85 exhaust manifold bolt and nut stripped

[BirdDog]

Has anyone  put a hela coil in while the head is still in the truck? it is the far rear nut and the bolt in the rear by the firewall. Or should it all be pulled out.

[WHITE_TRASH]

Its not that bad to drill it while its still in the truck.  Unless you have a fight angle drill youll need to pull the booster and master I think.  Id also use every drill bit I had in stepping up to the correct size just to make sure that the hole stays straight.

[BirdDog]

Thanks W/T I'm going to try it on my next day off. Any other help would be appreciated.

[WHITE_TRASH]

you want further advice?  Its gonna cost ya $1.25 per post.  The consultation is a freebie!  lol

[Bazzi]

I once dit that exact same thing.  just be carefull to keep the drill straight.
and drill deep enough

afterwards I had worryes about the (metal falling off the drill) (dont know the english word)     please tell me
it should be better to try and clean that out of the engine.  But I just started the engine up and dit not seem to have any trouble.

[WHITE_TRASH]

The word your looking for is shavings. 

[Bazzi]

shavings huh nice one,
those tech words aren´t tought in school

[Prismo]

I used a right angle drill, was not hard to do. Tear peices off of a rag & stuff the pieces in the exhaust ports while you drill & tap. Stuff the rag far enough in so the drill won't catch it (it makes a cool twirly rag if you don't). Remember to take the rag peices out before bolting the exhaust on (they do look kind of cool at night when blown flaming out of the exhaust pipe)
Here is a link from PBB that may help you
http://www.pirate4x4.com/forum/showthread.php?t=237057

[brainlessfool]

yup, it's no big deal . just keep it str8.   not for this job butt if your ever consered about the stuff falling off the bit try loading the drill fluts with grease. it will trap all the "stuff" off the drill and hold it. just clean it alot.   


  Hey WT, your you sure about shavings?? I thought thats what I had in the bank. 

[BirdDog]

 

[Marlin]

Have you tried installing a looonger stud? If your truck has the factory stud installed, there may still be good treads left in the head.
I have used exhaust studs from a late 80' Cressida six cylinder, they are about 1/2" longer and may be enought to make it last untill you have a reason to pull the head.
To install the longer stud, remember to double nut them so you dont' mess up the threads.
The studs are 10x1.25mm fine thread.

Marlin

[BirdDog]

no I havent tried anything yet but both the very rear stund is stripped and the very rear bolt hole. I am going to be in fresno on tuesday I may stop by and see if you have anything that could help.

W/T at those rates I would think you could finally move out of that Trailer Park...

[WHITE_TRASH]

LOL I was wondering if youd catch that.  

[BirdDog]

Yah I caught it . Just working alot of hours so not much time at the end of the day and kinda slow.

[84runner]

My only suggestion would be to use something besides hela coil , there not the best . The have pretty much the same thing out called Time serts I think. It's pretty much a little steal pipe threaded inside and out. Works the same way but alot stronger. I believe Marlin uses them on his heads. But they may be called something different

[BirdDog]

Thanks 84 I will see Marlin Tomorrow and ask him if he has any.

[hawaii500_1999]

yes timserts rock!  i don't use helicoils anymore. 

the longer stub marlin mention i've done too, except i went to a hardwre store and bought a long bolt that was threaded all the way up to the head and hack sawed the head off and wala!  new longer length stud.

[Marlin]

Time serts are a much better repair and will not unwind like a heil-coil.
However, time serts will not work for everthing.

For instance, because a time sert requires a recessed counterbore due to the collar at the top of the insert, it cannot be used for the 22R cam caps because of the alignment dowells.
Also, the top oil pump bolt located at 12 o'clock would result in a pressure leak due to the overbore of the time sert insert.

Due in part to their self locking design, time serts are a permanent repair for the exhaust threads, and i install a complete set on my rebuild heads.

Marlin

[Prismo]

I never knew about the Timeserts. I have always used the Helcoils. Learned something new again today. Thanks guys. Marlin, do you know the kit number for the exhaust studs?

[84runner]

Due in part to their self locking design, time serts are a permanent repair for the exhaust threads, and i install a complete set on my rebuild heads.

Marlin

I know this cause I have a Malin head and even has the Marlin Logo on it 

[BirdDog]

Hey Marlin Thanks again for the help on Wednesday. So far I just had to install 3 of the larger studs and it has held up till now. Hopefully I wont need to do the Time Serts. Either way I will see you on Tuesday.
I forgot the name of the co. you said that you bought your U.S. made floor jack from if you can post it here I want to look up their web site.

John...