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Old 03-30-2014 | 12:16 PM
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Originally Posted by Randy Nielsen
Good deal that you got everything worked out & your happy with the results, should make for some trouble free fun boating. How about some video when you get on the water? Randy
Unlike that other pic on the first page. How's the old saying go? If it has tits or wheels it's bound to give your problems. Haha I had to add some comedy to it. Looks like a solid build! Good job going with the quick fuels! They are the best I've seen out of the box! And this thread is full of great info!

Last edited by KRAUSMOTORSPORTS; 03-30-2014 at 12:36 PM.
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Old 04-02-2014 | 04:25 PM
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Originally Posted by KRAUSMOTORSPORTS
Unlike that other pic on the first page. How's the old saying go? If it has tits or wheels it's bound to give your problems. Haha I had to add some comedy to it. Looks like a solid build! Good job going with the quick fuels! They are the best I've seen out of the box! And this thread is full of great info!
I think the saying is, "If it has tits or tires, it's going to be TROUBLE!"
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Old 04-03-2014 | 10:19 AM
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Originally Posted by Borgie
Did you guys use leak lock on the head studs? Seems quite a few guys run into leaky studs using the specialty thread sealers out there, and if I recall Mike likes and has used leak lock with great success?
I thought 540 blocks had blind head bolt holes anyway. I pressure tested mine last night and I have three sending some bubbles up through the threads, at least they are all outside the valve cover. I used the Hylomar sealant on the threads. Going to pull the offending studs and try some more sealant to see if that fixes it. Bob thinks if the engine goes through a few heat cycles the leaks will stop on their own, but I would rather be safe than sorry. If that doesn't fix them, might have to pull heads and studs and use something else. Either that or sell the whole ball of wax and drop in a 330.
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Old 04-03-2014 | 11:51 AM
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Hey Budman, it sounds like that motor is gonna fight you to the end. You'll get it just stick with it. Not to start a what's the best product to use... But I've always used liquid Teflon and not just on one or two motors but I've never had an issue with it. Good luck keep your head up.
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Old 04-03-2014 | 02:06 PM
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Budman, how well did you clean the shipping oil off the threads ? Takes along time to do with all the studs / bolts but it's a must do. Most sealers turn into a dripping goo when mixed with that oil.
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Old 04-03-2014 | 04:46 PM
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Originally Posted by SB
Budman, how well did you clean the shipping oil off the threads ? Takes along time to do with all the studs / bolts but it's a must do. Most sealers turn into a dripping goo when mixed with that oil.
SB, I cleaned them very thoroughly with brake cleaner and a wire wheel. They were spic and span, as were the threads in the block. Also, this was an automotive core, so the threads in the block were not corroded at all. I was really anal about doing this the right way to avoid leaks. Guess I just picked the wrong product.

Plan is to try pulling the leaking studs and apply more hylomar to them to see if that fixes it. Of course, I still have to test the other bank. If it's leaking like a sieve too I might just give up and pull the heads and studs, clean everything again, and try something else. It just seems like everyone has a preferred thread sealer that they claim works every time. Hard to figure out which one is fool proof.

Wondering if I ran it on the startup stand with some of the GM sealer circulating in it if it would take care of this. Trouble is, if it doesn't fix it, then I have that much more stuff to pull off the engine. Bob seems to think I am overthinking it - he thinks it will seal itself up when it gets hot. He may be right, but if not, I'm going to be pretty far into it.

I seem to have a knack for rooting out all of the exotic clusterfuqs with this motor. Can't wait to see what's next.

ICD, sorry to hijack your thread! Don't want any of my bad mojo rubbing off on your motors!
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Old 04-03-2014 | 06:49 PM
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I think you did, while priming the 2nd motor I had like 3 oil leaks and a bad check valve.
Guess I should tighten fittings before I get distracted


I like the Hylomar but for gaskets. If it leaks try something different for threads.

Any good HVAC supply house should carry it..










Leak Lock high strength pipe joint sealant
Leak Lock is a state-of-the-art high strength, pipe joint sealant consisting of chemically resistant film formers, plasticers, reinforcing fillers and solvents .

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Available in 1 1/3 oz. tube; 4 oz. & 16 oz. brush top plastic jars; 1 gal. can

Product Specifications
What is Leak Lock?
Leak Lock is a state-of-the-art high strength, pipe joint sealant consisting of chemically resistant film formers, plasticers, reinforcing fillers and solvents .

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When Leak Lock is applied to pipe joints, it adheres to the mating surfaces. After joints are assembled, Leak Lock sets to form a chemically resistant flexible fluid-tight seal.

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Leak Lock should be applied to clean joint surfaces, either with the applicator brush or any convenient spatula. Apply Leak Lock to both mating surfaces. Tack should be allowed to develop before joints are assembled.

Where to Use It
Leak Lock can be used on all metal or plastic materials, including but not limited to, aluminum, aluminum alloys, cast irons, copper, copper alloys, (brass, bronze, etc ...), magnesium and magnesium alloys, carbon steels, stainless steels, galvanized surfaces, PVC, CPVC, ABS, fiberglass, black polypropylene, and kynar. Leak Lock should be applied to threaded joints, flanged joints, gasket surfaces and all mating surfaces where a fluid-tight seal is required. Special Applications - Leak Lock is ideal for joining dissimilar metals and materials. Prevents loosening of nuts, bolts, plugs and fittings. Call Highside for specific applications and compatibility.
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Old 04-03-2014 | 06:58 PM
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Budman, what do you really have for a block ? You said you have a 540, then said a passenger block ? Excuse me for forgettting what you have put togther for a motor.

The 502 (from GM) and some of the other race and of course aftermarket has some blind holes.

Studs don't tighten into the threads like bolts, so that's why bolts seal up easier. The bolts and block threads are basically squishing/jamming/pulling (whatever the term is) together.

Does no one use the trusted Permatex #2 around here anymore. LOL.

Oh and I believe Loctite makes a stud sealing compound if you are real worried.

Last edited by SB; 04-03-2014 at 07:03 PM.
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Old 04-03-2014 | 07:26 PM
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when you are useing head studs you put the sealer[;i like keak lock] on the threads and torque the nuts before the sealer dries or it will not seal properly.
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Old 04-03-2014 | 08:25 PM
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Originally Posted by mike tkach
when you are useing head studs you put the sealer[;i like keak lock] on the threads and torque the nuts before the sealer dries or it will not seal properly.
Yep, I did it that way.
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