77_KHL620 Posted November 2, 2012 Report Share Posted November 2, 2012 I recently moved from the Dallas/ Fort Worth, Texas area back to my hometown in Central Oregon. I have been a Datsun fan(atic) for years, and I currently own a 1970 Datsun 240Z and a 1971 Datsun 240Z. I have also owned several other Datsun and Nissan vehicles. Upon moving back, my father gave me a 1977 Datsun 620 King Cab. It belonged to a friend of his who owned it since it was new. Upon doin some research, I found that I am the proud 2nd owner of a 1977 Datsun 620 King Cab with L20B motor, FS5W71C 5-speed transmission, and all of the original paperwork and every reciept EVER for this truck. Anyone have any ideas if this truck is rare, being that it has the original L20B with peanut A87 head and the 5-speed? I am unable to post any pics at this time due to a malfunctioning camera, but I plan to have some up soon. Some of the plans for the truck are- Rebuild L20B bottom end using quality, high-performance parts. Rebuild the A87 Peanut heads with Manley or Ferrea valves, Nismo springs, high-lift cam, etc. Forged Pistons with 9.98:1 compression Dual Mikuni Carbs Complete airbag system. Mahogoney bed floor. More plans to come. I will keep you guys updated. Quote Link to comment
Eagle_Adam Posted November 2, 2012 Report Share Posted November 2, 2012 Mahogoney bed floor. you have my attention! i really hope you follow thru,ive been wanting to see a wood floor in the bed of a 620 for a long time now. Welcome to Ratsun, work on those pics asap as im sure the demands for them will follow shortly Quote Link to comment
]2eDeYe Posted November 2, 2012 Report Share Posted November 2, 2012 Welcome, can't wait to see those pics :D Quote Link to comment
Silvester Posted November 2, 2012 Report Share Posted November 2, 2012 Yeahh buddy! Can't wait to see this build in progress. Quote Link to comment
flatcat19 Posted November 2, 2012 Report Share Posted November 2, 2012 Still not seeing it. Quote Link to comment
datzenmike Posted November 2, 2012 Report Share Posted November 2, 2012 The '77 would have had a U67 head, so the A-87 was likely swapped on in the past. How do you know it's a closed chamber head unless it was off? '77 was the first year that the FS5W71B was available as an option on the 620.... very nice. Quote Link to comment
77_KHL620 Posted November 3, 2012 Author Report Share Posted November 3, 2012 I know it is a peanut head because I had it off due to the fact something is wrong with the motor. I asked the former owner and he said he never did anything to the motor other than have the oil changed. Quote Link to comment
danzo620 Posted November 3, 2012 Report Share Posted November 3, 2012 Dude. With that description you gotta make with the pics. Sounds awesome. Quote Link to comment
datzenmike Posted November 3, 2012 Report Share Posted November 3, 2012 Look behind the dip stick handle. What's stamped into the block just below the head? Quote Link to comment
77_KHL620 Posted November 3, 2012 Author Report Share Posted November 3, 2012 Ok. Now I am confused. The block has a casting code of L18. The L looks kinda funky though, kinda like a backwards 7. I really am not sue what to say now. Quote Link to comment
datzenmike Posted November 3, 2012 Report Share Posted November 3, 2012 Motor has been swapped. The '77 would have been a U-67 head on an L20B. So you are right. That's very rare!!! :lol: :lol: Quote Link to comment
flatcat19 Posted November 3, 2012 Report Share Posted November 3, 2012 That's very rare!!! :lol: :lol: Even rarer, is pictures of this truck!!! Quote Link to comment
77_KHL620 Posted November 3, 2012 Author Report Share Posted November 3, 2012 Sorry guys I am working on the pics. I will have some shortly. Quote Link to comment
datzenmike Posted November 3, 2012 Report Share Posted November 3, 2012 Does that motor have two dip sticks. One used at the back and one behind the alternator that's not used??? Quote Link to comment
]2eDeYe Posted November 4, 2012 Report Share Posted November 4, 2012 Good looking truck more pics of the outside :D Quote Link to comment
77_KHL620 Posted November 4, 2012 Author Report Share Posted November 4, 2012 Datzenmike, You are correct, the block has two dip stick locations. The one at the back is plugged and ther is another that is roughly 3" forward where the dipstick is now. I will try to get some pics of this up as soon as I can. Anybody got any ideas about this? Quote Link to comment
datzenmike Posted November 4, 2012 Report Share Posted November 4, 2012 This is common of an imported JDM motor. Often back in the '80s it was cheaper to replace a motor with a low mileage import than to rebuild them. Often they had rare (here anyway) closed chamber heads. dual SU carbs and intakes. The forward dip stick may have been easier to get at on right hand drive cars in Japan with the brake master and booster in the way. Quote Link to comment
77_KHL620 Posted November 4, 2012 Author Report Share Posted November 4, 2012 Sweet. I am beginning to think maybe I should just rebuild this motor or fix it rather than replace it. It kinda goes with the theme of the truck I have in my head. I wish I knew photoshop well enough to create an idea of what I want to accomplish. Anyone know where to get a complete rebuild kit with pistons, bearings, seals, gaskets, etc for a reasonable price? I have found some L18 38mm carbs as well as several 40mm Mikuni setups. I have also seen dual Weber setups. The motor currently has a Weber on it now. Quote Link to comment
flatcat19 Posted November 5, 2012 Report Share Posted November 5, 2012 Why does it need a rebuild? Quote Link to comment
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