They do rock around a lot at the normal idle speed of 650-700rpm, I bumped mine up to maybe 800rpm which smooths it out a lot. Above 1000rpm they're very smooth and sweet for a large 4cyl diesel.
I would definitely check the injection timing.
isuzu 4BD1T swap?! (1 Viewer)
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They do rock around a lot at the normal idle speed of 650-700rpm, I bumped mine up to maybe 800rpm which smooths it out a lot. Above 1000rpm they're very smooth and sweet for a large 4cyl diesel.
I would definitely check the injection timing.
you wouldnt think a little timing would be much but it sure does. when i got mine together it had a vibe at hiway cruise,,, just a little harmonic type deal. i thought about it and read a bunch on the injection system and decided to check the IP timing. it was only off 1 degree. i re-set it and i swear its as smooth as a 2F now.
you'll get it figured out,,, at least its running and driving, how big a smile do you have behind the wheel? i still have one.
you'll get it figured out,,, at least its running and driving, how big a smile do you have behind the wheel? i still have one.
4bd2tc into cj7 w/NV4500/dana300
Well, it looks like I have finally got everything into one pile now, I have gotten most of the parts, and we just finished measuring everything up. I hope to have everything machined and ready to bolt together in the next few weeks.
I have found a way to get around the dual flywheel problem, by using an NV4500 tranny from a Dodge truck, an adapter from JB conversions to adapt the nv 4500 to my Dana 300, and now with a bit of machining I am making a plate to bolt the isuzu 5speed bellhousing to the front of the NV4500. With a replacement for the isuzu pilot bearing ( to match the NV) I think I have a WINNER
!!!
I will have to do a bit of machine work on the Isuzu bellhousing to make clearance for the bearing retainer on the NV, but that will not be too big of a deal.
Is anyone else interested in trying this, after I get it all programmed up. I wander if anyone else would want one?
Dieseltim
Well, it looks like I have finally got everything into one pile now, I have gotten most of the parts, and we just finished measuring everything up. I hope to have everything machined and ready to bolt together in the next few weeks.
I have found a way to get around the dual flywheel problem, by using an NV4500 tranny from a Dodge truck, an adapter from JB conversions to adapt the nv 4500 to my Dana 300, and now with a bit of machining I am making a plate to bolt the isuzu 5speed bellhousing to the front of the NV4500. With a replacement for the isuzu pilot bearing ( to match the NV) I think I have a WINNER
!!!I will have to do a bit of machine work on the Isuzu bellhousing to make clearance for the bearing retainer on the NV, but that will not be too big of a deal.
Is anyone else interested in trying this, after I get it all programmed up. I wander if anyone else would want one?
Dieseltim
Well the engine is finally sitting on my garage floor, it only took me 3 months of trips back and forth to Southern Cal but it's finally done! Now I just need to figure out which tranny to use, 4L60 or 700r4. I was looking through the thread but couldn't find the comments regarding rpm's. Am I remembering correctly the agreed upon rpm the engine likes is around 2100 rpm? My next project is to figure out the best tire/3rd member combination. What am I doing wrong with this formula. ?
mph x final drive ratio x O.D ratio (no O.D is 1) / tire dia x 336 = rpm at the mph.
70 mph x 2.87 (final drive ratio of a 4L60) x .7 (O.D ratio for a 4L60) / 33 (planned tire size) x 336 = 1431 rpm. This is way too low I think. I got the numbers from a tranny specialty site and these numbers apply to a 4.11 gear.
mph x final drive ratio x O.D ratio (no O.D is 1) / tire dia x 336 = rpm at the mph.
70 mph x 2.87 (final drive ratio of a 4L60) x .7 (O.D ratio for a 4L60) / 33 (planned tire size) x 336 = 1431 rpm. This is way too low I think. I got the numbers from a tranny specialty site and these numbers apply to a 4.11 gear.
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isuzu to 4l60
great you have an engine, what kind did you end up with? have you rebuilt it or planning to just drop it in?
the 4L60 I understand to be a stronger Trans, and has an option to get a K case from trucks.
the equation you have there looks wrong, you do not need a final drive ratio and a OD ratio. here is another site, with all the gory details.
Speed versus RPM calculator
at 70 mph, with 4:11 gears, and .7 OD, and 33 inch tires, the engine will run about 2050 rpms. The optimum is around 1800 rpms (about 62 mph).
I recently got my tachometer installed autometer #2888 but do not have it calibrated, and I also have the 33 inch tires! but I am not putting them on, until I tweak the IP timing.
great you have an engine, what kind did you end up with? have you rebuilt it or planning to just drop it in?
the 4L60 I understand to be a stronger Trans, and has an option to get a K case from trucks.
the equation you have there looks wrong, you do not need a final drive ratio and a OD ratio. here is another site, with all the gory details.
Speed versus RPM calculator
at 70 mph, with 4:11 gears, and .7 OD, and 33 inch tires, the engine will run about 2050 rpms. The optimum is around 1800 rpms (about 62 mph).
I recently got my tachometer installed autometer #2888 but do not have it calibrated, and I also have the 33 inch tires! but I am not putting them on, until I tweak the IP timing.
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4bd1t Injection Pump timing
Oh the smile is there alright! I have now like 100 miles on it, but still I would like to tweak it. It is a lot like ocean sailing it seems, it is easy to get to 80% power, but the last 20% of the power takes a lot of refinement.
I would be curious how you checked your IP timing? I used the description in the manual, but was not able to get a consistent reading? Removed the #1 line, removed the valve holder, replaced without the spring or valve, rotate the crank, and then check when I saw fuel rise up in the #1 valve holder? should rise at -13TDC.
I also then pumped the Lift pump at -13 , -15, -17 and on, and would get fuel to come out of the #1 valve holder. Per the manual the fuel should come out at -13, but not come out at -14 TDC?
My concern with the IP pump that the fuel goes back down, I would think it would have a check valve somewhere. Unfortunately they do not let a whole lot of secrets out on the IP pump mechanics...
Oh the smile is there alright! I have now like 100 miles on it, but still I would like to tweak it. It is a lot like ocean sailing it seems, it is easy to get to 80% power, but the last 20% of the power takes a lot of refinement.
I would be curious how you checked your IP timing? I used the description in the manual, but was not able to get a consistent reading? Removed the #1 line, removed the valve holder, replaced without the spring or valve, rotate the crank, and then check when I saw fuel rise up in the #1 valve holder? should rise at -13TDC.
I also then pumped the Lift pump at -13 , -15, -17 and on, and would get fuel to come out of the #1 valve holder. Per the manual the fuel should come out at -13, but not come out at -14 TDC?
My concern with the IP pump that the fuel goes back down, I would think it would have a check valve somewhere. Unfortunately they do not let a whole lot of secrets out on the IP pump mechanics...
1995 4BD2T with 4L60
It's a 4BD2T. There's a long story that goes with the engine which I'll put in my thread at some point. The short version is I bought a 1995 16' box truck with the engine in pieces, which it didn't have all of them (missing over $1000 worth). It dropped a piston 4 years ago, machine work was done then never put back together. Over the years, lots of parts got lost as it got moved around. I still need some bolts which I'll have to order from Isuzu.
Along with the transmission (4L60), I need to figure out the rest of the plumbing. I remember reading somebody had a pdf of the FSM but couldn't find the thread. Was I dreaming?
88tlc - I also sent you a PM. I re-read your posts and looked at the photos. Great info that will save me a lot time.
It's a 4BD2T. There's a long story that goes with the engine which I'll put in my thread at some point. The short version is I bought a 1995 16' box truck with the engine in pieces, which it didn't have all of them (missing over $1000 worth). It dropped a piston 4 years ago, machine work was done then never put back together. Over the years, lots of parts got lost as it got moved around. I still need some bolts which I'll have to order from Isuzu.
Along with the transmission (4L60), I need to figure out the rest of the plumbing. I remember reading somebody had a pdf of the FSM but couldn't find the thread. Was I dreaming?
88tlc - I also sent you a PM. I re-read your posts and looked at the photos. Great info that will save me a lot time.
That sounds familiar about missing parts and figuring out where they go. I bought a military 6.2 for my swap and it was missing all the accessories and brackets. I bought all new accessories and had a salvage yard send me all the brackets. It was like a jigsaw puzzle! The problem was that the 6.2 was used in so many cars and for so many years it was hard to find pictures of the exact set-up I had. That may be the same problem you encounter. Finally after several days of web searching and head scratching I got them all on. I will say this from my experience, trial fit your engine with all accessories on (mine fit but I had to move the battery position) install the fan w/clutch (if using one) radiator and fan shroud. I should have placed my engine about an inch further back for the fan to clear the radiator. As it sits I am using a flex fan without the clutch (probably a better set-up anyway) and I am having to modify the shroud (the engine sits about 3" more towards the drivers side) All of these would have been much easier before the engine was installed! Keep us posted, the Isuzu was my first choice for my conversion, in fact I thought I bought one but after a couple months I finally realized the guy wasn't going to go through with it, that is when the 6.2 sort of fell into my lap. I would still like to do an Isuzu conversion though.
Good luck
Rusty
Good luck
Rusty
It's a 4BD2T. There's a long story that goes with the engine which I'll put in my thread at some point. The short version is I bought a 1995 16' box truck with the engine in pieces, which it didn't have all of them (missing over $1000 worth). It dropped a piston 4 years ago, machine work was done then never put back together. Over the years, lots of parts got lost as it got moved around. I still need some bolts which I'll have to order from Isuzu.
Along with the transmission (4L60), I need to figure out the rest of the plumbing. I remember reading somebody had a pdf of the FSM but couldn't find the thread. Was I dreaming?
88tlc - I also sent you a PM. I re-read your posts and looked at the photos. Great info that will save me a lot time.
The FSM for the 4BD1T is posted on MattF's site at Master Portal - forums.bauchan.org/Isuzu Manuals Most of the information applies to the 4BD2T as they share the same bottom end (except pistons).
MattF has also posted FSMs for the Isuzu 2000-2003 trucks that cover the 4HE1 and 6HK1 diesel engines.
Perfect -Thanks a bunch. Now I just need to find the right time of day won't the server isn't overloaded!
cool andrew, one step closer.
88tlc,, i got to talking with a mechanic guy i know,,, he's mostly a big truck guy but does the isuzu fleet for a large landscape company here so i like to pick his brain. he "let me borrow"
a timing thing that plugs into the #1 IP line on the bottom of the pump, it also has a deal that attaches to it and can read RPM.
, one step closer.88tlc,, i got to talking with a mechanic guy i know,,, he's mostly a big truck guy but does the isuzu fleet for a large landscape company here so i like to pick his brain. he "let me borrow"
a timing thing that plugs into the #1 IP line on the bottom of the pump, it also has a deal that attaches to it and can read RPM.NV4500 to 4bd2tc
I have finally gotten everything bolted together to see how it is all going to fit, and it looks GREAT. I have the anwser for those of you that would like to put a 4bd into most anything now without the having to use two flywheels. I am using the bellhousing from the isuzu 5speed and an NV4500 from a Dodge truck ( has a longer input shaft). Used the isuzu pressure plate and the dodge clutch disk, changed the pilot bearing and bolted in an adapter plate between the bellhousing and the NV4500. For those who said it can't be done I have the pics to prove it. For anyone else that would like to do an NV4500 adapter. I will be taking orders Now
. Kits will be ready in the next few weeks, as soon as we can get the CNC programmed to make them.
In the first pic below you can see that the dodge throwout bearing will fit onto the isuzu clutch arm and that it looks stock.
The second pic is of the whole assy bolted together.
Dieseltim
I have finally gotten everything bolted together to see how it is all going to fit, and it looks GREAT
. I have the anwser for those of you that would like to put a 4bd into most anything now without the having to use two flywheels. I am using the bellhousing from the isuzu 5speed and an NV4500 from a Dodge truck ( has a longer input shaft). Used the isuzu pressure plate and the dodge clutch disk, changed the pilot bearing and bolted in an adapter plate between the bellhousing and the NV4500. For those who said it can't be done I have the pics to prove it. For anyone else that would like to do an NV4500 adapter. I will be taking orders Now. Kits will be ready in the next few weeks, as soon as we can get the CNC programmed to make them.In the first pic below you can see that the dodge throwout bearing will fit onto the isuzu clutch arm and that it looks stock.
The second pic is of the whole assy bolted together.
Dieseltim
I am using the bellhousing from the isuzu 5speed and an NV4500 from a Dodge truck ( has a longer input shaft). Used the isuzu pressure plate and the dodge clutch disk, changed the pilot bearing and bolted in an adapter plate between the bellhousing and the NV4500
You my friend are a genius.
Congrats on both getting it done and making it stupidly easy for those who follow you.
Looks great! I am definitely interested. The NV4500 is a great transmission and there are adapters available to the LC t-case.
Let me know how much for the kit and what you plan to include.
How thick is your adapter and how do you insure proper alignment?
NV4500 adapter
astr,
The first pics show that the throwout bearing tube has been bored out to the size of the bearing retainer for the NV4500, and the next pics shows that installed into the isuzu bellhousing. For the this proto-type we choose to make the plate 3/8" so that the input shaft would be long enough to reach into the pilot bushing. Using the 3/8" plate meant that we also had to relieve the backside of the bellhousing to allow for the NV4500 bearing retainer and the bolts that hold it onto the front of the tranny, to fit into the back of the bellhousing. Now that we have it all together it looks like 1/2" plate will work ok for the shaft length, so that will save the machine work to relieve the backside of the isuzu bellhousing, but the hole will still have to be bored thru where the throwout bearing rides, As this is the only place to get everything lined up.
As for what we are planning to include in the kit.
The adapter plate cost will be determained after we get everything programmed for CNC.
The clutch disk
pilot bearing
Throwout bearing
All the bolts & nuts
You will need to have a bellhousing to send to us for the machine work or have it done locally if you can find someone you trust to work to the 1000th of an inch.
Dieseltim
astr,
The first pics show that the throwout bearing tube has been bored out to the size of the bearing retainer for the NV4500, and the next pics shows that installed into the isuzu bellhousing. For the this proto-type we choose to make the plate 3/8" so that the input shaft would be long enough to reach into the pilot bushing. Using the 3/8" plate meant that we also had to relieve the backside of the bellhousing to allow for the NV4500 bearing retainer and the bolts that hold it onto the front of the tranny, to fit into the back of the bellhousing. Now that we have it all together it looks like 1/2" plate will work ok for the shaft length, so that will save the machine work to relieve the backside of the isuzu bellhousing, but the hole will still have to be bored thru where the throwout bearing rides, As this is the only place to get everything lined up.
As for what we are planning to include in the kit.
The adapter plate cost will be determained after we get everything programmed for CNC.
The clutch disk
pilot bearing
Throwout bearing
All the bolts & nuts
You will need to have a bellhousing to send to us for the machine work or have it done locally if you can find someone you trust to work to the 1000th of an inch.
Dieseltim
other pics
I have some other pics on another forum, check out
Build-up: Jeep YJ w/ Isuzu diesel - Page 3 - Pirate4x4.Com Bulletin Board
Dieseltim
I have some other pics on another forum, check out
Build-up: Jeep YJ w/ Isuzu diesel - Page 3 - Pirate4x4.Com Bulletin Board
Dieseltim
THis is brilliant!! I have a Dodge nv4500 in my cruiser!! I will be very interested in a kit!
kits avaible soon
It looks like it will be 4-6 weeks before we can get this programmed for the CNC to start making them on a production basis. In the mean time, if you want to start a list of first come first serve. E-mail or PM me. I will NOT be taking any Money until they are ready to be shipped. So, while you wait for us to get production rolling, find yourself a flywheel and bellhousing from the isuzu 5speed, and an NV4500 from a dodge truck. Maybe by the time you have all of that together we will have the kit ready.
Dieseltim
It looks like it will be 4-6 weeks before we can get this programmed for the CNC to start making them on a production basis. In the mean time, if you want to start a list of first come first serve. E-mail or PM me. I will NOT be taking any Money until they are ready to be shipped. So, while you wait for us to get production rolling, find yourself a flywheel and bellhousing from the isuzu 5speed, and an NV4500 from a dodge truck. Maybe by the time you have all of that together we will have the kit ready.
Dieseltim
I have some other pics on another forum, check out
Build-up: Jeep YJ w/ Isuzu diesel - Page 3 - Pirate4x4.Com Bulletin Board
Dieseltim
If it's okay with you, I'd like to add this info to the Isuzu 4BD1/4BD2 section on www.4btswaps.com
