Jump to content


Photo

810 sedan down.


  • Please log in to reply
38 replies to this topic

#21 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 01 November 2016 - 10:49 PM

Well until someone buys it im going to continue to build it up the way i want it..a funny thing after dropping the pan i found out the bulge is just for the strainer.. So that's an easy workaround. But after refering to my haynes manual on the 810, they have the wrong picture of the pan on page 36...silly nissan...

#22 Lockleaf

Lockleaf
  • Location:Happy Valley, Utah
  • Cars:'71 510 Goon, '90 240SX, '85 720, '69 Roadster, '96 Pathfinder, too much other shite

Posted 01 November 2016 - 11:50 PM

You can swap the pans and pickup tubes competely from one motor to the other.

Half Pint ('71 510 Goon) http://community.rat...agon/p?=1269361

 

Audrey ('69 Roadster 1600) http://community.rat...rey-the-ratster

 

Tiny Havok ('85 720 DIY built Crewcab 4x4) http://community.rat...ache/?p=1395455

 

720 Shenanigans http://community.rat...20-shenanigans/


#23 datzenmike

datzenmike
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 02 November 2016 - 05:31 AM

Are you kidding me! Dude...i tried being civil and play the apologetic role,( im sorry, im new here, please, i only had my 810 for 2 years. Only my first time doing engine work... Blah blah blah)...but really man, your just a fucking buzzkill...whats wrong with you? Are you a police officer or BLM agent? Maybe just a tree hugger crying for cleaner earth...whatever it is, get off my case. Cars are for driving..not whining about DMV rules, or BAR regulations... Post something helpful maybe.,

 

No different than a warning about fines for not wearing a seat belt. The next inspection will not pass visual or emissions. That's a lot of work and investment to be pulled off the road later. Then the car sold. Not a po po, BLM (whatever that is) tree hugger, with the DMV or BAR agent. I'm more interested in keeping your 810 on the road than you think. If you want to drive it, be smart about it. Being more aware of potential problems, is being helpful.


Posted Image

#24 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 03 November 2016 - 09:29 AM

Well, thanks for caring...perhaps you could give me all your smog equipment?if it wont pass its not the end of the car..i have buddies out in arizona or new mexico...i can use that loophole or go find a crooked shop in otay...but its nice your looking out for me..like my own little fairy smog mother...

#25 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 03 November 2016 - 03:04 PM

So the pans and strainers are NOT a simple swap.. The 280 block is machined with the pickup in the middle of the block and the 240 has it drilled up front...so im going to have to fab something up to reroute the line up front..im thinking to use the closest size copper tubing and cut the original strainer flange off. Put in a compression fitting in between the flange and crank it down...then run the line to the bottem of the pan while clearing the cranks path. Then attach the filter or make a new one, whatever... By the way. BLM is the Bureau of Land Management...if your ever having fun out at the desert or in the middle of nowhere. These are the ones who make sure you pay a hefty fine for running over a bush...not to be confused with the "black lives matter" retards...

#26 datzenmike

datzenmike
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 03 November 2016 - 03:42 PM

Hey, I understand skirting the law and getting around stuff, but older now and head covered with bumps.  :lol:  The pick up may be closer to the front but still on the right side to feed into the oil pump gallery, but be sure to support it to a main bearing cap. The 720 engine oil pick up has a support strut that uses the main bearing bolt to hold it.

 

That compression fitting doesn't have a nylon seal does it?


Posted Image

#27 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 04 November 2016 - 09:39 AM

Ya i scratched the copper pipe idea...just welded up a steel one, also had to snip out a small section of a baffle in the pan..got it on and all filled up with no leaks...but..... Now my dip stick wont work..lol dear got what will become of me without a dip stick! It should be in the car today...then just throwing on all my smog stuff..or, wait.....

#28 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 06 November 2016 - 10:57 AM

Well its in the car and runs good, has alot more pull...still wont be winning any races anytime soon but its at least tolerable to drive...just got to button up the exhaust so it doesnt sound so demolition derby.

#29 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 20 November 2016 - 03:19 AM

So owning an old car is really a pain in the ass...I have been fucking with this thing for so long...it's nothing but a headache..I'm trying really hard to be a Datsun fan but damn its a struggle..I commend those of you who continue fixing up these fixer uppers...I have been struggling with this blow-by issue...so the 240 smoked like crazy... With new rings in it... Smoked like crazy... Now the 280 in it...smokes like crazy.....but here's the catch...why the fuck does all of this smoke come out my block and valve breathers (that is supposedly pushed past the rings) but not a single puff of smoke comes out of my tail pipe? Even with the exhaust taken off down to straight headers still I don't see any smoke...yet it billows out the breathers... Hope someone can answer me that... Cause I can't wrap my mind around it...

#30 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 20 November 2016 - 09:26 PM

OK, after thinking a bit more I've theoried up this scenario...it's not smoke from the burning gasoline in the cylinder. It's smoke from the hot combustion gasses kissing the oil in the bottom end..and I'm not seeing any smoke out the exhaust because by the time the valve opens and piston is on its way back up, all of the would be exhaust smoke has long since made its way through and around the rings..it sounds OK in my head...but maybe someone else can clear things up..and what would the peak pressure upon detonation get up to in the cylinder..cause it still seems like even 100psi would never get around even a worn out ring in the amount of time it takes the cylinder to reach bottom and the exhaust port to open.... anyway I took the rings that I put in the 240 motor to check if I had maybe cracked them or installed them funny and everything looked tight as a drum...this blowby shit makes me crazy...

#31 datzenmike

datzenmike
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 21 November 2016 - 05:46 PM

The things in common between the L24 and the L28 is the oil pan and the pickup tube. Using the L24 dipstick??????

 

Drain the oil and refill with exactly 4 quarts or whatever is recommended. Check the dipstick. Is it on the full line or below? If below you are over filling it.  


Posted Image

#32 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 22 November 2016 - 11:50 AM

I got the pan, pickup tube situated. It's the pan on the z cars and the blocks on the z cars are different then our 810. But with a rerouted oil pickup and slightly modded pan, and cutting about 1 inch off the dipstick it works...motor is in the car and running, I also know how to change my oil. But what I don't know is how to get rid of blowby...I'm going to re-ring this engine and see where that gets me...my neighbor thinks I'm a lunatic pulling the motor every other weekend...this will be the 4th time in 3 months...

#33 datzenmike

datzenmike
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 22 November 2016 - 12:25 PM

I know that you know how to change oil.  My concern is that it's over full. Because of the L24 pan on an L28 and the two possible dipsticks the mark on the stick being used may be wrong. Only way to check or be positive is to drain and refill with a known correct amount. Then confirm or mark a new full line on the dipstick.

 

All engines have some blow-by. If your crankshaft is spinning in the oil, it will splash up onto a fog of oil droplets and simply over power the screens on the block vent or the valve cover.

 

This is an easy check that costs nothing to do.


Posted Image

#34 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 23 November 2016 - 01:57 PM

I see. I didn't even think of that. I assumed they both would take the same amount of oil since they were the same casting, or are they not?. Is it more displacement because the piston is bigger or because stroke is longer? I did like you said though when I installed it I drained completely and refilled with 6 quarts as in my manual for the l24 then I just trimmed the dip stick till the rubber plug seated and the oil marking was still right in the crosshatch. It only needed about an inch taken off. and could you explain a bit more about this oil fog? Cause it's not actually dripping out of the breathers and it doesn't seem to be a condensed oil vapor..it seems to be burned oil smoke that is coming out..and is the test you mentioned a leak down test? It seems that it could only be blowby if it's smoking out the crankcase. What other possibilities would cause that?

#35 datzenmike

datzenmike
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 24 November 2016 - 06:49 AM

Check again. Never heard of a Datsun taking 6 quarts. Even the six cylinder is usually 4. HRH... Matt would know for sure.


Posted Image

#36 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 24 November 2016 - 12:09 PM

Ya, my manual for the 810 definitely says, "L24 SOHC inline 6 cylinder engine - 6 US quarts (5.7 litres) oil capacity" I have some other manuals on my PC...I'll see if they say something different..

#37 datzenmike

datzenmike
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 24 November 2016 - 07:49 PM

Well so much for that idea. :lol:


Posted Image

#38 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 25 November 2016 - 07:13 PM

Ya I was wishing it was the answer..so I drain 1 quart at a time for 3 quarts..it didn't change anything... guess it's coming back out...

#39 Shrapnel810

Shrapnel810
  • Cars:broken ones

Posted 15 December 2016 - 09:20 AM

Just an update...motor is back in the car and running tits with zero blowby....yay for me..after teardown it was obvious why it was smoking. Two pistons had broke right between the two compression rings it just tore the entire step right off about a third of the piston...so I got some new to me ones off eBay for 125. New rings and new tires for the hell of it...back on the road!