Printable Version of Topic
Click here to view this topic in its original format
914World.com _ 914World Garage _ Any experience with Marvel Mystery Oil?
Posted by: Ampex351 Sep 24 2021, 01:14 PM
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!
Posted by: mihai914 Sep 24 2021, 02:24 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.
Posted by: windforfun Sep 24 2021, 02:32 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.
Posted by: Ampex351 Sep 24 2021, 02:41 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
Posted by: Ampex351 Sep 24 2021, 02:41 PM
20W-50
Thank you...that's what Im running.
Posted by: Ampex351 Sep 24 2021, 02:42 PM
20W-50
Thanks, I am running 20-50 Brad Penn now.
Posted by: brant Sep 24 2021, 02:42 PM
marvel is not going to stop the problem.
just live with it, it you don't want to do a top end.
Posted by: Ampex351 Sep 24 2021, 02:44 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?
Posted by: Ampex351 Sep 24 2021, 02:45 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?
Posted by: windforfun Sep 24 2021, 02:46 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.
Posted by: windforfun Sep 24 2021, 02:47 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!!!
Posted by: Ampex351 Sep 24 2021, 02:47 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
Posted by: windforfun Sep 24 2021, 02:49 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!!!
Posted by: brant Sep 24 2021, 02:57 PM
a little smoke isn't going to leave you on the side of the road..
you should be fine to drive it.
Posted by: windforfun Sep 24 2021, 06:23 PM
This is for Ampex351. This is the control room for my recording studio.
Attached thumbnail(s)
Posted by: gord Sep 24 2021, 10:48 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
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!
Posted by: windforfun Sep 25 2021, 04:57 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
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!
It's just for fun.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)