547/3 4 Cam Fan Shroud Fuel Line Junction Help

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Nigel Cousins
356 Fan
Posts: 56
Joined: Thu May 29, 2008 7:14 am

547/3 4 Cam Fan Shroud Fuel Line Junction Help

#1 Post by Nigel Cousins » Sat Aug 10, 2019 9:16 am

Can anybody draw some light for me on what is the correct fuel line junction for a 547/3 4 Cam engine in a 356?

Is it a basic 8mm 'Tee' junction as used on the 547/1 engine or the round junction as on the 692 engine.
Images of both included for reference, any information on when this change is design occurred or supporting images greatly appreciated.
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Brad Ripley
356 Fan
Posts: 3453
Joined: Tue Mar 25, 2008 9:28 pm

Re: 547/3 4 Cam Fan Shroud Fuel Line Junction Help

#2 Post by Brad Ripley » Sun Aug 11, 2019 4:44 pm

Nigel, AFAIK, all the 4-cam fuel pipe assemblies had the junction shown in your second photo. That soldered junction block must have been a special of some sort but it was also used on all the early fuel line on pushrod engines. I don't know of a ready-made source for the joint. However, to make up your own lines, I would suggest purchase of a used pushrod line to get a junction. Here's one on Ebay https://www.ebay.com/itm/Porsche-356-Ea ... xyuR5TYCdF for $85 BTW, that seller always has those for sale. Photo below is the junction.
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Dick Roth
356 Fan
Posts: 192
Joined: Tue Jul 14, 2009 4:01 pm
Location: NYC, Amagansett, NY

Re: 547/3 4 Cam Fan Shroud Fuel Line Junction Help

#3 Post by Dick Roth » Sun Aug 11, 2019 5:34 pm

This guy Brad seems to really know his stuff...

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Nigel Cousins
356 Fan
Posts: 56
Joined: Thu May 29, 2008 7:14 am

Re: 547/3 4 Cam Fan Shroud Fuel Line Junction Help

#4 Post by Nigel Cousins » Tue Aug 13, 2019 5:08 am

Thank you Brad for taking the time, just the information I need to move forward. Best wishes

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