610wagon Posted June 28, 2023 Report Share Posted June 28, 2023 I have a 73 610 wagon and i need help identifying the engine thats in it. i believe it isnt the original motor that came with the car the number on it are 6j 91764 Quote Link to comment
datzenmike Posted June 28, 2023 Report Share Posted June 28, 2023 All 610s had either an L18 or L20B. Both are L series and the engine ID is on a flat boss just behind the oil dip stick. The '73 had the L18 engine. Quote Link to comment
610wagon Posted June 28, 2023 Author Report Share Posted June 28, 2023 yeah it came with an l18 originally but i need help identifying the engine that is in it now it says 6j on the block Quote Link to comment
Crashtd420 Posted June 28, 2023 Report Share Posted June 28, 2023 Got a picture...? Quote Link to comment
datzenmike Posted June 28, 2023 Report Share Posted June 28, 2023 Doesn't sound Nissan. 4 cylinder? OHV or OHC? Carburetor or EFI? Quote Link to comment
610wagon Posted June 29, 2023 Author Report Share Posted June 29, 2023 it is late i will post pictures tomorrow but it says datsun on the engine and made in mexico and 6j 91764 Quote Link to comment
datzenmike Posted July 4, 2023 Report Share Posted July 4, 2023 On 6/28/2023 at 11:41 AM, datzenmike said: 4 cylinder? OHV or OHC? Carburetor or EFI? KA engines were made there for the D21 Quote Link to comment
610wagon Posted July 8, 2023 Author Report Share Posted July 8, 2023 https://postimg.cc/gallery/jWmZyvT here are the pics Quote Link to comment
Crashtd420 Posted July 8, 2023 Report Share Posted July 8, 2023 Use the hot link for forum and you can post it directly... Quote Link to comment
Crashtd420 Posted July 8, 2023 Report Share Posted July 8, 2023 Looks like a J series to me.. . I originally was thinking maybe a J16 because of the 6j ... 1 Quote Link to comment
datzenmike Posted July 8, 2023 Report Share Posted July 8, 2023 Engine ID should be on side of block. Have another look, it may be embossed or raised lettering near there. North of Mexico we only got the J13 though they had J15s in their 510. That said, the E1 engine is very similar and the predecessor of the J series and it may not have the ID cast into the cylinder block. I see the mechanical fuel pump and fan have been replaced with electric. Quote Link to comment
iceman510 Posted July 10, 2023 Report Share Posted July 10, 2023 get a close up of the vehicle info plate on the firewall right behind the engine so we can compare what that says. Quote Link to comment
Stoffregen Motorsports Posted July 10, 2023 Report Share Posted July 10, 2023 Yes, the 6J stamping is throwing me off. J16 engine was stamped J16, unless there is some newer designation later on in the production run. Quote Link to comment
610wagon Posted July 11, 2023 Author Report Share Posted July 11, 2023 I looked everywhere with a snake camera the only other things it says Datsun and made in Mexico or Mexico also the plate on the firewall says its an l16 but I really doubt that but I will take more pictures tomorrow and post them Quote Link to comment
Crashtd420 Posted July 11, 2023 Report Share Posted July 11, 2023 5 hours ago, 610wagon said: I looked everywhere with a snake camera the only other things it says Datsun and made in Mexico or Mexico also the plate on the firewall says its an l16 but I really doubt that but I will take more pictures tomorrow and post them I did a little reading out of boredom and curiosity.... Wikipedia says the 610 only came with L series motors... so that would make sense the firewall says that... Definitely a motor swap because that's not an L series.... Quote Link to comment
datzenmike Posted July 11, 2023 Report Share Posted July 11, 2023 They did only come with L series. The L18 was used directly after the 510 ended and the 610 began production and continued up to July '73 when the L20B was used for the '74 model year. This is the first use of the 'new' L20B. All 710s and 620s began using the L20B in '75. That said officially, I suppose there may have been a few hundred L16s left over from the end of the 510 production. L16/18s are basically identical. It's not documented. Quote Link to comment
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