Go back to home

Twin DCOE's on Kent 1600 Flooding

Author
Post
Essentials Only Full Version
harrier
Aficionado
  • Total Posts : 255
  • Scores: 6
  • Reward points: 4247
  • Joined: 2011/08/01 11:02:49
  • Status: offline
2011/01/19 22:36:32 (permalink)
0

Twin DCOE's on Kent 1600 Flooding

Hi,

Getting a bit frustrated here with the twin 40 Dcoes on a 1600 (ported, big valves, etc), 638 grind cam. Its constantly fouling the plugs (1 & 4) are the worst and really doesn't want to idle or even clear up to rev.

I've checked the jetting which matches with a few sources of std settings for a mildish 1600, float heights were way too high (about 5 mm), so I've reset them to 8.5 mm.

Not sure where to check now. I'm going to double check that the fuel pressure isn't too high, but given I'm using the stock pump I would have thought it would be ok.

Any thoughts ???

Cheers,

Mark
#1


4 Replies Related Threads
    Pansy
    Enthusiast
    • Total Posts : 40
    • Scores: 0
    • Reward points: 1900
    • Joined: 2011/08/01 11:02:49
    • Location: Sydney NSW Australia
    • Status: offline
    RE: Twin DCOE's on Kent 1600 Flooding 2011/01/23 12:23:13 (permalink)
    0
    Maybe the chokes are too big? Or a dead seal leaking fuel? Pretty damn annoying by the sounds of it, I had the same problem except the jets were WAY too big on mine. Good luck with it anyway.
    #2
    harrier
    Aficionado
    • Total Posts : 255
    • Scores: 6
    • Reward points: 4247
    • Joined: 2011/08/01 11:02:49
    • Status: offline
    RE: Twin DCOE's on Kent 1600 Flooding 2011/01/23 19:45:44 (permalink)
    0
    I think its the seals. I checked all the jets with a few online resources and I seem to be on the money. After a bit of cleaning and meassing about it started fouling 1 &3[x2x][x2x][x2x][x2x].

    Agree with the damn annoying thought. Suspect your on the money with the leaking seal. Time to put a kit through them both I think.

    I ended up putting a single DCD down draught as a temporary measure and my problems went away.
    #3

    Mk1 Lotus
    Supporter
    • Total Posts : 204
    • Scores: 3
    • Reward points: 2811
    • Joined: 2011/08/01 11:02:49
    • Location: Sydney Australia
    • Status: offline
    RE: Twin DCOE's on Kent 1600 Flooding 2011/01/24 06:31:55 (permalink)
    0
    Webers flood because:

    Float level too high.
    Needle and seat not sealing.
    Float is taking on fuel and has sunk.
    Not mounted to manifold correctly, rigid not soft mounted.
    #4
    harrier
    Aficionado
    • Total Posts : 255
    • Scores: 6
    • Reward points: 4247
    • Joined: 2011/08/01 11:02:49
    • Status: offline
    RE: Twin DCOE's on Kent 1600 Flooding 2011/01/24 20:47:10 (permalink)
    0
    Hmmm, I'll check the needle and seat again and lower the float height. I reset them both to 8.5mm (brass floats) and they seemed to be in good shape. I'm running soft mounts.

    With the flooding though, if its a float issue, wouldn't both barrels on the one carb be running too rich ?

    Thanks for the pointers.

    #5
    Jump to:
    © 2025 APG vNext Trial Version 5.1