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Thread: TR4 Air cleaners on TR3

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    Jedi Hopeful
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    TR4 Air cleaners on TR3

    Would appreciate any clarification of what I have read on some of the threads about alternative paper air cleaners.

    Do the early TR4 paper cleaners fit the TR3 carbs AND clear the inner fenders?

    Were the TR4 cleaners a complete disposable assembly, or were the paper filters replaceable? I see a replacement filter #3-176 (housing only pictured) listed on VB for TR3/4.
    Walter

    1974 Triumph TR6 (Previous)
    1959 Triumph TR3A, TS52910L (coming back together)

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    Senior Member SASSAMON's Avatar
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    Re: TR4 Air cleaners on TR3

    Hi Walter,

    When I took possession of my TR3 it came with a pair of elliptical paper element air filters that looked like the filters being sold by VB for the TR4A.

    The filters were one piece and they were replaced by a set of K&N filters, 56-1400, which I have been happy with.
    1957 Triumph TR3 TS21383L "Bettie"

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    Jedi Knight GTP1960's Avatar
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    Re: TR4 Air cleaners on TR3

    I use K&N as well (56-9327). These are the conical ones. Designed to increase air intake.
    probably not recommended for a dusty environment. But I like the extra punch of increased air flow, so they are ideal for my needs. And they fit with no problem.

    fwiw: blog entry:
    https://www.britishcarforum.com/bcf/...ilters-56-9327
    Guy
    1960 TR3A TS63684L

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    Luke Skywalker
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    Re: TR4 Air cleaners on TR3

    Quote Originally Posted by SASSAMON View Post
    Hi Walter,

    When I took possession of my TR3 it came with a pair of elliptical paper element air filters that looked like the filters being sold by VB for the TR4A.

    The filters were one piece and they were replaced by a set of K&N filters, 56-1400, which I have been happy with.
    I'm sure these will certainly out perform the originals but they seem a bit pricey. Perhaps worth the extra bucks if you drive on dirt roads or in areas prone to dust storms, but for us here in New England, the original air cleaners seem fine to me.
    Tom

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    Jedi Knight GTP1960's Avatar
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    Re: TR4 Air cleaners on TR3

    Yes the K&N are pricey.
    but cleanable &reusable. ( still pricey though)
    Guy
    1960 TR3A TS63684L

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    Re: TR4 Air cleaners on TR3

    No, the round TR4 filters won't work, the front one hits the fender because the holes are centered not off set like the metal TR3 air filters.
    Regards, Bob

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    Re: TR4 Air cleaners on TR3

    Thanks, gentlemen. While I will never get rid of the originals (repros now), a little more filtration for the newly rebuilt engine would be nice, especially around sandy areas on the coast. Some folks use the shop vac foam band around the originals and that helps. The K&N concept seems very practical. A disposable paper filter would be good too and there are some good ideas out there. More to follow. Your information is much appreciated.

    Regards, Walter
    Walter

    1974 Triumph TR6 (Previous)
    1959 Triumph TR3A, TS52910L (coming back together)

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    Re: TR4 Air cleaners on TR3

    Quote Originally Posted by TuffTR250 View Post
    No, the round TR4 filters won't work, the front one hits the fender because the holes are centered not off set like the metal TR3 air filters.
    Regards, Bob
    That is very good to know. I was eying some NOS TR4 filters...Thanks, Bob!

    Walter
    Walter

    1974 Triumph TR6 (Previous)
    1959 Triumph TR3A, TS52910L (coming back together)

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