What Sizes of Vacumn Hose Do Turbo Buicks Use?

[Yankee John]

What are the sizes of the vacumn hoses used under the hoods of GN's and Turbo T's? My car is in the paintshop, otherwise I'd just look for myself

I'm going to replace all the vac hose under the hood on my newly-aquired Grand National as a precaution- After all, they are only 22 years old.

I figure 10 feet of each size should be enough for my car?

Thanks in advance!
John

 

[DailyDrifter]

3.5mm and 4mm will do most of the job. not sure of the size for pcv. Get the line from stylinmotors.com

 

[Antagon]

From user "darkfa8" in another thread.

Cruise Control Servo
Large port 9/32"
Small port 7/32"
Vacuum ball 7/32"

Washer Resevoir 8/32"
Washer Nozzles 7/32"

Charcoal Canister
To Tank 10/32"
Solenoid 8/32"

EGR to Solenoid 5/32"
Vacuum to EGR Solenoid/Check Valve for HVAC/Cruise 9/32"

Brake Booster 3/8" (9-9.5mm)

AFR 6.5/32"

Vacuum Block
3 ports 8/32"
1 port 6/32"
1 port 12/32"

PCV 12/32"

Wastegate Y-hose 8/32"

Total Lengths For Car
4mm = 122"
6mm = 147"
8mm = 46.5"

 

[Yankee John]

Wow- Thank you very much!

John

 

[mybuick]

like to find the braded hose that german cars use for vacuum lines i think it looks better than rubber. i dont find it in the 3 sizes listed above. does anybody know where to get it from?

 

[gs462]

Handy!

 

[charlief1]

3.5mm and 4mm will do most of the job. not sure of the size for pcv. Get the line from stylinmotors.com

He's not asking about your private hoses Dave.:biggrin:

 

[DailyDrifter]

He's not asking about your private hoses Dave.:biggrin:

Well if he was it would be well under 1mm

 

[asd60303]

Handy!

. I was about to make my own thread too.

 

[dynoman]

Someone posted these a little while ago Silicone Hose, Silicone Vacuum Hose, Vacuum Lines, Turbo Hose, Turbo Hoses "hose candy" ,I might use it for my winter project. Sam