1971 Datsun 521

[Eomund]

They have cleanable filters too. I'm running one and I have a spare ready to swap if one gets clogged.

 

Sooooo jealous of your bumpers.

[datson4life]

thats what i had, but i left my spares at home so i got stuck in a town 15 miles away, now i have a piece of piping that i can run straight to bypass filter (just in case)

 

They have cleanable filters too. I'm running one and I have a spare ready to swap if one gets clogged.

Sooooo jealous of your bumpers.

[Z chopper]

thats what i had, but i left my spares at home so i got stuck in a town 15 miles away, now i have a piece of piping that i can run straight to bypass filter (just in case)

 

lesson learned to keep a spare in the glove box

[oldskoolvws]

thats what i had, but i left my spares at home so i got stuck in a town 15 miles away, now i have a piece of piping that i can run straight to bypass filter (just in case)

 

Why a pipe instead of a filter?

[Donedreamin]

So i changed my fuel filter today and unfortunately it made no difference. 
When i pull the choke it revs up fine. 
When i disengage the choke, and apply any throttle it bogs right out!
I have been doing some research, and this site has been extremely useful, all the manuals in PDFs.
http://www.datsun510.com/manuals/

 

 

I want to believe it's the fuel pump, i'll start by diagnosing that than move onto the carb.  

[Donedreamin]

Ill get some more photos this weekend 

[banzai510(hainz)]

FUEL PUMP? If you choke its its fine. Why then would it be the pump?

take the output end off point in a safe dircetion ans start the truck if lots of gas shoots out. I highly dough thats it. make sure the hose is not cracked before the fule pump(can suck air instead of gas making the pump look bad)

 

if you changed the filter after the dirt went thru its too late.

 

521 need the filter changed more often as the tank is exposed to the eliments and water can run down the filler tube in the wheelwell.

 

If carb is plugg the stock carb is a MOFO to take apart. I wont do it myself. I have a stack a Weber aDGVs to install and adapters/ You might not have this option.

 

Only other thing I can think of most like its could be the ignition/timming (was anything swapped by you?) hope not putting a GO FASTER coil in there. But if nothing was changed by you on that end then I still think carb ingestion.

 

 

got a timming light?

is this charging OK?

valve last set?

carb bolts and intake bolts tight?

[Donedreamin]

I pulled the carb tonight, going to do a mild rebuild.
I have a timing light, alternator and battery are new, carb bolts and intake bolts are tight
I don't have a valve last set?

Anyways, she's down for maintenance but here's some pictures to hold over 

 

[Eomund]

Is that across the street of some sort of UN building, or an IHOP?

 

My first inclination is a possible jetting issue by the way you describe it, but it's difficult to say without diagnosing it further. Shoulda checked the plugs to see if it was running rich, lean or getting a good mixture. It's like taking it's temperature and is usually the first thing you want to do. You don't want to just throw parts at it if you can help it, especially all at once. If it gets worse or better, it makes it difficult to figure out, not only what the original problem was, but also any possible subsiquesnt issues if any new problems arise.

 

By the by, are you running the stock Hitachi carb? Suckers are a bit of a bitch IMO, but if you're set on rebuilding it, the kits are pretty cheap.

[Donedreamin]

I pulled the carb, cleaned the jets with carb cleaner and compressed air.. voila she runs like a champ!
Today was beautiful out, we have a clover leafs on ramp/off ramp heading out to the highway and i did about 5 laps, good tires, slightly lowered and everything else stock this thing was an absolute blast to drive. 

I'm prepping for a 6 hour drive, repaired the wheel bearing, and installed a temporary sound system and i'm after today's beating i'm confident she can take it. 

I also took some photos..

 

 

(just surface rust)

 

 

 

[banzai510(hainz)]

I love it

[Phixius]

Can you still pop your hood with those speakers in there?

[Z chopper]

interesting exhaust set up coming up through the bed instead of under it.

[mrbigtanker]

i like it.

[Donedreamin]

interesting exhaust set up coming up through the bed instead of under it.

 

Hahahahhahahha. I just parted out one of my cars and was transporting the exhaust, I certainly won't be running my exhaust through the bed of the truck.

[laotsu]

I like the peeling orange with bamboo underneath.

[RadioRedline]

Hey DD,

 

If you need stereo shiznit, let me know, I work @ Visions PT. I can give you my price because I and the Manager are Datsun peeps!!

 

Looks good tho. 

 

Radio

[oldskoolvws]

I want stereo stuff.

[mrbigtanker]

I want stereo stuff.

alpine 7803s,cleanest deck alpine ever made.

[Donedreamin]

The local police happen to think differently.. 

[Donedreamin]

Hey DD,

 

If you need stereo shiznit, let me know, I work @ Visions PT. I can give you my price because I and the Manager are Datsun peeps!!

 

Looks good tho. 

 

Radio

Thanks Radio, we'll keep in touch dude

[Eomund]

The local police happen to think differently.. 

 

Wait, you're car's a '71 and they inspected it? Isn't that a little illegal on their part? unless you're really loud, anything is legal for the most part.

[Donedreamin]

It`s by no means a straight pipe but there is some pinhole leaks in the exhaust.

Does anyone know what exactly is needed to upgrade to webers?
Adapter plate? manifold? 

[Phixius]

dont need a manifold. unless you want sidedrafts.

 

but, for downdraft, yes adapter plate for the weber.  Or if you want to put a four barrel carb on an a 4cly L motor, you will need a different manifold.  (ive got one) kinda like this one

 

http://www.summitracing.com/parts/OFY-6262DP/

 

 

adapter plate for the 2 barrel weber...

 

 

(stole this pic from one of qwik510's ads)

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and ofcourse a weber, usually a 32/36.

 

both easy to come by...

[Donedreamin]

 

 

 

 

 

 

 

 

So, the last three photos. 

I was just wondering if there's an oem glovebox knob replacement?
What can i do temporarily to fill the cracks? black silicon or something?
And does anyone know where i can buy the felt like material used to guide the window?

Thanks, i was trying different things with the camera tonight, enjoy!