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Certainly something to look into. It would be interesting to know what the leverage is on the injector to see what sort of forces are between the injector and sheet and how much deformation is needed to effect a seal. If the BDG sheets are brass or at least a copper alloy and the factory are pure copper then there will be a significant difference in hardness and malleability.
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My 150 build - http://www.pradopoint.com/showthread.php?27423-A-Random-approach-to-a-Bluestorm-150-GXL-D4D-automatic -
Hey,Originally posted by mjrandom View Post
I don't know what temperatures the seats are getting to, so I don't know if this is possible or not, but I used to do up Bridgeman type seals in high pressure vessels with copper/aluminium/copper. The vessels were used up to 2000bar at 300C.
The aluminium did all the sealing by flowing in between the copper.
Thickness for a multiple material seal might also be an issue?
Seems like a very challenging materials problem to get working properly!
Best
Mark2006 GXL petrol auto. ARB deluxe bar x3 HID IPF's, ARB alloy roofrack, ARB awning, BFG A/T, Safari snorkel, Piranha breathers, Pacemaker extractors, custom Ironman 45710FE 436-569mm with Dobinsons 350, custom Ironman 45682FE 383-618mm with Dobinsons 487, Firestone kevlar 60psi airbags, 30mm extended Roadsafe links, AMTS bashplate and recovery points, ABR Flyer with Powersonic AGM.Comment
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Unless you've got aftermarket bash plates or the like, you can see the oil pick up screen with any torch/light. No camera necessary. Just need to let the oil stop draining, even dripping.
I was in Anths workshop today and saw the suspect seats.120 D4D with nothing on it......yet.Comment
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Just a thought, that when requesting a Dealer/Workshop to take a photograph of the oil pickup when changing the oil, it might be an idea to request that the date be written on the sump near the plug hole (with a paint pen or similar) and be incorporated in the photo, to verify that the photo was taken on that day, otherwise the same photograph could be reused multiple times for multiple clients.
Also I'd like to thank #### for all the work and information he has provided to us over the last couple of years, many thanks mate!!!Comment
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you can see from the witness mark no 1 only had seal on 50% of the circumference, no. 3 looks like the seal was offset. others look like contact is good. If the seal is too hard it wont deform to seal up between the two flanges, one on the head and one on the injector.
How is the injector retained, is it possible for it to be clamped in not square or unevenly?
Id say the hardness of the seal needs to be balanced, too hard and it wont seal initially, too soft and it will loose its seal in service.Comment
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Perhaps ask them to write on the invoice that it has been inspected & clear etc.Originally posted by Nebulous View Post
Maybe print out the sump plug hole pics on here so you guys can take them & demonstrate what they should be looking for.
It's getting a bit ridiculous, teaching them how to, just tell the to join pp
lol.....
Next thing I might need to become a teacher, d4d day corse lol.......
Cheers mate, happy to help the crew out!Comment
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Has anyone tried dumping the seals in exchange for some high temp silicone........
Gotcha.Dave
Views expressed are mine alone and are not intended to compromise the integrity of my employer nor offend those who may read such views.
Bugger Bali, get out and see Australia before we sell it all to China.Comment
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Injectors would go in to deep and wrong spray patten , ????Originally posted by Bushbasher View Post
What a day in Perth today.
Enjoy yours
Alan.Comment
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Anthony
What was your final diagnosis?Terry
Canberra
2008 Prado 120 D4D and 2010 Jayco Swan OutbackComment
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Seats not to spec.Originally posted by OldGreyFart View Post
Plain copper wasn't withstanding the heat from these engines, but the material needs to be copper to squash & flex to make the seal. It also needs to last, which is why they are coated, now & since 2008.
The seats I was supplied with the injectors were used. It turns out they are Brass. Brass is much harder & is not always able to affect the seal. You can get lucky many times over.
Number 1, was leaking from the moment it went in.
Oil & filter changed, sump removed & pickup cleaned.
Injectors removed & cleaned, ports cleaned, diagnosis complete. Stick With TOYOTA genuine coated sheets/seats.
Customer offered to pay the bill, but no payment was accepted, it is not at all his fault this happened.
There is no reason Why he should bear a cost. It's unfortunate he had to return the vehicle for these reasons.
Lucky he noticed the smoke & acted on it, or it may have ended up in tears, like yours.
Naturally, as I have been able to quantify the cause, the associated costs are forwarded to the supplier.
Again lucky only for rectification of the problem, & not a whole engine if it was left alone.
So you never know when & why you might have blow by at injectors, old copper seats, Hard brass seats, poor workmanship, etc. So just look at the oil pickup, make sure your service centre does, at the regular oil changes.
Cheers,
####.Comment
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Can Genuine new seats be purchased from Toyota? I am about to do my Injectors when they get here i ordered BDC Injectors and new lines as one is Specing at -3
Also doing timing belt/waterpump at the same time
Bit worried about the seals now. Also wondering where i can get the caps to put on the rail and injectors etc?
Also wondering if there was any cleaning solvent used on the seats when you cleaned them, also what about debris droping into the cylinder as you clean? will this burn off and disappear?Comment
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Yes.Originally posted by Jamo82 View Post
I use caps from injectors. Got plenty spares.
Throttle body cleaner sprayed on a rag around a dowel.
Nothing falls in if you do it right. Cleaning is the easy part, it's the rest of the job where things can go wrong.Last edited by Anth120playdo; 24-03-2017, 08:33 PM.Comment
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Don't let thugs do your mechanical work (LOL).Originally posted by Anth120playdo View PostDave
Views expressed are mine alone and are not intended to compromise the integrity of my employer nor offend those who may read such views.
Bugger Bali, get out and see Australia before we sell it all to China.Comment
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Whitey
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