Charlie69 Posted February 24, 2016 Report Share Posted February 24, 2016 Mark do not forget I have a complete rebuilt L20B U67 head with new stock cam and Weber 32-36 on a Canon intake and completely rebuilt 3 speed automatic with new torque converter in my 520. I might after driving it and breaking it in decide to go KA with a 4 speed automatic. So this might be an other way to get your 620 going again. 2 Quote Link to comment
Charlie69 Posted February 25, 2016 Report Share Posted February 25, 2016 I talked to my brother Garret and he said he would build you a motor for your 620 you pay for parts and machining, labor is free because he likes how you work and help people. 3 Quote Link to comment
Pacific coast Datsun Posted February 26, 2016 Author Report Share Posted February 26, 2016 I talked to my brother Garret and he said he would build you a motor for your 620 you pay for parts and machining, labor is free because he likes how you work and help people. Wow what an offer im blown away by this offer !! Charlie Ill be calling you very soon & TY !!! Just today i did a mild teardown & degrease on the L 18 i have in the driveway & the clutch looks decent & the block has new freeze plugs along with a few other things i noticed. I just may put the head back on the block & switch over the manifolds & distributor & drop it in & see what the compression looks like. Common sense tells me to rebuild the existing short block but $ is beyond tight & i want to drive my truck not have it sit. 2 Quote Link to comment
Charlie69 Posted February 26, 2016 Report Share Posted February 26, 2016 Now your are making sense. If you get the summer out of it you are the much farther ahead! Quote Link to comment
Charlie69 Posted February 26, 2016 Report Share Posted February 26, 2016 Mark go ahead and put your other L18 in it. I will let garret know you will take him up on his offer. 1 Quote Link to comment
gene knight Posted February 26, 2016 Report Share Posted February 26, 2016 Take the motor out of your boat and use it 1 Quote Link to comment
Pacific coast Datsun Posted February 27, 2016 Author Report Share Posted February 27, 2016 Thats the plan Charlie. Ill slowly get the "spare" cleaned up & parts swapped over. Luckily my core support unbolts which makes pulling the motor easy. Gene the boat L 20 is staying put...ill be on the water soon. 2 Quote Link to comment
Pacific coast Datsun Posted February 29, 2016 Author Report Share Posted February 29, 2016 Ok in the last few days Ive been cleaning up the "spare" L 18 getting it ready to swap into the 74. Im painting the block gloss grey & the parts will be purple. I noticed a small bracket on the DS of the block by the timing chain cover that may have been for the air pump or an AC compressor. And i discovered that 3 of the 4 mounting holes on a Hardbody AC compressor line up with the threaded holes on the block & the pulley lines up with the other 2 pulleys ! 2 Quote Link to comment
Charlie69 Posted February 29, 2016 Report Share Posted February 29, 2016 Here mark I hope this helps. 2 Quote Link to comment
Pacific coast Datsun Posted February 29, 2016 Author Report Share Posted February 29, 2016 TY Charlie that sure does help alot. I may mount the HB A-C compressor so you can see how it lines up with the other pulleys. Although AC in my truck is pointless im intrigued that this part could be used along with other HB parts to add AC to a 620. 1 Quote Link to comment
sebpv Posted February 29, 2016 Report Share Posted February 29, 2016 Correct me of Im wrong, the tranny plate goes on the block before the flywheel? Did you notice after the picture was taken? 1 Quote Link to comment
Charlie69 Posted February 29, 2016 Report Share Posted February 29, 2016 You are correct sebpv. The plate goes on before the flywheel. Good eye! Quote Link to comment
Pacific coast Datsun Posted February 29, 2016 Author Report Share Posted February 29, 2016 This motor only came with the upper plate. I may have to remove the one from the bad motor and use it. 1 Quote Link to comment
Charlie69 Posted March 2, 2016 Report Share Posted March 2, 2016 Mark are the both L18s? Quote Link to comment
Pacific coast Datsun Posted March 3, 2016 Author Report Share Posted March 3, 2016 Correct both L 18's. The spare motor had the liwer half of the trans exposed which is odd. The head us a W 53 & looks like its never been machined. It had smog runners on the exhaust manifold..ill run the L 16 ex mani on the bad motor. Ill have pix up soon Tinypic has been giving me fits. 1 Quote Link to comment
Pacific coast Datsun Posted March 6, 2016 Author Report Share Posted March 6, 2016 Ok heres the "spare" L 18 ive been cleaning up the last week or so... Needs a few parts off the bad L 18 switched over to the new L 18 but nothing major. Dont know when ill actually do the swap seeing as work is getting busy & i need to borrow a hoist. 2 Quote Link to comment
cruznude Posted March 7, 2016 Report Share Posted March 7, 2016 looking good there Mark. Can you get a picture if the truck presently with the targa top off? 1 Quote Link to comment
cruznude Posted March 7, 2016 Report Share Posted March 7, 2016 Sorry without the top off. 1 Quote Link to comment
Charlie69 Posted March 7, 2016 Report Share Posted March 7, 2016 I am going to talk to my little brother. Might be a road trip in the near future! He has an engine hoist and a trailer. He is working on building a motor for his Jeep right now. 1 Quote Link to comment
gene knight Posted March 7, 2016 Report Share Posted March 7, 2016 That's whyI like my cherry picker /engine hoist is foldable and don't need a trailer to haul it anywhere 1 Quote Link to comment
Pacific coast Datsun Posted March 8, 2016 Author Report Share Posted March 8, 2016 I am going to talk to my little brother. Might be a road trip in the near future! He has an engine hoist and a trailer. He is working on building a motor for his Jeep right now. Dont go out of your way Charlie but IF you guys come out keep me posted. I can unbolt my core support making pulling the engine very easy. 1 Quote Link to comment
Pacific coast Datsun Posted March 8, 2016 Author Report Share Posted March 8, 2016 looking good there Mark. Can you get a picture if the truck presently with the targa top off? Thanks Lance..here you go... 2 Quote Link to comment
Charlie69 Posted March 8, 2016 Report Share Posted March 8, 2016 Sweet picture Mark! I will see if my brother has time. Quote Link to comment
Charlie69 Posted March 12, 2016 Report Share Posted March 12, 2016 Mark let me know when you have the motor ready to install. Been really busy with life stuff before surgery. I got you message but with your work schedule I am afraid to call and wake you up so give me a call when you can. Quote Link to comment
Pacific coast Datsun Posted April 12, 2016 Author Report Share Posted April 12, 2016 Ok i tore into the existing L 18 last week & discovered a dime size hole in the lower rad. hose caused by rubbing against the Alternator fan / pulley causing the coolant to escape & the temp to climb to 210. I'm running a 280 zx lower hose & lower jacket so it clears the bigger Alternator & I forgot to zip tie the lower rad. hose out of the way. The motor turns over just fine with no extra noises so I'm Taking Charlie's advice & run a compression test followed by draining the oil to check for metal fragments. In a semi perfect world i just blew a head gasket & it's a $150 fix. 2 Quote Link to comment
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