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jonbill

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About jonbill

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  1. the injector should be closed unless it is triggered. You've got 5 that aren't spraying fuel with the engine off, and one that is right? I think you've got one stuck injector.
  2. Why does the line from the pump inlet to the turbo have water flowing in both directions?
  3. The site specific search I think actually requires no space before "hybridz.org" Site:hybridz.org search terms. With the space I think it treats hybridz.org as just another search term. (so it will more often find results on hybridz.org, but not exclusively)
  4. Thanks. There's no discolouration, just missing material, so assume not overheated. Oil holes are definitely clear. Could be thin hardened depth, I'm ignorant of any treatment applied to cams TBH.
  5. Thanks, they've certainly worked fine for 3 years with lots of revs, so no real reason to suspect them other than search not showing anyone here using the 68025 springs.
  6. Thanks, yes, they were new Nissan ones. They don't have any damage. It has a high volume pump. Thanks for info on spray bar and lucas zddp.
  7. Hi, I've been running a. 585 lift 307/8 duration cam for 3 years now (8 or 9k miles). A couple of the lobes have just started to lose material from near the tips. And I'm looking for how to avoid when I fit a replacement copy of the cam. The cam is reground from an oiled 1981 f54 l28. I have Schneider 68025 springs with a seat pressure = 125 lb ( I think) Are the seat pressures too much? I could swap for 68022 springs at 110lb. Should I use a spray bar too? Was I just unlucky or used the wrong zddp additive this year? Thanks for any pointers. Jon
  8. Are you trying to install with two circlips per side?
  9. So you turned the whole engine by turning the cam, and the wrong way? Which is to say you turned the crank by pulling on the tight side of the chain? That won't be a problem for the oil pump. Don't think that'll be a problem at all.
  10. Why should you turn the cam at all to take the head off? Once the head is off you can turn the cam if you want. You just have to make sure it's back in the right position when you put it back on.
  11. jonbill

    Speeduino

    Great stuff, what was the problem?
  12. jonbill

    Speeduino

    I'll post my tune when I get home tomorrow. Do you have a similar setup to me? Looks like you've got 36-1 trigger wheel. Here's a thread I have on the speeduino forum while I was trying to get it to work that might have some useful info. https://speeduino.com/forum/viewtopic.php?f=19&t=2537
  13. I suspect Quaife will advise you to install the circlips before installing the diff in the carrier. You might be better off biting the bullet and taking it out again. As long as you don't mix up the shims under the bearing cups you can't mess up the setup, so nothing to worry about.
  14. It rather depends what you'll do with it. I'd recommend getting this book or one of the others like it. How to Build and Power Tune Weber and Dellorto DCOE and DHLA Carburettors (Speedpro Series) https://www.amazon.co.uk/dp/1903706750/ref=cm_sw_r_cp_apa_i_Ah7PCb8WCD7AH They'll help you pick the parts you want for your use case. First thing I'd do with them is swap them for 45s.
  15. There was a time when the Quaife diffs didn't come with the circlips pre installed and you (or your installer) had to install them before installing the diff into the case. I've read people's troubles installing them after the diff is in the case. The circlips needs to be compressed and pushed square into the driveshaft hole until it expands into its groove. Sounds like yours just wasn't ever installed.
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