Jump to content

carbonboy

Donor
 View Profile  See their activity

  • Posts

    1843

  • Joined

  • Last visited

  • Days Won

    19

 Content Type 

Everything posted by carbonboy

  1. carbonboy
    The idle mixture screws were 4.5 turns out from seated & the wideband was only just reading richer than 22.4 AFR at idle. Figuring that they were at the limit of their adjustment, it was out with the #38 jets & in with the #42 jets. This process gets easier each time.
  2. carbonboy
    People seem to actually notice when you use the horn now. I kinda left the squealing noise alone, trying to solve it was starting to do my head in so I left it. Turned the cd player volume up, can't hear it. However, when playing with the mixture screws attempting to richen the idle, I discovered something. The noise used to stop at about 1,800rpm, as I wound out the screws, the rpm at which the noise would stop got lower & lower. At present, the noise is pretty much constant at idle, but the mixtures are getting better. I have NFI what this means/what the cause is, just an observation.
  3. carbonboy
    Lots of ways if the motor's complete: lack of supercharger/IC, distributor/leads instead of CAS/coilpacks, intake manifold... If it's just the block & cylinder head, the 4A-GZE cam cover has 'supercharged' on it. But since they can be swapped over, it's no guarantee.
  4. carbonboy
    Yep, goes from minimum to maximum height in four & a bit pumps (unloaded).
  5. carbonboy
    I'll admit that despite having put one together, I don't know enough to immediately pick up on what you're up to. What I have seen that you've done, I like. I cheated when it came to my cylinder head rebuild, just handed it over to my local guru & let him do his thing. If I were US-based, I'd use you.
  6. carbonboy
    Good to see that you're still up to your old tricks. :P
  7. carbonboy
    More like I just haven't logged in/posted in a while. Besides, I'm a FWD fan, I usually get put into the loser category by default. :P ^This. We may hang $h1t on each other, but you're not going to cop any for getting out & having a go.
  8. carbonboy
    Slight thread revival...Scored this as a birthday present. Sub-$200 delivered & is the next model up from the two 1,500kg units we have at work. Haven't had any dramas with them, so I have some confidence that this will have a similar track record.
  9. carbonboy
    That rain we had last night will settle the dust nicely at Pakenham, the ground seems to drain better than Werribee, so chances are the event will be on. I had to make a call, either compete in the VMC, or spend the day catching up with some close friends I haven't seen in a while at their offsprings birthday then have dinner with my sister/parents. I'm still ~1,000km & a dyno-session short of my preferred engine run-in, so no competition yet. Good luck man!
  10. carbonboy
    Whatever it is, it doesn't make the noise when the engine is internally at atmospheric pressure. I.e I have the cam-cover pipe open to the air. The engine idles rough as guts if I do though. Did another upgrade today courtesy of the TCCAV Wrecker Run. Pathetic standard horn replaced by a SAAB 900 item.
  11. carbonboy
    I was wrong, yet again. Drilled/tapped a thread in one of the cylinder head casting-plugs for a hose fitting & used that as a breather. Connected the cam-cover fitting to the air filters with a pcv valve inline as a fresh air return &.....the noise is still there. FFS. Not being able to solve this is still less annoying than the noise itself, so I will find a solution.
  12. carbonboy
    I'd like to correct myself there, it's NOT the oil seals doing the squealing. It was while doing some idle-mixture tuning that I got distracted & did some experimenting. Then filmed it, so you know why it's so annoying. In the first part of the video, I give it a little rev & as the revs die, the noise starts. This is what I have to put up with. In the second part of the video, I have the cam-cover breather hose disconnected & blocked off, I'm not sure how well you can hear it in the video but the noise coming from the breather fitting due to air going through it sounds awfully familiar. Add some strong vacuum to that & I think I have my culprit.
  13. carbonboy
    I still think you're onto something with a PCV valve of some description incorporated into my setup. Umm...air-cleaner box...I'll get around to making one one day... :wink: I like to think I'm keeping the environmentals happy. The vapour from the crankcase goes from the cam-cover to a catch-can, then directly to the intake runners themselves. I used to run it to the carburetor trumpets, but had issues with the oil destroying air filters & gunking up the carbs. That & it never seemed to vent all that well. I had the opposite problem of what I do now, with oil being forced out of all the things. Then again, that was Version 1.0 with semi-glazed bores at that stage.....Urgh.
  14. carbonboy
    I just double-checked, there is no PCV valve on a 4A-GE Bigport or the Smallport that's here as well. It's just the S-shaped hose, no valves. But what you're saying makes sense, at the moment the air is being sucked into my engine via the oil seals/dipstick. I need to find a way to let more air in to stop the squealing, but not so much that I lose the ability to use the MAP sensor that is tied into this same vacuum hose setup. I did connect my charcoal canister purge line to it (so fuel vapour get burnt as well as oil vapour) but that barely seemed to help at all. In that photo, is the smaller diameter hose the one that carries the oil vapour to the intake & the larger one the fresh air return?
  15. carbonboy
    From memory, the EFI setup doesn't have one, just an S-shaped hose that runs from the cam-cover to the plenum. Will double-check that after work tonight. Thinking that installing one might just be a good idea. By second tube...I'm guessing you're referring to a K-motor setup?
  16. carbonboy
    Managed to suss out what the noise is, it's air being sucked into my engine. Removing the breather hose from the cam cover & blocking the end with my finger created a strong vacuum & the noise was gone. So, not the hoses/fittings. Reconnected the hose to the cam cover, the noise comes back. Using a short tube to my ear, I've traced the sound to the dipstick tube/front main seal & at a guess, the rear main seal as well. Given that the noise only occurs at certain vacuum levels, it's the only conclusion I have. Saving up some spare coin for some dyno-time, my butt-dyno says this version has more in it. Need to play with the idle mixtures as well.
  17. carbonboy
    We could probably get away with it if we incorporated a 4x4 recovery practice day into the event. That goop is hub-deep.
  18. carbonboy
    Slight change of plans with Round 1. :(
  19. carbonboy
    I think you'll beat Bert in his own car. ;) Great guy. You do more servicing when said motorkhana car is also your daily. :P I haven't managed to rack up the kilometres on the new engine that I'd like, so no playing for me. Instead, I'm using it as an opportunity to gain some CAMS Official credentials (scruitineer etc). No plans to upgrade my licence, but most events need officials, this way I can do that 'officially'. :)
  20. carbonboy
    *** WARNING - BLATANT PLUG *** (So...three guesses where I work...) Have made it through the week of daily-duties with no major drama. Except for an annoying squealing noise around idle, like an E-series Falcon belt-squeal. Thought it was my drivebelt, removed drivebelt, ran engine, still there. Tried using a piece of tube & my ear to pinpoint the source, couldn't find it. Then I removed the breather hose from the cam-cover. The noise stopped. My thoughts are that it's air being sucked in somewhere as that breather hose is connected to my intake manifold & under vacuum. I don't want to just open it up to atmosphere as that is also tied into my MAP sensor. Also my brake booster now that I think about it.... :hmm: Going to use the weekend to suss this out.
  21. carbonboy
    Yep, don't care. CBF building this engine a third time. :P Slight correction, won't be at the practice day as I'm headed to Picnic at Hanging Rock this Sunday. VMC Round 1 will be my officiate if not competing event.
  22. carbonboy
    +1 for if the standard hardware isn't working properly, a hydraulic handbrake isn't going to help. I think R is saying that practice is the best way to improve. I'd be there myself, but the last practice day I went to my engine died shortly after, so forgive me for being a little hesitant. If I'm not competing, I'll be officiating. :)
  23. carbonboy
    I found that a fuel return line helped a lot with maintaining a steady fuel pressure in my setup, despite having a low pressure pump. A FPR is also your friend, as these carbs generally don't like more than 2psi. Edit: Aren't the red circles in your photo the fuel bowl vent lines, so the bowls don't pressurise? If fuel's coming out of those, dare say the pressure's too high.
  24. carbonboy
    I may have accidentally broken traction..... Without being on a dyno yet & just going by the seat of the pants, mid-range torque is awesome. I'm being nice to the bearings & staying away from the top-end for a while, but all feels good. Especially after I pulled 5° of timing advance out of the ignition curve, did the carb-synch over again & reset the idle speed.
  25. carbonboy
    It runs, it idles, carb-synch is good, air/fuels are good, timing is good & there are no leaks. Oil pressure's good, fuel pressure's good, my hearts BPM, not so much. Oh how I've missed this sound. Wanting to load the engine, my current passengers are an engine block, two gearboxes, a set of wheels/tyres & my toolbox. Haven't seen any smoke from anywhere yet, hopefully I'm getting it right this time. :)
×
×
  • Create New...