LD32 Engine build | Page 12 | The Z Club of Great Britain
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LD32 Engine build

Discussion in 'Hybrid Z cars' started by jonbills, Apr 5, 2020.

  1. Huw

    Huw
    Z Club Member

    The 280ZX fan clutch and fan is probably the deepest one. That lot takes the fan closer to the rad.
     
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  2. jonbills

    jonbills
    ZClub Administrator
    Moderator

    New rad installed and I'm back to where I was.
    I've also fitted a 280z bonnet from @Minksport to let the heat out. The red colour is almost perfect, but I'll probably repaint it just because :)

    DSC_0009.JPG DSC_0011.JPG
     
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  3. Rob Gaskin

    Rob Gaskin Treasurer Staff Member Moderator

    Hey Jon, with your car many of the things you do make the before pictures look better than the after. ;)
     
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  4. richiep

    richiep
    Z Club Member

    Have you ever seen what happens when those metal blade fans let go?

    Think oversized Ninja throwing star bouncing around the engine bay.

    There’s a reason they switched to the plastic ones other than weight.

    (I once looked at an import early car that had suffered that particular failure. Cracked bonnet and big ass hole in the LH inner wing where the makeshift shuriken had embedded itself.)
     
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  5. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    That’s some rad Jon!!!! Did you spray it black?

    Can’t wait to see some videos of this engine running / rolling road charts once ran in.

    BTW are you running no filter on it? (And I’m not talking about the bonnet either).

    Just couldn’t stop laughing at this!!! Still smiling as I type!
     
  6. Bazzateer

    Bazzateer
    Z Club Member

    Seen loads of those, they're usually behind the wheel though!
     
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  7. jonbills

    jonbills
    ZClub Administrator
    Moderator

    @AliK, I do have a filter, it just wasn't fitted in the photo.
     
    AliK likes this.
  8. jonbills

    jonbills
    ZClub Administrator
    Moderator

    Can't quite tell if I'm being insulted o_OEXTRA:D:conf2:
     
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  9. toopy

    toopy
    Z Club Member

    I think it's commonly known as 'No f*$ks given' as in your car is definitely all about function rather than form (aesthetics), the bonnet replacement as is being a classic example :p:driving:
     
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  10. jonbills

    jonbills
    ZClub Administrator
    Moderator

    After I changed the bonnet, I also decided to change the o2 sensor and the tuning activity got a lot easier - my 02 sensor was reading variably rich, which is a very unpleasant failure mode for an 02 sensor when you're tuning the fuel map with it!
    The map is in pretty good shape now, and it's using 12% more fuel at peak than the 2.9 engine, with only a 9% increase in capacity so something is working.
    fuel.jpg
     
    Last edited: Jul 16, 2021
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  11. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    So JB what sensor did you replace it with? And what was the brand that failed?
     
  12. jonbills

    jonbills
    ZClub Administrator
    Moderator

    Bosch and Bosch, I wouldn't use anything else. the old one was 18m old. normally they fail obviously lean so this was a surprise.
     
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  13. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    That is a surprise indeed - I thought you may have gone cheapo eBay. The Bosch’s are fitted to just about every Audi I know and the only failures I’ve seen have been around the 90k-120k miles point.


    Do you remember that video I once shared of a dude with a blow torch bringing them back to life? Worth a try on the old one? Although I suspect you have bigger fish to fry!
     
  14. jonbills

    jonbills
    ZClub Administrator
    Moderator

    18m seems to be the norm for this setup, which is OK. For the sake of £55 quid, I'm happy to just bin the old one.
     
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  15. jonbills

    jonbills
    ZClub Administrator
    Moderator

    Guilty secret time - I mentioned there were 'modifications' to the exhaust and mounting to accomodate the taller engine. One of those modifications was to flatten the Y pipe where it goes under the gearbox mount :banghead:. I've recently developed bodgers remorse over this, wondering if it was restricting flow.

    Happily @SeanDezart was able to supply a replacement part and latest runs are using a bit more fuel at 6k rpm plus, so, maybe. At least I'm not wondering any more.
    this engine doesn't seem as keen to rev as the old one. 7500 might be as far as I go you'll be pleased to hear @Rob Gaskin. ;)
     
  16. franky

    franky Well-Known Forum User

    when's it on the Dyno? that'll tell you when to stop revving it.
     
  17. Bazzateer

    Bazzateer
    Z Club Member

    I have no idea about fluid dynamics (or whatever it's called) but if a circular cross section tube is squashed into an oblong would it still flow the same? The cross section won't have changed, just the shape.
     
  18. jonbills

    jonbills
    ZClub Administrator
    Moderator

    yes, time to book it. I think it'll be Page Motorsport this time. I think you'll have finished your car before Northampton Motorsport have a slot for me.
     
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  19. franky

    franky Well-Known Forum User

    Thats a claim!!
     
  20. jonbills

    jonbills
    ZClub Administrator
    Moderator

    thats what I told myself at the time :)
    But actually it didn't get wider at the sides, it just got flatter on top.
     
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