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SU Air Cleaners for a Ratsun Price!


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#1 zerow

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Posted 12 July 2008 - 09:42 PM

Here is a great Ratsun way to get SU air cleaners at a fraction of the price of the K&N variety.

The K&N 6 inch round filter 2 inches tall currently retails between $40 and $55, depending on where you go. And that is for just one!
Double the price and don't forget that you still have to fabricate a mount to the carb(s) themselves. (K&N not so Datsun Friendly)

Whatever air filters I would have chose, I would have added a nice set of Stub Stacks (for extra air flow) They retail for $32.95 each
Available through Advance Performance Technology of Riverside California. http://www.aptfast.com
http://www.aptfast.c...arge/101221.jpg (NOTE: Two screws per assembly with the K&N filters; the one for the rear carb would be a bish to remove...:eek:)

APT also has the K&N plates for the HS4 carbs (the British equivalent to the 38mm Hitachis) for and additional $35 each.

So, after all is said and done, you have spent well into $150+ for filters and plates (not counting the Stub Stacks, they are for performance) and you've got K&N filters that have multiple screws that are hard to get at, and if you are unfortunate enough to get the wrong size air cleaners (hit the brake booster, etc.), you're stuck with them and still need new ones.

Here is a "how-to" to get a functional part and great looks for a Ratsun price!

I went to my local Volkswagen shop and looked for Empi Air Cleaners. Look for the ones that you want. I wanted the 2 inch tall FILTER. (Empi P/N 8970, the 3 1/2 inch is OVERALL HEIGHT of assembly, VW numbers...:confused:) (http://www.empius.co...og/2011/88.html) You will need two.
Also, and usually in the same area on the shelf, get two additional air cleaners with the same diameter. In this case, I got the 2 1/2 inch tall variety (Empi P/N 8957) (http://www.empius.co...og/2011/88.html), just for the lids. You will see why shortly.

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The first step was to unwrap them, and remove the lids from the ones you "don't want". Don't toss the rest, you'll need one more part from them...

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After taking off the lid, I grabbed my handy 1 1/2" Milwaukee bit for drilling metal, and centered it in the lid. Don't worry about if it gets squirrelly, I found that it gave me an extra 1/32" around the whole thing. Not bad.

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Next, remove the bracket from the bottom of the housing. I wiggled this one a bit and it basically came right off. The second one was not so simple. A 9/64" bit convinced it to change its mind...

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The bottom of the housing is now worthless. Do with it what you wish...

After drilling out the larger intake hole, I used my Stub Stacks as a template and drilled the 5/16" holes for mounting the side bolts (Not really, I used a 1/4" bit and moved it around to get the 5/16") Lazy.

I took the mounting bracket and tilted it so that it fit around the stub stack AND was centered on the air cleaner assembly. I made two marks and drilled my 9/64 holes for my rivets.

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I riveted the mounting bracket to the new "base" and ensured that everything else went together as it should (centered the stub stack (which makes for a good flange), inverted the mounting screw so I could mount the lids, etc.)

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Mounted the finished assembly to the front carb.

Rinse, Lather, Repeat for the second Air Cleaner Assembly.

And after about an hour's worth of work, the assemblies look real damn nice. And with the inverted mounting screw, you can adjust for different height air filters. Bonus! And with the plethora of Volkswagens around, this part is not likely to go out of style anytime soon!!

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After a quick test fit, I can say I was satisfied with the results. I love the look of dual chrome air cleaners, and with this simple fix, I saved about $100 bucks, and got to know my SUs a little better in the process :) They are about 1 1/2"+ away from the brake master cylinder, so there's enough wiggle room. Well worth the price and the time expended was negligible.
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I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#2 Burabuda

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Posted 13 July 2008 - 12:00 AM

they do look good :)

and no jetting to worry about ...

#3 fisch

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Posted 13 July 2008 - 05:45 AM

Nice writeup, great photos! Thanks man!

#4 Guest_jaimesix_*

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Posted 13 July 2008 - 11:23 PM

me an extra 1/32" around the whole thing. Not bad.

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Excellent work Zerow. Congratulations. You have materialized A+ quality finnish on those S/Us, those look incredibly clean , impressive.

I can see how glad you are, see your face on that air filter housing, I know that feeling, a 610 owner enjoying what only the few can....a Datsun thing.

The EMPI parts suit well, and definitely save a lot of money when compared to other S/U made air filter housing and elements.

Can't wait to see your 610 in propia persona. Working on mine too. Soon I will be knocking at your door with my 610....mini meeting in southern california.

Keep cool.

Jaime.______________________________________________________

#5 Phlebmaster

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Posted 14 July 2008 - 07:46 AM

What...no Home Depot?? :lol:

This is great info...thanks!!
Thanks, Aaron
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#6 zerow

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Posted 14 July 2008 - 07:49 AM

Excellent work Zerow. Congratulations. You have materialized A+ quality finnish on those S/Us, those look incredibly clean , impressive.

I can see how glad you are, see your face on that air filter housing, I know that feeling, a 610 owner enjoying what only the few can....a Datsun thing.

The EMPI parts suit well, and definitely save a lot of money when compared to other S/U made air filter housing and elements.

Can't wait to see your 610 in propia persona. Working on mine too. Soon I will be knocking at your door with my 610....mini meeting in southern california.

Keep cool.

Jaime.______________________________________________________


Thanks for the comments, guys. I guess I didn't see the smile on my face as they were going together. I love when something that was a mere thought comes out looking better than what I could have drawn (or even bought). Don't get me wrong, I've seen some nicely refinished SU air filter housings (WICKED JESTER, you know I'm talking about yours...:P) But the cost was what impressed upon me the most. K&N filters are hella-nice, but equally as expensive. Living out away from the city, in the dust and grime of Riverside/Moreno Valley. I don't care if the K&Ns are washable, it's just a hassle I didn't want to deal with. I will be doing a followup to this when I need new filters, I think I know of a set that may just work.
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#7 zerow

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Posted 14 July 2008 - 07:52 AM

What...no Home Depot?? :lol:

This is great info...thanks!!


Only for the Milwaukee bit. And the cool sano-looking hardware on the SUs. That took me two trips to two separate Home Depots. Stainless would have been nice, but that's for another time.
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#8 Comfort Eagle

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Posted 28 May 2009 - 02:48 AM

Maybe I am missing something,but where did you get the sub stacks from? I didn't see it mentioned if you already had them,or bought them at the same time as the filters. What do you do with the valve cover breather? Also what did you do with the float bowl breathers from each carb?

#9 zerow

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Posted 28 May 2009 - 07:36 PM

Maybe I am missing something,but where did you get the sub stacks from? I didn't see it mentioned if you already had them,or bought them at the same time as the filters. What do you do with the valve cover breather? Also what did you do with the float bowl breathers from each carb?


To answer your questions:

1 (third sentence down)

Whatever air filters I would have chose, I would have added a nice set of Stub Stacks (for extra air flow) They retail for $32.95 each
Available through Advance Performance Technology of Riverside California. http://www.aptfast.com
http://www.aptfast.com/Images_Parts/.../2xMSS4_KN.jpg (NOTE: Two screws per assembly with the K&N filters; the one for the rear carb would be a bish to remove...)



2) Valve cover breather is your choice, either use a separate filter (available from K&N or Spectre, not mentioned; or (and I have to post a followup after my engine is actually in the sedan) The filters have a spot that can be removed (see picture 6, on flange with bracket), drilled and added. I plan to place the stub on both filters, just so its balanced.

3) My float bowl breathers (at the time) were unavailable for the photo. I am wanting the SSS style from the Nissan Motorsports catalog, but thats a dream. I have the small stubby looking ones, just not in the photo. They clear the filters. I was going to try something with some stainless braided lines, but that seems to be something for future photos.
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#10 Comfort Eagle

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Posted 14 June 2009 - 04:55 AM

So just so I am clear I need 2 sub stacks for a HS4 carb,correct. They appear to be $27.95 each through APT. I also need these 4 filters(two of each). The web links don't work anymore for me at least. Also I need a valve cover breather,and float bowl breathers. What do these float bowl breathers look like? Pics would help. As far as the part you are talking about on the air filter base you said those can be used as well. Are these the short stub of aluminum coming out of the back plate,or am I missing something?

Unfortunetly I don't have a local VW shop around so I need part number for sure so I can order online. I tried using the stock air box assembly,but that is a no go.

#11 zerow

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Posted 14 June 2009 - 05:16 PM

So just so I am clear I need 2 sub stacks for a HS4 carb,correct. They appear to be $27.95 each through APT. I also need these 4 filters(two of each). The web links don't work anymore for me at least. Also I need a valve cover breather,and float bowl breathers. What do these float bowl breathers look like? Pics would help. As far as the part you are talking about on the air filter base you said those can be used as well. Are these the short stub of aluminum coming out of the back plate,or am I missing something?

Unfortunetly I don't have a local VW shop around so I need part number for sure so I can order online. I tried using the stock air box assembly,but that is a no go.


To answer your questions:

Yes, you will need two stub stacks. I think the website needs updating, they were $32.95 when I bought them.

SAB Imports has a new website: http://sabimports.com/ I suggest calling them direct.

Picture 3 and Picture 5 show the stub on the base that can be removed.

I will post pics of the breather tube on the carburetor later.
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#12 Comfort Eagle

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Posted 05 July 2009 - 08:28 AM

I just finished doing this yesterday afternoon. I will get pics of them soon. I still need to figure out what to do with the bowl vent tubes,but for now I am pretty happy. I just need the radiator back, tune the carbs better,and I should be road ready.

Thanks for the how to it really helped.


Chris

#13 zerow

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Posted 05 July 2009 - 10:59 AM

Chris - is the red hatchback yours? I saw pics of it in the post you had for the air cleaner assembly for sale. If so, nice car!

You are welcome for the writeup. I still owe you some pics of the float bowl breather tubes. Let me get through this weekend and I will get some good shots for you.
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#14 Comfort Eagle

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Posted 05 July 2009 - 04:08 PM

Yes the hatchback is mine. It is really orange in real life even though the color code says persimmon red(110). I call it orange,and so does everyone else,but maybe the years have changed it from its red to an orange color. It is stock factory paint. Pics of the bowl breathers would be great. I appreciate it.


Chris

#15 Comfort Eagle

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Posted 10 July 2009 - 02:29 AM

Chris - is the red hatchback yours? I saw pics of it in the post you had for the air cleaner assembly for sale. If so, nice car!

You are welcome for the writeup. I still owe you some pics of the float bowl breather tubes. Let me get through this weekend and I will get some good shots for you.


Any chance you have pics of the breathers yet?

#16 zerow

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Posted 12 July 2009 - 07:46 PM

Any chance you have pics of the breathers yet?


Sorry about the delay:

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I might have found something better, but this is what I am running for now.
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#17 Comfort Eagle

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Posted 12 July 2009 - 11:47 PM

You know what? My carbs have those already,and they also have a maybe 6" piece of vacuum line/fuel line coming of that barb that did go to the stock SSS air box base. I have just the lines coming off them and dangling up in the air. I am not sure this is the best thing to do with them,but so far it has proven fine,and I get no fuel coming out of them,YET. Thanks for the pic. You plan on just leaving the barb fitting open to atmosphere,or do you have other plans for it.

Chris

#18 zerow

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Posted 13 July 2009 - 07:52 PM

You know what? My carbs have those already,and they also have a maybe 6" piece of vacuum line/fuel line coming of that barb that did go to the stock SSS air box base. I have just the lines coming off them and dangling up in the air. I am not sure this is the best thing to do with them,but so far it has proven fine,and I get no fuel coming out of them,YET. Thanks for the pic. You plan on just leaving the barb fitting open to atmosphere,or do you have other plans for it.

Chris


I would worry about them going back to the airbox. The airbox is directly above the exhaust manifold. High velocity air and fuel above a heat source is not a combination I choose to have. I will be running a piece of hose down past the frame, just in case. put a piece of coat hanger wire in them to bend them so that they stay in place. I have another option that I will be working on very soon, and posting pics. Found them at the J/Y, just ran into a snafu that needs to be worked through first...
Posted Image

I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#19 zerow

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Posted 22 October 2009 - 10:21 AM

After some debate, the wingnut decision has been handled:

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For the sake of love, I decided on OEM Datsun downdraft air cleaner wingnuts. I had to modify my angled mounting bracket inside the carb to accept the metric threaded bolt (bolt that originally comes with the air cleaners is standard 1/4 - 20) , and I tightened a nut on it to keep the whole thing in place.

The original wingnut from my downdraft carb would have gone the way of the trashbin, but she has been with the car her whole life, I couldn't resist. The other was a J/Y find from a 210 I came across. New life for you, little wingnut...

Here are some other pics of the completed carbs, with new stainless fuel inlet lines:

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What do you think...??
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I saw three of these parked outside the local Starbucks this morning, which tells me only one thing. There's too many self indulgent wieners in this city with too much bloody money. Now, if I was driving a 1973 610 four-door...
You would not be a self indulgent wiener, sir. You'd be a connoisseur.
Precisely. Champagne would fall from the heavens. Doors would open. Velvet ropes would part.
Drive a DATSUN, Then Decide.

My Project
How To: SU Air Cleaners
How To: L4N71B into Early 10 Series
How To: 610 Heater Box Rebuild

#20 WICKED JESTER

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Posted 22 October 2009 - 04:57 PM

william those carbs are sweet i really like how you did the fuel lines :thumbsup: