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  Nozzle Check Valve Part # for HR 143A?
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   Author  Topic: Nozzle Check Valve Part # for HR 143A?  (Read 3103 times)
wrenchy
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Nozzle Check Valve Part # for HR 143A?
« on: January 29, 2012, 07:26:24 AM »
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Hi all,
I have a single Tillotson "HR 143A  2" with short stack pump for a '73 Elan 250SS, type 249. 
I need the part number and any cross reference numbers for the nozzle check valve so I can shop for new parts.  Please take note that it is NOT threaded into the carb body. It is pressed in. 0.25" dia.
My research has me guessing at part # 363-024. Not sure.

Also, # for the hi speed mixture orifice. This one has an mixture screw over it, though the nomenclature states that it is fixed.  I think it should be .041"

By the way, is it common for these carbs to have 2 of the pump mounting bolt holes machined into the choke and throttle areas of the carb? Shall I go ahead and plug them with JBWeld?

Thank you for your help.

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dooitvintage
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #1 on: January 29, 2012, 07:01:27 PM »
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check nozzle is 404 0363 00. The fixed jet size is 41.  Steve

I got it now. I looked at one of mine. No I wouldn't JB anything. It's from the factory that way. When you put it together the gaskets will do their job. Check out DoubleT's thread on overhaul/assembly and Lshobie's video on youtube.
« Last Edit: January 30, 2012, 10:26:31 AM by dooitvintage » Report to moderator Logged
wrenchy
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #2 on: February 2, 2012, 05:55:04 AM »
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Yes, that's the hole. My real question is the non-threaded check valve.
My search turns up # 016624 which crosses over to Bombardier 404 0363. Is that a correct number? See link to photo. Who might have those?

[/url]
DSC00039 by Mr Wrenchy, on Flickr[/img]
« Last Edit: February 2, 2012, 06:05:55 AM by wrenchy » Report to moderator Logged
dooitvintage
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #3 on: February 2, 2012, 08:47:03 AM »
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kinda scarce. I got mine from Dave(775) but don't know if he has any left. the same one fits the 143A and 137A. PM him here or his store is at this link. He doesn't list all the parts he has, WAY too many.  just email your request he's great to deal with.
http://www.vintageskidoopart.com/index.html
when you change them out, be gentle. they push through to the carb throat with light tapping with a punch or even a deep socket that fits the outer shoulder diameter of the valve. I cut off a plastic ball point pen that fit over it and in the hole so as not to damage it or the hole. remember how far in the old one was. I like to take pics of stuff with my phone so I can see what it looked like for re-assembly. then delete. Steve
« Last Edit: February 2, 2012, 08:48:47 AM by dooitvintage » Report to moderator Logged
hermit
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #4 on: February 2, 2012, 10:23:18 AM »
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I'd like to see the nozzle from another view. Appears much like an HD, not that would be any more plentiful. Never saw one of these I recall.
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dooitvintage
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #5 on: February 2, 2012, 12:56:14 PM »
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its my understanding they were only used on the 137A's on the TnT and the 73 Elan SS w/143A'S. Interesting a single 143A on a 73 SS. Is a single 041 high speed fixed jet enough? They were intended as a dual setup. The 73 294 TnT dual 137A setup used a 45 fixed.
« Last Edit: February 2, 2012, 04:07:09 PM by dooitvintage » Report to moderator Logged
775
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #6 on: February 2, 2012, 02:04:11 PM »
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Thanks Marc (and Steve).

Marc, your check nozzle will mail out on Friday.

My last one.

Dave
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moxymech1
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #7 on: February 2, 2012, 03:59:30 PM »
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nice thread,

i was asking about these a couple of years ago and had no luck, is there actually a ball in there?

moxy
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dooitvintage
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #8 on: February 2, 2012, 04:01:56 PM »
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no it appears to be a little flap of some sort. I've got an old one I was thinking of pulling it out to see what exactly it was. If I do I'll throw a pic up of it.
The thing that stinks is rare parts like this aren't being reproduced. When they're gone......
« Last Edit: February 2, 2012, 04:14:50 PM by dooitvintage » Report to moderator Logged
hermit
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #9 on: February 2, 2012, 04:37:26 PM »
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It's a piece of fiber.
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'65 Olympique
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #10 on: February 2, 2012, 08:43:16 PM »
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I have another style nozzle with this fiber flap in there. I think they were trying something other than the ball. I think if you soak it and can blow back and forth having it close off in the back direction it might be ok until you find an nos one.
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'65 Olympique
dooitvintage
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #11 on: February 3, 2012, 04:27:42 AM »
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and from what info I've come across you definitely want to remove it prior to soaking in carb cleaner
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moxymech1
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #12 on: February 3, 2012, 06:52:23 AM »
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what it looks like from under the welsh plug,



moxy
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wrenchy
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #13 on: February 3, 2012, 03:14:44 PM »
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That is the check valve that I have.
If I recall reading correctly, there was a recall to convert them to single carb. Not sure why. Perhaps there were too many problems keeping them in sync, or not enough impulse for the pumps.
I hope that flat disk check valve isn't the reason they moved on to the ball check valves! 
« Last Edit: February 3, 2012, 03:28:36 PM by wrenchy » Report to moderator Logged
dooitvintage
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #14 on: February 4, 2012, 04:44:14 AM »
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engineers are always working on a better way, but mine seem to work fine. not sure how the bore compares to the threaded Til bodies but I have a bad body I may try to thread. assuming the threaded ball nozzle functions the same and it should
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wrenchy
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #15 on: March 14, 2012, 06:37:34 AM »
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I got it running again. Had to open the low speed screw 2 1/4 turns to get it to start and idle. I took it snowmo-camping in the Adirondacks at zero degrees after my '09 Renegade broke down. Ran good, but it struggles uphill, carrying me and my pack at 225 lbs.
What fun, after enjoying an SC-5 suspension for 3 1/2 years.
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moxymech1
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #16 on: March 14, 2012, 09:54:50 AM »
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This is a good thread, has anyone found replacements for these check valves?

please make sticky

moxy
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #17 on: March 14, 2012, 10:14:44 AM »
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I don't think so. But I would be willing to bet an hl would work
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'65 Olympique
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #18 on: March 14, 2012, 05:06:21 PM »
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HI  just received in the mail 2.. 4040363  nozzle check valve for HR137a      does have a ball check valve with a flap over it with 4 brass fingers to hold everything in place.As for the length it is .308 in length compared to hd valve at .445 long
Flap valve looks to be made of a woven fiberglass material.
If you need more info I will not be installing them for a couple days
thanks  Gaston
ph 705 272 6677
gave 3 pics to  Moxy to post for me
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1961 R12 snowmobile 1961 J61 1963 R6  1963 RD8  1964 BR64  1965 B5  1966 BB6
1967 BB7  1968 SS8  1968 BS8 1968 DS8  1968DD8  1969 oly 12.3
1969 oly 320  1970 oly 12.3  1970 TNT292 
1970 TNT340  1970 skiboose  1971 sleigh 1972 ELAN 250E  1972 skiboose
1973 TNT294  1973 TNT340  1975 ELAN250T
moxymech1
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Re:Nozzle Check Valve Part # for HR 143A?
« Reply #19 on: March 14, 2012, 05:24:07 PM »
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Gaston said that the HD check valve when shaken the ball feels like it has more travel than the HR.  He was unable to see the ball in the HR.  But believes there is more to it than the fiberglass screen

moxy

Gastons Pics

HR is the short one



HD with check ball, the mark on the shaft might be where to cut to fit HR/HL



HD on the left, HR on the right

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