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Stripped head stud hole, need some info!

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Old 04-04-2011, 08:27 AM
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Default Stripped head stud hole, need some info!

The threads from one hole, came out with the stud in my block when I took it apart last. I took it to the local machine shop and they put a helicoil in it.

Long story short, the helicoiled stud wouldnt tq down properly during assembly. The helicoil threads were completely wrecked.

The machine shop wanted to use an insert this time, but they cant seem to locate an insert to work for the thread pattern of my stud.

Does anyone know where I can find an insert that will work?
Or will I just have to oversize and go with a different stud.
I dont want to have to machine the head for every hole if I go with an oversize set of studs.

Im using ARP studs

What should I do?
Old 04-04-2011, 08:30 AM
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Default Re: Stripped head stud hole, need some info!

I watched a dude awhile back put in 3 or 4 Time Serts in a GSR block. Far as I know they held, the kit can be a little expensive though.
Old 04-04-2011, 08:32 AM
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Default Re: Stripped head stud hole, need some info!

Helicoil No Timeserts Yes!
Old 04-04-2011, 08:40 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by civic eg
Helicoil No Timeserts Yes!
Never ever put helicoil on stud hole or anything in that matter .... it won't work. you have to think your torquing 80+ftlbs and you think heilcoil or timeserts will repair it? lol
not to mention, OP's car is boosted.

to the OP, just get a different block or you can just take it to the machine shop with different size stud and im sure they'll take care of you.
yes, you'd have to drill your cyl. head out to fit oversize studs but most machine shops do that so no worries.

hope this help you out buddy.
Old 04-04-2011, 08:44 AM
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Default Re: Stripped head stud hole, need some info!

the "different block" idea isnt an option.

Its a GE sleeved, o-ringed block. not just stock.
Old 04-04-2011, 08:47 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by Topdawgg
the "different block" idea isnt an option.

Its a GE sleeved, o-ringed block. not just stock.
Then oversize stud it is.
Old 04-04-2011, 09:02 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by 95exdsmkilla
Never ever put helicoil on stud hole or anything in that matter .... it won't work. you have to think your torquing 80+ftlbs and you think heilcoil or timeserts will repair it? lol
not to mention, OP's car is boosted.
Any first hand information you can share that would show a timesert to not work or how you determined they dont work. If honda-tech's search was not so wack, its been discussed a few times and people have sucessfully used timeserts in boosted application without issue. In fact they are stronger than the original threads in the block.

I would agree on the HC though.

Edit: Timeserts are expensive though and you might weigh the cost of them installed vs the cost of having block/ head machined for larger headstud and new studs.
Old 04-04-2011, 09:15 AM
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Default Re: Stripped head stud hole, need some info!

Like I said, I have seen a guy do 3 or 4 Time Serts in a GSR block and have known of others doing them in boosted applications and they held. I have also been told that the threads in them were actually stronger than the stock threads in the block.
Old 04-04-2011, 09:36 AM
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Default Re: Stripped head stud hole, need some info!

There is a kit called big cert for honda head bolt thread repair. I can give you the part number for the actual inserts when i get back to my shop.

http://www.denlorstools.com/home/dt1...pair_kit_.html


A properly done time cert is stronger than the orginal threads.
Old 04-04-2011, 09:48 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by twkdCD595
Any first hand information you can share that would show a timesert to not work or how you determined they dont work. If honda-tech's search was not so wack, its been discussed a few times and people have sucessfully used timeserts in boosted application without issue. In fact they are stronger than the original threads in the block.

I would agree on the HC though.

Edit: Timeserts are expensive though and you might weigh the cost of them installed vs the cost of having block/ head machined for larger headstud and new studs.
hey mr. i know it all, "few times". most real builder would just get over size stud and call it a day. not this additive.... its called engineering, not like a lego. thread can be stronger but block is still alumn. but im not gona argue whos got bigger dick, im just trying to help another honda fella out
Old 04-04-2011, 09:59 AM
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Default Re: Stripped head stud hole, need some info!

Time serts are definitely a permanent fix. We bought our kit from a company that had the metric threads including Honda/Acura. Let me know if you can't find anything, I'll do some digging. Expect to pay about 200-300 for the kit unless you can find a shop that has the kit already.

We haven't pushed a block with time serts but we have had no problems on some 700 hp v8 blocks on the dyno.
Old 04-04-2011, 10:02 AM
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Default Re: Stripped head stud hole, need some info!

We invested in all the Timesert kits years ago and they are well worth it for shops/builders who do alot of blocks. Each kit is about $400-500 so the average racer isnt going to buy it. Look for a local shop or any of the engine builders who specialise in Hondas in your area to see if they have any of the Timeserts.

Helicoil is NEVER a solution for head stud threads. Thats bad news right there. Most likely the standard Timesert wont work if its already helicoiled. There is a chance that the Bigsert, which is the oversized thread insert after the standard one may work.

The way it works is the existing threads are drilled out and the smoothed out. Its kinda of like "sleeving" a thread. You're prepping the existing thread and overboring the hole to accept a new sleeve. So the Bigsert is pretty much a bigger thread sleeve.

In my opinion, timeserts are stronger than the original threads themselves. You're not worrying stripping the threads when you have to torque down the head like you do with OEM.

Timeserts are only sold through certain distributors so check out www.timesert.com for the nearest distributor near you. They can also help you find a local place that may carry machinist tools. Some may stock certain timesert kits. But pretty much for the Honda stuff, you have to go to distributors like threadkits.com
Old 04-04-2011, 10:11 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by ExospeedAMcrx
Helicoil is NEVER a solution for head stud threads. Thats bad news right there. Most likely the standard Timesert wont work if its already helicoiled. There is a chance that the Bigsert, which is the oversized thread insert after the standard one may work.


The big cert kit will work if someone already attemted to helicoil it. Its designed as a second try kit.
Old 04-04-2011, 10:16 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by sewell94
The big cert kit will work if someone already attemted to helicoil it. Its designed as a second try kit.
I've seen some bad Helicoil jobs and the bigsert didnt work. LOL.

But ya, if it was a good helicoil work to begin with, it shouldnt have taken out that much material in the hole and the bigsert thread will fit.
Old 04-04-2011, 10:30 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by ExospeedAMcrx
I've seen some bad Helicoil jobs and the bigsert didnt work. LOL.

But ya, if it was a good helicoil work to begin with, it shouldnt have taken out that much material in the hole and the bigsert thread will fit.
There are always exceptions for those people who are the "special" LOL
Old 04-04-2011, 10:37 AM
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Default Re: Stripped head stud hole, need some info!

special people need to understand what an aluminum block is. lol
will, wheres our fuel tank? LOL
Old 04-04-2011, 10:56 AM
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Default Re: Stripped head stud hole, need some info!

ive used the time-sert kit myself a little pricey but works great. It takes time to do it so be patient and i would HIGHLY recommend completely taking apart the motor to do it. they also make a kit for holes that have been helicoiled and failed its an oversize insert for a regular size stud. Once you do use inserts u must use ARP Studs. Golden Eagle\AEBS\A1 tech will split the block in half due to the way they bottom out against the bottom of the block and not the top of the insert like the arp's. Usually the block gives before the steel insert will. Goodluck
Old 04-04-2011, 10:58 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by 95exdsmkilla
special people need to understand what an aluminum block is. lol
will, wheres our fuel tank? LOL
Simon? LOL. Ya got done Friday. Going out now. Isnt Bee coming out to go fishing out here this week?
Old 04-04-2011, 11:35 AM
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Default Re: Stripped head stud hole, need some info!

timesert only! rs machine has them all the time. i timesert all my blocks from now on. its truly the only way to torque heads.
Old 04-04-2011, 11:38 AM
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Default Re: Stripped head stud hole, need some info!

Timesert will hold a head stud much stronger than the stock configuration. Its the only way to go when a hole blows out.
Old 04-04-2011, 11:41 AM
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Default Re: Stripped head stud hole, need some info!

Originally Posted by 95exdsmkilla
hey mr. i know it all, "few times". most real builder would just get over size stud and call it a day. not this additive.... its called engineering, not like a lego. thread can be stronger but block is still alumn. but im not gona argue whos got bigger dick, im just trying to help another honda fella out
Your the one coming off as thinking your opinion is gospel and getting an attitude Captain America. Maybe you could help out and enlighten your fellow honda owner with some kind of explination next time instead of a sarcastic statement followed by LOL. Then maybe no one would find the need to burden you by asking how you came to the conclusion they would not work, especially in a boosted application.

Yes, a few times... as in I don't have an exact count but more than a couple. Given that reputable builders participated in those threads (which you know since nothing escapes someone as amazing as yourself), I figured its sufficient basis for me to question why you think they would would not work.

I realize now my error in asking for someone of your stature to enlighten us lowly huddled masses beneath you with some kind of additional information to go with your short statement.

Old 04-04-2011, 11:56 AM
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Default Re: Stripped head stud hole, need some info!

yea will it's me. lol
and twickd yea whatever you say, you win lol
Old 04-04-2011, 12:07 PM
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Default Re: Stripped head stud hole, need some info!

Timesert.. /
Old 04-04-2011, 12:38 PM
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Default Re: Stripped head stud hole, need some info!

ive timeserted 5 out of the 10 head stud holes in my block and boosted forever without a problem.

i bought the kit for the headbolt holts directly from timesert..it was not cheap.

http://www.timesert.com/html/honda.html
Old 04-04-2011, 01:04 PM
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Default Re: Stripped head stud hole, need some info!

i time sert my last motor and i made over 600 and not one problem.
after doing the time serts the studs felt sturdier then stock threads.


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