KMASS993

I am trying to remove the intake trumpets to replace the seals and clean the injector seats for my new cleaned injectors. I managed to get one trumpet off with no issues; however, the other side is giving me trouble, one of the bolts doesn't want to turn and one other is broken loose but is giving me some resistance as I unscrew. Does anyone have any experience with these bolts breaking? The last thing I need is a broken bolt or a thread destroyed in the head. Just wanted to get some feedback if anyone has encountered. Thanks!

Kevin

bobt993

Kevin, I have had that very problem. They may have been over-torque'd prior. Unbolt what you can first. Hopefully the one that is stubborn is out enough that should it break you have some material to get a hold of. I have used a small Dewalt electric impact on them to try and free them up. Shove some clean paper towel down the intake into the head to avoid any debris getting into the valve/cylinder and try some PB blaster around the head by the bolt shaft. They usually come loose even though stubborn. If you can get 2 bolts out you can wiggle the entire unit a bit to make sure it is free and only holding at the head. Replace the hardware when re-installing. Also clean each intake really well. There will be a lot of grime on the lower part near where they attach to the heads.

KMASS993

Thanks Bob. I do think they were over torqued as on the the trumpets is cracked a the bolt hole. I have all new hardware for them coming tomorrow. I noted they were pretty nasty looking and definitely had a cake built up on the walls.

KMASS993

Bob -

Have some bad news, two of the bolts snapped right off on removal. It looks like there was a lot of corrosion, must be from the rain and the Turbo tail that came on the car. I am not really sure where to go next, but I am open for suggestions. One of the bolts has enough to possibly get a wrench or other tool on it, the other is pretty short and looks like it could be difficult to remove. Expertise would be appreciated!

jo-hans

That sucks!

I am thinking bolt removal socket for the long one and bolt extractor for the short one.

KMASS993

Tell me about it! I've been watching some youtube videos utilizing the extractors, however these babies are quite small, I just hope the above tools work on this size.

berni29

Hi

Over the course of a few days I would be using PB, and also shocking what remains of the bolt by hitting it sharply. Also I would fashion a heat shield and use a blowtorch on it without going mad.

Berni

KMASS993

Thanks for the tip Berni, I will have to pick up some PB blaster tomorrow and start working it in. I don't think that I am going to be able to work with a blow torch unfortunately. What is the purpose of the blow torch?

jo-hans

Yes PB soak and heat. The heat may crack the bolt loose from movement of the expansion and contraction of the different metals.
Then the extractors are probably the only option to remove them before drilling the bolts out completely and retreading.

TravisB

I had this exact problem..well, both of mine broke almost flush with the port at least. It wasn't fun, not going to lie. I wound up using a dremel to grind the remaining bolt stub flat, center punching and attempting to use an extractor, heat, penetrating oil, etc. No luck with that, I wound up drilling more and using Helicoils.

geolab

removed about a dozen broken ones now. Bought all kinds of extractors etc. Even welded bolts over the studs, etc. Easiest and most efficient way I found is this: with some cutting oil...

http://www.qbaroo.com/quikcentercom/

next time, get a heat gun with a 7mm adapter tip.
Get it on 450* celcius on the bolt for 45 seconds. It will come out very easily.
The heat will melt the blue loctite thread locker.
Even if the black intake pipes will melt a bit, they are a tenner each, and they will not melt, because there is a metal cylinder around each bolt.
If you need assist. with the quickcenter, let me know.

KMASS993

Geo-

what is the difference between the coarse and fine thread?

geolab

fine thread has a more tipped thread cross-section and catches better. those
are the ones I have.
remember, you just need the cone to catch slightly.
In those studs on the intake, below the stud there is a good empty space, so after
you finish, you need to vacuum the tiny holes a bit...
The one that is protruding good, just a heat gun and lock pliers.
heat gun with a small tip, really really works.
I have a Steinel HG 2310 LCD, works magic

KMASS993

Ordered a set, will be contacting you once I start the process for sure!

geolab

great, and please do not worry, been there done that