Does anyone have experience comparing the two? Is one significantly better than the other?

 

I purchased the Trackspec radiator w/ EOC a couple years ago and it developed some water leaks in the corners where the tubes go into the side chambers after about 2 years and ~4000 miles (street and HPDE). I talked to John at Trackspec and he told me that their radiators are made by DeWitts. The Trackspec radiators do not have a warranty however, John suggested I speak to Dewitt's to see if they would cover it under warranty and they declined. If I purchased directly from DeWitt's, it sounds like it would have been covered HOWEVER, I would need to ship it back to them (my cost). I "think" the Trackspec radiator has larger tubes than the DeWitt's however, I could be wrong. I ended up taking my radiator to a local outfit for evaluation and they wouldn't touch it since aluminum radiators are/can be very tricky to fix. So, since I didn't have any other options, I got some high temperature J-B Weld epoxy, cleaned up the areas where there were leaks with aluminum cleaner and epoxied them up. I now have 3 months and ~1000 miles with no leaks. (knocking on wood!)

Hindsight being 20/20, I don't know if I would have done anything different. Even if I bought the DeWitts, I still would have had to ship it back on my dime and that isn't cheap (boxing and shipping).

Without a doubt though, the Trackspec radiator dropped my coolant temperatures by ~15°F but more importantly, my oil temperatures dropped ~20°+F (during HPDE in 90°F+ days).

 

Thanks for the info! I have a C5 that I installed a Dewitt radiator in, which works great, but I recently got another C5 which came with a trackspec radiator and I have been trying to decide if its worth the hassle to put the Dewitt radiator into the newer car before I sell the old one.

 

I just had the same issue that ericba had with his, but mine is the DeWitts version. Passenger side very bottom corner front side back. Took it to a radiator shop and they couldn't fix it either. They also epoxied both sides and said it was a temporary repair and not to rely on it long term. I had an extra aluminum radiator in the attic that from ECP, so I put that in and I'll use the DeWitts as a shop sign I'm making from it. I also emailed DeWitts about the warranty part but haven't heard back from them yet. I'm not expecting them to replace it though after hearing what ericba said.

 

mstromquist you definitely should have talked to John @Dewitt’s they took care of my problems at no charge except the shipping cost back to them

 

Unfortunately aluminum radiators can be kind of problematic. They usually don't leak as in strand you. They will just annoy you to death.

Me personally, I have fixed several aluminum radiators (not in corvettes but it doesn't matter) using the AC Delco coolant tablets.

They do work usually 100%.

I don't know if it is true or not but I've heard over the years that some OEMs have used these right from the production line as a preventative maintenance.

 

Maybe I'll hear something tomorrow. We shall see. 😎👍

 

I found calling them to be more effective

 

Got an email from John this morning. The radiator I have is over 20 years old and was new before the lifetime warranty went into affect. So it was much older then I thought when I bought it a few years ago and I got taken even worse then I thought I did. He offered me good discount so I'm pretty sure I'll just go that route and get a new one. He said if they didn't put that epoxy on it that they might have been able to fix it, but that's not an option of course now. So I'll keep the old one and use it for my garage sign I'm making out if it.