crank!!!

[94mtx]

does any one have any ideas on this...i messed up my threads on the crank while i was removing the crank pulley. so i need to use a tap and just clean up the threads a bit. but (isnt there always a but) no one has anything bigger than a 12mm and the it is like a 18mm!! went or called sears, homedepot, autozone, napa, firestone. machine shops are closed for the weekend. damn it!! other than this little snafu everything with the waterpump/timing belt change is going good.

jon

 

[rangerj]

94mtx,

Let your fingers do the walking! Look for a place that supplies machine shops with "tools" like taps, dies, grinders, burrs, etc., if you cannot find a local machine shop that will loan or sell you the correct size tap. rangerj

 

[projectSHO89]

http://www.shoforum.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=17;t=003777#000008

Still have it sitting on my desk!

Steve

 

[94mtx]

steve,
is it a M14 X 1.5 for the crank?? it looks a lot bigger. and since the head size it 19mm, the bolt diamter doesnot look much different, i think it is 18mm. i will try ford tomorrow. doubt it but worth a shot. does anyone know how to to get in touch with a local snap on dealer?? i couldnt find out on their website and did not see them listed in the phone book. i will look tomorrow also, kinda angry right now, might have missed it.

jon

 

[Off Road SHO]

RangerJ has the right idea. There is a tool called a thread file that is four sided and about a half inch square. It has two different thread pitches on each side. You'll need a metric one. It is however, hard to do an inside thread with a thread file, it's made more for bolts. A thread chaser or a bottoming tap is what you really need.

Tom

 

[94mtx]

tom,
rodger that on the bottoming tap, but...no one has one!!! i will try to find a thread file, anything right now. does anyone know the size and pitch of the crank bolt?? is it 18x1.5?? or something else.

jon

 

[projectSHO89]

Yes, that is the correct size. If you don't believe me, take the crank bolt to a hardware store that has metric nuts and try them until you get the one that fits. Start with the one that I said.

Also, most auto parts store have a guage for determining thread pitch and bolt diameters if you do not have a micrometer.

http://buy.snapon.com/catalog/pro_det.asp?tool=all&item%5FID=9772&group%5FID=1163&group%5Fname=Plug+Taps+and+Dies&sub%5Fcat%5FID=1402054&sub%5Fcat%5Fname=Plug+Taps+And+Dies&cat%5FI D=1402018&cat%5Fname=Threading&store=snapon%2Dstore&dir=catalog

Steve

 

[94mtx]

steve,
thanks for the info, i will check on that tomorrow, not that i dont belive you its just that its kind of important and my eyes tell me that it is bigger. tomorrow i hope things work out good for me.

jon

 

[AutoSHO]

94mtx:
steve,
thanks for the info, i will check on that tomorrow, not that i dont belive you its just that its kind of important and my eyes tell me that it is bigger. tomorrow i hope things work out good for me.

jon

You know, since all SHO motors are the same, and he has experience with using this tap, perhaps, maybe, he knows what he's talking about.

 

[pjtoledo]

Be a little carefull when using a tap to repair threads, that is not what they are designed for. If you start it wrong, the new threads it will cut might not match the existing threads deeper in the hole. A thread chaser is what you should try first. Similar to a tap, but it attempts to push the threads back into place, so the front of the hole matches the back of the hole.

Perry Toledo,Ohio

 

[94mtx]

steve,
it is what you said, but it still does not help me any, no local autoparts stores have anything bigger than a 12. i did go down to a garage and got excited when they had a 16x1.5 !!! but no 14?!?! there are grainger and harbor freight locally but they will not be open untill tomorrow, i hope they wont close for mlk day. i did not try to sound ungrateful for your help. trust but verify, and since its an important piece of the sho, thought id go the extra mile.

jon

 

[luigisho]

Jon, not sure if this helps or not, but if you check out the MAC tools site they sell rethread set for $15.99 which includes 14-1.50mm piece.

part# tr-8. There's more stuff there too.

<small>[ January 19, 2003, 03:09 PM: Message edited by: luigisho ]</small>

 

[94mtx]

luigisho,
thanks!! that is what i need, if i could get in touch with them i would get it, but.. being sunday and all but thanks alot for your help

jon

 

[projectSHO89]

Grainger won't have it (except in a large, special order set), Harbor Freight won't have it, Sears Hardware won't have it, no auto parts store will have it (I spent a day and a half looking for this thing). I checked the 5 largest suppliers of machine tools in St louis, none of them had it. I checked 5 machine shops, include 2 that specialized in imports, no one had it.

I ordered that tap from SnapOn's site, had it the next day and fixed the boogered crank thread in 2 minutes.

If you can find a thread chaser in M14 X 1.5, use it. Otherwise, your only choice is a tap. Sometimes, that's just the way the world works....

Rethread kit will likely be a helicoil set. You want to avoid that if possible.

Steve

 

[Marccus]

94mtx:
steve,
it is what you said, but it still does not help me any, no local autoparts stores have anything bigger than a 12. i did go down to a garage and got excited when they had a 16x1.5 !!! but no 14?!?! there are grainger and harbor freight locally but they will not be open untill tomorrow, i hope they wont close for mlk day. i did not try to sound ungrateful for your help. trust but verify, and since its an important piece of the sho, thought id go the extra mile.

jon

Metric thread chaser set available from a company called Kaster. Can purchase them online at mscdirect.com and others (forget names - do a search on Google with 'chasers kaster metric thread' keywords.

Also a Canadian company egc enterprises (I think) sells huge "*****" metric thread chasers for oil drains on large equipment. You can get M14, etc and larger. I bought my M14 x 1.5 thread chaser here for my oil drain plug female threads.

Heed the advice, use a thread chaser if at all possible - not a tap - ESPECIALLY if you are messing with threads in aluminum.

I learned the hard way and messed up the threads on the one of the intake manifold's bolt holes. I had to use a drill and install a thread insert to repair it.

In the worse scenerio, you may have to use a thread insert. Best kit I have found is the Time-Sert Kit. Used by many Porsche people. Comes with all the tools necessary to do the job - drill, counterbore, bottoming tap, and installation device. Expensive but worth the money. It uses solid inserts (available in SS) not the coil type.

 

[luigisho]

Steve, that rethread kit didn't seem to have any inserts (ala helicoil). I haven't used anything but a helicoil so far. How about taking a look at that set over at http://www.mactools.com (part# TR-8) and tell me what you think. I may get a 'just in case kit' considering the low price.

 

[Marccus]

The Time-Sert kit should come with 5 carbons steel inserts of normal length. You can purchase separately stainless teel inserts of normal length (11mm I think) and longer length (16 mm I think).

Time-Sert is located in Nevada (I think!). You buy direct from them. They are extremely helpful and knowledgeable. An M8 x 1.25 kit costs me about $45. Yeah - expensive. The individual inserts are pricey too - one "long" SS 8mm insert is about $1.00.

Heli-coil is very popular and used by many. However, I don't like the "coil type insert and prefer a solid one. I think both types meet MIL standards so it's just a matter of preference.

Also, with the Time-Sert system, if you screw up and don't drill deep enough so the insert doesn't screw in all the way and seat properly at the counterbore surface, you MUST use a screw extractor of proper size so that it grabs the insert. You rotate the extractor counterclockwise and remover the insert.

These inserts are blessing and a curse. Upon seating they expand and are "screwed" into the metal making them impossible to pull out. That's the blessing part! The curse part is getting them out - no problem If you use the proper tool!

You can at least call Time-Sert and receive their brochures and price list. You'll be impressed by the quality. But, as mentioned, the system is $$$.

 

[Ishodu]

94MTX Check you other post in the open fourm.