T25 VVT bolt seized in housing... - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 08-28-2015, 08:29 PM   #1
Mr Broke Pants
Thread Starter
iTrader: (9)
 
thumpetto007's Avatar
 
Join Date: Sep 2010
Posts: 1,599
Total Cats: 29
Default T25 VVT bolt seized in housing...

2001 LS

I'm trying to do a timing belt, water pump, valve cover gasket, but...

all the pieces that make the torx "star" are gone, I have a drill, new cobalt bits, and two different types of ez out...

Any of you have suggestions?
thumpetto007 is offline   Reply With Quote
Old 08-28-2015, 08:35 PM   #3
Mr Broke Pants
Thread Starter
iTrader: (9)
 
thumpetto007's Avatar
 
Join Date: Sep 2010
Posts: 1,599
Total Cats: 29
Default

do I need to remove the three torx bolts to remove the silver housing, or can I remove it using the outer, regular style bolts?
thumpetto007 is offline   Reply With Quote
Old 08-28-2015, 08:37 PM   #4
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,181
Total Cats: 2,581
Default

why are you removing all that just to do a timing belt?
18psi is offline   Reply With Quote
Old 08-28-2015, 08:51 PM   #5
Mr Broke Pants
Thread Starter
iTrader: (9)
 
thumpetto007's Avatar
 
Join Date: Sep 2010
Posts: 1,599
Total Cats: 29
Default

the intake cam seal is also leaking, unfortunately.

I also need to get the cam gears off, so I can remove the backing plate, it's preventing me from removing the water pump
thumpetto007 is offline   Reply With Quote
Old 08-28-2015, 08:52 PM   #6
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,181
Total Cats: 2,581
Default

I've had luck tapping with hammer as I'm twisting the screwdriver, but if yours is completely stripped then use those extractors....carefully.
18psi is offline   Reply With Quote
Old 08-28-2015, 08:54 PM   #7
Mr Broke Pants
Thread Starter
iTrader: (9)
 
thumpetto007's Avatar
 
Join Date: Sep 2010
Posts: 1,599
Total Cats: 29
Default

^****, I wish I thought of that...

Yeah, I've never used the extractor bits before, I'm a little tentative, which is why I stopped, took a break, and started this thread
thumpetto007 is offline   Reply With Quote
Old 08-28-2015, 08:55 PM   #8
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,796
Total Cats: 248
Default

I stripped mine, then got a new torx bit of the right size, hammered it into the screw, put a 3/8 ratchet on it, and started hammering on the ratchet (pushing the bit into the stripped screw) while slowly increasing the amount of torque on the ratchet to unscrew it. Works perfect, I've never failed to remove as tripped torx with this method. You gotta smash the crap out of the ratchet with a hammer though.
patsmx5 is offline   Reply With Quote
Old 08-28-2015, 09:00 PM   #9
Mr Broke Pants
Thread Starter
iTrader: (9)
 
thumpetto007's Avatar
 
Join Date: Sep 2010
Posts: 1,599
Total Cats: 29
Default

^so not a T25? I have a hardened t25 bit, but it's loose now...

I also have hardened, straight through screwdrivers, I could try that too?
thumpetto007 is offline   Reply With Quote
Old 08-28-2015, 09:02 PM   #10
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,796
Total Cats: 248
Default

I believe it's T27. Not sure though, I stripped mine with a T25.
patsmx5 is offline   Reply With Quote
Old 08-28-2015, 09:02 PM   #11
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,181
Total Cats: 2,581
Default

heating it up a bit might help too. but be careful since the vanes inside are plastic
18psi is offline   Reply With Quote
Old 08-28-2015, 10:38 PM   #12
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,992
Total Cats: 1,459
Default

<p>With torx bits a **** ton of pressure on the screwdriver is like the #1 thing.&nbsp;</p>
aidandj is offline   Reply With Quote
Old 08-28-2015, 11:33 PM   #13
Mr Broke Pants
Thread Starter
iTrader: (9)
 
thumpetto007's Avatar
 
Join Date: Sep 2010
Posts: 1,599
Total Cats: 29
Default

THANK YOU EVERYONE!!!!

SUCCESS!!!!

I thought, well, I'll try the hammer trick... I tapped a t30 into the bolt, then, using a ratchet, i tapped the head with a 2 pound sledge. AND POOF! came right out!

the intake cam seal was REALLY stuck on, using two different seal pullers i have, i ended up pulling the metal spring halfway out of the rubber seal, and then I finally could pull the seal out.

replaced water pump, that fat bitch of an o ring on the lower coolant passage, o ring on the top water passage tube thing, timing backing plate, and cam gears are back on, i put a TINY spot of anti seize on the three new torx bolts on the intake cam, so hopefully they'll be easier next time.

I used 19 ft/lb on the water pump and flange bolts, and 40 ft/lb on the both 17mm and 14mm cam bolts.

It's dark here now, so I cleaned up, and will do the timing belt and valve cover tomorrow.

Thanks again everyone! Really helped me in a jam!
thumpetto007 is offline   Reply With Quote
Old 08-28-2015, 11:38 PM   #14
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,181
Total Cats: 2,581
Default

Welcome. Glad that worked.
18psi is offline   Reply With Quote
Old 08-29-2015, 09:03 AM   #15
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,106
Total Cats: 518
Default

Vvt is closer to 60 ft/lbs. if a bolt is bigger, it'll rarely be the same torque spec.

Also with spinny things, loctite isn't a bad idea. Anti seize is. I'd personally use (with new screws) blue loctite.
curly is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Garrett Turbo, 1.8 Oil Pan, & Misc. Stuff nbdooey Miata parts for sale/trade 9 08-30-2017 10:50 PM
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 18 11-22-2016 10:01 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 AM


Thread Tools

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 04:43 PM.