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> Any experience with Marvel Mystery Oil?, 2.0 is smoking
Ampex351
post Sep 24 2021, 01:14 PM
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Compression tests were good, leak down was good but the car still smokes during deceleration. Just normal driving. The engine runs very well and I am not ready to rebuild a motor. So....does anyone have any experience using Marvel Mystery Oil or another additive to slow down the smoking?

Thanks!
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mihai914
post Sep 24 2021, 02:24 PM
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Marvel Mystery oil and most leak-stop additives are just mineral spirits that will make the seals swell.

Your issue is most likely due to worn valve guides which are bronze and will be unaffected by the product.

If you can run a thicker weight of oil, that might help a little.
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windforfun
post Sep 24 2021, 02:32 PM
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20W-50 & go Ampex. I used to work for them in the early "80s. I have an AG-440 & an ATR-800. Both are 1/2" 4 track machines in excellent condition. They have so much dynamic range that Dolby NR isn't necessary.
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Ampex351
post Sep 24 2021, 02:41 PM
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QUOTE(mihai914 @ Sep 24 2021, 03:24 PM) *

Marvel Mystery oil and most leak-stop additives are just mineral spirits that will make the seals swell.

Your issue is most likely due to worn valve guides which are bronze and will be unaffected by the product.

If you can run a thicker weight of oil, that might help a little.


Thank you for the input.

Roger
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Ampex351
post Sep 24 2021, 02:41 PM
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QUOTE(windforfun @ Sep 24 2021, 03:32 PM) *

20W-50


Thank you...that's what Im running.
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Ampex351
post Sep 24 2021, 02:42 PM
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QUOTE(windforfun @ Sep 24 2021, 03:32 PM) *

20W-50


Thanks, I am running 20-50 Brad Penn now.
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brant
post Sep 24 2021, 02:42 PM
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marvel is not going to stop the problem.
just live with it, it you don't want to do a top end.
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Ampex351
post Sep 24 2021, 02:44 PM
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QUOTE(mihai914 @ Sep 24 2021, 03:24 PM) *

Marvel Mystery oil and most leak-stop additives are just mineral spirits that will make the seals swell.

Your issue is most likely due to worn valve guides which are bronze and will be unaffected by the product.

If you can run a thicker weight of oil, that might help a little.


Thanks, I'm running Brad Penn 20-50 now. Will the car be prone to major breakdown if I DONT' do a valve job right away?
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Ampex351
post Sep 24 2021, 02:45 PM
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QUOTE(brant @ Sep 24 2021, 03:42 PM) *

marvel is not going to stop the problem.
just live with it, it you don't want to do a top end.


Do you think I'd be in danger of a breakdown NOW if I don't do a valve job right away?
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windforfun
post Sep 24 2021, 02:46 PM
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QUOTE(Ampex351 @ Sep 24 2021, 01:45 PM) *

QUOTE(brant @ Sep 24 2021, 03:42 PM) *

marvel is not going to stop the problem.
just live with it, it you don't want to do a top end.


Do you think I'd be in danger of a breakdown NOW if I don't do a valve job right away?


IMHO, no.
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windforfun
post Sep 24 2021, 02:47 PM
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QUOTE(windforfun @ Sep 24 2021, 01:32 PM) *

20W-50 & go Ampex. I used to work for them in the early "80s. I have an AG-440 & an ATR-800. Both are 1/2" 4 track machines in excellent condition. They have so much dynamic range that Dolby NR isn't necessary.


Go Ampex!!!
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Ampex351
post Sep 24 2021, 02:47 PM
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QUOTE(windforfun @ Sep 24 2021, 03:32 PM) *

20W-50 & go Ampex. I used to work for them in the early "80s. I have an AG-440 & an ATR-800. Both are 1/2" 4 track machines in excellent condition. They have so much dynamic range that Dolby NR isn't necessary.


I have 2- 351 2 track machines and a AG440. Love them all. We make a new recording tape called Capture. It sounds fantastic on my old ampexes.

www.splicit.com

Roger
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windforfun
post Sep 24 2021, 02:49 PM
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QUOTE(Ampex351 @ Sep 24 2021, 01:47 PM) *

QUOTE(windforfun @ Sep 24 2021, 03:32 PM) *

20W-50 & go Ampex. I used to work for them in the early "80s. I have an AG-440 & an ATR-800. Both are 1/2" 4 track machines in excellent condition. They have so much dynamic range that Dolby NR isn't necessary.


I have 2- 351 2 track machines and a AG440. Love them all. We make a new recording tape called Capture. It sounds fantastic on my old ampexes.

www.splicit.com

Roger


Keep them heads clean & demagnetized. Right on Roger!!!

(IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif)
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brant
post Sep 24 2021, 02:57 PM
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a little smoke isn't going to leave you on the side of the road..
you should be fine to drive it.
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windforfun
post Sep 24 2021, 06:23 PM
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This is for Ampex351. This is the control room for my recording studio.


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gord
post Sep 24 2021, 10:48 PM
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QUOTE(windforfun @ Sep 24 2021, 06:23 PM) *

This is for Ampex351. This is the control room for my recording studio.


And I thought the 914 might be a safe way of avoiding the music industry….lol (IMG:style_emoticons/default/lol-2.gif)

Pretty sure I’ve still got a Tascam 8-track and rack of Ashly compressors in storage if anyone wants to trade for actual car parts! (IMG:style_emoticons/default/aktion035.gif)
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windforfun
post Sep 25 2021, 04:57 PM
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QUOTE(gord @ Sep 24 2021, 09:48 PM) *

QUOTE(windforfun @ Sep 24 2021, 06:23 PM) *

This is for Ampex351. This is the control room for my recording studio.


And I thought the 914 might be a safe way of avoiding the music industry….lol (IMG:style_emoticons/default/lol-2.gif)

Pretty sure I’ve still got a Tascam 8-track and rack of Ashly compressors in storage if anyone wants to trade for actual car parts! (IMG:style_emoticons/default/aktion035.gif)


It's just for fun.

(IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/beer3.gif)
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