Good Service Experiences for B2K Twin Turbo Corvettes

Discussion of Corvette based Callaway Cars including: (B2K) Callaway Twin Turbo Corvettes (C4); Callaway SuperNatural Corvettes (CL-1/CR-1); Callaway C12; Supercharged Corvettes; Callaway C16; 6th Generation Callaway Corvettes (SC560, SC580, SC606, SC616, SC620, SC652); and 7th Generation Callaway Corvettes (SC627/SC757) - and more!
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Brian B
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by Brian B » Mon Sep 18, 2017 7:23 am

Chris recommended Patriot Chevrolet in Limerick to me last week. I'm in Reading

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SurfnSun
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by SurfnSun » Mon Sep 18, 2017 1:45 pm

Did you buy the car?

Brian B
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by Brian B » Mon Oct 23, 2017 9:05 am

yeah I did!! had the wheels refurbished, 2 1/2" exhaust installed. taking it to Patriot on Nov 13th for new wastegate springs and additional maintenance

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SurfnSun
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by SurfnSun » Mon Oct 23, 2017 1:58 pm

Why do you think it needs new wastegate springs? I highly doubt those are worn out.

My guess is that you over boosting? If that's the case, you have a vacuum/boost line leak. That problem plagued me for a couple of years...turns out it was a stuck EGR valve.

Brian B
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by Brian B » Mon Oct 30, 2017 9:18 am

Was told originally with the true dual exhaust that would need red spring installed. now, per email from Scott Rawlings that i just need to back off the preload screws.

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Dakota Aero
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by Dakota Aero » Mon Oct 30, 2017 9:43 am

How far do they suggest backing off? To a certain boost level?

DA

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SurfnSun
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by SurfnSun » Mon Oct 30, 2017 9:30 pm

Brian B wrote:
Mon Oct 30, 2017 9:18 am
Was told originally with the true dual exhaust that would need red spring installed. now, per email from Scott Rawlings that i just need to back off the preload screws.
If everything is in good order you can safely 56-58"hg with no worries.

If you are overboosting after backing out the wastegate screws, start a new thread and we will help you thru it.

Callaway Chris
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Re: Good Service Experiences for B2K Twin Turbo Corvettes

Post by Callaway Chris » Thu Aug 30, 2018 1:39 pm

Worth mentioning, Corvette Center in Newington, CT which is operated by Ray Zisa, is a fine choice in servicing classic Callaway vehicles.

Corvette Center did installations of many AeroBody packages in the 80s and 90s, and Ray has served as a Bloomington Gold Division Director and Judge for decades. He KNOWS Corvettes and Callaways. Check them out:

http://www.corvettecenter-ct.com

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