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My new 521


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#321 flatcat19

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Posted 04 December 2016 - 10:38 AM

Went and took these just for you...

IMG_20161204_103331858_zpseheowbdm.jpg


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#322 Datsunthug

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Posted 13 December 2016 - 09:13 AM

Thanks cat. Simple enough to build.
I soldered the heater core and think it should work. But I need to find a heater hose with an S bend to get around the back of the engine block where it connects to the inlet outlet of the heater core. I. D. 1/2 inch on heater core side and 5/8 on motor side. Anyone no a parts number of application that would work? I've got some brass couplers to reduce the size but they're kinda bulky. Might use a plastic fitting with a 90degree bend. I'd sure like to find a hose that would work without some mods tho

#323 Datsunthug

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Posted 03 January 2017 - 09:20 AM

Right front brake stopped working. Took it apart and the wheel cylinder has froze. No amount of pumping the pedal will move it at all. Soaked it for 24 hrs in pb blaster but it still won't move.
Does the wheel cylinder piston twist or does it only move in/ out. Was hoping I could take it apart to clean it and get my brakes back

#324 Lockleaf

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Posted 03 January 2017 - 10:22 AM

The piston moves in and out, no twisting. I've had to heat brake cylinders with a mapp gas torch to loosen them. I heated it, sprayed it with pb, then drove the piston out with a hammer and drift. I did all this with the piston locked in a vice, but vice grips and a friend would work too.

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#325 Datsunthug

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Posted 03 January 2017 - 10:40 AM

Cool. Thanks lockleaf.

#326 Lockleaf

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Posted 03 January 2017 - 10:41 AM

You will need a rebuild kit. That process will destroy what's left of any seals.

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#327 banzai510(hainz)

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Posted 03 January 2017 - 10:43 AM

alot of new clyinder dont come with a blled screw or its a different size( the Y manifold part)


Throw on some Weber sidedrafts, Rising Sun hood.... call it good

#328 Datsunthug

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Posted 03 January 2017 - 01:40 PM

Picked up a new cylinder. Beck arnley 072-1936 fits perfect. time to adjust the star wheel and bleed the brakes. Snowing like a mofo so no test drive today.

#329 Datsunthug

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Posted 03 January 2017 - 02:01 PM

Thanks Daniel c for the pinned drum brake adjusting thread!!

#330 Datsunthug

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Posted 05 January 2017 - 05:15 PM

Went for the test drive and brakes feel great. No pulling just solid stops. But NOW something has either got in my gas tank? Water maybe? Fuel filter looks separated cloudy on the bottom with small chunks and the top with clear gas presumably, since gas weighs less than water. I only drove down my block before it started shitting out and barely got home. Pulled a plug and it looks dark and rich/ fouled.
Has anyone had similar leaks of water in their gas tank? We just had a foot of snow fall and the bed was covered in snow for 5 days
Any help would be great. Thanks

#331 Datsunthug

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Posted 05 January 2017 - 05:16 PM

Or can gas gel in cold weather?

#332 wayno

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Posted 05 January 2017 - 05:40 PM

What kind of gas are you using, and how long did it sit in the tank?

I found that when I drove down to LA from Vancouver WA that the first fill up I did in CA I had to re-time my engine, that is some mighty crappy gas they are selling down there.

If I daily drive my vehicle I use normal ethanol type pump gas, if it sits around only getting driven every couple weeks or less I use non-ethanol gas, as that stuff doesn't rust my tank when it sits around for a while, that shitty ethanol gas is hard on metal gas tanks.


 

 


#333 Datsunthug

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Posted 05 January 2017 - 06:36 PM

I put premium 91 octane in it usually from one of the big three stations. It hasn't sat long at all I've been driving it most weekends and put fresh gas in it twice a month

#334 Datsunthug

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Posted 06 January 2017 - 07:30 AM

My finger is pointing to the separated gas/water?B47082D4-5525-4B9E-A6E2-89B0C9BD2A2F_zps

#335 Datsunthug

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Posted 06 January 2017 - 07:31 AM

Dat shitty

#336 banzai510(hainz)

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Posted 06 January 2017 - 07:56 AM

I run 2 filters. 1 in the stock location. stock filter then a in line one also.

 

If gas has water most likely it was raining and the fuel hose is loose in the wheelwell.   Maybe dry some gas dryer and fix the fuel hose to the tank


Throw on some Weber sidedrafts, Rising Sun hood.... call it good

#337 Datsunthug

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Posted 06 January 2017 - 08:36 AM

I'll look at that hainz. I'm thinking that might be the culprit. When I fill the gas tank it wants to leak from the filler hose. You're probably right

#338 banzai510(hainz)

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Posted 06 January 2017 - 08:46 AM

what happens is the clamp gets loose and dirt and water will get passed and run down the hose.

 

Privios owner had this proplem with my 521 and said everytime it rained gas tank gauge would go up(filling up with water)

 

dirt and water will get in and rust tank then plug idle jet with rust particles. So I always swap out the filer on 521s more often. 510s don't have this proplem and rarely change them out as tank is not in the elements


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#339 wayno

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Posted 06 January 2017 - 11:12 AM

That is what happens when this crap gas they sell sits to long, it separates, it can happen fast sometimes.

This fuel was in the tank for less than 6 months in the photo below, the truck had been sitting on the side of the guys house in the grass without being driven, we had to pull the drain plug on the tank and empty it, then fill it with fresh fuel, once that fresh fuel got to the carb it started, you can see that layer of water/alcohol on the bottom of the plastic tub, the engine would not run on that crap.

DSCN1641.jpg

 

DSCN1640.jpg

 

DSCN1639.jpg

The trouble with this for me was that once it happened to my spare tank in my work truck I could not stop it from separating anymore, the tank started to rust on the inside because of that crap fuel, and any fuel I put in it after that was ruined almost right away, I gave up and removed the tank(spare/2nd tank) and now only have my primary tank, that way it only has fresh fuel in it all the time.

If your fuel isn't a rust/orange color then your tank is still good like the fuel from his tank above, but if even fresh fuel is an orange color, your going to have to drop the tank and seal it after cleaning it out, as the rust has started, and there is no stopping it, rust never sleeps, it's doing its thing 24/7.


 

 


#340 banzai510(hainz)

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Posted 06 January 2017 - 11:17 AM

that blue truck still around? such a shame on side of house


Throw on some Weber sidedrafts, Rising Sun hood.... call it good