so where is the video for the FT anybody ?
How to time your 1HZ/1HD-T Fuel Pump Video
- Thread starter ForealBoreal
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so denco diesel also lists this pdf for timing specs. located here https://www.dencodiesel.com/Timing-a-VE-Style-Fuel-Pump.pdf they list a specific specification for 1hd-t pump with the acsd and 8mm spacer.
"Toyota 1HDTFactory Turbo 1.29-1.35mm ACSD with 8mm spacer@ TDC "
what are the specifications if you have removed this acsd device?
I have also found this denso service builten for our injection pumps I hope this info I share comes in handy too.
http://dieselmastera.ru/_fr/5/VE_ETVZ9703-PRE.pdf
"Toyota 1HDTFactory Turbo 1.29-1.35mm ACSD with 8mm spacer@ TDC "
what are the specifications if you have removed this acsd device?
I have also found this denso service builten for our injection pumps I hope this info I share comes in handy too.
http://dieselmastera.ru/_fr/5/VE_ETVZ9703-PRE.pdf
So the removal of ACSD effects the timing spec and compensation is needed ?
Just bought the Mitutoyo 2046S and the SST 09275-54011, since the ACSD is removed on my 1HDT, need to adjust timing.
Any feedback or pointers?
Any feedback or pointers?
Bumping this thread!!! Does anyone know the Specifications if you removed the ACSD on a 1HD-T? or Verify my Findings please!!!
This is taken from the FSM
I am assuming the Plunger stroke for early 1991 1HD-T 1.18-1.24 mm is correct as it does not list a 1HD-T with ACSD in the FSM?
^^ The above specs was taken from the latest fsm I have 1998 - RM617E
in the older 1990 - RM172E FSM the specs are 1.29-1.35 mm but I think this one is ACSD only same specs from Denco Diesel website too.
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Yay tools came in I went digital.
NEOTECK NTK021
NEOTECK NTK021
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Ooooow, shiny!!
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Be careful, mine times out and shuts off losing all values! I went back to mechanical.
Hi, guys, I'm still confused about what the timing spec should be with the ACSD Removed.
Could someone please verify the Spec for a 1991 HDJ81 1HD-T Pump Timing with the ACSD removed?
I am curious as well, I have the old 1990 FSM for the 1HZ and 1 HDT.
I’m sure someone knows. There are lots of 1HD-T with the acsd removed my self included been running with out retiming and I haven’t noticed any difference. I just want to set it up correctly.
The only thing the ACSD does is increase timing during start up when engine coolant is cold. Once engine is up to temp the hot coolant moves the timing advanced piston back to normal position. If you aren't having any starting issues then it's fine, there's nothing "incorrect" about not timing it after removing ACSD. Some pumps are old and worn and suffer cold start issues once ACSD removed so those bump the static timing up a bit to help.
So if I were to check it anywise should I aim for 0.85-0.91mm???
That's 1HZ specs, don't you have a DT?
Yes I have 1HD-T Ok then 1.18 - 1.24 mm
Or
1.29 - 1.35 mm for 1HD-T not sure why there’s 2 specs.
There's two specs because they changed the design of the DT piston combustion bowls.
ok thanks, I think ill go with 1.29 - 1.35 mm for 1HD-T as I have an early 1991 1hd-t
not sure when they did change the DT piston combustion bowls.
I'm the wrong person to ask about an exact number for the plunger stroke using dial indicator. I don't believe in setting the static timing to a random number. I let the engine decide where it wants to be as the numbers written in the FSM aren't relevant anymore with older, worn and modified engines. For example, setting the timing to say 1.2mm because that's what the book says is silly when the engine performs exactly the same at 1.1mm.