 pm

actually really looked at it tonite and this dizzy is 100% interchangeable with a 010 019 BR8... it is EXACT the same....only difference I see is teh weights are MUCH larger in the Centrifigal advance system...if I cant find someone to use it with a volvo I will take it apart (it is NOS) and use all the new stuff housing shaft ect and swicth the different weights and any items only from a old tired 019 i have...

heck my try it in a vw, time it at total advance 30-32 with my strobe and see what this thing does....HAHA

Wed Dec 31, 2014 7:47 am

The vj4br20 was used on type 1 based post Vans from Sep 1957. See my blog:

http://lowlightkaizen.blogspot.mx/2014/12/the-holy-grail-of-centrifugal.html