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Made In Mexico 700

posted by  badge988 on  Mon Feb 17 12:04 CST 2003
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I just got a sample of some replacement piston rings for my D24T diesel and Im still puzzled over the markings on the wrapper, "Made In Mexico" Does anyone know if these are any good? The motor is German, pistons are marked Bohn and the crank audi/vw but to rebuild with parts made in mexico?
They seem to be alright, dimensions are on the line but how will these wear when I go after the redline? Anyone have any experience with these or should I dig further for some german made rings? My last high-speed run at 110 MPH for 5 miles took the temper out of my stock rings and now the car is hard starting thanks to the lost compression, boost was at a measured 16 PSIg and water went to 225F but we did catch the SOB.

I have been planning to rebuild for some time now but it looks like sooner than later.

Back to scratching my head.


Badge988







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    Made In Mexico 700

    posted by  Rludwick on  Mon Feb 17 20:45 CST 2003
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    last visit: Sat Aug 31 16:10 CST 2013
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    I'm not the biggest fan of mexican manufacturing, but a good portion of VW's stuff sold in the US is made in Mexico.

    You might want to go to www.vwdieselparts.com they have a tech fourm there and ask around to see if anybody there has had any experience with those rings.

    Let me know what you find out, I'm going to be due for some rings on my D-24 before too long.
    --
    -------Robert, '90 240 wagon, '84 240 diesel , '80 245 diesel








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      Made In Mexico 700

      posted by  badge988 on  Tue Feb 18 14:54 CST 2003
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      I bought some stuff from them and they seem to be alright. Slow plugs and the pump timing tool along with some other goodies. The rings I got from Drivewire along with a T belt and pump belt. I had the mexican rings tested for hardness and composition and from what I got back so far they seem to be pretty good. Hardness was 29C rockwell and the finish was within the fine range of 174u so they would seat with a light crosshatch. The temper of the rings was rather poor meaning they would loose tension after a short period of time however they can be heat treated to retain a better temper. (like some drivers)

      I guess if you are debating a rebuild of your N/A diesel I would say go for the mexican rings, you dont have a turbocharger to deal with. Is your motor an overbore or is it standard? Reason I ask is because you could go with the next larger O/S rings without boring or new pistons and using a ring gap file to fit the new rings by bringing the endgap back to spec yet taking advantage of the additional "spring" of the slightly larger rings. I used to do that when I was a young punk working at a diesel overhaul outfit while struggling through school. Those were the Cummins H series and the Onan L series diesels and I know of 3 that are still going with over 5k hours on the clock in generator service.


      Badge988








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        Made In Mexico 700

        posted by  Rludwick on  Mon Feb 24 06:46 CST 2003
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        last visit: Sat Aug 31 16:10 CST 2013
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        That is what I was planning on doing.
        I really don't want to bore the thing and buy new pistons and I imagine it's got a pretty fair amount of taper by now so a set of oversize with a litle creative cutting seemed like the way to go.
        --
        -------Robert, '90 240 wagon, '84 240 diesel , '80 245 diesel








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    Made In Mexico 700

    posted by  B.C. on  Mon Feb 17 13:22 CST 2003
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    last visit: Wed Mar 28 22:28 CST 2012
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    So are you a lawman driving a 740TD catching speeders? What a sneaky thing to do!

    The rings carry the Volvo flag, if they de-temper, Volvo has made an error in the specs the rings must meet, or the mfg. isn't meeting spec. Can you check with VCNA - maybe a phone call - and shake them up a little?

    Regards,

    Bob

    :>)








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      Made In Mexico 700

      posted by  badge988 on  Mon Feb 17 15:02 CST 2003
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      Actually the rings that de-tempered are the stock rings and I was in the process of looking at the aftermarket rings because of availability. Knowing the D24 is the same as the VW 4-cyl with 2 more holes I went looking in that direction, the turbo jetta.

      As for the speeder, I was off duty at the time of the call but under a mile away from his last known location. I went to take a look and sure enough found him and followed until the marked units could catch up. Funny thing is my TD was having a better time keeping up than the Vics in the curves.
      Perps car was a rice-rocket wannabe Mazda RX-7 that listed as stolen. I normally dont patrol in my own car however it is equipped with lights and siren. No one would take me seriously if I attempted to stop them from speeding!


      Badge988







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