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air cleaner element and cover for '71 DT250E

  • msavitt
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Any ideas of where I could find a "stock" filter element/mesh, Yamaha or replica appreciated.
I also need the airbox cover and cannot find one on eBay, so if anyone has one pls shoot me a me$$age, thank you.
05 Mar 2021 08:48 #1

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Replied by Yamadude on topic air cleaner element and cover for '71 DT250E

If you have the old air filter core, you can construct a new filter using Uni filter material, gluing it into the stock  filter frame. 

 
You can just call me Dude.
Syracuse, New York
Current bikes: 1973 DT3, 1974 TY250, 1969 Triumph Bonneville, 1975 XS650, 1976 XS650, 1982 XS650, 1983 XS650, 2006 FJR1300
05 Mar 2021 17:02 #2

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Replied by msavitt on topic air cleaner element and cover for '71 DT250E

no frame, no cover either, but thank you nontheless
the search continues!
05 Mar 2021 17:04 #3

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Uni makes filters with cages for some models still.

Just a tip...  it's kinda important to list your year and model correctly...  and pictures of what you have (i.e. airbox) tend to help a lot...  A 1971 would be a DT1E...  a DT250E would be a 1978.  Way to remember is that any Enduro before 1974 does not have the engine displacement spelled out...  First "DT250" was in 1974.  Before 1974 the first letter indicates the approximate engine size, second letter is generally the type of bike...
J~ 60cc
H~ 90cc
L~100cc
A ~125cc
C~180cc
D ~ 250cc
R ~350cc

T= "Trail"

So a DT before 1974 designates a 250cc Trail bike...  the  "1A" , "1B", "1S", "1E", "2", or "3" on a pre-74 DT identifies the year and model. 

In 1974 Yamaha finally figured out their goofy model numbers confused everyone and started using the "DT" prefix on almost every Enduro along with the displacement.  DT125, DT175, DT250, DT360, etc.  Year was identified by a suffix letter A, B, C, D, E, F, etc. A being 1974, B = 1975, etc.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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Last edit: 05 Mar 2021 18:24 by MarkT.
05 Mar 2021 18:00 #4

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Replied by Swoop56 on topic air cleaner element and cover for '71 DT250E

As Mark already said , Unifilter have a unit for the DT1 , that comes
complete with a cage . The flaw in the plan is that the cage is a little too
long , from memory about 8mm . It can be shortened to suit .
I cheated , and slipped the Unifilter element over the stock OEM cage .
Both OEM cages and filter box lids do appear on Ebay occasionally .
Patience is a Virtue , especially in this game .
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05 Mar 2021 18:16 #5

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Also, often you can buy an entire assembly on ebay cheaper than just a part like the lid or cage! 

So looking for a complete air box is prudent even if you don't need the whole thing.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
05 Mar 2021 18:22 #6

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Replied by Yamadude on topic air cleaner element and cover for '71 DT250E

Great information, Mark!
You can just call me Dude.
Syracuse, New York
Current bikes: 1973 DT3, 1974 TY250, 1969 Triumph Bonneville, 1975 XS650, 1976 XS650, 1982 XS650, 1983 XS650, 2006 FJR1300
05 Mar 2021 18:27 #7

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Replied by msavitt on topic air cleaner element and cover for '71 DT250E

thank you all
i was imprecise for sure, its a model DT1E and a VIN DT1F...very intuitive!
I searched all over ebay, couldnt find. Worst case i fabricate my own cage and use a unifilter element, but still need to find or fabricate a top (4 screws, trapazoidial)
decied to pull the head and the cylinder looked good, can still see remnants of x-hatch.  then of course i was thinking about the integrity of the base gasket so i pulled cylinder and found broken gasket and a lightly ported intake...another girl who's not a virgin.  Piston nice and clean and has a 96 on top, so I am surmising 69.96 standard?  Clearance is roughly .002 and rings terrific.  My thought is to clean everything up, put it all back together properly sealing everything up, pressure test.  Thoughts on my contemplated  approach appreciated.  

on another topic, i had my recently resurected Dt360 on the road to Maple Creek trail head today.  On the road up hill and into the wind i could keep things up over 50 and on way back I didnt dare to go over 60 and could have.  then i went 1/2 way up the mountain until a flipped over jeep and a tow truck ruined my plans.  While its still a bit wild at a part throttle under certain conditions, it cruses steady nicely and no pinging.  So i think this one is a keeper for sure!
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05 Mar 2021 19:18 #8

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You might look into what GFrench did for the air filter on his "Black Widow" project.  Has the stock look and protection of the box sides and a better set up all around.  See thread below for a couple of post and great pictures/instructions.

yamaha-enduros.com/index.php/forums/gene...zarks?start=10#22711
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
05 Mar 2021 20:14 #9

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