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My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Wed Sep 29, 2021 1:07 pm
by My Corvette Life
Hello! My Name is Chris and I have a YouTube channel called My Corvette Life. I primarily produce videos showing "How-To" maintenance and restoration projects. My next project will be a 1990 Callaway Twin Turbo (B2K). This is #34 of 58 for 1990.

YouTube: My Corvette Life - https://www.youtube.com/chrisdraper2007

This car has been sitting in a storage garage, being neglected, for 15 years (since 2006). It truly is a modern barn find.

I hope you guys will join me on the long journey to bring this car back to it's former glory. I've already read so much helpful information on this forum. It's an incredible resource!

Image

https://youtu.be/MHxB9TB-Qds

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Wed Sep 29, 2021 2:36 pm
by *89x2*
This is great! Can't wait to see you go through this car :thumbs



Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Wed Sep 29, 2021 2:50 pm
by SurfnSun
Welcome to the COG!!

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Fri Oct 01, 2021 11:21 am
by *89x2*
How frequently do you think videos will drop? :wtf

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Fri Oct 01, 2021 11:27 am
by My Corvette Life
*89x2* wrote: ↑Fri Oct 01, 2021 11:21 am How frequently do you think videos will drop? :wtf
Probably 2-3 times a week. I just posted the video of the delivery.

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Fri Oct 01, 2021 9:10 pm
by SurfnSun
I left you some answers on the Kooloff windshield.

This is the forum where you can grab the most knowledge about getting the car back on the road.

I took and 88 that hadn't been driven in a decade and made over 510hp and 700lbft of torque with simple bolt-ons

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Fri Oct 01, 2021 9:16 pm
by *89x2*
Wow, sat 15 years

I can see a replacement alternator, possible R134 conversion on AC, and the exhaust was changed. Later Brakes w/ added drilled rotors.

Is the one front wheel bent? Maybe just the camera angle??

The Kooloff glass is a rare option (similar to what was used on ZR-1). You should see LOF Kooloff on the glass.

From the AIR Pump, missing a hose, and the EGR crossover pipe is missing the cover and be CAREFUL what you replace it with - I saw a velcro (closure) one burn once. Be careful!!!

Looks like a fun project.


Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Sat Oct 02, 2021 1:53 pm
by 1988Callaway#16
Welcome Chris! Nice find. I’ll be subscribing and watching. I have an 88 Callaway convertible #16 that needs some work also. Kevin

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 04, 2021 1:32 pm
by Rudevette
Welcome aboard Chris! I've been subscribed to your channel forever. I love it. Can't wait for the upcoming Callaway series.

-Justin

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 04, 2021 6:15 pm
by *89x2*
So Chris, what's the plan for the car going forward? You have a bit of work in front of you, but what's the game plan?

What will you start on first? Cosmetics? Mechanical? How about the fluids, including fuel? Does it have the factory greenish/gray RP Injectors, still? I've replaced many sets of these on L98-based cars and can help point you in the right direction, as can others here on the Callaway Owners Group site. We are here to help, and more knowledge than anywhere, including the factory. We live and breathe these cars :thumbs

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 04, 2021 7:52 pm
by My Corvette Life
Can anyone tell me the correct fuel pump and replacement injectors?

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 04, 2021 8:21 pm
by *89x2*
Regarding the Fuel Pump, here's the info:
http://callawayownersgroup.com/viewtopic.php?f=4&t=799

On Fuel Injectors, if you can wait for a sale, FIC often discounts 10%-20%, depending on the sale. Mention Callaway Owners Group when you speak to Jon Banner at FIC, as he's treated us very fairly.
Here's' the pert number:
https://fuelinjectorconnection.com/coll ... jector-set

The Stock Rochester Greenish Gray units (Branded RP on body near connector for harness) are GARBAGE. The stainless Delphi units are proven reliable, and they FIT. I get an o ring kit (you will need more o-rings to do your rails, if you do the job completely, and I can supply the part numbers from AutZone, locally). I also suggest replacing the regulator if it's sat, which is cheap insurance.

I hope this helps, and look forward to your resulting success.

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 04, 2021 9:02 pm
by SurfnSun
Bosch 0580254982 is the one listed in the other thread

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 04, 2021 11:10 pm
by My Corvette Life
Excellent! Thanks you.

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Sat Oct 09, 2021 10:33 am
by *89x2*
Hey Chris,

You should push notifications of new videos you add. Looks like 4 have been added since your last post:








Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Sat Oct 09, 2021 11:36 pm
by My Corvette Life
*89x2* wrote: ↑Sat Oct 09, 2021 10:33 am Hey Chris,

You should push notifications of new videos you add. Looks like 4 have been added since your last post:
Subscribe to the channel and click the bell button and you will be notified every time I post a video.

Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 11, 2021 6:22 pm
by *89x2*
Another video added, and to give you insight on your question about why the oil fill is on the driver's side vs. passenger side, it's so you can fill the car with oil without removing the intercooler.
You may not have noticed how the oil cap was far enough back, which allows a small diameter funnel to get in there and fill/top-off. :thumbs

Now to answer the rest, the switch (the bracket with wires) appears like a nitrous activation switch which were common on NOS systems like the one crudely installed on your car. What happens, is when one goes WOT, it kicks the switch and if activated by a secondary switch (usually in the dash somewhere), then nitrous is fed from the solenoids.

On the spark plug wrap, I can't say for sure about the origins of the silver heat sleeve, but the factory heat covering over the EGR Tube, I mentioned already, it's not removable. Your car has some other shielding not consistent with other Callaway Twin Turbo Corvettes, presumably added by the hot rod owner before you. Anyways, the one over the plug wires looks like the velcro closure kind, but was tough to see. Maybe you can confirm :wtf

In the meantime, nice job polishing the one intercooler. Here's to the rest taking shape in similar form. :hi



Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Wed Oct 13, 2021 7:29 pm
by *89x2*
I saw another video was added, this one on the owners manual

Keep em coming


Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Sun Oct 17, 2021 4:13 pm
by *89x2*
Saw you added two more videos. A few comments.

On the one where you mentioned removing the injectors and servicing them. Why? :wtf Replace them, as the original RP (Rochester Injectors) do not last.

It takes two of them going bad to shut down operation of the car altogether, and if they are marginal, the car will just run poorly. The ones I mentioned will be the best price of the year in November during the FIC Black Friday Sale. If you can wait another month, you will save, and get the right parts.

So before you take apart the intake plenum, humor me. Put an ohm meter on your injectors and see what they read. :hi

Now, on the throttle body, The throttle cable is different too. The way the cable connects is different on 85-88 and 89-91 TPI throttle bodies. I have heard of people swapping the linkages over if needed, but your statement was more about why there appeared to be a difference, and there just is...

On the rattle can satin black you used, perhaps it's the lighting, but how close was the color to what was original to the linkage? :pop

Good luck as you soldier on with this project, but please do it right. Take an additional hour to clean up the innards of the throttle body. Take an extra hour to get the right materials, etc. Take an extra hour to go the extra mile. :beer



Re: My Corvette Life: 1990 Callaway Twin Turbo Project

Posted: Mon Oct 18, 2021 6:40 pm
by My Corvette Life
*89x2* wrote: ↑Sun Oct 17, 2021 4:13 pm Saw you added two more videos. A few comments.

On the one where you mentioned removing the injectors and servicing them. Why? :wtf Replace them, as the original RP (Rochester Injectors) do not last.

It takes two of them going bad to shut down operation of the car altogether, and if they are marginal, the car will just run poorly. The ones I mentioned will be the best price of the year in November during the FIC Black Friday Sale. If you can wait another month, you will save, and get the right parts.

Now, on the throttle body, The throttle cable is different too. The way the cable connects is different on 85-88 and 89-91 TPI throttle bodies. I have heard of people swapping the linkages over if needed, but your statement was more about why there appeared to be a difference, and there just is...

On the rattle can satin black you used, perhaps it's the lighting, but how close was the color to what was original to the linkage? :pop

Good luck as you soldier on with this project, but please do it right. Take an additional hour to clean up the innards of the throttle body. Take an extra hour to get the right materials, etc. Take an extra hour to go the extra mile. :beer
I will be replacing the injectors. I wanted to verify what they were first because I know the previous owner replaced them back in 2000. If they were the Delphi units they may have been worth getting serviced, but they are not. Thanks for the tip on the Black Friday sale. I'll wait until then.

The black paint I'm using is pretty close. I actually just order a few cans of real chassis black paint so its as durable as the original.

I've taken apart the entire throttle body and cleaned everything.