My new 521
Posted 20 February 2016 - 10:20 AM
Already replaced the rotting fuel lines and put in s new battery. Love Datsuns!!
Posted 20 February 2016 - 10:29 AM
Looks like a nice 521! I know a lot about 521 trucks I have had them since I was in high school. I graduated in 1973.
Reach under the front fenders with a hose. Flush dirt out by the door, dirt collected there causes rust out in the lower fenders. Spray water up and over the headlight buckets, at the front, dirt als get up there also.
How are the floors in your truck?
You can edit your own posts on Ratsun any time. No need to start multiple threads on the same truck.
Clicking on my name gives you an option to search for my posts. You will find a lot of 521 information in my posts, and threads.
By the way, the body of a 521 uses American (SAE) sized parts, and thread pitches. The engine, transmission and rear axle is metric. Bolts in the drive line are SAE. SAE fasteners are also commonly called fine thread.
Posted 20 February 2016 - 10:36 AM
Posted 20 February 2016 - 10:42 AM
Thsnks for the info on the fasteners. Wasn't aware they did that
Posted 20 February 2016 - 10:46 AM
This truck, http://community.rat...gon-datsun-521/had "OK" floors, I cleaned them up, put epoxy primer on them, PPG DPLF, then used fiberglass, with marine epoxy from Tap Plastics for resin.
I would suggest getting a L-20-B engine. It is a bolt in swap. You can also rebuild,or obtain a better L-16, or L-18. The L-20-B engine is a little taller than the L-16, and may require slight modifications to the exhaust pipe.
The L-16 engine likes to rev up. 7,000 Redline. 6,500 yellow zone. Perfectly happy doing 4,000 on the freeway at 60 MPH. 5 grand all day long.
Posted 20 February 2016 - 10:47 AM
OH Dude I go the same truck I just painted the rims white
maybe lower it if you like and just leave it as is
go to olddatsuns.com read the tech section and save it. Lots of infor
Posted 20 February 2016 - 02:16 PM
I would agree Daniel about the L20b, it was the most useful upgrade I ever made to my 1971 Datsun 521 truck.
To give you an example, with the L16 I could not follow my friends up a logging road in first gear, as they had low range and all I had was first gear, the L16 didn't have the torque to follow them that slow, so I would have to wait on a flat spot till they were out of sight, then I could rev it up and haul ass up the road and make it to the top, after I put the L20b in the truck, I could follow them up the hill in 2nd gear without any problem, I could go up a hill in 2nd gear that the L16 would not even go up in 1st gear.
The L20b is a great upgrade, a 5 speed is also pretty nice also, as you don't have to listen to the engine screaming down the hiway in 4th.
There are a lot up decent upgrades for the 521, but at first I would just go with the L20b as it is a bolt in.
Posted 20 February 2016 - 05:00 PM
Check the classified ads.
Check local junk yards where you live. L-20-B engine were used in 620 trucks, Later model 510's (also known as a Datsun A-10).
The L-20-B can be easily identified by double bolts at the top of the timing chain cover. You can easily see the double bolts near the base of the distributor, between the two fan blades
Posted 20 February 2016 - 09:03 PM
Sweet truck man and better price! Who are your friends or neighbors? Cause I'd love to meet em and score a free truck!! L20's are a dime a dozen at the pick-n-pulls. Just have to look out for them. Welcome to the house! Scour the threads and pinned items for good stuff and ideas. I rebuilt my L16 all the way through for about $250.00, including the oil!!
If it eats gas and blood type is measured by weight, it's good by me!
Posted 22 February 2016 - 10:49 PM
If it goes up, rings.
If it stays the same your not sealing because of head gasket or valves.
Cylinder pressure balance would be your next line of testing if a wet compression test doesn't give you anything.
You can't hang if your nuts haven't dropped...it's physics
Posted 23 February 2016 - 06:31 AM
I think its around 140 mine was back in the day.
adjust the valves first.
if seems torun fine , fuck it just drive it till you buy spare stuff and build a motor on the side.
Most L motor stuff one can get nearly free.