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Member Since 20 Dec 2010
Offline Last Active Today, 07:48 AM

#1497548 74' 620 Stopped Suddenly While Driving

Posted by Doctor510 on 18 June 2017 - 08:17 AM

When that happened to me, I found that the alternator had a short in it, it blew the main +12V line from the alt to the main harness.

#1496328 Bad oil pump?

Posted by Doctor510 on 13 June 2017 - 07:13 PM

Sorry to keep all of you in suspense.

So, this is the story.

Got the engine, rebuilt already by a shop from previous owner.

I got the oil pump from ebay.

I was the one that installed the engine and placed all other essential parts in order to have a working power plant.

This was my first time replacing an engine.

After this mishap, I did some research and talk to some more experienced Datsun guys.

Long story short.

I did not bled the oil pump.

I simply installed it and then install the filter.

For some of you that do not know (like me) you need to bleed the pump in order to get the oil pump gears lubricated. Since I failed to do so the gears simply got to hot to quick and ceased to move.

Causing the damage you see in the picture.

Very expensive learning lesson for me.

Now, I am opening the engine so I can inspect the damage.

since I run the engine 3 or 4 times for about 5 to 10 minutes each time.

And that's what happen.

Truly you mean PRIME the pump, not bleed!

#1494254 L16 Ticking noise after head work

Posted by Doctor510 on 06 June 2017 - 06:41 AM

The dowel pins live in the block, not the front cover,  This site has the best pictures for the Dist/OP drive set up avalable

  • d.p likes this

#1493257 Main Cap Bolts - Z24

Posted by Doctor510 on 02 June 2017 - 01:35 PM

Pretty sure they are the same as the L series 4 & 6 cylinder motors

#1492516 GRIMACE

Posted by Doctor510 on 31 May 2017 - 03:14 AM

That sucks

#1491721 Nikki Carburetor Auxiliary Arm

Posted by Doctor510 on 27 May 2017 - 07:42 AM

Looks like the throttle cable in 90* out of alignment



OOOPPPS that was the choke cable

#1491365 L16 Ticking noise after head work

Posted by Doctor510 on 25 May 2017 - 08:49 AM

I have found that a 50 year old product works well, Permatex gasket shellac or Indian head gasket shellac, smells great too.

#1491354 Weber 32/36 rebuild float adjustment, need help!

Posted by Doctor510 on 25 May 2017 - 07:08 AM

Eye ball the float with the cover upside down, IF it's parallel, you're good to go!

#1490990 External Oil Filter not circulating/Oil P. Light on and off with RPM

Posted by Doctor510 on 23 May 2017 - 05:06 PM

Get a power drill and spin the gear clockwise until you've got oil coming out of the hose. If you do, you're fine. If not, there may be an issue with your pump or not enough oil perhaps?

Noy a good way to do that, the oil pump pumps by spinning counter clockwise and you have to drop the pump and put it back in is use the method.  Better to pull the spark plugs and spin the motor with the starter using a remoter starter switch.  If your "in and out" hoses are correct might take a couple of minutes, assuming that you primed the OP.

#1490382 L16 Ticking noise after head work

Posted by Doctor510 on 21 May 2017 - 11:25 AM

Did you add ZDDP to your oil?  That's unrelated to your ticking, smart if you did.

#1488986 Remove dust cap Front wheel bearing

Posted by Doctor510 on 16 May 2017 - 11:57 AM

Leave your guns at home son, you are not dealing with amateurs here.  Use a pair of channel lock pliers to remove and a proper blade punch to install them.

#1488464 Do I really need vacuum port?

Posted by Doctor510 on 14 May 2017 - 01:39 PM

Plug the vacuum port on the carb and do not hook up the vacuum adv unit, leave it alone, if you remove it the adv plate can move and screw up you timing, 12* BTDC at idle and 34-36* BTDC at 2,800.   Make sure that you mech adv system is healthy and not sticky.

#1487847 Radiator hoses for a 240z the same size as an L16?

Posted by Doctor510 on 11 May 2017 - 03:11 PM

Get a braided stainless kit, it makes the hoses look custom.  The Z hoses are the same diameter but TOTALLY different shape and will not fit.

#1482347 Which distributors work with L20-B

Posted by Doctor510 on 23 April 2017 - 06:50 PM

Try the one out of a 78 620 w/MSD.  Much like the "match box" but more reliable if you re-curve it!

#1476683 Gas pedal replacement linkage ball?

Posted by Doctor510 on 02 April 2017 - 02:26 PM

Try Summit for Holley linkage.