thread chasher for head studs? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 09-06-2009, 07:45 PM   #1
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Aug 2008
Location: Evansville, Indiana
Posts: 314
Total Cats: 0
Default thread chasher for head studs?

i went to bolt the head on my motor today. i oiled the threads on the studs and threaded them into the block. they're all over the place, some are threaded in a half inch further than others.

what size thread chaser do i need to run down the holes?
DrewLGT is offline   Reply With Quote
Old 09-06-2009, 07:53 PM   #2
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

I had the same problem and had trouble sourcing the right thread size for the head studs so this is what i did and its FREE.

get one of your old head, (assuming you got your old ones still since you DID GET NEW new head studs like you should have, right?)

get a cut-off grinder with a thin fiberglass cut off wheel and cut 4 slots into the threads of the old head bolt that resembles a thread chaser

once thats done, clean it off any metal flakes and oil up your new "thread chaser" and "chase" the threads in the block.

remember to clean the chaser after every hole you do.

goodluck!
railz is offline   Reply With Quote
Old 09-06-2009, 08:08 PM   #3
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Aug 2008
Location: Evansville, Indiana
Posts: 314
Total Cats: 0
Default

my old head, and the bolts that go with it are currently helping power the car....

i guess i'll go buy a new bolt at the hardware store and sacrifice it for the cause
DrewLGT is offline   Reply With Quote
Old 09-06-2009, 10:10 PM   #4
Junior Member
iTrader: (4)
 
Join Date: Oct 2006
Location: Alberta Canada
Posts: 228
Total Cats: 5
Default

I used a wire wheel like a bottle brush or a rifle cleaner in my cordless drill, with some brake cleaner, then compressed air to blow out the holes. Worked like a charm.
Alta_Racer is offline   Reply With Quote
Old 09-06-2009, 10:55 PM   #5
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

if you want i can ship you my "thread chaser" =P just cover the shipping cost which should be like 2 bucks
railz is offline   Reply With Quote
Old 09-06-2009, 11:53 PM   #6
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,357
Total Cats: 1,322
Default

The head studs sit at funky heights. You drop the head on and suddenly they all look right - the heights of all the various holes in the head is different, and the block holes are deeper to correspond.
Savington is offline   Reply With Quote
Old 09-07-2009, 12:01 AM   #7
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Aug 2008
Location: Evansville, Indiana
Posts: 314
Total Cats: 0
Default

Quote:
Originally Posted by Savington View Post
The head studs sit at funky heights. You drop the head on and suddenly they all look right - the heights of all the various holes in the head is different, and the block holes are deeper to correspond.
that may be true, but i dropped the head on, and there are a few suds where the nut wouldnt even touch the head if it was threaded all the way on the stud.
DrewLGT is offline   Reply With Quote
Old 09-07-2009, 12:26 AM   #8
Elite Member
iTrader: (12)
 
Join Date: Aug 2006
Location: Central-ish VA
Posts: 4,449
Total Cats: 16
Default

I think all are the same hieght except the front 2 are like 1/2" higher. But it sounds like you have another issue.
neogenesis2004 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:44 AM.