Welcome to the North American Subaru Impreza Owners Club Monday September 27, 2021
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 09-10-2021, 05:50 PM   #1
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default Any machinists in here?

Trying to source a bottoming extended length M14x1.5 tap. It has to be at least 8 inches long. Either my googling sucks or I'm looking in the wrong places. I need this to tap the block I'm working on for IAG 14mm studs.
* Registered users of the site do not see these ads.
alexmartynyuk is online now   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 09-11-2021, 12:03 PM   #2
fwillyj
Scooby Newbie
 
Member#: 165640
Join Date: Dec 2007
Location: taylorsville Ut.
Default

---there is a place on the internet in new york "Victornet"

--they'll make any tap you need basically to your specs---and the price is decent---seems like around $25 or so---and only takes a couple of days

---problem is you need to know exactly what you want and you'll need to call them
--------------------------------------------------
--I have done maybe two Subarus for oversize studs

--pretty sure I did 1/2-13 lower threads--had to ream out the bolt holes down thru the heads---might have had to spotface the washer area

---looked in my stuff and the only extra long tap I have is a 14x1.75 that is 12.5" overall length

---I have four 1/2-13 taps from 6 to 8" overall length

---one of these 8" was made extra long but I had to machine down the shank diameter

---so I'm pretty sure the Subaru stud jobs I did were 1/2-13 or 14x 1.175mm

---and none of these are bottoming taps
------------------------------------------------------
---looking at the head stud suppliers they are really vague about giving you exact dimensions like diameters and the thread and the shank lengths etc
-------------------------------------------------------

---I have bought from Victornet several times with very pleasant results

Last edited by fwillyj; 09-11-2021 at 12:29 PM.
fwillyj is offline   Reply With Quote
Old 09-11-2021, 02:01 PM   #3
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

Quote:
Originally Posted by fwillyj View Post
---there is a place on the internet in new york "Victornet"

--they'll make any tap you need basically to your specs---and the price is decent---seems like around $25 or so---and only takes a couple of days

---problem is you need to know exactly what you want and you'll need to call them
--------------------------------------------------
--I have done maybe two Subarus for oversize studs

--pretty sure I did 1/2-13 lower threads--had to ream out the bolt holes down thru the heads---might have had to spotface the washer area

---looked in my stuff and the only extra long tap I have is a 14x1.75 that is 12.5" overall length

---I have four 1/2-13 taps from 6 to 8" overall length

---one of these 8" was made extra long but I had to machine down the shank diameter

---so I'm pretty sure the Subaru stud jobs I did were 1/2-13 or 14x 1.175mm

---and none of these are bottoming taps
------------------------------------------------------
---looking at the head stud suppliers they are really vague about giving you exact dimensions like diameters and the thread and the shank lengths etc
-------------------------------------------------------

---I have bought from Victornet several times with very pleasant results
Thanks a ton man! Ill try to reach out to them. Yeah I found other taps that are about 224mm long but they are M14x2. IAG lists their 14mm head studs as M14x1.5 $25 seems too good lol. All other taps seem to cost $200+
alexmartynyuk is online now   Reply With Quote
Old 09-11-2021, 02:03 PM   #4
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

FwillyJ what was the overall length of your tap for the 1/2 studs you did?
alexmartynyuk is online now   Reply With Quote
Old 09-11-2021, 02:50 PM   #5
fwillyj
Scooby Newbie
 
Member#: 165640
Join Date: Dec 2007
Location: taylorsville Ut.
Default

--I have no idea about what I used for studs

---here's a story I wrote to myself when I did the 1/2 studs
------------------------------------------------------------------------------------------------

Subaru B25 style block gets half inch head studs


---I did some depth checks and machined some light witness marks on the tooling shanks to correspond with the top of the block deck.
---------------------------------------------------------
1---to tap the head bolt holes requires a 6" tap, a long .422" and a 5" long .515" reamer to do the 1/2-13 threads.

2---clamp the case to the mill.

3---install the drill chuck.


4---set rpm to 150 rpm

5---double check depths of hole to see if they correspond to witness mark rings machined onto the shanks of tooling.

6---eyeball center the .422" reamer and dry ream to bottom of hole to near the witness top ring mark machined on reamer shank.

7---install .515" reamer, dry ream to length of flutes plus about .090" to the machined witness ring.

8---remove the reamer and blow out the chips real good using a 6" long 90 degree air nozzle tip before installing the tap.

9---install the 6" long tap, lube with dark threading oil, normal plunge & prepare to stop
---coast to a stop and reverse at first machined witness mark on shank.

Last edited by fwillyj; 09-11-2021 at 05:42 PM.
fwillyj is offline   Reply With Quote
Old 09-13-2021, 12:32 PM   #6
rtv900
Scooby Guru
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by alexmartynyuk View Post
Thanks a ton man! Ill try to reach out to them. Yeah I found other taps that are about 224mm long but they are M14x2. IAG lists their 14mm head studs as M14x1.5 $25 seems too good lol. All other taps seem to cost $200+
Dude, you just need a tap extender, not a super long tap

The mention of somebody making a custom tap for $25 is mind boggling, no clue how anybody could do that.

just get an extender. It's just a rod with an end for the tap and an end for a tap holder, just like a tap.
Go to MSC.com and type in Tap Extension
rtv900 is offline   Reply With Quote
Old 09-13-2021, 05:01 PM   #7
junebugfareast
Scooby Newbie
 
Member#: 167468
Join Date: Dec 2007
Chapter/Region: TXIC
Location: H-Town
Vehicle:
2004 STI
White-ish

Default

Quote:
Originally Posted by rtv900 View Post
Dude, you just need a tap extender, not a super long tap

The mention of somebody making a custom tap for $25 is mind boggling, no clue how anybody could do that.

just get an extender. It's just a rod with an end for the tap and an end for a tap holder, just like a tap.
Go to MSC.com and type in Tap Extension
Now I feel sheepish about having thought I was clever and fabricating one myself. Should have known something like that would be COTS.
junebugfareast is offline   Reply With Quote
Old 09-13-2021, 10:01 PM   #8
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

i have thought about a tap extension but it may be too wide to fit the block. unless there are super low profile ones. I was able to get in touch with a company that can make a custom tap in Germany but its probably gonna take too long.
alexmartynyuk is online now   Reply With Quote
Old 09-14-2021, 09:31 AM   #9
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Mooresville, NC
Vehicle:
96 3MI Racing
search FIRST, then PM!!!

Default

Quote:
Originally Posted by rtv900 View Post
Dude, you just need a tap extender, not a super long tap

The mention of somebody making a custom tap for $25 is mind boggling, no clue how anybody could do that.

just get an extender. It's just a rod with an end for the tap and an end for a tap holder, just like a tap.
Go to MSC.com and type in Tap Extension
The problem with extenders that I've seen is their too large of an OD to fit into the hole.
Have one that actually works that you recommend?
Homemade WRX is offline   Reply With Quote
Old 09-14-2021, 12:12 PM   #10
rtv900
Scooby Guru
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by alexmartynyuk View Post
i have thought about a tap extension but it may be too wide to fit the block. unless there are super low profile ones. I was able to get in touch with a company that can make a custom tap in Germany but its probably gonna take too long.
Well the "custom tap made in Germany" thing should answer that question.
It's going to cost half as much as the block and you'll get it come spring time.
Plus, if you are doing this by hand I can tell you starting off with a bottoming tap is asking for trouble. A good bottom tap will barely have any lead on it (hence bottoming) so starting it by hand straight will be hard as hell. If you get it started crooked you are screwed.
If it were me I'd use a gun tap to start (it will have a huge lead on it and pilot in straight) and then go back again for the bottoming.

Quote:
Originally Posted by Homemade WRX View Post
The problem with extenders that I've seen is their too large of an OD to fit into the hole.
Have one that actually works that you recommend?
Well I don't have one that works in that application because I haven't done that exact job, but we have tons here and use them all the time. Any time I see them in use the body of the extender doesn't appear to be any bigger than the body of whatever tap it uses.
But I'll admit I don't really know how small a hole he has to go down into.
rtv900 is offline   Reply With Quote
Old 09-14-2021, 06:15 PM   #11
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

Definitely not going to do it by hand, It will be done by my local machine shop i'm working with.

I'm hoping to avoid having a custom one made because of the wait time and cost. The taps are somewhere out there as there are a lot of machinists installing the 14mm studs. Just a matter of finding them I guess.
alexmartynyuk is online now   Reply With Quote
Old 09-15-2021, 08:31 AM   #12
rtv900
Scooby Guru
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by alexmartynyuk View Post
Definitely not going to do it by hand, It will be done by my local machine shop i'm working with.

I'm hoping to avoid having a custom one made because of the wait time and cost. The taps are somewhere out there as there are a lot of machinists installing the 14mm studs. Just a matter of finding them I guess.
And this machine shop is conveying to you that they don't know what to do with the reach situation of the tap?????
rtv900 is offline   Reply With Quote
Old 09-15-2021, 11:32 PM   #13
*6STARS*
Scooby Newbie
 
Member#: 205327
Join Date: Mar 2009
Chapter/Region: SWIC
Location: New Mexico
Vehicle:
2006 WRX TR
1970 Camaro

Default

Look at MSCdirect.com or McMaster Carr for what's called a pulley tap. They are long taps not sure you'll find one the length you need but give it a shot. Also look up Walton tap extension that what I have in my box at work. You may be right about the OD of the extension. It fitting in the hole. Good luck

Edit: you can also just buy a standard tap have the shop turn down the shank to a small diameter (so the extension wall thickness isn't very thin) and then drill a hole in a piece of steel 1/2" in diameter or so and drill and tap for a set screw or two to hold the tap. I have also brazed taps into extensions. Hope this helps

Last edited by *6STARS*; 09-15-2021 at 11:39 PM.
*6STARS* is offline   Reply With Quote
Old 09-17-2021, 01:25 AM   #14
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

Quote:
Originally Posted by rtv900 View Post
And this machine shop is conveying to you that they don't know what to do with the reach situation of the tap?????
He's doing what he can on his end but has limited time so I'm doing what I can on my end in my own interest so that we can get this project done. He is currently equipped to do 1/2 head studs on EJ blocks and the tap he uses is about 7". I was able to find a couple taps right around 7-8" Will see if he can get his machine set up for one of them and give it a test hit. Will report once he gets to it but it will probably be another month since the tap is only gonna show up late October. I'm trying to avoid making a custom one or braising as I don't know how well it will hold up at high speed in the CNC machine. If anyone else has any other sources that might have a long tap please do share!
alexmartynyuk is online now   Reply With Quote
Old 09-17-2021, 01:36 AM   #15
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

Quote:
Originally Posted by *6STARS* View Post
Look at MSCdirect.com or McMaster Carr for what's called a pulley tap. They are long taps not sure you'll find one the length you need but give it a shot. Also look up Walton tap extension that what I have in my box at work. You may be right about the OD of the extension. It fitting in the hole. Good luck

Edit: you can also just buy a standard tap have the shop turn down the shank to a small diameter (so the extension wall thickness isn't very thin) and then drill a hole in a piece of steel 1/2" in diameter or so and drill and tap for a set screw or two to hold the tap. I have also brazed taps into extensions. Hope this helps
I have looked through msc and mcmaster but had no luck finding a long M14 x 1.5 tap. Looked at extension taps and pulley taps. Modifying a tap is something i'm considering but trying to avoid it for now, but good idea tho!
alexmartynyuk is online now   Reply With Quote
Old 09-17-2021, 01:38 AM   #16
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

Not sure if we are allowed to post links but giving this one a try first:
https://www.gavantools.com/collectio...29891403546723



and also have my eyes on this one:
https://www.grainger.com/product/OSG...ion-Tap-54MF03


Last edited by alexmartynyuk; 09-17-2021 at 01:59 AM.
alexmartynyuk is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 03:54 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.