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All over the place...Maxim/Seca build

Discussion in 'The Garage' started by Jeff0133, Aug 16, 2016.

  1. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Decided to use the original footpegs, couldn't really find a comfortable spot for the rearsets, so some paint refresh is involved. IMG_20170527_064915.jpg IMG_20170527_072001.jpg
     
  2. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Getting there....should be ready for the road and final pictures within a week...which means maybe two weeks really...cause shit happens...sometimes.
     
    16VGTIDave likes this.
  3. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Mounted the new rubber on the rear wheel, installed the Yamaha rim ´┐╝decals. IMG_20170528_183750.jpg I had ordered a 40 teeth rear sprocket from the UK, which is when the shipping gods decided it was time for their offering...so that fell through.:cussing:
    So I put a 38 on...We'll see what it does with the front 15T.
     
    16VGTIDave likes this.
  4. 16VGTIDave

    16VGTIDave XS400 Guru Top Contributor

    How did those decals fit? I saw the reflective (???) yellow ones at a local dealer and considered them until I saw the price. $26+tax for a couple strips of reflective tape? Probably designed for 17" wheels rather than 19" and 16"?
     
  5. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    They fit easily, they are for 17-18 inch wheels.
    They are quarter circle strips that overlap.
    Made for 17-18 inch wheels, the seller provides an extra strip per wheel to fit Up to 19 inches.
    They are made of a "stretchable,malleable" vinyl so they conform to the wheel.
    As for durability...I cannot tell as of now, but will see with use/mileage.
     
    16VGTIDave likes this.
  6. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Little update.
    Yesterday I installed the rear brake switch, chain, adjusted tension on the chain, torqued rear wheel...etc
    Not exciting stuff but progress none the less.
    Then put some gas in the tank which leaked from one of the petcock's screws:wtf:...so...drained the tank took the petcock out to see that I had forgotten to change the oring that mates to the tank:doh:.
    So once that was done,put everything back together...and...vroooooum!
    Started up like a champ!..and revs great through the band, the Seca exhausts give a great sporty sound.
    I followed Dave's example....dropped the Jets from 145s to 127,5s...what remains is to see if it is rich/lean,test under load but I am pretty happy with the results so far...and yes I have pods but they are on the stock stacks, with stockIsh exhausts (stock headers with stock mufflers but true 1-1)
    ..waiting for signals...and still have to set-up the speedometer magnet pick-up and change the rubber on the front wheel.
    Getting there.
     
    16VGTIDave likes this.
  7. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Installed the new rubber on the front wheel IMG_20170601_073525.jpg
    Then installed the magnet for the speedometer IMG_20170601_073535.jpg
    Now I need to fab a bracket for the pick-up sensor,maybe one that would be held by the Speedo Drive bolt and the axle pinch bolt.
     
    16VGTIDave likes this.
  8. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Got out to the shop this morning with coffee in hand...the smell of gasoline was overwhelming:wtf:
    There was a puddle of gas under the bike...gas was coming out of the left pod.
    So took off the pods to let them dry, took out the carbs, reset the floats,then tested the petcock and sure enough it was the culprit, it was flowing in all positions even though it's vacuum operated...so my guess is that the diaphragm in there is toast even if it looked good when I opened it up.
    Thought about a rebuild kit but was worried that it would just be putting off the same problem, so I ordered a non-vacuum one from mikes xs as I read from XSCHRIS that they work well.
    Now I have a DOHC but it has a SOHC tank from 1979 so fitment should be good.
     
  9. 16VGTIDave

    16VGTIDave XS400 Guru Top Contributor

    A leaking petcock is the first issue. I had to polish all the sealing surfaces in my petcock with 2000 grit wet paper on a glass plate to get it to seal and operate smoothly. It's been fine for 3 years and a couple hundred litres of fuel.

    I'd suggest you pull the carbs (again) and check the o-ring on the needle seats (they should be a snug fit), the needle, and the float. Then check the float levels on the bike, with it running, as described in the manual. 3mm below the carb body/float bowl seam with the bike upright. I check mine with the bike on its wheels due to my drastic change in rear ride height, which has the bike raked forward so the carbs are no longer level, and my lack of center stand.
     
  10. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Had a look at the float needles, oring looked fine but looks can be deceptive....i'll change them out on both carbs.
    Thanks.
     
  11. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    IMG_20170603_072010.jpg IMG_20170603_072600.jpg Made a Speedo sensor bracket with CAD...(cardboard assisted design)
    Then made out of steel and painted and installed. IMG_20170603_101324.jpg
     
    trippel and 16VGTIDave like this.
  12. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Getting on...
    Fabbed Up a licence plate Holder. IMG_20170603_133554.jpg
    And put some Yamaha valve plugs. IMG_20170603_133615.jpg
     
  13. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Well boys...and girls.?...
    End of the road. IMG_20170603_172431.jpg IMG_20170603_173632.jpg
     
    trippel, OopsAboutThat and 16VGTIDave like this.
  14. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    So...all in all...everything is new on this bike...down to the conrod bolts and bearings..
    The total cost of the build...including buying the bike and donor....4357,31$...
    Not including welding materials, cut-off and grinding disks, shop towels,carb cleaner,gloves,time....and everything else....so somewhere around 5K. sounds right.
    Could I have bought a liter bike in good running condition for this price....of course.
    Would I have learnt as much and been part of a supporting community like this one...of course not.
    I rode the bike around the neighborhood...it goes like a dog shot in the ass!...
    Will it need further tuning....Yep!
    But I will do so here with your help still.
    Thanks for your support.
    I LOOOVVVVEEE THIS BIKE!
    this is not over as will fidget around with it some more but summer is here and it is time to enjoy.
    So thank you all again for the advice/support.
     
    spectra and 16VGTIDave like this.
  15. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Some before/after IMG_20160713_161446.jpg IMG_20170603_172431.jpg IMG_20160713_161458.jpg IMG_20170603_173632.jpg
     
    spectra and xschris like this.
  16. Very nice and personalized. Especially all the little details with your color scheme.

    Your build will definitely help me with mine.

    Thanks for sharing.
     
  17. asadam1

    asadam1 XS400 Member

    15
    2
    3
    Ohio
    Looks great Jeff! Congrats on the finished product!

    Also, I am looking at repainting the frame, gas tank, and engine. What paints and materials did you use, as well as the prep work for painting?
     
  18. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Prep is Key...
    Sandblasted all engine parts and cooked in oven for any off-gasing...then painted with VHT high temp paint and the oven cured as per instructions on can.
    For the frame I used VHT rollbar paint.
    For the tins(tank,cowl and Fender) I used the method on Do the ton "Rattle can bling".
    Patience and patience and beer...
    Makes for a good finish.
     
  19. BBS360

    BBS360 XS400 Guru Top Contributor

    Looks fantastic!
    One of the best custom DOHC bikes I've seen.
     
    Jeff0133 likes this.
  20. Jeff0133

    Jeff0133 XS400 Junkie Top Contributor

    Thanks, much appreciated
     

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