dougfj62

Cleaned up the valve cover with grease remover, covered Datsun OHC and accent lines with blue tape and sprayed the valve cover with RED VHT wrinkle paint. Gotta be careful not to spray too much bc gravity is not its friend, will cause drips lines.

TNX KELMO, Followed your procedures. Lots a nudging and prying, small sledge hammers taps to the rubber mount and a screwdriver guiding the mount to the holes , the engine slipped right into place perfectly.

Spent a few hours today trying to muscle the LB20 into the engine bay and failed . The drivers side mounting bracket is literally 1/2" short of bolting down. Is there a specific technique to align the holes. I am using original L16 brackets and rubber mounts. I have read others using their original L16 rubber mounts for their LB20 install so I cant image these would not work. Do I need t acquire different brackets and and rubber mounts? Any advice greatly appreciated.

Good Deal!!! No, I did not have the clutch cover balanced to the flywheel. Not familiar with balancing a clutch cover to the flywheel . What type of shop balances the flywheel to the clutch cover?

Finally assembled rebuilt LB20 motor and also had the flywheel resurfaced. The flywheel was not attached to the LB20 when I acquired the motor so I was not able to mark the flywheel and crankshaft. I have been reading through "how to keep your Datsun/Nissan alive manual" as well as a Chilton Manual for the 510 and can't find any information for installing the flywheel with it balanced to the crankshaft. I am guessing that it must have to do with top dead center, but I can't confirm and do not want to guess. Any information on the procedure to install the flywheel would be greatly appreciated. http:// http://

L20B collar (N1600) on the left and L16 clutch collar on the right. Major difference

Took about a day and half of bending, double flaring brakes lines and rerouting in the engine bay. 1000x better the 40 year old lines. Happy with results.

@datzenmike Thanks for the info- Just order from Nissan and will do a local pickup in Oceanside.

@datzenmike Looking at clutch kits for 79 620 pickup performance/high performance upgrade on rock auto- manufacturer is M-Pact. 1980 720 pickup clutch kits are the same part #s as the 79 620.

@datzenmikeFRAM LMAO 🤣 I saw the FRAM oil filter when I picked up the motor and just laughed. The previous owner gave me a 6 bolt 225mm flywheel- Truck flywheel. Needs resurfacing though. And will need to order a new 225 mm Clutch kit. Will my current L16 collar work?

After doing L18 research, parts availability and no history of the block, I ended up passing on the L18 and took a gamble on a L20B. It looks like everything is in decent shape for a 40 year old block, however I have not had chance to crack the head and timing chain cover. The previous owner purchased a package deal of engines and parts and the the only history he had on the L20B was the head was rebuilt. Can tell the a head rebuild by the cam shaft shims and the ports have been polished. Half of me is tempted to clean up the block, head replace the necessary parts from the L16 and get the 510 back on the road after 2 years in the garage. the other half -> the motor is out, a great time to deep dive into the motor, document what has been done and what needs to be done to get the motor in tip top shape.

This went surprising well after a year of engine bay prep on weekends. Sure is coming together. I am sure glad that I organized all the disassembled bolts and nuts into a labeled plastic parts box. It would have been mind boggling if I didn't 🤪 . I ll wrapping up the suspension this week and start on the engine bay components.

I’m going Thursday to inspect the block first before buying any pistons. But your probably right about ordering then a reply email to your order that the pistons are no longer available. I’ll update if I move forward on the L18

10 weekends of removing 50 years of oil, grease, dirt ,surface rust and metal corrosion from what seems to be a previous battery explosion. I finally finished the engine bay paint. Sprayed 4 coats of Primer Sealer. Sanded each primer coat with 220, 320 and 500 grit. Then did a final wet sanding with 600 grit. Sprayed 4 coats of Kasumi Green- Color code 554

Excuse my ignorance about oversize pistons. I saw these pistons and rings listed on Rockauto for a 73' Datsun 610 1.8L. Are these correct?