Author Topic: Vacuum Dashpot - Total Elimination!  (Read 5496 times)

bpossel

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Vacuum Dashpot - Total Elimination!
« on: April 14, 2008, 17:30:34 »
Recently my IP Pump was rebuilt by Pacific Fuel Injection
Pacific also altered the IP Pump using a Bosch Factory modification issued in the early 70s that allowed for the total elimination of the vacuum dashpot unit.  A cam adjustment, ... Pacific sent me the Bosch update article, which I have scanned in my PC as a pdf file.

If anyone is interested, let me know and I will email it to you.
From what I understand... this adjustment can only be made by a professional with Bosch IP Pump test equipment.

For those of you with the later 113’s that have this vacuum dashpot, you probably know what a real pain it is to get it adjusted right…  I am happy that they were able to eliminate this piece from the fuel/air mixture adjustment ritual…

Bob :)

bpossel  (Memphis, TN.)
'71 280SL  /  '97 E320
« Last Edit: April 15, 2008, 05:47:23 by bpossel »

Peter van Es

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Re: Vacuum Dashpot - Total Elimination!
« Reply #1 on: April 15, 2008, 06:23:26 »
I'll add the contents to the Technical Manual, section on Injection Pumps. .. but it might take a little while.

Peter

1970 280SL. Also known as 'admin@sl113.org' and organiser of the Technical Manual.
1970 280SL. System Admin of the site. Please do not mail or PM me questions on Pagoda's... I'm not likely to know the answer.  Please post on the forum instead!

mrfatboy

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Re: Vacuum Dashpot - Total Elimination!
« Reply #2 on: April 16, 2008, 16:19:23 »
May I ask how much the rebuild was from Pacific?

1969 280sl
Signal Red
4 Speed
1969 280sl (Aug 1968 build)
Signal Red
4 Speed

bpossel

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Re: Vacuum Dashpot - Total Elimination!
« Reply #3 on: April 16, 2008, 17:01:52 »
$1,100.  Price depends on whats needed....  
Bob

quote:
Originally posted by mrfatboy

May I ask how much the rebuild was from Pacific?

1969 280sl
Signal Red
4 Speed



bpossel  (Memphis, TN.)
'71 280SL  /  '97 E320

mrfatboy

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Re: Vacuum Dashpot - Total Elimination!
« Reply #4 on: April 16, 2008, 19:38:29 »
thanks for the info.  Why did you choose Pacific over H&R?

1969 280sl
Signal Red
4 Speed
1969 280sl (Aug 1968 build)
Signal Red
4 Speed

bpossel

  • Guest
Re: Vacuum Dashpot - Total Elimination!
« Reply #5 on: April 16, 2008, 20:54:36 »
oh boy!  Here we go... Can I answer your question?
Yes, if this site is for the people.  No if it is for the vendors.
H&R (nice people), redid my pump 3 years ago.
Also paid them $1,100.
Thanks, Bob

bpossel  (Memphis, TN.)
'71 280SL  /  '97 E320
« Last Edit: April 16, 2008, 21:02:32 by bpossel »