Square Air Filter for Weber? (was "square breather?")

[basic instinct]

weber?. i want to trash all that stock tentacle lamer i got.


i have this. http://www.midlifeclassics.com/images/opel1/o1engl.jpg

but want this square one. what part i need?


http://carphotos.cardomain.com/ride_...0010_large.jpg

[grslightng02]

You can get the square air filter housing for a Weber Carb from OpelJim or OpelGTSource. Keep in mind however that the original set up is a cool air intake. The cooler the air the better the performance. You have a silver adapter piece that goes between the carb and the original air filter intake. That piece by itself is worth money!

1)The square chrome air filter housing may be good for areas with cooler weather. I would suggest in using a heat shield between the weber carb and square chrome filter.

2)The original set up you have, but with the K&N filter will improve performance.

3)Or you can go with the Snorkel kit for the Weber carb and attach it to either the original filter housing, or buy one of the modern larger K&N filters.

Choices 2 & 3 may give you better performance if you live in an area where summer heat goes past 80-90F.

[kwilford]

Moderator's Note: Thread moved from the "GT" Forum, which is reserved for non-technical questions specifically related to the GT model, to the "Aftermarket Down-draft carbs" Forum. In the future, please do a bit of a search before starting a new thread, and when you do, please start it in the appropriate Forum. Did I already mention this humorous yet insightful guide to posting on this Forum? Please watch the link at
Hi newbie, you want to post on a forum? this is what you need to know!

and FWIW, what you have for an air cleaner assembly is actually better than what you want. The suggestions by "grslightng02" are spot on.

[ungermm]

Originally Posted by basic instinct but want this square one. what part i need?

You can go with a Redline Complete Air Cleaner Assembly found here which should include all the parts you need.

Weber Parts

Either part #99217.331 (lower profile, like you want) or #99217.332S (higher profile) should fit your application. At $19.99 and $10 ship/handling, this is a decent price or you can do a little more shopping.

Jerry

PS, as stated by Neil..you already have the weber to air cleaner adapter which will allow you to use even other styles of air cleaner kits. However, it's use isn't necessary for the above kits. You could always sell this piece to someone that is looking for one. It would likely fetch the cost of your new air cleaner kit.

PSS, I'm just wondering how you current setup is attached. Or is it? That adapter isn't meant for the original snorkel setup.

[alolmo]

Yes, or you can get it from OGTS for about the same price than RedLines and help keep them in business.

[basic instinct]

thanks guys.

[TheLostOpel]

I replaced my original solex carb with a 32/36 in my 70 Opel GT. I am considering replacing the original air filter with a square filter. Before I do so I would like to know if there are any performance benefits? And where can I find instructions for installing the square filter to the carb? lostopel

[alolmo]

Rob the difference is noticeable, I can't put it in hp but I have to say that the car seems to reach top speed easier on the freeway without sacrificing gas-millage. The installation can't be any easier, remove the old set up and bolt in the new air filter, it should come complete ready to bolt.
\Al

[BQS4]

Originally Posted by TheLostOpel I replaced my original solex carb with a 32/36 in my 70 Opel GT. I am considering replacing the original air filter with a square filter. Before I do so I would like to know if there are any performance benefits? And where can I find instructions for installing the square filter to the carb? lostopel

There's not much to it. The square filter assembly will come with a base that is already cut out for the weber, and 4 holes drilled to attach the base to the weber. the weber will already have the same 4 holes, only threaded. As far as performance gainGTs are bad for underhood heat, so a CAI would be a good thing. CAI is cold air induction, which is what the stock system is. You can make a better one using an adaptor from one of the places that sells webers, then get creative for hosing (clothes dryer tubing, metal tubing, PVC, etc) and attacha reuseable K&N filter on the end.

[TheLostOpel]

Originally Posted by BQS4 There's not much to it. The square filter assembly will come with a base that is already cut out for the weber, and 4 holes drilled to attach the base to the weber. the weber will already have the same 4 holes, only threaded. As far as performance gainGTs are bad for underhood heat, so a CAI would be a good thing. CAI is cold air induction, which is what the stock system is. You can make a better one using an adaptor from one of the places that sells webers, then get creative for hosing (clothes dryer tubing, metal tubing, PVC, etc) and attacha reuseable K&N filter on the end.

you are right, it does not look like there is much to the installation, however got a bit confused by the metal brackets included with the filter and gasket. Are they necessary or required?

[BQS4]

Originally Posted by TheLostOpel you are right, it does not look like there is much to the installation, however got a bit confused by the metal brackets included with the filter and gasket. Are they necessary or required?

The brackets are actually clamps. Once the base is secured, you sandwich the filter in between the top and bottom plates, then the clamps come in from the sides to hold the whole thing to the bottom. There are grooves in the top and bottom platesthat the clamps click into to keep them from backing off.

[wrench459]

Originally Posted by TheLostOpel I replaced my original solex carb with a 32/36 in my 70 Opel GT. I am considering replacing the original air filter with a square filter. Before I do so I would like to know if there are any performance benefits?

Keep the CAI.
The cooler the air charge temp's the more power you'll make.

[TheLostOpel]

Thanks for the information, I will make the switch.

[grslightng02]

Originally Posted by grslightng02 2)Keep The original set up you have, but with the K&N filter will improve performance. 3)Or you can go with the Snorkel kit for the Weber carb and attach it to either the original filter housing, or buy one of the modern larger K&N filters. Choices 2 & 3 may give you better performance if you live in an area where summer heat goes past 80-90F.

Cool air induction..... keep the original snorkel kit and buy a K&N Filter, unless you live in a very cool area.

[wrench459]

I like the 5.250 layout better than the stock Opel.
It gives you more options.

[bigjim5551212]

we have those as well. thats the 1 5/8 tall one in the pic. See if you can use a 2.5" filter, it will give more power