Author |
Message |
pgtips Samba Member
Joined: July 23, 2009 Posts: 860 Location: essex
|
Posted: Tue Jan 11, 2011 11:04 am Post subject: retro fit a decel valve |
|
|
Hi,
I've got a 75 fi auto, didn't come with decel valve as standard. I have a 'spare' fi setup from a later model bus (unknown what year) and I have a decel valve in this box of bits.
While I'm rebuilding I'm just wondering if it would be worth fitting the decel valve into the plumbing.
I am concerned it might have a knock on effect elsewhere, i.e is the FI set up to work better on my bus without it, is there anything else I should consider. Looking at posts on this they seem quite bullet proof/low failure instances so I'm not sweating on adding another thing that can go wrong later.
It appears to be a passive device so I am wondering, VW wouldn't have started to fit them unless they felt it was a good idea. Will it help if I do?
thanks
Kevin |
|
Back to top |
|
|
germansupplyscott Samba Member
Joined: May 22, 2004 Posts: 7094 Location: toronto
|
Posted: Tue Jan 11, 2011 11:22 am Post subject: Re: retro fit a decel valve |
|
|
pgtips wrote: |
Hi,
I've got a 75 fi auto, didn't come with decel valve as standard. |
are you sure? all injected type 4 bus have a decel valve except it was deleted in the automatic vanagon aircooled. _________________ SL |
|
Back to top |
|
|
mattcuddy Samba Member
Joined: October 22, 2003 Posts: 2036 Location: Philly, PA
|
Posted: Tue Jan 11, 2011 11:27 am Post subject: Re: retro fit a decel valve |
|
|
pgtips wrote: |
Hi,I have a 'spare' fi setup from a later model bus (unknown what year) and I have a decel valve in this box of bits.
|
Don;t know what your spares are, but remember that the decel valve for an auto bus is different from a manual bus. |
|
Back to top |
|
|
Westfabulous Samba Member
Joined: January 07, 2007 Posts: 4207 Location: The tropic of Canada, dodging the giant flying moose of Surrey!
|
Posted: Tue Jan 11, 2011 11:47 am Post subject: |
|
|
I too have an automatic (79), and this is a picture of my engine. You should have something like this, as opposed to the round diaphragm that we are all so familiar with. Circled in red; double click to enlarge:
_________________ *****************
"I will gladly pay you Tuesday for a hamburger today." |
|
Back to top |
|
|
germansupplyscott Samba Member
Joined: May 22, 2004 Posts: 7094 Location: toronto
|
Posted: Tue Jan 11, 2011 12:00 pm Post subject: |
|
|
Westfabulous wrote: |
You should have something like this |
'75 auto uses an completely different decel valve that that one, it's electric. _________________ SL |
|
Back to top |
|
|
busdaddy Samba Member
Joined: February 12, 2004 Posts: 51153 Location: Surrey B.C. Canada, but thinking of Ukraine
|
Posted: Tue Jan 11, 2011 12:28 pm Post subject: |
|
|
Ahhhhh.... the Samba gallery, it's amazing!:
_________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
Back to top |
|
|
ChinaRider022474 Samba Member
Joined: September 07, 2008 Posts: 63 Location: SW FL
|
Posted: Tue Jan 11, 2011 1:01 pm Post subject: |
|
|
What's even more amazing are the prices those auto decel valves (on the left in those pics) command these days. They's NLA for looong time. I grabbed one to rathole. If you have a late auto bus, you need to do the same. _________________ Scott
---------------------------------------------
Chugs the Intrepid Traveler - ('78 CE II sunroof transporter/camper mutt)
---------------------------------------------
"..you know my uncle, he starts a friendly game..." |
|
Back to top |
|
|
pgtips Samba Member
Joined: July 23, 2009 Posts: 860 Location: essex
|
Posted: Tue Jan 11, 2011 4:41 pm Post subject: |
|
|
well thats made me double take.
I've got the one on the rhs.
Per BD pic I clearly do have a decel valve but bentley said I didn't (FI section, 10 I think, page 24).
So after reading it didn't I assumed it was the aux air regulator (per bentley also section 10 page 12)
So if that is decel then I do have one. It connects into the air filter S housing.
Something else I have learnt today.
Thank you to all. |
|
Back to top |
|
|
busdaddy Samba Member
Joined: February 12, 2004 Posts: 51153 Location: Surrey B.C. Canada, but thinking of Ukraine
|
Posted: Tue Jan 11, 2011 4:47 pm Post subject: |
|
|
Congratulations, the AAR is the dotty thing that #50 connects to in the diagram BTW _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
Back to top |
|
|
germansupplyscott Samba Member
Joined: May 22, 2004 Posts: 7094 Location: toronto
|
Posted: Tue Jan 11, 2011 5:38 pm Post subject: |
|
|
pgtips wrote: |
Per BD pic I clearly do have a decel valve but bentley said I didn't |
i told you you had one about a week ago in your other thread... _________________ SL |
|
Back to top |
|
|
pgtips Samba Member
Joined: July 23, 2009 Posts: 860 Location: essex
|
Posted: Wed Jan 12, 2011 7:42 am Post subject: |
|
|
germansupplyscott wrote: |
i told you you had one about a week ago in your other thread... |
Yes you did, I hold my hands up,
I relied on Bentley.
Bentley was wrong. Thanks for your patience though, I've learnt quite a lot this week about my bus. |
|
Back to top |
|
|
raygreenwood Samba Member
Joined: November 24, 2008 Posts: 21520 Location: Oklahoma City
|
Posted: Wed Jan 12, 2011 3:16 pm Post subject: |
|
|
In almost all cases, you can use the manual (vacuum decel valve) in place of the electric one. Its just a little trickier to adjust and plumb. Ray |
|
Back to top |
|
|
|