Thread: What year is this 4bd1

This is no.1 piston is it a alfin or plain aluminum one

Originally Posted by Adrian18

This came my way today with a 5 speed isuzu box number Near ij pump on block are 88728nf cast in its a na motor was in a npr truck 87????its lost its water no1 bore and piston are scored so it will be a re build couple of interesting point unusual intake manifold... skinny injectors ....supposedly npr 87 but looks newer what do you think

Edit - see C_H_T's post below.

Engine number is on LHS of block.

Well its 948673 my engine in my ute now is a 85 and its 706698 so ??????

Originally Posted by Adrian18

This is no.1 piston is it a alfin or plain aluminum one

Alfin Pistons have a steel groove whiich the first compression ring sits in. That pic looks like an Alfin piston to me. Is that darker material on either side of the ring steel?

Will check on the engine number thing - I think it was Bush65 who posted that.

The year of manufacture is cast into the rhd side of the block below the injector pump - eg 4BD1 92 - 1992 manufacture

C H T

x2 on RHS. As in drivers side. Spent a few hours under my sump recently...

The first to digits cast on the RH side - 88 by your OP.

Also look for the year (and maybe month - can't remember for sure) stenciled in permanent ink on the head, under one of the front posts for the rocker shaft. However this can scrub off during vigorous cleaning. Also take note of the stencil printing at 2 places on the deck of the block before you get carried away with cleaning as they contain useful information about piston and liner grades, etc.

I like those inlet manifolds and have had no luck finding one so far for myself.

I'm going to say early 88.

My 4BD1T is an 89. I don't know if the dipstick change at end of 88 onward was also changed on the NA motor. The covers on the tappet chest are different to mine as is the fan. The acoustic cover also, but I inclined to think that is a difference between turbo and NA.

From this distance the injector looks like those in mine.

Originally Posted by Bush65

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I like those inlet manifolds and have had no luck finding one so far for myself.
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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...