leaks

need help with intake leaks

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JUGPAM11
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leaks

#1

Post by JUGPAM11 » Tue May 07, 2019 5:22 pm

put in peek seals and still have some leaks. nipples are good. thinking of using some Hylomar Blue to help. any one have any luck with using it?



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Re: leaks

#2

Post by topper2 » Tue May 07, 2019 6:58 pm

You don't want to be using any sealant as it may be ok when you first assemble but will quickly start to leak. You need to identify which area the leak is coming from when you pressurize it and bubble test it. Could be a u/s manifold if all else is ok. Did you leave the base nuts slighlty undone when tightening up the manifold nuts?
Cheers Leigh

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Re: leaks

#3

Post by Buddhahoodvatoloco » Tue May 07, 2019 10:26 pm

Just got done fixing that on my "U", patience is the key word,,,
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JUGPAM11
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Re: leaks

#4

Post by JUGPAM11 » Thu May 09, 2019 6:18 pm

base nuts left loose and patience running thin now.

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Re: leaks

#5

Post by Buddhahoodvatoloco » Thu May 09, 2019 7:32 pm

JUGPAM11 wrote:
Thu May 09, 2019 6:18 pm
base nuts left loose and patience running thin now.
" Okay, find a level that gives you a vertical bubble.
Remove manifold.
Work your Peek seals gently off.
Now dry fit the manifold to the cylinders, where the flanges meet the cylinders flush.
Mark the level, or get a good visual read.
Work the peek seals on again gingerly.
Begin the Flange nuts, 1/4-? turns, alternating the nuts.
Get it good and snug.
Now place the level on the face of the manifold, and move the manifold until it mirrors the level/bubble read you got earlier.
Get the drift, 1/4 turn even less once you start getting snugged up.

But I digress, visually review the nipples on the cylinders, can you see any divots etc, if so; address them. Same scrutiny to manifold that mates to the cylinders.

Reread some of your post, where the peek seals machine for the manifold.

Patience. Again, PATIENCE.

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Re: leaks

#6

Post by JUGPAM11 » Fri May 10, 2019 3:43 am

will try after gym in a.m. if it don't work maybe the blue stuff is worth a try. it is used by a lot of big aircraft and auto companies, or so say the info they put out there.

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Re: leaks

#7

Post by flat38 » Fri May 10, 2019 3:50 am

Was your manifold also trued up and fitted to the PEEK seals? Most manifolds are grooved and out of round due to using brass seals. PEEK seals properly fitted to a true manifold and well sealed cylinder nipples will not need additional goop to seal.

JUGPAM11
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Re: leaks

#8

Post by JUGPAM11 » Fri May 10, 2019 7:09 pm

manifold and nuts are about .002 out of round. I told Bruce at Mold Threads about that and he said ok it will work. when I asked about a sealer I think I hurt his feelings.he said you won't need it. going to the shop now to start over to see what happens. I need a lot of luck I think.

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Re: leaks

#9

Post by JUGPAM11 » Sat May 11, 2019 3:42 pm

still no luck getting the leaks stopped. will be looking for a new manifold and nuts. anyone got them for sale or where to get them? this one is part of the Mikuni kit. looks like I made big mistake!!

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Re: leaks

#10

Post by flat38 » Sat May 18, 2019 2:02 am

No need to buy a new manifold. I can true up your old one and make fitted PEEK seals that won't leak.
PM me if you are interested and I can give you price info.

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Re: leaks

#11

Post by JUGPAM11 » Sat May 18, 2019 1:58 pm

no more leaks. Motoseal from Permatex did the job.

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Re: leaks

#12

Post by Buddhahoodvatoloco » Sat May 18, 2019 2:37 pm

As I wrote ya earlier:: Patience. Again, PATIENCE.is all it took really. they be just tractors en mi barrio,,,,,,
JUGPAM11 wrote:
Sat May 18, 2019 1:58 pm
no more leaks. Motoseal from Permatex did the job.

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