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 Post subject: 1975 Datsun 620 Pickup Truck
PostPosted: Sat Jun 06, 2009 7:14 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
I just bought a 620 Datsun truck and was searching for information on brake conversions and transmission swaps.

Currently it has:
4 speed tranny (feels very sloppy) to a L20B
Drum brakes all around

I'd like to convert at least the front brakes to disc. I've been searching the forum but haven't found any information about this topic. I'd like to find out what I parts I need for a conversion. I've seen rotors on ebay, but wanted to know more about the calipers and other parts I would be needing.

I also want to switch to a 5 speed trans. What would be a good donor datsun/nissan to look for a transmission?

Any help would be much appreciated.


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 Post subject: Re: 1975 Datsun 620 Pickup Truck
PostPosted: Sat Jun 06, 2009 8:00 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
Posts: 8459
Location: Fort Worth, TX, USA
hawaii_se-r wrote:
I'd like to convert at least the front brakes to disc. I've been searching the forum but haven't found any information about this topic. I'd like to find out what I parts I need for a conversion.


Easiest way to go about it is to find a '78-79 in the junkyard and take all the front end stuff off of it. All the later 620s had disc brakes in the front.

Quote:
I also want to switch to a 5 speed trans. What would be a good donor datsun/nissan to look for a transmission?


Same thing. :wink:

The late 620 5spd is one of the best transmissions Datsun ever made. :tu:

And if you get it from a 620, it should be basically a bolt-in (assuming you get the mount and driveshaft too).


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 Post subject: Any thoughts or concerns with something like this?
PostPosted: Sun Jun 07, 2009 3:00 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
http://cgi.ebay.com/ebaymotors/Datsun-3 ... 500wt_1219

What would be of concerns with doing something like this to my truck? Just wanted to know what the forum of JNC would think about this.


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 Post subject: Re: Any thoughts or concerns with something like this?
PostPosted: Sun Jun 07, 2009 3:12 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
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Location: Fort Worth, TX, USA
hawaii_se-r wrote:
What would be of concerns with doing something like this to my truck?


None at all Beebani's kit is well engineered and works very well. And gets you bigger brakes than stock 620 stuff, as well as service parts that are easier to find down the road. If you don't mind spending the cash, I highly recommend it. :tu:


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 Post subject: Cooling / Fan
PostPosted: Mon Jun 22, 2009 11:27 am 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
My original fan is broken and I don't have the original fan shroud either. Should I shop out a fan and shroud, or should I just go with an electric fan setup?

Any recommendations? or draw backs on doing one or the other?


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 Post subject:
PostPosted: Mon Jun 22, 2009 12:31 pm 
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Joined: Sat Jan 31, 2009 3:14 am
Posts: 357
Location: LaPine, or
just go electric with a thermo controler i did that in my 610 and never looked back the stock fan wasent enough when it was put in by datsun now 30+ years later its really not enough

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Sometimes it starts after I've lost my mind battling with it. It seems to feed on sadness...


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 Post subject:
PostPosted: Mon Jun 22, 2009 7:12 pm 
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Joined: Mon Dec 31, 2007 1:21 pm
Posts: 1264
Location: Ohio
Any pics of the truck? :mrgreen:

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- '71 Datsun 240z.....L28ET here we come


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 Post subject: Pics
PostPosted: Tue Jun 23, 2009 5:49 am 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
I'll get them up shortly!


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 Post subject:
PostPosted: Wed Jun 24, 2009 8:12 am 

Joined: Sun Feb 25, 2007 10:28 am
Posts: 101
Location: San diegoCa.
Pix or you dont own it :lol: JK my friend look forward to this build.

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64 L 320 - 72 510 wagon - 74 PL 620 - 94 D 21 [Hardbody]
Image


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 Post subject: My truck
PostPosted: Mon Jul 06, 2009 11:24 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
Image

I'm not a fan of the Titan rims it came with, but it will do for now.


Last edited by hawaii_620 on Wed Feb 02, 2011 5:24 am, edited 2 times in total.

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 Post subject:
PostPosted: Tue Jul 07, 2009 1:17 am 
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Joined: Fri Mar 02, 2007 6:19 pm
Posts: 148
Location: Pacific
Cool P/U!! Looks like a great one to start with, especially in HI :tu:


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 Post subject:
PostPosted: Tue Jul 07, 2009 3:02 am 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
Yup, being in Hawaii, you can't just find a good deal and drive over to the next state to pick it up. It has it's fair share of work to be done to it, but over all I think it has a sound foundation.

First priority is to upgrade the front brakes to discs. The current brakes are so bad that it takes about car lengths to come to a stop.


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 Post subject:
PostPosted: Tue Jul 07, 2009 7:42 am 
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Joined: Mon Jul 06, 2009 3:52 pm
Posts: 78
Location: Grand Rapids,MI
i actualy like it with the titan wheels, and just kinda think its funny that they even fit. looks like a cool project

hopefully you can find something to do with the brakes


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 Post subject:
PostPosted: Tue Jul 07, 2009 1:52 pm 

Joined: Wed Jun 24, 2009 4:37 pm
Posts: 595
Location: Pawtucket, Rhode Island
Nice truck. Those look like Armada Wheels not Titan wheels. Correct me if I'm wrong.

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 Post subject: Front disc brake conversion done... still needs back brakes
PostPosted: Fri Oct 16, 2009 9:45 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
I finally got around to doing my front disc brake conversion. Parts bolted up smoothly. I need to get a new brake booster, I can hear it hissing at me when the pedal is down.

Truck at least stops now, not as responsive as I would like it to be, but it's much better. I suppose it's because I haven't yet rebuilt the back drums yet, so I'm assuming even if I was getting 100% stopping power out of my front brakes, it probably only accounts for 70% or so of my over all braking power.

Any suggestions on how to get better braking power other than what I have planned?


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 Post subject: Re: Any thoughts or concerns with something like this?
PostPosted: Fri Oct 16, 2009 9:48 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
datsunfreak wrote:
hawaii_se-r wrote:
What would be of concerns with doing something like this to my truck?


None at all Beebani's kit is well engineered and works very well. And gets you bigger brakes than stock 620 stuff, as well as service parts that are easier to find down the road. If you don't mind spending the cash, I highly recommend it. :tu:


Great parts from Beebani. Bolted up relatively easy. I'd recommend it to anyone else thinking about buying the brackets from him on ebay. :tu:


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 Post subject: Brake Booster
PostPosted: Mon Oct 19, 2009 12:39 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
Does anyone know if a 280z brake booster would fit on a 620? I used a 280 master cylinder for my disc brake conversion. But was wondering if the brake booster could be switched out too.

Thanks,
Kyle


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 Post subject: Re: Brake Booster
PostPosted: Mon Oct 19, 2009 2:45 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
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Location: Fort Worth, TX, USA
hawaii_se-r wrote:
Does anyone know if a 280z brake booster would fit on a 620? I used a 280 master cylinder for my disc brake conversion. But was wondering if the brake booster could be switched out too.


When it comes to Datsuns a booster is pretty much a booster.

But the Z booster is usually larger diameter than the B210/truck booster. As long as you have room for a booster that is 2-3" wider in diameter, it should bolt up fine.


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 Post subject: Thanks Datsun Freak
PostPosted: Mon Oct 26, 2009 7:01 pm 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
Thanks Datsun Freak!

Now I just have to search out the parts. :) :tu:


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 Post subject: Fan Clutch
PostPosted: Mon Nov 30, 2009 8:18 am 
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Joined: Fri Jul 18, 2008 4:37 am
Posts: 41
Location: Hawaii
My fan on my 620 truck is cracked and missing a fan blade. I'm having a hard time finding a used/new one. I bought a used fan from an early model 240z, but it won't fit the 620 fan clutch. (I should have did more research before I bought it. $15 is $15.)

If I got a 240z fan clutch, would that just bolt right up to the existing water pump? It's a L20 motor.

Or could I just by a new water pump for a 240z with a fan clutch on it and replace the whole thing? are they compatible?

Thanks Datsun peeps!


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