So I did the TB mod last summer. Engine blew about a week later. I sell the car. Chris (buyer) tells me that there is JB Weld flakes ALL over inside the intake manifolds. I pulled the butterlies and the rod that held them, and used JB Weld to cover the holes that were left from the rod. Any comments? ANyone else had this problem? I am gettin another FC in the next few months (by end of May) and I wanted to do the TB mod again, but not if it will kill my engine!!!!

 

thanks for posting this...I just finished the tb mod, have yet to install it on the car. I had them welded from the outside, and was thinking about using jb weld to fill the rest of the hole on the inside...now I won't

people cautioned me against using it just for that reason, but I never found anyone who it actually happened to...now I know

 

Yeah. I sure learned my lesson. Oh well, a nice 89 GTU w/ new paint and engine will make me feel better...Now how do I get to Georgia from Tx w/o a car......

 

Doing the mod didnt kill the engine, using a weak compound did. I wouldve just taken an arc welder or something and spot welded the holes shut.

 

Yea that sux man Its a shame she had to die like that. However she will soon be reincarnated with a boinger.

 

I can't wait to see that 5.0 in her....(did I just say that?) I read somewhere that someone used JB Weld to do it. Man, I feel like such a dunce....

 

this isnt the first thread ive read where an engine went due to jb weld, someone last year used jbweld to try to mimic pinapleracing's more efficient 5&6th ports. It came loose the next day and ate his engine

-Jacob

 

The lesson...DO NOT USE JB WELD ON INTERNAL PARTS!!! EVER!!! DO NOT BE LIKE ME!!!

 

JB weld, wd40, duct tape and bailing wire, the greatest inventions ever. Just not for the inside of your motor.

 

damn that sucks

 

Once again, using a consumer grade product (ie JB WELD) instead of an Industrial Grade product (IE The correct formulation of DEVCON for your application; leads to the destruction of a car, even though the mod was well conceived; just poorly executed.

GUYS:
1.Read the product information and follow the direciond to a TEE!. They were written for a reason.
2. Use the correct product for the JOB, don't try and cheap out or avoid waiting a few days for the correct product.
3. DO IT RIGHT:->DO IT ONCE

John

 

I just bought a TB on ebay to replace mine that I modded. My car sucks to warm up in the winter so Ill trade that for a little less throttle response. I dont think the TB mod is worth it if you ask me. BTW I didnt use JB Weld on the TB or on the 5th/6th port sleeves.

 

scary ****. i used jb weld on mine. i think ill pull the tb and tap the holes and plug em.

 

Rico, not to be a dick or anything... but...

Did you texture the front-most hole? It's pretty smooth, and asking to slip into the intake.

I JUST did the TB mod last night on my spare intake; but I made sure to cut some grooves into the brass sleeves, to give the JB Weld something to 'hold' onto.

 

I had a welder use an aluminum plug, then welded that in place. Total cost: $30 plus tax. I went so far as to buy a tube of jb weld, but never used it. *thank god*

 

Guys dont use JB weld. Use a NPT plug Teds site has the sizes Just buy a tap and the plugs and dont tap the hole all the way through, use a bit of locktite and you will be fine.

 

Here the URL to Ted's right up

http://fc3s-pro.com/TECH/HOWTO/TBM/tbm.html

 

I just got a plug and taped the holes and put a plug in them with some lock-tight on the threads...

 

teds site is a taaaaaaaaaaaaaaaad bit flawed. . . well, maybe not for a new or great condition TB. anyways, the rear hole is usually a bit larger than the front hole. i guess it just gets worn out. id go a little bigger on the tapping. so you get a good seal.

paul

 

Ok, so what is a "Jb Weld" flake? I would be a lot more convinced of the findings if your post also said something about jb weld missing from the throttle body. Was there any matter missing from where you put the JB weld?

James

 

I say no way!

JB Weld will hold that hole tight as hell.

I have a JB Welded TB in my closet. Bring your icepick over and we can see how easy it flakes.

 

Actually there is an update to this. Due to some trading me and this guy did, I wound up getting this infamous JB WELD engine in trade as a core. Upon disassembly I could find no internal damage of any kind, other than a bit of carbon removal (you could see where something went through there, but wasnt strong enough to hurt the rotor or housing, which were still perfect).

Therefore, I would say that some small flakes of JB weld wouldnt kill your engine either, though Im not saying it is out of the range of possiblility, rather that given this experiment, it is out of the range of likelihood.

 

So what *was* wrong with the engine then? Stuck seals or something?

 

its been said before to not use JB weld on your intake, you shouldve known better rico you brick

 

Actually when before I took it apart I never even checked it's compression or anything, I figured it'd be grenaded from his description.

I took it apart and all seals were present and accounted for, no cracks or breaks of any kind. Just some disturbance of the carbon on the surface of the rotors, and not much at that (it didnt get back down to bare metal). IT sorta looked like what you'd expect if you ran part of a rag through an assembled engine, then took it apart and looked at the carbon on the rotors..part of it was "rubbed" off.

The seals on that rotor did seem a bit stuck, perhaps the jb weld disentigrated but not before it jammed the seals up inside the rotors a bit too much, and caused it to run poorly for a few seconds, then he shut it off and assumed it was FUBAR. Who knows? All I know is I could have put it right back together and had a great motor...