Any generic vacuum advance units?
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Senior Member
Joined: Jan 2017
Posts: 678
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From: Illinois
Any generic vacuum advance units?
the vacuum advance unit on my 88' xjs is bad... are there any cheap alternative units that work and that I could get at my local autozone or something?
Veteran Member
Joined: Jul 2010
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From: Austin tx and Daytona FL.
yes , i use a generic vacuum advance control.
been 23yrs so cant remember exattly ,but i know it was for a GM Chevy 1975/80 350 V8.
i will get a pic of it as soon as i get into storage garage!
it cost around $15. dollars back then. also my V12 is a Pre-HE distributor.
Ron
been 23yrs so cant remember exattly ,but i know it was for a GM Chevy 1975/80 350 V8.
i will get a pic of it as soon as i get into storage garage!
it cost around $15. dollars back then. also my V12 is a Pre-HE distributor.
Ron
Thread Starter
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Senior Member
Joined: Jan 2017
Posts: 678
Likes: 106
From: Illinois
yes , i use a generic vacuum advance control.
been 23yrs so cant remember exattly ,but i know it was for a GM Chevy 1975/80 350 V8.
i will get a pic of it as soon as i get into storage garage!
it cost around $15. dollars back then. also my V12 is a Pre-HE distributor.
Ron
been 23yrs so cant remember exattly ,but i know it was for a GM Chevy 1975/80 350 V8.
i will get a pic of it as soon as i get into storage garage!
it cost around $15. dollars back then. also my V12 is a Pre-HE distributor.
Ron
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Joined: Jan 2013
Posts: 5,251
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From: Calgary, Canada
The HE vacuum capsule spec is 5-15-12 (starts at 5" Hg, all in at 15" Hg, 12 degrees maximum advance). Most engines don't provide that much vacuum advance, so I doubt a generic advance will optimise the timing.
SNG Barratt has them listed for £24.50, which is quite a bit less than $100 US. Part number is JLM519.
SNG Barratt has them listed for £24.50, which is quite a bit less than $100 US. Part number is JLM519.
Thread Starter
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Senior Member
Joined: Jan 2017
Posts: 678
Likes: 106
From: Illinois
The HE vacuum capsule spec is 5-15-12 (starts at 5" Hg, all in at 15" Hg, 12 degrees maximum advance). Most engines don't provide that much vacuum advance, so I doubt a generic advance will optimise the timing.
SNG Barratt has them listed for £24.50, which is quite a bit less than $100 US. Part number is JLM519.
SNG Barratt has them listed for £24.50, which is quite a bit less than $100 US. Part number is JLM519.
Senior Member
Joined: Dec 2016
Posts: 616
Likes: 137
From: Nevada
I just (well, 3 weeks ago) replaced mine when I was overhauling the distributor.
Even though I did not see Jagboi's post when I was researching options, I came to the same conclusion: the best deal was from SNG Barrat UK (not SNG Barrat USA!).
With current Pound/Dollar exchange rate, and even accounting for Royal Mail Postage, the new vacuum advance unit came out to be around $40. I thought it was very reasonable. The new unit is already installed and it holds vacuum!
Even though I did not see Jagboi's post when I was researching options, I came to the same conclusion: the best deal was from SNG Barrat UK (not SNG Barrat USA!).
With current Pound/Dollar exchange rate, and even accounting for Royal Mail Postage, the new vacuum advance unit came out to be around $40. I thought it was very reasonable. The new unit is already installed and it holds vacuum!
Thread Starter
|
Senior Member
Joined: Jan 2017
Posts: 678
Likes: 106
From: Illinois
I just (well, 3 weeks ago) replaced mine when I was overhauling the distributor.
Even though I did not see Jagboi's post when I was researching options, I came to the same conclusion: the best deal was from SNG Barrat UK (not SNG Barrat USA!).
With current Pound/Dollar exchange rate, and even accounting for Royal Mail Postage, the new vacuum advance unit came out to be around $40. I thought it was very reasonable. The new unit is already installed and it holds vacuum!
Even though I did not see Jagboi's post when I was researching options, I came to the same conclusion: the best deal was from SNG Barrat UK (not SNG Barrat USA!).
With current Pound/Dollar exchange rate, and even accounting for Royal Mail Postage, the new vacuum advance unit came out to be around $40. I thought it was very reasonable. The new unit is already installed and it holds vacuum!