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robin2cv
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Joined: 18 Jun 2007
Posts: 144
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 Posted: Tue Mar 25, 2008 2:59 pm Post subject: |
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hey Tero
Do you now the specifications of the race camshaft, I also drive with a visa engine with lightend flywheel and won't another camshaft.
Witch gearbox will you put on it?
greets Robin |
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dieselflosse
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Joined: 20 Nov 2007
Posts: 72
Location: Finland
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| Posted: Tue Mar 25, 2008 3:33 pm Post subject: |
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| robin2cv wrote: | hey Tero
Do you now the specifications of the race camshaft, I also drive with a visa engine with lightend flywheel and won't another camshaft.
Witch gearbox will you put on it?
greets Robin |
I am not sure about the details of camshaft, but the guy said something about 300 decrees...
The gearbox will be original from '82 2cv6.
The block of engine is from 2cv6 and some guru has put visa cylinders on it. So, I can use std gearbox. Maybe gearing will be too slow but I start this tour to 2cv tuning with minimum changes. Just put this engine (which has driven AZU over 120km/h  ) in and test.
I am aiming faster starts and easier drive to the top of hills instead of high top speed.
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robin2cv
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Joined: 18 Jun 2007
Posts: 144
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| Posted: Tue Mar 25, 2008 4:49 pm Post subject: |
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I drive it whit a dyane box but I'm thinking of putting a lna gearbox on it with 145/15 tyres on the front.
On the cats site there is a program to calculate and its said that would be the best choose. Only 1Procent difference.
greetings
robin |
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dieselflosse
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Joined: 20 Nov 2007
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Location: Finland
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| Posted: Mon Apr 28, 2008 8:29 am Post subject: 652 |
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Hi!
Now it is done. The Engine is installed during the weekend. Against previous information it not equipped with a light flywheel but the lighest original one. The camshaft is 305 degrees or something like that.
There is much more torgue with this engine and it takes quite high rpm (I drove 110 3. gear , only 95 4.  ).
But the carburetor jets are not optimal. Do you know what are original jets for visa? Now I have aprox. 125 (my own drilling) for 1. throad and 130 for 2.
The first sound: http://s165.photobucket.com/albums/u41/Akaile/?action=view¤t=CIMG3319.flv
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robin2cv
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| Posted: Mon Apr 28, 2008 8:48 am Post subject: |
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hey dieselflosse,
I have no idea whats the original jets of a visa engine.
Maybe you have to go on a dyno t get it right.
I gues its a faster on his acceleration.
Did you drove it whithout the air box? I drove my 2cv for 50 000km without any airfilter and I gues I was lucky because it never lat me down.
The visa or 2cv airfilter box does not allowed the engine to breath good.
try it whitout or fit a nylon sok on the carburator to keep a bit of sand out.
Be carful that the engine does not breath the sok into the carburator.
Robin |
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dieselflosse
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Location: Finland
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| Posted: Mon Apr 28, 2008 9:08 am Post subject: |
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Robin, what jets you use?
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robin2cv
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Joined: 18 Jun 2007
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| Posted: Mon Apr 28, 2008 9:27 am Post subject: |
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I just use the original ones.
I did not open the carb.
But this or next week I will open the engine maybe I can see it than.
robin |
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robin2cv
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| Posted: Mon Apr 28, 2008 9:35 am Post subject: |
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I have asked it o somebody who might now it.
I hope now it this week I keep you posted.
Robin |
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dieselflosse
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Joined: 20 Nov 2007
Posts: 72
Location: Finland
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| Posted: Mon Apr 28, 2008 10:41 am Post subject: Visa jets |
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| robin2cv wrote: | I have asked it o somebody who might now it.
Robin |
I also have sent mails to the different places. Let's see where the first answer will come.
If someone else knows the answer feel free to announce it... 
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dieselflosse
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Joined: 20 Nov 2007
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Location: Finland
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| Posted: Mon Apr 28, 2008 11:07 am Post subject: Specs |
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I found this page.
The answer is 125+-5 / 130+-5. Now the only problem is which one is for 1. and which 2. throad...
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robin2cv
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Posts: 144
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| Posted: Mon Apr 28, 2008 11:17 am Post subject: |
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Oke I went looking in my books and this what I found in a kluwer book.
its for visa engine 1979-1982
Carb solex 26/35 csic-209
I give you all the items I have because i do not now what items you mean whit 1st and 2nd
1st || 2nd
Venturi 21 || 26
Mainjet 120/130 || 125/135
airjet 100/140(1F4) || 140/180(2AC)
mixetube 21789 || 21788
stationaryjet 36/46
stationary airjet 180/200
mixture adjust 165
accelarationpump jet 30/50
floatnidle 170
This all I have remeber its for a solex maybe a weber carb is difference.
I have try to translated it for you ist maybe not to best :)
greetings Robin |
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dieselflosse
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Location: Finland
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| Posted: Mon Apr 28, 2008 11:57 am Post subject: |
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| robin2cv wrote: | Mainjet 120/130 || 125/135
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That was the info what I was basicly looking for. From one other page I saw that the physically bigger jet should be smaller internally
So, now I have 130/prox. 127 on use (just opposite order). Anyway I think that next action is to remove air box and adapt a free filter (what I earlier used in my turbo Merc). After that back to this jet play.
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robin2cv
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Joined: 18 Jun 2007
Posts: 144
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| Posted: Mon Apr 28, 2008 12:01 pm Post subject: |
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maybe yoy can instal a lambda gauges then you can see what it does whit the mixture.
greetings robin |
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dieselflosse
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Location: Finland
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| Posted: Mon Apr 28, 2008 12:14 pm Post subject: |
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| robin2cv wrote: | maybe yoy can instal a lambda gauges then you can see what it does whit the mixture.
greetings robin |
That has been on my mind, but it is a little bit strange area to me.
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dyanut
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Joined: 05 Aug 2007
Posts: 177
Location: North Yorkshire
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| Posted: Mon Apr 28, 2008 10:21 pm Post subject: |
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dieselflosse,
is it a Visa carburretor which you're using?
The 26/35 'family' of carburretors includes at least three types, with different sizes of venturi. The sizes are marked on the side of the float bowl nearest to the alternator.
There were the early 2CV/Dyane/Ami type, which have venturi of 21mm and 24mm. The original primary and secondary petrol jets for these would have been 120/125 & 70.
Then there were the later type, mostly fitted to 2CVs but also found on some Dyanes, which have venturi of 18mm and 26mm.
Petrol jets for these were 102.5/105 & 87.5/90
The carbs originally fitted on Visa engines always had venturi of 21mm and 26mm, hence the 120/125 & 125/135 petrol jets.
You shouldn't really need to move too far from the original jet size, perhaps 2 steps on the primary, which compensates for the leaning effect of unleaded fuel. This is particularly true of those 18/26 carbs, which were set quite lean from the factory and usually need the primary petrol jet increasing to 107.5. ( With 'blown' induction as used on Dyanes and Amis, 110 works well.)
So, if you could confirm which type of 26/35 you've got, that would be a useful step in the right direction... |
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