IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: Hill1430 on June 17 2023, 11:02:02 PM

Title: Help with turbo mounting and vacuum lines
Post by: Hill1430 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 doesn’t 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?

Title: Re: Help with turbo mounting and vacuum lines
Post by: 1KWIKSIX 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 it’s 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

Title: Re: Help with turbo mounting and vacuum lines
Post by: Hill1430 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?

Title: Re: Help with turbo mounting and vacuum lines
Post by: 1KWIKSIX on June 18 2023, 03:24:53 PM

Silicone vacuum hose is what I use

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

Title: Re: Help with turbo mounting and vacuum lines
Post by: Steve Wood on June 18 2023, 05:00:14 PM

Yes, clock it and use silicone hose

Title: Re: Help with turbo mounting and vacuum lines
Post by: Hill1430 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!

Title: Re: Help with turbo mounting and vacuum lines
Post by: Steve Wood on June 18 2023, 10:58:32 PM

Good!

Title: Re: Help with turbo mounting and vacuum lines
Post by: Just a Six? on June 23 2023, 07:08:37 PM

Quote from: 1KWIKSIX on June 18 2023, 03:24:53 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.

Title: Re: Help with turbo mounting and vacuum lines
Post by: 1KWIKSIX on June 24 2023, 07:00:46 AM

Here’s a link that lists all the different sizes of vacuum hoses needed for our cars.
You’ll have to scroll down quite a ways to find the list but it’s quite extensive

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

Title: Re: Help with turbo mounting and vacuum lines
Post by: Just a Six? 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?

Title: Re: Help with turbo mounting and vacuum lines
Post by: 1KWIKSIX on June 25 2023, 07:14:18 AM

I doubt that it’s really critical ……as long as it’s a snug fit , I’d think you’ll be golden 👍

Title: Re: Help with turbo mounting and vacuum lines
Post by: Forzfed on June 27 2023, 02:26:45 PM

Quote from: Hill1430 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?

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