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Ford 9N, 2N & 8N Discussion Forum
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Idle jet removal drilling easy-out?

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Popster

07-29-2005 16:31:31




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I"m trying to rebuild my MS carb for my 8N. It came with the tractor as a spare carb, but I want to have it as a backup. It has surface rust in and out. I want to boil it out and completely rebuild it using Don Stewart’s directions from this site.

The idle jet is completely mashed- cannot get a screwdriver (parallel tip) on it. It is just ground almost d the hole is buggered.

I was going to drill it and try an easy-out. I"ve soaked it for two days with silikroil.

Is the jet perpendicular to the face of the carb body or is it on a slight slant? Any suggestions as to how to get the jet out?

Many thanks in advance!

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RustyAL

07-30-2005 19:50:01




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 Re: Idle jet removal drilling easy-out? in reply to Popster , 07-29-2005 16:31:31  
On a TXS 241 the jet under the nozzle is simple to remove. Drill it out using a drill that fits the small plug hole. Then run your tap into the threads in the small plug hole and thru the remains of the jet. On the 33 there is no plug hole so it is best not to even try to remove that jet. I use easy outs even though I was trained not to in high school and college machine shop. You are trained not to use them then you get a job in a major automotive parts manufaturing plant and they buy them by the gross. You become an expert using esay outs and removing broken easy out. Kind of like jumbo shrimp. So after using a million of them and breaking 100,000 you learn not to use 500 foot pounds on something you can not blast out with an A bomb. Also the big manufacturing plant that belived in esay outs had the high dollar equipment to remove broken ones. Bottom Line. Do not use easy out.

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bj/8n/mt

07-30-2005 09:29:39




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 Re: Idle jet removal drilling easy-out? in reply to Popster , 07-29-2005 16:31:31  
If you have been putting off buying a set of left hand drill bits now you have a good reason. I didn't think I was going to get much use out of them but they beat "easy outs" all to heck and usually get even broken flush studs on the second try [start small and work up]. A link to one source [northern] is posted below

Your mileage may vary

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Popster

07-30-2005 13:51:55




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 Re: Idle jet removal drilling easy-out? in reply to bj/8n/mt, 07-30-2005 09:29:39  
Great suggestion! Done!

Also saved me a load of time on drilling out screw in throttle for my boat. Thanks!



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Popster

07-29-2005 19:54:15




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 Re: Idle jet removal drilling easy-out? in reply to Popster , 07-29-2005 16:31:31  
Thanks for the help!

I hear the message- Out with the easy outs.

Will try boiling and then clean up with electrolisis.

Hope I don't have to drill it out, but will do if necessary.



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Dell (WA)

07-29-2005 16:53:59




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 Re: Idle jet removal drilling easy-out? in reply to Popster , 07-29-2005 16:31:31  
Popster..... ....NO EAZY-OUTS, EVER!!! understand?

I have heard of 2-different removal tricks for brass jets in cast-iron M/S carbs. BOIL the offending part in HOT WATER for a while. Something about different metal expansion rates.

The other technique is by anti-rusting electrolysis. Do an Web search for more info on electrolysis. Basically, use yer 2-amp battery charger ouput and a plastic buckett of water with weak WASHING SODA solution to "de-rust/de-corrode" yer offending parts. Connect one battery charger lead to the part and the other battery charger lead to a stainless-steel sacrifical annode. (spoon, knife, pancake turner, etc) Letter bubble for a while, like 1/2 hr. The part and the annode MUST NOT TOUCH. The stainless annode must bubble, iff'n it don't, swapp battery charger leads. All rust and paint will fall off the part iff'n done right..... ..HTH, Dell

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RustyAL

07-30-2005 19:56:46




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 Re: Idle jet removal drilling easy-out? in reply to Dell (WA), 07-29-2005 16:53:59  
Dell, Do you know if the elctrolysis eats the brass jet. Or does it just remove the junk jamming the jet.



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Dell (WA)

07-30-2005 21:49:02




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 Re: Idle jet removal drilling easy-out? in reply to RustyAL, 07-30-2005 19:56:46  
Rusty..... ...as far as I know, the electrolysis trick just removes iron oxide (rust) and doesn't eat brass. I have NEVER used the electrolysis trick on castiron M/S carbs. It's just something I remember reading about somewhere, sometime..... ..Dell, who has CRS and CRFT



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RustyAL

07-31-2005 05:44:07




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 Re: Idle jet removal drilling easy-out? in reply to Dell (WA), 07-30-2005 21:49:02  
Thank you for your reply.



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Popster

07-29-2005 17:36:19




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 Re: Idle jet removal drilling easy-out? in reply to Dell (WA), 07-29-2005 16:53:59  
third party image

Dell,

Thanks, will do. Another question... This is a 241 carb. Where is the main jet? I can't locate it down that rectangular hole. Is the main jet at the other end where the long fuel mixture needle contacts it?

At the base of my carb's bowl by the main nozzle, there is a hole with nothing in it.

Thanks.

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Dan

07-29-2005 18:10:43




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 Re: Idle jet removal drilling easy-out? in reply to Popster, 07-29-2005 17:36:19  
The main jet is under the main nozzle as it is labled on your pic. You will notice a hex bolt pattern close to where it mates with the carb body. Use a deep well socket to unscrew this main nozzle and deep down in that hole is the main jet. Leave it be if at all possible. If you HAVE to remove it and it is buggered up, you will need to drill it out.

Drilling out jets - the jets are made of brass - MUCH softer than the carb body. Start with a very small drill bit and let it use the jet center hole to center the bit. Get progressively larger until you can JUST see the carb body threads. Then use a tap and run it through the threads to clean the remaining brass out. I have done this with several jets - it is time consuming but works every time. Do not use an easy out - it will be an exercise in futility.

Good luck,
Dan

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