Stripped head stud hole, need some info!
#1
Honda-Tech Member
Thread Starter
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?
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?
#2
Honda-Tech Member
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.
#4
Re: Stripped head stud hole, need some info!
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.
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.
#5
Honda-Tech Member
Thread Starter
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.
Its a GE sleeved, o-ringed block. not just stock.
#6
#7
Re: Stripped head stud hole, need some info!
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.
Trending Topics
#8
Honda-Tech Member
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.
#9
Honda-Tech Member
Join Date: Sep 2003
Location: port st lucie, florida
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
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.
http://www.denlorstools.com/home/dt1...pair_kit_.html
A properly done time cert is stronger than the orginal threads.
#10
Re: Stripped head stud hole, need some info!
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.
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.
#11
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.
We haven't pushed a block with time serts but we have had no problems on some 700 hp v8 blocks on the dyno.
#12
Honda-Tech Member
Join Date: Mar 2002
Location: www.exospeed.com, Valencia, CA
Posts: 12,899
Likes: 0
Received 1 Like
on
1 Post
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
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
#13
Honda-Tech Member
Join Date: Sep 2003
Location: port st lucie, florida
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
Re: Stripped head stud hole, need some info!
The big cert kit will work if someone already attemted to helicoil it. Its designed as a second try kit.
#14
Honda-Tech Member
Join Date: Mar 2002
Location: www.exospeed.com, Valencia, CA
Posts: 12,899
Likes: 0
Received 1 Like
on
1 Post
Re: Stripped head stud hole, need some info!
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.
#15
Honda-Tech Member
Join Date: Sep 2003
Location: port st lucie, florida
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
Re: Stripped head stud hole, need some info!
There are always exceptions for those people who are the "special" LOL
#17
Honda-Tech Member
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
#19
Honda-Tech Member
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.
#20
Honda-Tech Member
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.
#21
Re: Stripped head stud hole, need some info!
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
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.
#24
Honda-Tech Member
Join Date: Jul 2006
Location: missouri
Posts: 4,009
Likes: 0
Received 0 Likes
on
0 Posts
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
i bought the kit for the headbolt holts directly from timesert..it was not cheap.
http://www.timesert.com/html/honda.html
#25
Honda-Tech Member
Join Date: Nov 2003
Location: Tampa, FL, usa
Posts: 1,135
Likes: 0
Received 0 Likes
on
0 Posts
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.
after doing the time serts the studs felt sturdier then stock threads.