• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)
Tips
Tips

Anybody use Longflo air filters?

sparkydave

Jedi Knight
Country flag
Offline
Just curious, I had picked up a spare Zenith Sromberg carb and manifold off eBay, and it came with one of these attached. Well, one of the latches on my stock setup never worked right, and it was a pain to pull the whole thing off to tune the carb, so I went against the federal clean air act and put the Longflo on. Makes an interesting hissing when I stomp on the gas, and seems to make a little more noise at high speed, but it seems okay. Would a K&N be any better? Just wondering how the foam element in the Longflo holds up compared to K&N's washable filters.
 

Kurtis

Jedi Warrior
Country flag
Offline
I currently have Longflow air cleaners on both my TR4 and my Sprite (both have SU carburetors). I haven't had any problems with them. The foam element in the Longflows is washable. I don’t know how well they actually filter the air, but they have to work a lot better than the stock (wire mesh) setup on my TR4, which I could actually see through. I suspect they only kept rocks and larger birds out of the combustion chamber!

I haven't noticed a hissing sound on my Sprite, but the SUs on my TR4 make a distinct hissing sound when I accelerate hard. I suspect the SUs on my Sprite hiss as well - The exhaust system on my Sprite is just much louder. SUs just hiss... that's typical for them. I don't know about Zenith Strombergs.

One thing I don't like about the Longflows is the cheesy plastic plugs that come with them to plug the extra holes (for crankcase ventilation return if your setup requires such). They don't fit right - too loose. I had to get a couple of plugs from Lowes.
 

Kurtis

Jedi Warrior
Country flag
Offline
I've had them on mt TR4 for a couple of years. No signs of wear and tear. I've put about 6 or 7 thousand miles on the car since I installed them and cleaned them a couple of times.
 

stavo56

Freshman Member
Offline
11/18/2016. Longflow foam air filters; a cautionary tale. I have two English cars and a 1970 Datsun 240 Z. This story concerns the Z with triple DCOE Weber carbs and a radical camshaft. Bare with me; because of the cam, the Z engine is very cantankerous until warmed up to full operating temp. Even when warm, the engine will fall on it's face if too much throttle is applied under 2000 RPM. Well yesterday morning while warming up the Z for a drive, the engine went really off song. I turned the engine off and popped the bonnet, white smoke came pouring out! I jumped out and unlatched the bonnet and was welcomed by the sight of the front Longflo foam air cleaner on fire! I didn't see that one coming. I'm not trying to say anything bad about the Longflo product, but rather my lack of thinking the situation through. I have a tweaked engine that likes to back fire through the intake manifold and carbs, little fire balls at you mate! I'm willing to say that if you have a stock engine or slightly modified engine the Longflo foam filters will be fine. I've discovered that foam filters will readily light on fire. In my situation I will be changing to more substantial cotton fabric/more fire retardant air filters. This morning I did go out and buy a fire extinguisher to mount in the car. I blew the bloody fire out with my lungs and a full dose of adrenaline. I'm not going to count on that the next time.

Steve/stavo56
 

LarryK

Darth Vader
Gold
Country flag
Offline
That is a problem with foam. Being oiled to keep dirt out and close to the throats, easy on fire from backfire. Most foam filters look good for show, but the cotton or paper elements endure backfires to a point. Glad you got the extinguisher, all old cars no matter what stage of restoration need one. Saves you from doing it all over again, just a mess to ckean up.
 

BlueMax

Jedi Warrior
Offline
P1040058.jpg002.jpgI


I use one on my Super 7 but, not on the Bugeye. Super 7 is fuel injected, spit backs are seldom. Unfortunately, elements are not available from ITG. Filters have to be replace as an assembly and they are not cheep!! SU's & DCOE's are prone to be cold nature and will spit back during the warm up so, I use a K & N on the Bugeye.
 
Last edited:

SD Bugeye

Jedi Warrior
Country flag
Offline
If your going to use foam make sure to keep the oiled K&N oil works will if you follow the correct procedure.
I've seen pretty foam filters at shows that never saw a drop of oil
scarry thought having one backfire with fuel residue as the major contributer and no oil.
And air whistling unrestricted due to no oil thru a unoiled filter
Yikes that and foam now you have a fire.
not a good plan.
 

The_architect

Jedi Trainee
Offline
Question for you Bluemax--hoping no one will mind if I ask something that has nothing to do with the filter question.

What a gorgeous engine bay, I guess that it is in your Bugeye. It appears that the hose that goes from the timing cover can tees off to the rocker cover, and then it disappears as it gets to the back of the engine bay. Where has it gone? What does it attach to?

Thanks
Charlie
 

BlueMax

Jedi Warrior
Offline
Thanks Charlie, the hose off of the timing cover and valve cover runs to the oil catch tank. You can see from this photo the catch tank in the top LH of the photo.

P1040108.jpg
 

stavo56

Freshman Member
Offline
11/18/2016. Longflow foam air filters; a cautionary tale. I have two English cars and a 1970 Datsun 240 Z. This story concerns the Z with triple DCOE Weber carbs and a radical camshaft. Bare with me; because of the cam, the Z engine is very cantankerous until warmed up to full operating temp. Even when warm, the engine will fall on it's face if too much throttle is applied under 2000 RPM. Well yesterday morning while warming up the Z for a drive, the engine went really off song. I turned the engine off and popped the bonnet, white smoke came pouring out! I jumped out and unlatched the bonnet and was welcomed by the sight of the front Longflo foam air cleaner on fire! I didn't see that one coming. I'm not trying to say anything bad about the Longflo product, but rather my lack of thinking the situation through. I have a tweaked engine that likes to back fire through the intake manifold and carbs, little fire balls at you mate! I'm willing to say that if you have a stock engine or slightly modified engine the Longflo foam filters will be fine. I've discovered that foam filters will readily light on fire. In my situation I will be changing to more substantial cotton fabric/more fire retardant air filters. This morning I did go out and buy a fire extinguisher to mount in the car. I blew the bloody fire out with my lungs and a full dose of adrenaline. I'm not going to count on that the next time.

Steve/stavo56
Steve coming back;
After taking off the air cleaner screen and back plate, I looked into the carb barrel, I thought I was looking at melted plastic on the venturi. No I was looking at a melted venturi. Wow. The choke and venturi pops out on a DCOE with out too much trouble. It's a replaceable part, but here's my problem. These carbs are at least 35 years old, the choke and auxiliary venturi I have are a one piece casting; every website I've gone to show this assembly as two pieces. Trust me, what I have in my hand is a one piece casting, even the Weber Carb book that I have show's this assembly as two pieces. I don't want to start emailing, and calling suppliers about this if they don't know about really old/ thirty five year old carbs.
Anybody have any suggestions?

PS. I have found cotton gauze based filters, 3.125 high and the length and width at ten dollars less than Longflo's (no name's mentioned for obvious reasons).

Steve/stavo56
 

stavo56

Freshman Member
Offline
BCF;
I repaired the choke and venturi enough to get the car started and move it around in my shop. I started it without the air filters on, it's been a number of years since I've done this. I stated in my initial post, "fire balls at you mate"; man was that an understatement. When this engine backfires through the intake and carbs it is more like a plasma blast. It's a sight to behold. The other two Longflow foam air filters showed signs of melting. Like I said in my initial post, I am not saying anything against Longflow products, but rather my bad choice.

Steve/stavo
 

nomad

Yoda
Offline
K&N's will burn as well [personal experience], as, I'm sure, the original paper element will. If your car is backfiring I think one should expect it. Some way to put out the fire is good to have. In my case it was my wife's bottle of water and my gloves.

Kurt.
 
Similar threads
Thread starter Title Forum Replies Date
Csarneson Anybody feeling optimistic? Or drunk? Austin Healey 21
Keoke Anybody heard: Austin Healey 9
Got_All_4 General TR Anybody Hear or Use This Hot Spark System? Triumph 10
Csarneson Anybody seen this Front Shock Conversion Kit before? Austin Healey 6
Gerard Anybody have...? Spridgets 9
TRMark General Tech Anybody Using Star Tron Triumph 2
J Anybody driving a 2018 Jaguar XJ? Jaguar 3
J anybody tell me why this thread closed? Austin Healey 4
TR3TR6 TR2/3/3A Anybody else having a bad day! Triumph 31
M TR2/3/3A Does anybody use the oils and lubes from the moss motors site? Triumph 3
TomMull Post-War Other Anybody interested in 10s? Triumph 15
2billydavies TR2/3/3A anybody need a spare rear bumper? Triumph 8
Randy Forbes Healarossa; anybody ever seen, or heard of it? Austin Healey 2
catfood Rivnuts anybody Austin Healey 19
H Joan Baex 1961 flat floor--silver exterior--anybody know what IRS sold it for? Jaguar 0
H TR4/4A Triumph 250-K by Pete Brock--anybody recall how much Brock advertised it for? Triumph 0
K Anybody Try Exactline blades? Restoration & Tools 4
B TR2/3/3A Anybody finish their car in laquer? Triumph 18
64Elan Anybody interested in an Italian Spridgit? Spridgets 3
Gerard Is anybody able to ID these racing/sports seats? Spridgets 0
Gerard Anybody have a steering wheel emblem for '68 Sprite stock steering wheel? Spridgets 11
S Anybody tried this Alternator ? Austin Healey 11
W Anybody have one of these surplus? Spridgets 5
krswen TR2/3/3A Anybody own TR3 TS 59719 L? Triumph 0
krswen Anybody own Series 1 E-type coupe 1E 32257? Jaguar 2
TR4nut TR6 TR6 under dash pics? Anybody? Triumph 9
DNK Wedge Anybody have any "good" adhesive? Triumph 2
B anybody know how and where I can get the cable ends for the heater cable? Spridgets 13
AN5Sprite Anybody Have A Bugeye Fuel Gauge Core To Spare? Spridgets 3
J Anybody need a 1500 motor? Spridgets 2
R July 15 Fairfield Ohio meet anybody going? Spridgets 8
Gerard Does anybody have a busted crank? Spridgets 3
regularman Anybody in Arkansas? Spridgets 2
rkep01 Anybody have one of these available? Spridgets 7
regularman Anybody got any cheap used distributor parts Spridgets 8
M TR2/3/3A Anybody ever dye wool carpet? TR3 Triumph 0
T TR2/3/3A Anybody need a TR3 frame and suspension Triumph 5
T Anybody Want to Play "Identify the Crud"? Triumph 2
DNK Anybody? Triumph 3
Banjo TR4/4A AAAAUG! anybody got an extra TR4A piston? Triumph 3
DNK Anybody have .. Lotus 1
jdubois Anybody tried these floats? Triumph 7
DNK Anybody need an Eclat Lotus 4
longbridgehealey Does anybody know this car?? Spridgets 0
DNK Anybody... Triumph 12
jdubois TR6 Anybody interested in a TR6 in boxes in MA? Triumph 16
Tr3aguy Anybody got 44k Triumph 16
L Anybody used.... Spridgets 9
S Anybody need a grocery gettery??! Other Cars 10
jjbunn Anybody near Fort Walton Beach, FL ? Jaguar 7

Similar threads

Top