Help with Peugeot 404 Solex Carb made in China
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  1. #1
    Tadpole
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    Default Help with Peugeot 404 Solex Carb made in China

    I am having some Carb issues and thought about buying a new Solex 34BICSA 3 Carburetor from a Chinese manufacturer that lists this as the proper Carb for my 1966 404. I have one made in Argentina and think it is not working great, and wondered if anyone else has purchased a newly made Carb from China or Argentina.

    Thanks

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  2. #2
    Fellow Frogger! Molerpa's Avatar
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    Quote Originally Posted by redwood View Post
    I have one made in Argentina and think it is not working great

    Look at it. If he says "hey, che... I'm working THE BEST POSSIBLE", not only that is working great, but also is authentic argentinian.



    Now, on topic. What is the problem you're facing?


    Quote Originally Posted by luthier View Post
    It is simply impractical to expect a petrol motor to get through too much water. That's why God invented diesels.

  3. #3
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    Default China Carb

    I bought one of these solex carbs for my 1968 404 restoration the car had no carb when I bought it ,after some research I bought the chinese solex for $105.00 I had to make a gasket as none is supplied.
    Once fitted I was able to start the motor after 4 years it ran smoothly but was not driven on the road. There is a petrol leak from the carb which may be my home made gasket ?.
    The carb came in a solex box and looks like the the real thing. I'am pretty happy with it.

  4. #4
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    Default 404 BICSA carb adjusment issues

    Hi fellas, Edmund here from South Africa. I bought mysef a new carby for my 404 about two months ago. This item has given me such a hassle. I'm even thinking of rebuilding my original PBICA9. I think this one is called the BICSA, and apparently they were used on XC6 generation 404s. The car always jerks when you drive slow. You always have to push the pedal to counter that until you come across a flatspot. It has a big screw just below the choke(pic attached). When you turn this fully clockwise(closed position),car won't start in the mornings until you turn it counterclockwise. A hissing(choke-like) sound comes out of the engine when it's at that position. My question is, what is the function of this screw? Should I fiddle with it at all? There is the fuel and air screw on the carby but I haven't touched those at all while trying to do idle adjustment because I need to understand this screw first. The jets on this unit are idling 47, main 142, air correction, 175. On the original pbica it's idling 50, main 145, air correction is 170. My 404 is a 1974 South Africa spec which came factory fitted with an XM7. Waiting for you to shower me with your expertiseHelp with Peugeot 404 Solex Carb made in China-carburetor_for_peugeot_404_504_634553893644088580_4.jpg

  5. #5
    Tadpole
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    Default Carb problem

    Edmund,

    I'm afraid you bought Chinese Junk. I bought one of these and could never get it to run smoothly, then found a rebuild kit for my old carb and found a torn gasket inside. Now it works great. I'm not sure what that screw does, but if you can refurbish an original you will be happy forever.

    Good luck.

    Paul (Redwood)

  6. #6
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    Yes, what can go wrong with the originals?


    Quote Originally Posted by redwood View Post
    Edmund,

    I'm afraid you bought Chinese Junk. I bought one of these and could never get it to run smoothly, then found a rebuild kit for my old carb and found a torn gasket inside. Now it works great. I'm not sure what that screw does, but if you can refurbish an original you will be happy forever.

    Good luck.

    Paul (Redwood)

  7. #7
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    i have the same carby in my 505, plus 2 spare ones, and i dismantled it couple of times. just now i replaced the throttle shaft bearings, i bought the last two from serie04. one was perished completely.

    the big screw is the idle speed screw, apart from it there is only one more screw to adjust- for the mixture.

    webcon sell those carbies, which they told me are genuine and not chinese.
    http://www.webcon.co.uk/shopexd.asp?id=10864
    Last edited by 2pac; 9th August 2014 at 06:11 PM.

  8. #8
    Fellow Frogger! renault12's Avatar
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    Yeah, apparently they're rubbish. Shouldn't come as a huge surprise though considering the cost for a proper rebuild from a reputable place will set you back $700ish.

    I had a good look into it a few months back; the reason I think the Chinese are reproducing these solex carbs is the porsche/vw market.. 356's and larger engined beetles use the 34 PBIC too. At least it means you can get good quality rebuild parts and expertise as, generally speaking, these guys are willing to pay for quality.

    I bought some rebuild bits from a place in the US that does only porsche 356 solex rebuilds.

    Not cheap, but as graham said, the originals are pretty damn good and if you can replace bits with new parts as good in quality as the originals then I think you'll be on to a winner.

    Junk it and grab the bits to repair yours. The world is full of horror stories about these Chinese solexes..

    Let me know if you'd like the site for the carb specialist I found.. I think if you search 'DS Solex carb' you should find the thread.

    Cheers,

    Toby

  9. #9
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    Weber made a 34 mm single barrel downdraft which was a decent replacement for the Solex 34 Pbica.

    Believe that they're pretty hard to find these days

  10. #10
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    Trouble is they had a 27mm venturi, as in the 1800, and didn't work that well on a 404. Big H and I did some testing with his 404 and decided to put the original back on.
    A standard 404 engine has excellent torque due to the tuning of the inlet system.
    Graham

    Quote Originally Posted by bahay View Post
    Weber made a 34 mm single barrel downdraft which was a decent replacement for the Solex 34 Pbica.

    Believe that they're pretty hard to find these days

  11. #11
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    Thanx fellas for all your input. I will junk this and rebuild my original. They are not even expensive to rebuild in SA. You pay between R750 to R1000

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    Fellow Frogger! stew's Avatar
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    Well chaps, I have just one of these jiggers to work! Argentinian scourced.
    The venturi was a 28mm. Perhaps for an 1800 single or 2000cc twin. The
    Solex 404 1600cc had 26mm so the air speed past the emulsion tube in a 28mm is too slow which won't suck out the fuel. The reason I had a go at getting the new unit to work was the original carb emulsion tube broke when I tried to remove the air screw in the top and the throttle bushes had to be done. What I did was to use the original 404 venturi and gently turned it down in the lathe to suit the new carb. I needed to increase the main jet size as what it came with was still lean. It starts and idles cold, no choke and is very flexible. Idle mixture is nice too. I recall the venturi to be 26mm down from the 28 or so it came with. Perhaps a venturi from a 403 carb might be even better for the new unit? Don't forget that ignition timing also has a lot to do with flexibility and it's always a good idea to measure the advance curve and get it right by the book before going to mixture tune problems.
    Last edited by stew; 21st August 2014 at 07:12 PM.

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    1000+ Posts Wildebeest's Avatar
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    I be 'mazed at the telephone number figures being quoted for the Solex 34 PBICA carbs overhauls.
    It would involve nothing more than the throttle shaft re-bushing, replacement of broken emulsion tube [quite common] and a bead blast to restore the appearance plus a gasket kit.
    Fortunately the venturis are removable to allow any tuning.

    No better carb for the 404.
    Have seen them substituted with a Holden Stromberg!

  14. #14
    1000+ Posts robmac's Avatar
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    That's good and useful info Stew, your thread should receive 1000s of hits from worldwide locations.
    From all the poor [email protected] trying to get them to work properly.
    Not quite a faithful "copy" eh!

    I fitted an 11/2 SU to my "Reagan's special" 404 1600. The was a huge range of needles available at that time. Had very positive results. But SU are very forgiving.

    That was before the 2L engine.
    Last edited by robmac; 21st August 2014 at 08:26 PM.

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    Quote Originally Posted by renault12 View Post

    Let me know if you'd like the site for the carb specialist I found.. I think if you search 'DS Solex carb' you should find the thread.

    Cheers,

    Toby
    Yes I'd appreciate this information for interest sake Toby. I tried googling it, didn't get anything

  16. #16
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    Now that you guys brought up the emulsion tube issue, I'm wondering about is the 175 air-correction jet on this chinese carb,
    is it too big for my 1800, therefore making it leaner or is it tune-able? The original size on the PBICA is 170

  17. #17
    Fellow Frogger! stew's Avatar
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    Let me check the main, carb number series on this once I have got to work and I reckon you'll find the main you have is too small.
    Get back to you today I hope!
    Last edited by stew; 22nd August 2014 at 12:28 PM.

  18. #18
    Fellow Frogger! stew's Avatar
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    OK, Carb is solex 34 BICSA 3. PEU A 172 2 . E 12790 000 . MAIN should go to 145. Air at 160. Venturi must be 26. ( Solex venturi in 404 number is 32-26. 26mm venturi).
    Ensure the distributor is correctly tuned to the M 48 curve.

    Best of luck!

  19. #19
    Fellow Frogger! renault12's Avatar
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    Quote Originally Posted by Edmund View Post
    Yes I'd appreciate this information for interest sake Toby. I tried googling it, didn't get anything
    Www.356carburettorrescue.com

    Cheers,

    Toby

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    Quote Originally Posted by stew View Post
    OK, Carb is solex 34 BICSA 3. PEU A 172 2 . E 12790 000 . MAIN should go to 145. Air at 160. Venturi must be 26. ( Solex venturi in 404 number is 32-26. 26mm venturi).Ensure the distributor is correctly tuned to the M 48 curve.Best of luck!
    I currently have 175 air correction, 142 main and 47 idling jet on this chinese unit so I must swop main to 145, air correction to 160, I'll try that but what about the venturi, I'm not sure what the size is on this carb(my engine is an 1800), how do you check that? Yes my M48 is correctly tuned.

  21. #21
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    I think Stew was talking about an Argentinian carby.
    The 1800 had a 27mm venturi.
    Starting from that the main jet is then set to ensure good acceleration down low, the air corrector then leans the mixture at higher revs, would be too rich otherwise.
    An exhaust gas analyser would be the way to go, you can buy kits from Jaycar, although you need to mount an oxy sensor in the exhaust system for these.

    Quote Originally Posted by Edmund View Post
    I currently have 175 air correction, 142 main and 47 idling jet on this chinese unit so I must swop main to 145, air correction to 160, I'll try that but what about the venturi, I'm not sure what the size is on this carb(my engine is an 1800), how do you check that? Yes my M48 is correctly tuned.

  22. #22
    Fellow Frogger! stew's Avatar
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    Edmund,
    The carb looked the same as the one in the photo above so the sizes might go close for you. Try the 160 air first though.
    A venturi is a reduction in the throat size of the carb so that it increases the air speed past the emulsion tube which supplies the fuel into the air stream. If the air speed isn't fast enough past the emulsion tube you get flat spots or a dead feeling in the engine. That is a too lean condition so, from what I saw on the last carb I think the venturi it came with was to suit a 2l engine, it was very "open" around the tube. I think it measured 28 or so. What you need to do is lift the top off the carb and measure the diameter of the venturi reduction area. It is removable with a tiny screw at the rear of the carb body to keep the venturi in place. I suggest you take the carb off and do this job on the bench.It's a lot easier and safer. The venturi may need to be gently punched up from under to get it to move out for you if it is the wrong size. The same goes for the old solex unit. The old unit will probably need to be reduced in it's outer diameter to fit your new unit's bore and I'm sure a little time with some abrasive paper will get it turned down to slide in nicely.
    No amount of jet changing will alter the effect of a venturi too big for the engine so it will be really worth your while to have a go at measuring the thing first if the smaller air correction isn't quite right. I can take a few photos of how to do this if you like.

  23. #23
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    Help with Peugeot 404 Solex Carb made in China-4041.jpgHelp with Peugeot 404 Solex Carb made in China-4042.jpgHi Stew, I finally get this venturi story now, it makes a lot of sense. I've actually decided on rebuilding the old unit but I'd still appreciate it if you'd share the picture illustration of how to remove and replace the venturi. Please visit this threadEUGEOT 404/504/505 XN ENGINE MANAGEMENT and share some of your thoughts on what we're discussing there. I was pleasantly surprised when fellow froggers mentioned that you're the dude that owns that beautiful peugeotech 404. I have two lovely 404s and one of them is almost the same colour as yours(pics attached)

  24. #24
    Fellow Frogger! stew's Avatar
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    Lovely machine!

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