Vacuum hose question

[911fan77]

Started changing out plugs and wires yesterday and noticed that maybe the vacuum hoses might need to be changed. I've searched the site for references but wanted to know if anyone knew the sizes needed to replace the hoses on a 2.7 CIS. I have several books but haven't found any mention on lengths/sizes to replace them.

Thanks,
Dean

[Jim Sims]

Year and model? 1977 911S US?

[Jim Sims]

For 1977 911S US specs; list doesn't include the fuel lines from fuel filter to fuel distributor, from fuel distributor to tank fuel return line nor from fuel distibutor to injectors, WUR or CSV, nor from the WUR back to the main fuel line. Also not listed are the larger diameter metal or molded rubber air lines that attached to the EGR system, Auxiliary Air Regulator, etc.

Units are in millimeters unless noted otherwise.

Throttle body to WUR: C4.5 x 10 x 520 (20-1/2"); maps to Pelican VH-5-10.

Throttle body to top of pneumatic valve (de-acceleration valve): C4 x 10 x 220 (8-11/16") maps to Pelican VH-3.5-7.5.

Throttle body to bottom of pneumatic valve (de-acceleration valve): C9 x 15 x 190 (7-1/2"); maps to Pelican VH-9-14.

Throttle body to side of pneumatic valve (de-acceleration valve): C9 x 15 x 110 (4-3/8"); maps to Pelican VH-9-14.

Throttle body to T-socket (vacuum tee in line between throttle body and distributor): C3.2 x 7 x 30 (11-13/16"); maps to Pelican VH-3.5-7.5.

T-socket (vacuum tee in line between throttle body and distributor) to distributor: 3.2 x 7 x 350 (13-13/16"); maps to Pelican VH-3.5-7.5.

T-socket (vacuum tee in line between throttle body and distributor) to thermovalve and thermovalve to reducing socket (reducing fitting): 4 x 10 x 300 (11-13/16") - 2 pieces this length are needed; maps to Pelican VH-3.5-7.5.

WUR to reducing socket (reducing fitting): 8 x 14 x 40 (1-5/8"); maps to Pelican VH-7-12.

Jim

[911fan77]

Thanks Jim. Yes it is 77 911S 2.7.

Dean