Air intake hose

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MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Air intake hose

Post by MBEpse »

I have recently bought a Pininfarina Spider Europa 1985.5 - There is a small hose that is connected to the engine air intake and just laying in the engine bay not connected to anything, after much searching I have discovered that this is meant to be connected to the vacuum advance on the distributor except there isn’t a vacuum advance module on the distributor?
Any clues if this set-up is correct and advice would be much appreciated.
Thanks Michael
MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Re: Air intake hose

Post by MBEpse »

Also, meant to say that the acceleration is erratic at low speed and struggles when going uphill??
SteinOnkel
Posts: 1000
Joined: Tue Feb 19, 2019 9:31 pm
Your car is a: 1978 124 Spider 1800

Re: Air intake hose

Post by SteinOnkel »

"Any clues if this set-up is correct and advice would be much appreciated. "

Well, it's not correct in the sense that it isn't factory. But that doesn't mean it can't function.

Make sure the hose at the intake is plugged. If it's open, that could explain your symptoms.
MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Re: Air intake hose

Post by MBEpse »

Thanks for the info - maybe, I need to look at a new distributor, the tube is open so will plug it and see it that helps things. Thanks again, Michael
Nut124
Posts: 748
Joined: Wed Oct 25, 2017 6:39 pm
Your car is a: 1978 124 Spider 1800

Re: Air intake hose

Post by Nut124 »

Lack of vacuum advance in ignition hurts low speed torque and drivability.
MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Re: Air intake hose

Post by MBEpse »

Thanks for your help - it’s a nice day tomorrow so out for a drive and going to plug that hose and see if it makes any difference - Again thanks for the knowledge :!:
tima01864
Patron 2021
Patron 2021
Posts: 702
Joined: Thu Jan 12, 2012 8:01 pm
Your car is a: 1983 FIAT Pininafarina Spider 2000
Location: Wilmington, MA

Re: Air intake hose

Post by tima01864 »

Which years did not have vacuum advance?
18Fiatsandcounting
Posts: 3798
Joined: Fri Mar 15, 2019 11:23 pm
Your car is a: 1969 and 1971 124 spiders
Location: San Francisco Bay Area

Re: Air intake hose

Post by 18Fiatsandcounting »

tima01864 wrote:Which years did not have vacuum advance?
1978 and earlier, but I hope someone will jump in and correct me if I've got this wrong. So, only the 2L engine had vacuum advance.

-Bryan
Nut124
Posts: 748
Joined: Wed Oct 25, 2017 6:39 pm
Your car is a: 1978 124 Spider 1800

Re: Air intake hose

Post by Nut124 »

Any engine will benefit from adding vac advance to ignition. It improves off idle torque, low speed performance.

I added it to my 1800 a few years back and it made a huge difference when driving in the neighborhood.

It does require a steady vacuum signal, preferably a common plenum intake. It can be done with IDFs but it takes some engineering to smooth out the vac signal. I have it now with dual IDFs and could share ideas.
MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Re: Air intake hose

Post by MBEpse »

Hi, I have been researching new distributors - has anyone installed or had experience with the ‘123ignition’ distributors?
SteinOnkel
Posts: 1000
Joined: Tue Feb 19, 2019 9:31 pm
Your car is a: 1978 124 Spider 1800

Re: Air intake hose

Post by SteinOnkel »

MBEpse wrote:Hi, I have been researching new distributors - has anyone installed or had experience with the ‘123ignition’ distributors?
They suck.

Just get the '79 dizzy from AR, a $15 GM HEICU and a heatsink. Works great.
MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Re: Air intake hose

Post by MBEpse »

Thanks for the honest reply!
I did speak to a company that sells these distributors and they wouldn’t recommend using on my car so will look at AR, Vic’s and some of the german sites for a ‘standard’ distributor with vacuum advance.
Thanks for the advice.
maxm50
Posts: 107
Joined: Sun Jul 07, 2019 12:12 am
Your car is a: 1981 Fiat Spider
Location: Sebastopol, CA

Re: Air intake hose

Post by maxm50 »

Hey Steiny, what’s this GM “HEICU” and heat sink setup you speak of? Just curious...
1981 Fiat Spider 2000
2011 BMW 335i M-Sport
1971 Honda CB450 Twin
spider2081
Patron 2024
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Posts: 3015
Joined: Fri Jan 27, 2006 11:45 pm
Your car is a: 1981 Spider 2000
Location: Wallingford,CT

Re: Air intake hose

Post by spider2081 »

I have recently bought a Pininfarina Spider Europa 1985.5
I'm not so sure the 85.5 distributor used a vacuum advance. I also don't think any turbo charged engines used a vacuum advance. Hopefully someone with documentation or owns an 85.5 can confirm one way or the other. I think I recall someone mentioning the 85.5 used a unique distributor.
MBEpse
Posts: 26
Joined: Tue Aug 04, 2020 3:52 pm
Your car is a: 1985 Pininfarina

Re: Air intake hose

Post by MBEpse »

Thanks for the information - I will try a bit of research.
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