SU air filters

[astrohog]

Just got my 1971 240Z a few weeks ago and have been getting her in "reliable drivable" condition. So far I have a new exhaust, new tires, plugs, wires, points, rotor, cap, oil filter and oil change, new battery and terminals, alternator belt and rear brake shoes. The car is feeling much tighter and reliable, I wouldn't heesitate to take her on a long trip (with my tool box, of course! )

one problem I am having is the air filter foam element. my car came with the Weiand (sp?) carb covers. The carbs keep "sucking in" the foam element under hard exceleration (spirited driving:laugh: ). Upon closer inspection, the foam element is "eggshell" foam that the PO cut to size. I do not think this is the ideal density of foam for this application. I do have the plastic inner "basket" that is supposed to keep the foam away from the carb mouth, but with this foam it is not working.

Finally, my question: Is there anywhere I can obtain the right foam for these filters? I do have the stock airbox, would I be better off using the stock one?

I have heard that the stock box is adequate and well suited for this car, but it just seems so big and clunky, and the Weiand sure looks cool.

Any advice you guys can give would be much appreciated!!

Regards,

Jeff

[hls30.com]

Most foam filters are less efficient than their paper counterparts-too much restriction not enough filtering-your results show the restriction problem. To keep the foam in place cut some hardware cloth and form it to the right contour and place it under the foam to support it. I would do that and then do something really crazy, call Weiand and KNN and see if they have a paper or propper foam filter to fit your application.

Will

[astrohog]

Will, I have searched the internet and not been able to even find mention the carb covers I have. I had new tires installed today and the tire guys were laughing as the old tires had tubes in them!! I feel like I stole this car as it was just a driver for all three previous owners, but everything on it is still very stock!!

I still welcome any input on this, but I think I will just clean up the stock airbox and get a K & N filter element for it. Seems to be the popular choice, and still maintains the stock beauty of this car!

Jeff

[EScanlon]

Quick question, what shape were the old tires in? Were they the original tires? If so, there's a member that may be interested in them. See if you can find out.

E

[hls30.com]

Will, I have searched the internet and not been able to even find mention the carb covers I have. I had new tires installed today and the tire guys were laughing as the old tires had tubes in them!! I feel like I stole this car as it was just a driver for all three previous owners, but everything on it is still very stock!!

I still welcome any input on this, but I think I will just clean up the stock airbox and get a K & N filter element for it. Seems to be the popular choice, and still maintains the stock beauty of this car!

Jeff

Have you contacted Weiland directly? They could have a box in the store room that...

Will

[astrohog]

E, My Z has 102,000 orig. miles. I doubt if those were the original tires. They were in very bad shape and that is why I changed them. In fact, two of them had cracked so badly that they actually shed a 4" X 6" "patch" of the tread, leaving steel belts sticking out!!

Jeff

[beandip]

I went with the K & N filter element and kept the stock air box. I did find that the element is just slightly thicker than the paper type and the cover lacks about 3/16 " from completely sealing all around. The element seals inside the air box so no crud gets into he carbs . I bought mine from Summit but you may find another vendor for less money . I have been running with K&N filters for many years in my trucks and cars . Gary

[dzrt1st]

My car has the round Weiand air cleaners on it. I was able to find new elements (Longflo) for them at http://www.victoriabritish.com/icatalog/t6/0026.html

They fit perfectly.

The Black Dragon catalog only shows the oval ones.

Todd

[astrohog]

dzrt1st - Very cool! I have the oval ones, but those look like what I need! Thanks sooo much!

Regards,

Jeff

[Carl Beck]

Hi Jeff:

The looks of the Weland air cleaners - cost you performance. They do not have enough room for the air horns that the SU's need for proper operation. You are far better off with the stock air cleaner, which does have the air horns built into the base.

Go or Show.... your choice....

FWIW,

Carl B.

[astrohog]

Carl, After fiddling with these things, I have decided to go back to the stock air filter box. I just can't find the threaded studs that have a female "coupler" to receive the two cover bolts. Any ideas?? anybody??

Thanks,

Astrohog

[jmark]

Carl, After fiddling with these things, I have decided to go back to the stock air filter box. I just can't find the threaded studs that have a female "coupler" to receive the two cover bolts. Any ideas?? anybody??

Thanks,

Astrohog

Astrohog, I have a K & N filter used that fits the OEM box.

http://www.classiczcars.com/classifieds/showproduct.php?product=1467

I think I may have a set of the cover bolts I'd be willing to sell as well. PM or email if you interested. Thanks.