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96 isuzu rodeo crankshaft issue

37 views 1 reply 2 participants last post by  Buster28  
#1 ·
Engine had spun main bearings so I tore it down and replaced the crankshaft with a new/resurfaced one and bearings etc. Everything looked identical so I reassembled the engine. When I tried to put the crankshaft position sensor back, it would not sit flush. It needed about 1/8-1/4 of an inch and looked inside and the sensor was hitting the crank reluctor. I thought maybe I did something wrong. After doing some research I found out that the 96 Crank has a 6.937" reluctor and the 98 and up Crank has 7.25" reluctor. This means the crankshaft I bought must’ve had the bigger reluctor on it although when I purchased it, it said it was for a 96. My question is could I possibly get away with buying the crankshaft position sensor for the 98 and have it fit and work or will I have no choice but to dissemble the engine again and swap out the reluctor. Also does anyone know if the reluctor ring itself is where the size difference is? Hoping I won’t have to tear it down again and have to get all new gaskets. Thanks in advance.
 
#2 ·
I am not the originator of this info but it seems to be valid.
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The '96-97 SOHC crankshaft uses a reluctor similar to the '98-04 (with teeth all the way around) but has the smaller 6.937" reluctor diameter to fit the short-deck block. I have to verify the tooth count between the '96-97 SOHC crank and the '98-04 crank. If they are the same, it may be possible to use a '96-97 SOHC crank in a '92-95 block and trigger '98-04 electronics. If not, the '98-04 reluctor could be resized to 6.937" and pressed onto a '96-97 SOHC crank. The '92-95 crank has a cast-in reluctor but it may be possible to machine it to accept a 6.937" reluctor. All cranks from '96-04 use a pressed on reluctor.
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