Author Topic: Help with turbo mounting and vacuum lines  (Read 1154 times)

0 Members and 1 Guest are viewing this topic.

Offline Hill1430

  • Bone Stock
  • **
  • Posts: 63
  • PSI: 0
  • Boost n00b
    • View Profile
Help with turbo mounting and vacuum lines
« on: June 17 2023, 11:02:02 PM »
I am finally getting my car back together. I purchased a new stock replacement turbo from GN1 Performance. After getting it installed the inlet neck doesnít line up with the intercooler very well. Did I mess up somewhere? The intercooler is down as far as possible. Is it a turbo problem? Should I have had my original rebuilt? Or am I making something out of nothing?
Also would it be a problem to replace a hard vacuum line with hose?
1987 Grand National Work in progress
2019 Shelby GT350

Offline 1KWIKSIX

  • Turbo Street Modified
  • *****
  • Posts: 301
  • PSI: 0
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #1 on: June 18 2023, 06:51:42 AM »
Re-clocking the turbo should help however you might also want to consider installing an offset silicon hose.
They even have reducing offset hoses if itís needed for 3 different sized hoses in your case.


 https://hpsperformanceproducts.com/products/hps-silicone-offset-off-center-coupler-air-intake-hose-turbo-black-blue

https://hpsperformanceproducts.com/pages/hps-reinforced-silicone-reducer-coupler-transition-hoses
« Last Edit: June 18 2023, 03:23:43 PM by 1KWIKSIX »

Offline Hill1430

  • Bone Stock
  • **
  • Posts: 63
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #2 on: June 18 2023, 11:43:58 AM »
I did not know you could clock the turbo. Thank you so much! I will consider both options. Anyone have a suggestion on the hard vacuum line?
1987 Grand National Work in progress
2019 Shelby GT350

Offline 1KWIKSIX

  • Turbo Street Modified
  • *****
  • Posts: 301
  • PSI: 0
    • View Profile
« Last Edit: June 18 2023, 03:29:40 PM by 1KWIKSIX »

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 9831
  • PSI: 33
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Help with turbo mounting and vacuum lines
« Reply #4 on: June 18 2023, 05:00:14 PM »
Yes, clock it and use silicone hose
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Hill1430

  • Bone Stock
  • **
  • Posts: 63
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #5 on: June 18 2023, 10:39:01 PM »
I have everything lining up now. Thank you all, I appreciate the knowledge when I need advice!
1987 Grand National Work in progress
2019 Shelby GT350

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 9831
  • PSI: 33
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Help with turbo mounting and vacuum lines
« Reply #6 on: June 18 2023, 10:58:32 PM »
Good!
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Just a Six?

  • OK Now who Farted??
  • Turbo Street Eliminator
  • ******
  • Posts: 1248
  • PSI: 2
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #7 on: June 23 2023, 07:08:37 PM »
Silicone vacuum hose is what I use

https://hpsperformanceproducts.com/products/hps-high-temp-silicone-vacuum-hose-tubing-coolant-overflow-tube-htsvh

Dave what size is the hose 1/4" or something like that? I need to add a couple check valves for HVAC & cruise control & Dorman has a few options.
David
87 LTD. Purchased May 88
Doeskin leather, coach lites without Landau Roof, moon roof, carpeted trunk & No Factory Hood Ornament!
The sticker on AC shows a V-8 Carb car. Special order by Mr. Nick Hall VP of GM Canada
Runs 11.50 on 21 lbs with my old style 67 Q Trim & Alchy

Offline 1KWIKSIX

  • Turbo Street Modified
  • *****
  • Posts: 301
  • PSI: 0
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #8 on: June 24 2023, 07:00:46 AM »
Hereís a link that lists all the different sizes of vacuum hoses needed for our cars.
Youíll have to scroll down quite a ways to find the list but itís quite extensive

https://www.turbobuick.com/threads/scanmaster-g-readings.480870/

Offline Just a Six?

  • OK Now who Farted??
  • Turbo Street Eliminator
  • ******
  • Posts: 1248
  • PSI: 2
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #9 on: June 24 2023, 12:55:31 PM »
Thanks Dave I'll take a look but does it really matter that some are larger than others? 1/4 & 5/16 are pretty close in size?
David
87 LTD. Purchased May 88
Doeskin leather, coach lites without Landau Roof, moon roof, carpeted trunk & No Factory Hood Ornament!
The sticker on AC shows a V-8 Carb car. Special order by Mr. Nick Hall VP of GM Canada
Runs 11.50 on 21 lbs with my old style 67 Q Trim & Alchy

Offline 1KWIKSIX

  • Turbo Street Modified
  • *****
  • Posts: 301
  • PSI: 0
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #10 on: June 25 2023, 07:14:18 AM »
I doubt that itís really critical ÖÖas long as itís a snug fit , Iíd think youíll be golden 👍

Offline Forzfed

  • Turbo Street Eliminator
  • ******
  • Posts: 1334
  • PSI: 5
  • Boost n00b
    • View Profile
Re: Help with turbo mounting and vacuum lines
« Reply #11 on: June 27 2023, 02:26:45 PM »
I did not know you could clock the turbo. Thank you so much! I will consider both options. Anyone have a suggestion on the hard vacuum line?

Yup, just loosen the backing bolts on the Compressor housing and rotate. :cheers:

 

SimplePortal 2.3.7 © 2008-2023, SimplePortal