Ok, replaced snout with sealant, put it back together and still leaking, what do I use to clean off the sealant and reapply? Im thinking I either didmt tighten it correctly or I puttoo much sealso it didnt close all the way? Also I failed to mention that when I pulled the snout off, partof the upper intake gasket came off with it...isnt that the part that some of you cut off?
When you say thin, how thin is a thin layer
th3fr4nchi5e Addict
Name : Dave Age : 31 Location : Cheektowaga, NY (Buffalo) Joined : 2010-10-31Post Count : 572 Merit : 30
By thin I mean about the diameter it flows out of the squeeze tube. As long as it you get all the way around without any gaps, it shouldnt leak? When we did mine, the gasket maker was only a few mm. Its weird that you're still getting a leak after removing it and putting new gasket maker in. Did you let the gasket dry good before filling with oil? And does the surface you apply the RTV stuff to look corroded where it would not sit flush?
AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13Post Count : 18452 Merit : 252
I will take it apart again, recommendations for cleaning debris, sealent off? Im willihg to bet I didnt let it dry. Now, let it dry before I put it back together, or put it together and then let it sit?
th3fr4nchi5e Addict
Name : Dave Age : 31 Location : Cheektowaga, NY (Buffalo) Joined : 2010-10-31Post Count : 572 Merit : 30
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sat Sep 28, 2013 12:05 am
I always use a razor blade to clean off all of the debris. And I meant put it together and let it dry, before adding the oil again! Like AA said though, if the surface is clean and nit damaged or worn in any way, it should be flush enough that the gasket is only insurance.
highwaywarrior Fanatic
Name : daryl Age : 41 Location : chesapeake va Joined : 2012-06-09Post Count : 403 Merit : 2
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sat Sep 28, 2013 12:13 am
Alright cool, so remove it, clean off with razor, reseal, let dry first before adding oil, how long did you let it sit?
th3fr4nchi5e Addict
Name : Dave Age : 31 Location : Cheektowaga, NY (Buffalo) Joined : 2010-10-31Post Count : 572 Merit : 30
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sat Sep 28, 2013 2:23 am
Most people say it takes a few hours to cure and around 24hrs to dry. If you wait 2-3 hours that should be fine but if you not dependent on the car to go somewhere right away might as well let it set a bit longer!
highwaywarrior Fanatic
Name : daryl Age : 41 Location : chesapeake va Joined : 2012-06-09Post Count : 403 Merit : 2
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sat Sep 28, 2013 10:26 am
Alright thats what I will do then. Thanks
highwaywarrior Fanatic
Name : daryl Age : 41 Location : chesapeake va Joined : 2012-06-09Post Count : 403 Merit : 2
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Tue Oct 01, 2013 11:21 am
Son of a b.... took the snout off again for the second time, resealed it, its still leaking, what sequence was use dto tighten the bolts down? ! Im about to give up
joshuadalegrimes Addict
Name : josh Age : 43 Location : harrodsburg, ky Joined : 2012-09-02Post Count : 501 Merit : 13
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Tue Oct 01, 2013 11:28 am
i think i have my old snout around here somewhere. needs cleaned and the old drain plug taken out (stripped head) and of course a new one put back ( 8 bucks gm dealer). if ya want it its yours just pay shippin. let me know and ill look for it
matt270avian Expert
Name : Matt Age : 28 Location : Frederick, MD Joined : 2012-01-15Post Count : 2681 Merit : 54
I feel like you either messed the snout up, or you're not using enough sealant. Maybe post some pictures of the bare metal and how much sealant you're using? Is the belt lining up right and not squealing?
highwaywarrior Fanatic
Name : daryl Age : 41 Location : chesapeake va Joined : 2012-06-09Post Count : 403 Merit : 2
Belt is lined up correctly, no squealing . seems to be coming out of the bottom. How did you guys tightened the bolts? Top to bottome, left to right etc. As far as the sealant goes. When I put the bead around the snout, am I supposed to spread it out into a thin layer or no?
AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13Post Count : 18452 Merit : 252
I know this is a little extra work, but by removing the entire supercharger you can have better visibility as to where the leak is coming from. The blower should hold SC oil off the car. It will also permit you to replace the SC gasket with a fresh one.
Belt is lined up correctly, no squealing . seems to be coming out of the bottom. How did you guys tightened the bolts? Top to bottome, left to right etc. As far as the sealant goes. When I put the bead around the snout, am I supposed to spread it out into a thin layer or no?
tightening order doesn't really matter. RTV should be very very thin, but some guys don't even use it. The surfaces are machined and should seal just by tightening. The surfaces aren't gouged are they? Or perhaps its your snout seal thats leaking?
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highwaywarrior Fanatic
Name : daryl Age : 41 Location : chesapeake va Joined : 2012-06-09Post Count : 403 Merit : 2
Hm, i dont mind taking her apart again. I didnt look damaged or anything when i cleaned it off again, the second time. Also when i took it off. The red sealant wasnt even on the machined surface it spread to the outer parts. So here what i will do, take the sc off and see where its leaking. Take the snout off and use a different sealant RTV high temp?
For future ref Abaddon says the SC coupling makes a rod knock sound at idle (only at idle), so that rules one possibility out.
Jack the R Master
Joined : 2007-01-16Post Count : 8070 Merit : 105
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Fri May 25, 2018 2:24 am
I ran the engine with the SC belt off, the choo choo sound is definitely coming from the SC. I checked the SC oil level, that's fine. I can't feel any play in the coupler, but I can hear some little impact sound back at the base of the snout when I switch directions rocking the pulley back and forth. If there is an play it has to be tiny, like a 1/32 or 1/64. Turning the pulley doesn't feel buttery smooth, but there's nothing that jumps out and says "this is a bad bearing." I guess it could be, but from what I've been reading so far the bearing is not likely to fail. I'll keep an eye on this and see what happens, unless someone spots a/the problem.
Abaddon Expert
Name : Scott Location : Macomb, Michigan Joined : 2010-02-24Post Count : 4315 Merit : 185
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Fri May 25, 2018 7:35 am
That doesn't sound right to me. When you spin it, it should be relatively noise free. Yours is making a "zipper" type sound. Unless it's the video making some weird feedback.
Correct on the coupler noise. The coupler has 6 holes, with 3 on each side. They're offset of each other. The snout gear has 3 pins, and the rotor gear has 3 pins. The coupler is what mates the whole unit together. Over time, the (not metal) coupler wears out, and the holes oblong. The 3800 naturally misfires at idle. Those misfires, cause a momentary "stoppage" of the S/C, which causes the pins to slam against the coupler. The sound gets worse as the engine warms up. If you ever hear a knock from the upper engine area, put a stethoscope (or screwdriver) on the S/C and to your ear......
albertj Master
Name : Location : Finger Lakes of New York State Joined : 2007-05-31Post Count : 8685 Merit : 181
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Fri May 25, 2018 9:05 am
Abaddon wrote:
That doesn't sound right to me. When you spin it, it should be relatively noise free. Yours is making a "zipper" type sound. Unless it's the video making some weird feedback.
Correct on the coupler noise. The coupler has 6 holes, with 3 on each side. They're offset of each other. The snout gear has 3 pins, and the rotor gear has 3 pins. The coupler is what mates the whole unit together. Over time, the (not metal) coupler wears out, and the holes oblong. The 3800 naturally misfires at idle. Those misfires, cause a momentary "stoppage" of the S/C, which causes the pins to slam against the coupler. The sound gets worse as the engine warms up. If you ever hear a knock from the upper engine area, put a stethoscope (or screwdriver) on the S/C and to your ear......
The coupler noise is one of a few, only a few sounds from an SC 3800 that makes one think sudden death is imminent.
One of the others is the alternator bearing. Ever heard one of those failing? Sheesh, I thought I'd spun a bearing.
Jack the R Master
Joined : 2007-01-16Post Count : 8070 Merit : 105
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sat May 26, 2018 12:19 am
Abaddon wrote:
That doesn't sound right to me. When you spin it, it should be relatively noise free. Yours is making a "zipper" type sound. Unless it's the video making some weird feedback.
The "zipper" sound is accurate, not an artifact. It sounds like it's coming from the pulley area, so maybe a bad bearing after all, unlikely though it may be?
Jack the R Master
Joined : 2007-01-16Post Count : 8070 Merit : 105
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sun May 27, 2018 2:37 am
Looking at ZZP vs Intense snouts, the Intense rebuild is radically cheaper?
ZZP
Intense
I don't understand why there's such a price difference, but the Intense rebuild isn't so bad, if that's what I need.
Jack the R Master
Joined : 2007-01-16Post Count : 8070 Merit : 105
Subject: Re: Write-Up: Supercharger Coupler Replacement (Series II) Sun Jun 10, 2018 1:51 pm
SC snout is off, sounds like the bearing is bad?
Here's a couple pics of the bolt holes -
With the front bottom bolt out (easily missed), I was able to pry the snout off using a crowbar against the accessory tensioner to break the snout loose. The snout was glued on pretty good, but nothing the crowbar couldn't handle.
I looked at the coupler and I bet it's already been changed, I can find no play in it at all. Unless it can't take extra boost, I see no reason to change it.