• 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

TR4/4A DCOE air filters

PeterK

Yoda
Offline
The engine is not even put together yet and I'm thinking about air filters. So here's the cart (before the horse) questions.

1) Which is the thickest air filter for DCOEs than can fit without inner fender mods on a TR4A?Will 2-1/2" clear?

2) and which will fit over the ram pipes and still provide ample filtering?

My preference is not foam but a K&N type filter media, but most say w/o ram pipes.

Thanks.
 

Darrell_Walker

Jedi Knight
Silver
Country flag
Offline
This was what I used when I was running Webers.
 

Attachments

  • IMG_1784.jpg
    IMG_1784.jpg
    71.1 KB · Views: 41
  • IMG_1790.jpg
    IMG_1790.jpg
    66.2 KB · Views: 37

Tybalt

Jedi Trainee
Country flag
Offline
Normally I'm not a big fan of foam filters but the ITG filter is nice set up. As for the K&N air filters, I'm not sure what thickness can be run on TR4/4A from a body clearance standpoint. I do know that on a TR250/5/6, that the 2 1/2" is too thick unless you want to start altering body work.

First question is which DCOEs (40 or 45) do you plan on running? If it is the 40s, then use the filter for the 45s. The opening for the stacks on the K&N 40DCOE backplate is too small for any sort of stack. If you run the 45 DCOE filter on a 40DCOE you do not have to open up the hole in the backplate. For the 45s, the 48DCOE filter probably offers up clearance for the stack or at the very least reduces the amount of material you need to remove to fit the stack.

APT offers a 16mm stack for both 40 and 45DCOEs which work with the short K&N filters needed for the TR250/5/6 applications:

https://aptfast.com/ShowItem/102460 16mm Tall Weber 40mm DCOE Ram Stack.aspx

https://aptfast.com/ShowItem/102463 16mm Tall DCOE 45 Weber Ram Stack.aspx

You might want to contact them and see what they have to say about K&N filters for DCOE use on the TR4/4A.
 

Grantura_MKI

Luke Skywalker
Silver
Country flag
Offline
Two points here. First, you MUST use velocity stacks with side draught Webbers. Second, do not use foam filters, as petrol will be spit on them from the carbs. If you happen to have a back fire and do not know, the car will ignite.....not good.
 
Similar threads
Thread starter Title Forum Replies Date
sim air filter box for a DCOE 40 Spridgets 3
N Dcoe???? Spridgets 9
N Dcoe????? Spridgets 1
richie TR4/4A TR3/TR4 Weber DCOE serious fitment issues Triumph 7
T Looking for advice for throttle linkage for Weber DCOE Spridgets 2
T Understanding Weber DCOE identifiers? Spridgets 0
T Problems disassembling a Weber side-draft DCOE Spridgets 2
T Jetting a 40 DCOE for 1275 Spridgets 18
T Identifying vintage of a Weber DCOE Spridgets 4
J TR2/3/3A accelerator linkage for Weber 45 DCOE Triumph 4
sim High performance DCOE carbs 40 or 45 Spridgets 5
N DCOE double vs. single choke theory Spridgets 11
hondo402000 Weber Carburator rebuilding DCOE Triumph 14
bugedd Weber DCOE question Spridgets 43
G Spitfire Anyome here running a single DCOE on a Spit? Triumph 0
G DCOE bog/hessitation Spridgets 46
G 1500 dual SU/ DCOE throttle cable question Spridgets 5
G DCOE trouble/qusetion Spridgets 10
J Ignition advance with Weber DCOE Spridgets 7
G Spitfire Anyone have a single DCOE mainfold for a 1500 Spit Triumph 0
hondo402000 Weber DCOE jets needed[to borrow and return] Austin Healey 2
hondo402000 DCOE Weber jets needed[borrow and return Jaguar 0
hondo402000 TR6 TR6 40 DCOE Webers Jets needed to borrow them Triumph 3
hondo402000 TR6 TR6 Dialing in my Webers DCOE Triumph 2
M Rejetting weber 40 dcoe for 1275 Spridgets 1
DerekJ 45 DCOE Weber on BN1 Austin Healey 10
theleisure DCOE 40 Flooding Spridgets 6
DrEntropy 45mm DCOE Webers, anyone? Racing 1
T Jetting Weber DCOE for 948 and 1275 cc Spridgets 3
T Jetting a Weber 45 DCOE for a stock 1275 cc Spridgets 3
eschneider Weber DCOE help? Lotus 19
R6MGS Weber Sidedraft DCOE MG 10
Gray_Cat Know Someone looking for a Weber 45 DCOE? Spridgets 0
Luke_Healey Weber DCOE 45 OK on a 1098 CC engine? Spridgets 2
L TR4/4A Weber DCOE linkage for TR4 Triumph 4
scubabatdan Weber 40 DCOE 18 throttle problems on 73 Midget Spridgets 22
Jayrz HS2s VS 45 DCOE Spridgets 6
73MidgetLigon DCOE Trouble shooting Spridgets 32
73MidgetLigon DCOE Fun at Work...... Spridgets 2
73MidgetLigon DCOE 45 Jetting!!! Spridgets 3
1976Midget DCOE HELP Spridgets 14
1976Midget DCOE STUFF Spridgets 11
Baz Weber DCOE.... MG 16
L Big savings on Weber DCOE 45 carbs... Triumph 1
hondo402000 TR6 TR6 Weber 40 DCOE Latest friday 4-21 Triumph 2
J weber DCOE 45 carb a bad idea? Triumph 5
73MidgetLigon mg backfire dcoe Spridgets 31
hondo402000 weber 40 DCOE carburators Triumph 5
Alan_Myers 42 DCOE Webers Racing 1
K Weber 40 DCOE and a 1275 Spridgets 2

Similar threads

Top