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El Gringo

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About El Gringo

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    Ball Peen Hammer

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    Stratford on Avon, UK

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  1. El Gringo

    Dyna Coils Wiring... Why?

    On the 2nd picture, could be a link across to feed the +12 to each coil, rather than having 2 separate wires?
  2. El Gringo

    Turbo plumbing for a simpleton

    That's interesting, stripped the fpr, no crap in it and the diaphragm is fine, then replaced the clipped spring with a new full spring. Reassembled and put back on the bike, fired the pump up, that's odd, it's not showing any pressure? I was under the impression that the Malpassi's were 5-6psi standard, so i wound the adjuster in and it took a good 3-4 turns to get it to just under 3psi on the gauge - not running at present. Possibly more importantly, when I turned the pump off, the pressure remained on the gauge, which it didn't seem to do before. I wonder if where i drilled out the return barb to increase the return flow/ reduce the return restriction is what has caused the base pressure to drop below the 5-6 stock psi? In any case, i'll get it fired up asap and reset the pressure when it's running
  3. El Gringo

    Turbo plumbing for a simpleton

    I'll have a look and see when I can get out on it next. Going to strip the FPR later and got another idea to try too If the next run is relatively successful it might be worth considering another trip to the dyno
  4. El Gringo

    Turbo plumbing for a simpleton

    I might try and move the fuel pressure gauge to somewhere up the front then mount the go pro on the tank so i can watch the pressure and boost afterwards
  5. El Gringo

    Turbo plumbing for a simpleton

    Getting there slowly, completely forgot to take the Go Pro to film it! Mind you it would have been fairly anti-climactic if i'm honest
  6. El Gringo

    Turbo plumbing for a simpleton

    Good Lord! An Update! Progress, small but progress non the less. Finally managed to find a suitable testing spot, so armed with a 12mm spanner and small screwdriver we gave it a go I think it's still transition/fuel pressure related - the fuel pressure before definitely wasn't high enough so we wound it up to just under 3 psi with it running. It's made it very rich at the bottom end but i guessed this would be the case Gave it a run, second gear, and whilst it still stumbled at mid throttle crucially it eventually pulled through it and virtually revved out, and consequently scared the shit out of me. So surprised was it that it had kind of worked i almost forgot to brake before hitting the main road! (which was also not very good having not bedded the new pads in) I also forgot to look at the boost gauge to see what it was doing Few more runs, same result but getting worse for stumbling each time, interestingly it could be cleared by slipping the clutch through it However, the fuel gauge was now showing no pressure despite not being touched, so i wound it up a bit further and the pressure came back, then went again. I'm wondering if where i clipped the spring it's shifting inside the regulator causing it to fluctuate? Next step is to have the regulator back off and put the new spring in and see how low the pressure will go
  7. El Gringo

    Turbo plumbing for a simpleton

    Erm........ not yet, i was away racing over the weekend so didn't get chance to test it It's all back in one piece now though so that's a start I had a look at the breather system, i tried to separate the carbs to measure up for the plugs but they were stuck on one of the long bolts, so rather than break something i put them back together again. 1&2 and 3&4 are already cross linked by the vents so my blanking caps have the same effect as the plugs would. So I think they can stay as they are for now.
  8. El Gringo

    Turbo plumbing for a simpleton

    That's what i figured, Ta
  9. El Gringo

    Turbo plumbing for a simpleton

    One thing that has just occurred to me, would the bore of the pressure reference hose to the FPR affect how it operates?
  10. El Gringo

    Turbo plumbing for a simpleton

    That's kind of why i started the thread, there's a lot of info available on the subject, some of it more helpful and relevant than other bits, and as seen in the post through the thread there's more than one way to skin a cat. I had a vague idea of where to start with it but it's been (il)logical trial and error really This has certainly been a journey and it's not over yet, but if it helps other people looking to go through the process over come some of the pitfalls that's great. It's also testament to how awesome OSS is with the level of replies and advice received
  11. El Gringo

    Turbo plumbing for a simpleton

    I think the next course of action will be...... Remove the plugs I put in the drilled holes Get some link bits turned up to go between the breather ports Re-test with 2.5-3 psi base fuel pressure, opened out pitot and boost controller removed If that doesn't illicit the correct response then i'll look at moving the FPR pressure feed somewhere else and add another pitot and run one to each pair of carb bowls
  12. El Gringo

    Turbo plumbing for a simpleton

    I'll try and remember to take a picture of my pitot later but it basically looks the same as above. It's mounted in the straight section of the ally tube before the bend where it goes to the plenum - the BOV is just infront of this bit in the silicone tee
  13. El Gringo

    Turbo plumbing for a simpleton

    I am known to do stupid things! That might have been the bit where i compared the size of the hole i drilled to under the diaphragms to the 2 slide holes - originally the drilled hole was a smaller area than the 2 slide holes combined - hence why i made it bigger
  14. El Gringo

    Turbo plumbing for a simpleton

    You Sir are a legend! - i also followed the instructions on the old site/in the vault Right i can answer most of this now Right then, i drilled a hole in each carb to get boost under the diaphragm. Yep done that, 5.5mm hole straight down into the inlet I did NOT modify the slides at all. This concerns me that you have. I haven't touched the slides, they're all stock Boost referenced the fuel bowls (overflow) of each set (1/2 and 3/4) of carbys via its own pitot pipe I've got 1 pitot feeding the 2 float bowl vents via an 8mm hose and tee'd down to the over flow connections Floats at Stock height Yep, stock float heights, holding 3psi when running Sealed the diaphragm breathers all together. I've got the 2 breathers blanking capped - will look to link these with inserts Removed the fuel cock (hehe) and made new one that is free flowing out and a return that goes to the TOP of the tank. This is a must as the fuel return must be free of pressure. I've got quite a long return hose but it's an 8mm bore and returns above fuel level Trade off with the fuel cock (hehe) i made is i don't have a reserve now. STD one is a massive restriction. Fuel delivery block houses the flow at 14mm bore to the pump and the 8mm return If its returning to the bottom of the tank you are fighting the petrol level pressure already in the tank. Nope, above fuel level I sealed the petrol cock (hehe) feed pipe thingy on the carb rubber. I'm using that for the FPR boost feed I used ALL 4 ports in the carby tops to get vacuum for the blow off valve. Yep, got all 4 linked that feeds the BOV and a line tee'd off that feeds the boost gauge I didn't cut the spring in the fuel Reg... bad idea in my opinion as it changes the spring rate to make it harder, i made a spacer for the reg that let me lower the std setting. Might look at getting a new spring so i don't have to wind it up as far Fuel Reg has it's own Pitot pipe. As above, from the manifold take off Wastegate controller has a reference off the plenum Currently got a line from the turbo outlet to the wastegate via a boost controller - this is currently backed right off - i might take it off to rule it out I machined the ignition plate so i could get up to 5 degrees retard Ignition is currently stock but i do have a modified pick up that allows 3 degrees retard to be fitted when it starts working properly When tuning, i had 1 AFR in the pipe and 4 EGT's, 1 in each exhaust port on the headers. I got the exhaust temps within 20 Degree C and the AFR happy Nothing fitted at present, AFR on the Dyno was pretty good until it hit the bit it wouldn't pull through each carb has different Main Jets and different needle heights Will Faff with this bit later Boost and Fuel Pressure hooked up too and made sure i had 2.5 to 3 PSI more fuel pressure at all times. I think part of the issue might be the base pressure was too low in the first place, will re test, holds a steady 3psi when running now but haven't tried it since this I'm pretty much bang on the same as what you did so i'm a bit puzzled as to why it's not working, Thanks for your help, will give it another go and report back
  15. El Gringo

    Turbo plumbing for a simpleton

    Cheers Chap, Much Appreciated
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