Question about Loctite?
 

I had a torque converter loosen up. I believe it was torqued properly, and I used blue loctite.
Should I use the red, or is there a better product?

Re: Question about Loctite?
 

I use the red, never had a problem with nuts/bolts loosening with it

Re: Question about Loctite?
 

I want to know also. I've used red loctite on convertor bolts and
then had to use heat to break the seal when I needed to remove
the convertor.

Re: Question about Loctite?
 

Red holds a lot better than blue, but you will have to heat it up to get them off. I would think that a lock nut and the blue stuff would be enough, but if not the red will for sure hold them on there.

Re: Question about Loctite?
 

I use ARP bolts with Loctite Blue and never had a problem...however...in your application with a high RPM 4-Cylinder, you have more harmonics and vibration than a V-8 engine. Larry Morgan, when he ran his 4-Cylinder Fiero with the 151-CID Super Duty Pontiac engine, had the same problem with flywheel bolts loosening.

Re: Question about Loctite?
 

In the 70's I ran an H/G Anglia with a 300 Ford 6 in it. I tried red locktite, safety wire. extra dowels etc. Every 6 runs you had to replace the broken bolts. I never could get them to stay in. Theyd either back out or break the heads off. Wisk I could help, I know thats not what you want to hear. Its just a harmonics problem I was told.

Re: Question about Loctite?
 

You might try using a larger diameter bolt, especially if your existing bolts are 3/8" dia. or less. Drill the flex plate and/or converter tabs for 5/16", make sure the clearance around the bolt is fairly snug. Worked for me once.

Re: Question about Loctite?
 

I used the red or the blue depending on what size bolt and the amount of torque required. Never had to heat the bolts for removal. Very small amounts of red go a long way. I believe that coating a part of a couple threads is all that's required. This is how I fastened my flexplate. Never became loose, never had to heat to remove. And I went 8400 rpm or more, small block. Be conservative with this stuff. Jesse

Re: Question about Loctite?
 

Are you using a bolt that fastens to a threaded boss on the torque converter or are you using a nut and a bolt that goes through the converter and flywheel?

I am a firm believer that if a fastener is engineered correctly for the application you shouldn't need any Locktite at all. There is a lot more to engineering fastener applications than a lot of guys think and pretty much take for granted. A bolt should have the proper stretch for the application among other things like the type of material, torque, etc. Talk to the experts at ARP they will ask you a lot of questions and get you the proper fastener for your particular application.

Re: Question about Loctite?
 

Here is a good question on Locktite, why is it $25-30 a bottle ? Is it made with a gold additive ?

Re: Question about Loctite?
 

Because a bottle taken care of will last you 15-20 years.

What I want to know is how you can get the lid off, if the stuff works?:p

Re: Question about Loctite?
 

Dave,
If a bottle last you 15 to 20 years then you aren't using it as much as I do in my shop. Send your old Loctite to me & I'll cycle it into use.
Art,
I use the red on flywheel bolts on my odd fire V-6 and blue on the Converter bolts. I use an L-9 bolt on the converter with fine thread poly lock nuts. Get ready to tighten things regularly. The harmonics of these non V-8 engines cause nuts & bolts & other parts to fall off. We re check the converter & tranny bolts & drive line every 3 passes. Motor plate & mid plate is another area that gets the same P/M schedule on the bolts. Using wrenches regularly is just the price we pay for running these combinations. Good luck...
Art, another thing to remember is to use a shouldered bolt. A long shoulder that goes into the flywheel & part way into the converter boss. You know the way Std. shift flywheels hold clutch covers on, in alignment. That helps to minimize the shear on the bolt by spreading out the load.

Re: Question about Loctite?
 

They have it as a paste in a tube now so you dont have to worry about knocking the bottle over and losing $25

Re: Question about Loctite?
 

Adger, Is that on odd-fire motors? Our 3800 doesnt have any problems with backing off flywheel bolts or converter bolts. Might be cus we dont make a ton of power, but who knows.

Re: Question about Loctite?
 

...and you do not turn the RPM's either... :)

Re: Question about Loctite?
 

I think Adger's V-6 is just starting a run at the RPM you are ending the run. Yes, Div 6 right on!

Re: Question about Loctite?
 

After a lot of searching I found the loosening problem is pretty common with the motor I'm running, Some guys have doubled the number of converter bolts.
For now I'm just going to use the Red, when my new flexplate and bolts get here. Then I'll keep an eye on them. Hope it will last.