Build 1st FJ40, '76 - SMOKEY - Puttin’ her Back Together

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No offense , but rigging two units together will require a lot bigger pipe fittings to keep the cfm up to par . Blasters , unless you use a very small air jet will require more cfm than you can shove through those small pipes . Pressure pot outdoor types require double the cfm over most cabinet units .

Vae-

Unfortunately , compressors are like welders - buy the biggest you can afford . I'd almost shy away from the newer ones as they just aren't as reliable as older industrial units but if you must the 7.5hp is closer to what I have . CFM is the devil here , you'll need around 23-28cfm for blasting and other duties . The 5hp unit at that draw rate will run until it overheats the oil and live a short life . If you are stuck with single phase 220v then you are limited - just watched a VR4 industrial 50cfm sell for only $1500 used in excellent condition , but the 25hp motor would have spun most meters off the wall when running . Just to compare , a buddy has one of the newer 5hp units like you mention , his runs so hot and takes much longer to outrun his work he changes oil once a month when working on projects . I change oil once a year and run mine some days for 10+hrs continuously , no worries . Also , be aware that most of these new high-rpm units (3450) are extremely loud , I prefer the old style 1725 rpm low speed big-bore pumps . Just less wear and tear over time .

A good unit really should last most folks a lifetime if it's a quality one and keep up with whatever work needs done . Buy cheap , buy again and again ....

Sarge
 
Make sure the tank has a clover leaf on it with the initial asme that means the tank was welded per american society of mechanical engineers standards. Dont buy any air compressor without the asme and clover leaf stamped on the tank.
 
Sounds like you have finally gotten past the stage you will need the Telescoping Gauge set I sent as a loaner--Great!
I have a water separator you might be able to use on the blast cab air supply-I'll try to get some pics of it in the next couple of days-maybe you can use-$20 plus ship
Gary
 
sggoat said:
Sounds like you have finally gotten past the stage you will need the Telescoping Gauge set I sent as a loaner--Great!
I have a water separator you might be able to use on the blast cab air supply-I'll try to get some pics of it in the next couple of days-maybe you can use-$20 plus ship
Gary
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Gary, yes, still waiting on the engine to be returned. He's had it several weeks now, and says he is getting close. When I reassemble I will need those gauges you sent. I have not forgotten (though this is a good reminder). Have you needed them?

Yes, let me see the pics of the water separator. See my next post.
 
Ok, so about to take the plunge and buy a Quincy QT 7.5hp 80 gallon air compressor. I went online and researched (and researched...) and came down to Ingersoll Rand and Quincy. I just like Quincy better.

I found a local dealer, and got a great quote from him. Similar in price to the aircompressorsdirect.com website, but much better service, and the things like the switch, starter, and filters are much better quality than those ACD is putting on their units. I went by the dealer and looked up close at the Quincy units - really high quality.

So, I just need to talk him down a little bit, and then take the plunge. Until then, it's back to wire wheeling.
 
Vae Victus said:
Ok, so about to take the plunge and buy a Quincy QT 7.5hp 80 gallon air compressor. I went online and researched (and researched...) and came down to Ingersoll Rand and Quincy. I just like Quincy better.

I found a local dealer, and got a great quote from him. Similar in price to the aircompressorsdirect.com website, but much better service, and the things like the switch, starter, and filters are much better quality than those ACD is putting on their units. I went by the dealer and looked up close at the Quincy units - really high quality.

So, I just need to talk him down a little bit, and then take the plunge. Until then, it's back to wire wheeling.
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Yea, could have used the gauges seriously when the head gasket blew, but was able to make do with some other calipers I had--fortunately, cylinders were ok. New head is on and after a new water pump/OEM thermostat and a cleaned radiator, the rig is running fine again. hope those gauges help you out.
I would vote the Quincy also--Ingersoll-R has a lot of problems with oiling systems and blowout of same--
I don't have pics of the water sep tonight, but can get some tomorrow--will send asap
Gary
 
sggoat said:
Yea, could have used the gauges seriously when the head gasket blew, but was able to make do with some other calipers I had--fortunately, cylinders were ok. New head is on and after a new water pump/OEM thermostat and a cleaned radiator, the rig is running fine again. hope those gauges help you out.
I would vote the Quincy also--Ingersoll-R has a lot of problems with oiling systems and blowout of same--
I don't have pics of the water sep tonight, but can get some tomorrow--will send asap
Gary
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Sorry - I was unaware you might have needed them. I could have shipped them back. Engine is "any day now" however.


...via IH8MUD app
 
Vae Victus said:
Sorry - I was unaware you might have needed them. I could have shipped them back. Engine is "any day now" however.


...via IH8MUD app
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No need now I made other measurements that worked good--- use them as you need, send back whenever you're done.
As for the water separator--sorry, didn't get pics today--had some other issues at the daughter's house. Will send as soon as I can.
Gary
 
Pulled the trigger on a Quincy QT 7.5–80 compressor yesterday. It was a big expense, but I know I'll use it for many many years to come in my shop, once I get that built.

For now is going to live in my garage, much to the chagrin of my wife I'm sure.

I have put off doing much work on cleaning and painting parts in recent weeks, mostly because I've been distracted and busy with work stuff, but also to make a decision on this compressor to get the sandblasting cabinet working and I am buying from my friend.

The great news is is that this sandblasting cabinet works really really well, and the pressure pot it's with it works well too. I had to buy about $400 worth of parts to get it to work but have proved with my small compressor that it works very well. It does run out of air after about five seconds of blasting but that's what the Quincy is for.
 
I'll be more than happy to help you break it in. I'm basically done with blasting parts for this build but you can't have too much to blast...
 
Rainman said:
I'll be more than happy to help you break it in. I'm basically done with blasting parts for this build but you can't have too much to blast...
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Well, you can't blast Heep parts in it - it's not warranted for that!


Weber Sarge said:
Just ran the snot out of mine again today , which reminds me to order a carbide nozzle as I'm on the last one for the Scat gun....sigh .
You'll never regret the Quincy if it's half as good as the old ones .
Sarge
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I've got my very first nozzle. $36 carbide 1/8" from Rayzist. I assume I could find a cheaper one if I searched elsewhere?

I read that 7.5 horsepower compressors are the worst HP to size ratio and they therefore work the hardest. They run higher RPMs that the 5 or 10 HP - well, except the high end $5000 Quincy model that runs something like 600 rpm. In cheaper brands, they are basically the same size as a 5 HP, but they just run them faster.

I'm sure this Quincy IS half as good as the old ones!



...via IH8MUD app
 
I've been using the Scat gun setup from TP Tools - http://www.tptools.com/Nozzles-Air-Jets-Gaskets.html , even with case-hardened steel nozzles the glass beads destroy them within 2hrs of blast time - carbide is the only way to go .
Why are you using the 1/8" nozzle ?

HP ratings are all skewed these days - mine has an old school 5hp that never blinks - 1750 rpm motor so the pump is turning around 800rpm if I had to guess . Just finished flushing out the oil pan again - now it's getting synthetic oil to prevent sludge buildup as I run it pretty hard when pot blasting outside , sometimes for 6+hrs at a time . I almost bought a VR4 Quincy pump awhile back off Craigslist that required a 25hp 3ph motor to turn it - thought about an inline 6 Ford and just decided it wasn't worth the effort to build a trailer unit . Can't remember the cfm but it was crazy for a recip pump , the thing was huge anyway . Guy sold it for $800 w/intercooler piping and regulator heads intact - those are worth the price alone . Stuff does come up buy you just have to be ready for it ...and have a trailer .
Sarge
 
Weber Sarge said:
I've been using the Scat gun setup from TP Tools - http://www.tptools.com/Nozzles-Air-Jets-Gaskets.html , even with case-hardened steel nozzles the glass beads destroy them within 2hrs of blast time - carbide is the only way to go .
Why are you using the 1/8" nozzle ?

HP ratings are all skewed these days - mine has an old school 5hp that never blinks - 1750 rpm motor so the pump is turning around 800rpm if I had to guess . Just finished flushing out the oil pan again - now it's getting synthetic oil to prevent sludge buildup as I run it pretty hard when pot blasting outside , sometimes for 6+hrs at a time . I almost bought a VR4 Quincy pump awhile back off Craigslist that required a 25hp 3ph motor to turn it - thought about an inline 6 Ford and just decided it wasn't worth the effort to build a trailer unit . Can't remember the cfm but it was crazy for a recip pump , the thing was huge anyway . Guy sold it for $800 w/intercooler piping and regulator heads intact - those are worth the price alone . Stuff does come up buy you just have to be ready for it ...and have a trailer .
Sarge
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Using 1/8" nozzle because that's all Rayzist had (they specialize in etching glass for the trophy/awards industry), and I was getting the other parts for the blast cabinet directly from them. I figured I'd get a larger nozzle once I got it running.

The cabinet has a heavy duty pedal assy to run the nozzle, so I don't have a deadman nozzle for external blasting right now.

Anything > 7.5hp requires 3-phase power here. 240-single phase is best I can do residential.

I think the 7.5 hp from Quincy runs at 1350 rpm.
 
New piece of kit arrived today. New gas tank compliments of Beno (and VISA).

Beno has a new home now - nice going Beno. He moves and all his customers go with him. Brilliant!


...via IH8MUD app

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And - new brake booster arrived today. Same size and shape of the no longer available OEM. Didn't unbox today. Pics and specs tomorrow. This is a big deal, as these are hard to come by (I had actually given up).

I'm so pleased that this $200, $50 part has a split in the boot. Wonder how hard it'll be to get a new one from Centric. :mad:

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