Isuzu 6VD1 block swap

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Isuzu 6VD1 block swap

Postby abdocis » Sat Jan 07, 2017 4:40 pm

Greetings,

I have an oil pressure issue on my Honda Passport 2000 engine. My mechanic told me it is the villebrquin that is worn out. We have found a used engine with the block reference 6VD1.

I would therefore only use the block of this used engine. The block of my Honda Passport engine has the same reference (6VD1).

My problem is that I do not know the year of the used engine. The references that appear on the used block are: 6VD1 (left side) and 438730 (right side).

I read on the forum that the blocks between 98-2002 are identical. My engine is the year 2000.

Is the year really important if I only use the block?
How do I know the year of the used engine with the references I provided to you?

Thank you in advance for your help
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Re: Isuzu 6VD1

Postby Espltd78 » Sat Jan 07, 2017 5:20 pm

Someone else may chime in here but, as far as I know if it is a 6vd1 block you need it shouldn't matter the year, they are the same. Is the donor engine a dohc or sohc ?? If its dual the you could just drop the whole engine in. Btw what exactly is a worn villebrquin ?

Edit... Sorry meant it shouldn't matter the year from 98 and up, the 92-97 are different deck height, they might be made to work together but i couldn't confirm that one.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Sat Jan 07, 2017 5:50 pm

Thank you Espltd!

I don't know if the used engine is DOHC or SOHC. How can I check this?
Sorry for the word mistake. I mean crankshaft engine (instead vilebrequin). The mechanic explained that crankshat bearing and engine is worn out.

I saw some differences:
- there is a sensor at the top of the used block (my block don't have it;
- the compressor is located at the right side (my compressor is located at the left side);
- the crankshaft pulley in the used block is larger than mine and has 2 belts. The mechanic explained we will swap the pulley.

Also, Intake manifold is different that's why I can't use the entire engine (Only the block although the year must be 98+).

How can I know the engine year with the reference 438730 located on the block?

Thank you
Last edited by abdocis on Sun Jan 08, 2017 5:23 am, edited 1 time in total.
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Re: Isuzu 6VD1

Postby Espltd78 » Sun Jan 08, 2017 3:41 am

I m not really sure on all your questions but if the intake is different and there are 2 drive belts instead of 1 serpentine then the engine is obviously pre 98. As far as if that block will work with the 98 plus head I know there has been a few write ups around here on the ability to interchange heads and blocks. I dont have the time to go through and look now though I do recall reading about people doing hybrids of the 2, just not sure what was recommended or how they went about it, hopefully someone else more knowledgeable will come along.

Are 98 + engines hard to come by in your area ?? If not I would just look around till you find one of those for a perfect swap. I know in my area they are actually the more common anyway.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Sun Jan 08, 2017 5:20 am

Thank you!

I hope that someone else can give me more details to help the mechanic guy.
If the engine is pre 98, I don't know if we will have an isssue after block swap.
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Re: Isuzu 6VD1 block swap

Postby totten » Sun Jan 08, 2017 12:13 pm

I would look around for 2000-2004 engine used ,be a lot easier on you replacing. Look on Ebay for used engines in that years. You have a ion sensing engine. :idea:
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Re: Isuzu 6VD1 block swap

Postby abdocis » Sun Jan 08, 2017 6:00 pm

This engine is really rare in my region.
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Re: Isuzu 6VD1 block swap

Postby chimpboy » Mon Jan 09, 2017 6:51 am

What block have you got? Do you have the rest of the engine or just the block? If you have the whole engine you can easily check if it is DOHC or SOHC just by looking. Can you post photos of it?

There are differences in the older blocks and depending on what you have, I believe you may not be able to use it. Most of it will bolt together but you need to get the timing parts working together and that may be a problem.
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Re: Isuzu 6VD1 block swap

Postby Buster28 » Mon Jan 09, 2017 9:53 am

chimpboy wrote:There are differences in the older blocks and depending on what you have, I believe you may not be able to use it. Most of it will bolt together but you need to get the timing parts working together and that may be a problem.


The 93-95 6VD1 use a crankshaft with a 24x Crankshaft Position Sensor reluctor, the 96 and newer 6VD1 use a 58x reluctor as shown in the image. A 58x ignition system cannot operate using a 24x Crankshaft Position Sensor signal.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Mon Jan 09, 2017 10:33 am

Thank you Buster. Very interesting information.
Please, what do you mean by "24x reluctor"?

Thank you
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Re: Isuzu 6VD1 block swap

Postby gwana66 » Mon Jan 09, 2017 11:16 am

In the image above, the large gear-looking structure on the crankshaft is the reluctor wheel. That wheel and a sensor send timing information to the computer. On a crank from a 96 and newer engine, that wheel will have 58 teeth, as shown. 93-95 crankshafts have a wheel with only 24 teeth. They are not compatible, as it will send a bad signal to the electronics. Take off the oil pan and count the teeth on this wheel.

Are you using the crankshaft as well, or just the engine block? That may narrow down the responses.
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Re: Isuzu 6VD1 block swap

Postby Buster28 » Mon Jan 09, 2017 11:39 am

Actually the 24x reluctor has less than 24 teeth, this is a 93-95 6VD1 crank :
http://www.ebay.com/itm/ISUZU-RODEO-3-2 ... cl&vxp=mtr
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Re: Isuzu 6VD1 block swap

Postby abdocis » Mon Jan 09, 2017 11:46 am

Thank you gwana66! I will use the block including crankshaft and piston
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Re: Isuzu 6VD1 block swap

Postby squeaks-leaks » Mon Jan 09, 2017 3:31 pm

Just out of curiosity why not rebuild the one you already have? Did I miss something is there a hole in the block? Did it spin a main bearing or something? If the crankshaft really is damaged it should be able to be turned by any decent machine shop and you would be able to run oversize bearings to make up the difference. Unless there is something else wrong with the crank.

The only thing that I am not sure of is if there are oversize bearings available for this engine or not. It sure would make it a lot easier knowing that the crankshaft signal would be correct because its the one that came out of the SUV. I am not sure why your mechanic did not bring up this option?

P.S. Thanks for the picture Buster28 its nice to know now that the 3.2s have 4 bolt mains.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Mon Jan 09, 2017 7:20 pm

Thank you squeaks-leaks.
You are right but if the block is compatible, I think it will be more confortable for me. The problem isn't only camshat wear. The mechanic found same problem with bearing. Changing the whole block will allow us not to waste too much time...

Buster28: Unfortunately, The mechanic did not remove the oil pan to check the number of teeth on the wheel.
Currently, all parts are mounted without any problem (cylinder head, compressor, steering pump, pulley, cylinder head gasket, etc.

Chimpboy: The block is a DOHC with 24 valves
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Re: Isuzu 6VD1 block swap

Postby abdocis » Tue Jan 10, 2017 7:25 am

Greetings gwana66,

The used block has crankshaft and sensor include. We will use the whole block. I think in this condition, we should not have a bad signal to the computer according to your explanation.

Basically, the test will be done today or tomorrow. I will let you know and hope this topic will help isuzu community.

Thank you all
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Re: Isuzu 6VD1 block swap

Postby gwana66 » Tue Jan 10, 2017 10:57 am

I think you may be misunderstanding. If your replacement block has the 24x reluctor and sensor, even if you put the whole thing in place of a block that had a 58x reluctor and sensor, it will not run because the computer is looking for a 58x timing signal. You also cannot just put the 58x sensor on a 24x block and have it run.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Tue Jan 10, 2017 11:16 am

Ok gwana66. I see now!
The used block made before 98 and it is SOHC. The mechanic confirmed that because there is only 1 camshaft by cylinder head and 4 valves by cylinder.

I think the last solution is to get a compatible block
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Re: Isuzu 6VD1 block swap

Postby abdocis » Tue Jan 10, 2017 11:34 am

Gwana66,

Does-it possible to solve this issue by swapping out the reluctor wheel? If yes, I can also swap the sensor
Thank you in advance.
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Re: Isuzu 6VD1 block swap

Postby gwana66 » Tue Jan 10, 2017 2:09 pm

The reluctor wheel is part of the crankshaft. I don't think it comes off. If you change the crankshaft, you will need new bearings.
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Re: Isuzu 6VD1 block swap

Postby Buster28 » Tue Jan 10, 2017 7:23 pm

The reluctor on a 93-95 crank cannot be removed. If you have a 96-97 block/crank you don't have a problem because they use a 58x reluctor.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Tue Jan 10, 2017 7:37 pm

Thank you all!
The mechanic received this information. He wants to test using the used block.
Please Buster28, how to know the replacement block year?
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Re: Isuzu 6VD1 block swap

Postby chimpboy » Tue Jan 10, 2017 7:50 pm

Just take off the oil pan and count the teeth on the reluctor.
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Re: Isuzu 6VD1 block swap

Postby Buster28 » Tue Jan 10, 2017 7:54 pm

Remove the crankshaft position sensor, look in the hole, rotate the crank and count the number of "teeth" on the reluctor, if you count 58 your OK. If not 58 you have a boat anchor.
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Re: Isuzu 6VD1 block swap

Postby abdocis » Tue Jan 10, 2017 8:08 pm

Thank you Buster28 and chimpboy!
The mechanic just inform me that he already mounted the engine in the car and planned to make a test tomorrow. But I am thinking another solution: sometimes, the vin number is written on the cylinder head side. With this information, we could know with precision the replacement block year
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