Would like the experts to inform us on the differences of assembly line air filters.. The C7SF FA 41 and the C8AF FA 50
I have had both made and feel we should inform the collectors and enthusiast that don't know the differences.
chris
This applies to 1968s...
The FA 50 is taller.
Both the FA 50 and the more common FA 41 were used on GT500 KRs depending on the build date.
Hope that helps
Fa 50 was also used on 69 gt350 boss 351 71 429cj scj mustang as well as many other cars and the filters chris made were of my assembly line wire type mesh NOT the service replacement round hole type mesh. fa41 was 67 and up mostly big block and performance cars 390 gt 428 cj scj boss 302 -429 etc. This is a much needed concours part and the assembly line type were never serviced and nos autolite filters are rare and expensive and have dried up. The fa50 and fa41 airfilter is a highly visable part on KRs 69-70 shelbys boss 429s boss 351s 71 429 cj scj mustangs cars that have an open element ram air assembly where u ca see the filter inside the air cleaner base when u open the hood. Also wouldnt the c7sf fa 41 be correct for 67 gt350s.
Thanks to all three of you but I still have a question. What # KR would take the FA50 and what# takes the FA 41? I have a June built KR and a July KR. Do we know what #s take which one? Thanks
Brad
You are the FA41
Only the very early KRs had FA 50 as noted on the build sheets
It is believed the "C9ZAA" air cleaner assy used the FA50
The "C9ZAC" used the FA41
Quote from: Coralsnake on January 11, 2021, 05:39:55 AM
You are the FA41
Only the very early KRs had FA 50 as noted on the build sheets
It is believed the "C9ZAA" air cleaner assy used the FA50
The "C9ZAC" used the FA41
Pete, this is my build sheet. So what filter? I see an "AC" in the boxes
Ill defer to the 69 experts, but it looks that goes with the FA41 to me
Quote from: whiteykr on January 11, 2021, 01:19:24 AM
Thanks to all three of you but I still have a question. What # KR would take the FA50 and what# takes the FA 41? I have a June built KR and a July KR. Do we know what #s take which one? Thanks
Brad
As Pete pointed out build sheet air cleaner identifies but probably less than first month of KR production got the AA cleaner (FA 50) so June/July cars no. If I had to pick an arbitrary date I'd put around 5/14-5/21 for change. Had a 5/23 with original element and was FA 41
Tim & pete do u think the kr filter change had anything to do with airflow as the taller fa50 sits up higher and since the kr foam ram air seal was glued to the INSIDE of the 16" 1/4'' wide base it was a small gap area between the foam seal and the filter for air flow but by using the shorter fa 41 the filter sat down lower and didnt that change the gap between the filter top and the foam seal. Has anybody ever measured the gap between the 2 filters on a kr air cleaner base with the rubber seal glued in place? The 69 gt350 air cleaner base is a c8a # on build sheet and thats a non performance air cleaner base being 17'' wide and those bases used a fa50 i always thought and the decal was c8af-c fa-50
I have not heard a good explanation why there are two air cleaners with different engineering numbers on KRs.
Quote from: Special Ed on January 11, 2021, 10:15:33 AM
Tim & pete do u think the kr filter change had anything to do with airflow as the taller fa50 sits up higher and since the kr foam ram air seal was glued to the INSIDE of the 16" 1/4'' wide base it was a small gap area between the foam seal and the filter for air flow but by using the shorter fa 41 the filter sat down lower and didnt that change the gap between the filter top and the foam seal. Has anybody ever measured the gap between the 2 filters on a kr air cleaner base with the rubber seal glued in place? The 69 gt350 air cleaner base is a c8a # on build sheet and thats a non performance air cleaner base being 17'' wide and those bases used a fa50 i always thought and the decal was c8af-c fa-50
My build sheet below, Ed. What filter does it designate? Thanks. Gary
i would think the fa50
Quote from: Special Ed on January 11, 2021, 10:15:33 AM
Tim & pete do u think the kr filter change had anything to do with airflow as the taller fa50 sits up higher and since the kr foam ram air seal was glued to the INSIDE of the 16" 1/4'' wide base it was a small gap area between the foam seal and the filter for air flow but by using the shorter fa 41 the filter sat down lower and didnt that change the gap between the filter top and the foam seal. Has anybody ever measured the gap between the 2 filters on a kr air cleaner base with the rubber seal glued in place? The 69 gt350 air cleaner base is a c8a # on build sheet and thats a non performance air cleaner base being 17'' wide and those bases used a fa50 i always thought and the decal was c8af-c fa-50
I don't have a good reason as the seal to hood contact is same with both filters. The FA 50 just sticks up further. Maybe more is not better?
Thank you for all the input. It has been suggested to show application so here is what i have gathered so far.
FA-50's were used on the following:
• 69 GT350
• 71 Boss 351
• 71 429 Cobra Jet
• 71 429 Super Cobra Jet
• 68 GT 500 KR's (early production)
o Estimated around 1st month of production (June or July)
Do i need to add anything?
thank you guys..
🙈
Quote from: cbrown on January 11, 2021, 01:21:31 PM
Thank you for all the input. It has been suggested to show application so here is what i have gathered so far.
FA-50's were used on the following:
• 69 GT350
• 71 Boss 351
• 71 429 Cobra Jet
• 71 429 Super Cobra Jet
• 71 GT 500 KR's (early production)
o Estimated around 1st month of production (June or July)
Do i need to add anything?
Chris
GT500KR's =1968. The FA50's were used on the KR's as Tim replied probably only the first 2-3 weeks of production ( very late April to mid May ) then switched to the FA41's.
Rodney
damn, good catch lol. thanks
The fa 50 and fa 41 fits many other non performance 67 68 and up ford cars and trucks also including t-birds . What about the PANTERA air filter anybody know? as they are highly collectable last few years also.
To Pete and Tim: THANK YOU I never knew what was the correct air filter for my KRs. FA 41 it is
To my other SAAC KR owners : I looked at both of my build sheets and they say C9ZA C for June and July KRs just like Pete and Tim say.
Chris, do you have a nice repro FA 41? Please provide your website if you do. I know you have other parts for sale I might want to buy. You do remember me ? The nice guy from Indiana.
Regards
Brad
Quote from: whiteykr on January 12, 2021, 01:13:53 AM
To Pete and Tim: THANK YOU I never knew what was the correct air filter for my KRs. FA 41 it is
To my other SAAC KR owners : I looked at both of my build sheets and they say C9ZA C for June and July KRs just like Pete and Tim say.
Chris, do you have a nice repro FA 41? Please provide your website if you do. I know you have other parts for sale I might want to buy. You do remember me ? The nice guy from Indiana.
Regards
Brad
http://www.brownsautobodyservices.com/shop/air-filter-fa-41-c7sf-9601-a
Thank You Gary
Yes Brad, I remember you... I have KR original RAM SEAL for you too...
chris
Chris u forgot to put photos of the shepards cross type autolite and c8af #s of the fa50 on your website so buyer can see all the details like u showed on the fa41 detailed photos.
Need more help!!! I will get it done. thanks to everyone for the support.
chris
Chris,
You have a PM
Brad
Ed, brought to my attention that i did not show the most important part..
Yep buyers need to see the details as these took along time to make concours correctly . Does anybody know the real story behind the early version shepards cross with the loop and star as years ago i got a call from a lawyer working on a lawsuit about this and he wanted to buy some autolite stuff so i sold him my extra autolite sales binder that had all the autolite sales products with photos but i never heard how the lawsuit was settled as he said it had something to do with the first type autolite shepards cross loop and star rights and that era of autolite marked stuff didnt last long as the loop and star disapeared but still showed up on the fa 50 - 68 and up filter but its not on the fa41- 67 and up filter.
Received a FA-41 filter from Chris Brown today and it is better than expected. Would recommend for any other KR owners.
Thanks Chris, awesome part.
Don
gt350bp
+1
Received FA -41 air filter today and looks excellent.I am glad to have it and would highly recommend. Nice job Chris and Ed.
Brad
We made the fa50 fa41 fa84 (70-71 torino) air filters from assembly line only examples. Many ford car guys may think these are different and not like the in the box NOS autolite filters they have seen over the years and if u ever seen a low mileage unmolested car these type of filters will still be on the car. Air filters were good for 10,000 miles before being changed if u clean them when needed depending on driving conditions and type of roads traveled back in the day. Back in the early 80s i started collecting autolite parts and only found these type of used filters on low mile cars and never in autolite boxes in old ford dealerships etc. Another way to find these assembly line filters was inside a complete nos ford air cleaner assembly since the air cleaners were serviced in a ford box complete filter lid and all with the autolite decal on the side and all just like they were delivered to the assembly line as a complete unit from the vendor who made them. I think the air cleaner vendor had these filters made for them only in large quanities and ford had autolite make the service replacements a little different design so when the car was serviced by ford under warranty the service department guys could see (depending on the mileage) that the filter was the original type and needed changing and the car owner could see the new different type of filter and know it was changed after being charged for it kinda like the assembly line oil filter being blue but new autolite service filters were white. I am not sure of this logic as its just a guess but why would autolite change the tooling design and have more expenses when the original filters are same size as service replacements. The assembly line filters have different ID markings darker color rubber and different wire mesh all noticeably different than the service type. Years ago i got some assembly line filters from same source as assembly line blue oil filters along with many other lunch pail parts from dearborn plant. The decision was made to make the assembly line type filters because if doing a fresh concours restoration like the car rolled off the assembly line this is the type of filter that your car was born with and if an open element ram air cleaner this is a highly visable part sitting on top your engine. We made all 3 types of filters since some of the parts are the same between these 3 but the height being different and the fa84 (torino) doof is shortest.
Ya what Ed said!!! :)
thanks to everyone for the support...
chris