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What size ? - MFI cold start enrichment fuel lines
Posted: Thu Jun 04, 2020 5:12 pm
by hot66
anyone know what size the MFI cold start enrichment fuel lines are that are located on the plastics stacks ( the lines connect the small plastic T fittings) ?. Think there are 1972 onwards
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Thu Jun 04, 2020 5:44 pm
by 210bhp
Internal diameter seems to be exactly a quarter of an inch.
I have one on my lawn mower Petrol feed as it seemed to be a perfect diameter so now I have a Porsche lawn mower.
Regards
Mike
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Thu Jun 04, 2020 10:11 pm
by hot66
Has to be small OD as well. Need to order some ( although knowing me I’ve probo got some tucked away in the bowls of the car somewhere as a spare)
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Thu Jun 04, 2020 10:55 pm
by Lightweight_911
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Notes from the last time I bought some of the small diameter cold start hose (for my '73 911E/S) indicate that it was 4.5mm ID/9.5mm OD & I used ~ 500mm.
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Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 7:54 am
by hot66
Thanks Andy
Separate note... any one supply the plastic injector pieces that clip into the stacks ?
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 8:59 am
by Lightweight_911
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I don't think the original plastic ones have been available for years - the only version I've seen recently have been the brass ones.
Unfortunately they're ~ £300 a set ...
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Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 9:22 am
by markm
hot66 wrote:Thanks Andy
Separate note... any one supply the plastic injector pieces that clip into the stacks ?
James, I just bought mine from local OPC Porsche £3.48ea. Part No.999.137.005.40
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 9:32 am
by Lightweight_911
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That's great news !
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Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 9:36 am
by markm
"Bought" my replacement fuel lines from here, albeit it was the larger one but I am pretty sure they have the small dia. one also
https://www.machine7.com/section.php?xSec=322
Even got a sale on for you.
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 9:39 am
by hot66
markm wrote:hot66 wrote:Thanks Andy
Separate note... any one supply the plastic injector pieces that clip into the stacks ?
James, I just bought mine from local OPC Porsche £3.48ea. Part No.999.137.005.40
Mark, do they have the almost blocked off outlet with the pin hole 'squirter' in it ?
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 10:17 am
by markm
James
Which Part No?
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 10:23 am
by hot66
theyre not identified on PET .. they go between items 26 and slip into the plastic intake stacks ( 26 = fuel pipe , 27 = clamps )
consist of 2 'T piece' and 1 90 deg per intake stack. Al have a closed end with pin prick sized hole to inject fuel through
mine are ok, just one of them has is out of round
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 10:49 am
by hot66
these are the brass ones being produced Andy is refering to
https://www.rosepassion.com/en/diagrams ... que-583857
Re: What size ? - MFI cold start enrichment fuel lines
Posted: Fri Jun 05, 2020 12:22 pm
by markm
Give OPC a try, I think this is the part no.911.110.075.10S
Design911 have them
https://www.design911.co.uk/fu/pt856_21 ... tion-Rail/