What year is this 4bd1

IP is compatible I'd be interested in seeing the underside of the block see if there is provision for oil squirters...

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Originally Posted by c.h.i.e.f

IP is compatible I'd be interested in seeing the underside of the block see if there is provision for oil squirters...

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I have a late model block (88?) in the shed the sites for the squirters have been milled flat ready for the additional holes to be drilled and tapped to take the squirters. Late blocks NA and turbo seemed to have all had the same treatment in build preparation it just seems the NA did not get the squirters installed.

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Originally Posted by isuzurover

Happy to have a look over here if you are still interested. Soltoggios may still have another.

This also supports my claim that I removed mine from a D, as opposed to Dougal's belief that they were only fitted to 4BE1's...

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Thanks Ben, that would be good if/when it isn't too much trouble.

And yes I did file away the last point.

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Originally Posted by Adrian18

Is this motor likely to have the late cam shaft Secondly would the injector pump off this motor be compatible to the 85 na 4bd1 I'd like to try it

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Check the plates on both IP's, they may be the same item.

Also post pics of the plates, as this could be another way to check the id of the engine (through parts list using IP part number).

Will get the nos .tonight bush 65 my plan is for the engine is the next project 4bd1t + mxa5 + lt230 remote mount ie tail shaft between in a 130 dualcab maybe is that whats in your 120 got any more pics

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Originally Posted by isuzurover

This also supports my claim that I removed mine from a D, as opposed to Dougal's belief that they were only fitted to 4BE1's...

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It's your lucky day Ben. I've found one and you're right.;)
Isuzu NPR Towtruck 7.5 Ton GVM | Trade Me
oi1202: ISUZU NPR 1989 | CarJam
Chassis number: NPR59PJ7100650X
Engine number: 907910

There don't appear to be many of these around. Most 4 ton NPR's of that vintage are turbocharged.

Other points of interest:
Dipstick location is the same as the pre-88 4BD1T's (between ports 1-2 instead of out the front).
I have the spec sheet for a 1998 NPR59PX, but I can't confirm if it's got the same intake.
78kw (110hp) at 3200rpm
263Nm at 1900rpm.
17:1 compression.
300mm clutch
MSA-5P box.

So now we know these intakes were fitted to certain 4BE1's and late 80's 4BD1's.
Mid 80's 4BD1's had conventional intakes, I have no data on when exactly the NA 4BD1 stopped being used or when the 4BE1 began.

The 4BE1 appears to be used in NKR's (skinny version of the NPR) until 1999 when it was replaced with the 4HF1.

The 1985 4BD1 in the NPR596:
72kw at 3,200rpm.
255Nm at 1900rpm.
17.5:1 compression.
275mm clutch.

Same gearbox, same axle ratio.

So are these manifolds better flow wise or what is the attraction

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Originally Posted by Adrian18

So are these manifolds better flow wise or what is the attraction

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I think they like them for the fact they can be modded to make a laminova setup

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Originally Posted by Adrian18

So are these manifolds better flow wise or what is the attraction

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Yes, they should flow better. Also, they offer the provision to chop the top off and fit in a WTA intercooler as I am in the (slow) process of doing.

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Originally Posted by Adrian18

So are these manifolds better flow wise or what is the attraction

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I'm only going from the pics and simply speculating that the manifold might help improve the VE a little and the connection to the front from a front mounted intercooler might be an advantage.

Just would like to compare with my existing manifold to see. Then if any improvement noticed, maybe enlarge the plenum if design figures indicate it.