Early Callaway Twin Turbo Maintenance and Performance checkl

Discussion of Corvette based Callaway Cars including: 1987-1991 RPO 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); 7th Generation Callaway Corvettes (SC627/SC757); NEW Callaway C8 Corvettes - and more!
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SurfnSun
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by SurfnSun »

Did you buy it? Be ready to turn a wrench...a B2k can be one of the most rewarding cars you'll ever drive, it just might take a minute to get it there.
Brian B
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by Brian B »

Not yet. Owner passed away and family said i have first shot at it once they are ready to sell. It's giving me time to do my needed research. Did notice some clearcoat lamination at the top edges of the aerobody panels.
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by Callaway Chris »

The question was recently asked, "Are the black parts of the intake a powder coat or painted finish?"
The answer is, they are painted. Here's the process.

Using VHT Wrinkle Plus Paint (P/N SP201) pre-heat the parts in an oven to 125* F.
Paint three (3) fairly heavy coats, with 5 minute between coats of paint.
Raise the oven temperature to 180* F to cure.

Overall, check each time every coat out every 15 minutes, leave in for a max for 30 min. Then let cool overnight.

Remove all rubber and plastic parts prior to this refurbishment process.
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whalepirot
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by whalepirot »

Very helpful as I move into more complicated things beyond the Zaino shine of today. :hi
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by Mobile Man »

I noticed that every post I see is always 88'-90 & 91& up. I'm guessing the 87's are the same as 88's or are they all 88' and title says 87'?

Just wondering if there is any difference and are the 87's still good to purchase.

Also @boostedmaxPSI is from Texas, I'm in dfw if you wouldn't mind sharing how far away you are? Maybe I can stop by sometime.
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by callaway4fun »

1987 cars had IHI turbos and made less horsepower than the 88-91 which had rotomaster turbos and more horsepower
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SurfnSun
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by SurfnSun »

Mobile Man wrote: Sun Jan 05, 2025 6:32 am I noticed that every post I see is always 88'-90 & 91& up. I'm guessing the 87's are the same as 88's or are they all 88' and title says 87'?

Just wondering if there is any difference and are the 87's still good to purchase.

Also @boostedmaxPSI is from Texas, I'm in dfw if you wouldn't mind sharing how far away you are? Maybe I can stop by sometime.
Boostedmaxpsi sold his car about 5 years ago. Sadly, he’s done with Callaway’s & Corvettes…we are worse off for it. :-frown
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Re: Early Callaway Twin Turbo Maintenance and Performance checkl

Post by Mobile Man »

I go from platform to platform too, but never far off lol

So could someone kinda "breakdown" the differences in the years. I've did my Google and wiki research but this is why I joined to learn the one and outs.
Hp / tq, parts that don't interchange, is there a "bad" year to get. Things like that? 😁 please
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