Take a look at this first picture.

Top radiator with 30K and 6K on block weld.

Bottom radiator, no block weld but I did run Prestone Stop Leak.

 

 

Second image:
The top radiator was blockwelded three times.

The bottom radiator had 70K on it. There was a lot of crud in it but nothing that blocked the radiator tubes like the block weld one. With this kind of crap running through the radiator, some kind of filter would do a lot of good.

Lesson here: If you do blockweld, be prepared to write off your radiator, heater core, engine and may be even turbos.

I had enough spare parts that this was a risk I was willing to take considering that I have close to 100K.

 

 

are you talking about hte cwc leak sealer???

 

CRC Block Weld and also the K&W Block weld.

 

CRC Block Weld is ok if you can get cooling system angioplasty...

Thanks for the excellent information.

 

Found this filter on the net.

http://neptune.spacebears.com/cars/stories/sctefba.html

I just installed a Fluidyne : BTW perfect drop in although it's not as wide as the OEM radiator on the side. So I need to have a filter here.

 

I htought I would post this exact same response to this thread that I did on another since everyone seems to be refering to this thread quite a bit...cause a little turmoil

honestly though, think about it...you aren't going to stick CRC in a new motor with no probs...I called the guys at RX7.com and asked Me: "if I put this stuff in is it going to affect the rebuild?" (since they are doing my rebuild) RP: "No" If it does in fact clog the radiator then put a $50 used stock radiator in there (if you are running an aftermarket rad) and clog the **** out of that thing...Big freaking deal, I clogged my stock crappy radiator and overheated my engine that's needs a rebuild anyway. I have a brand new Koyo sitting behind my futon now just for that reason, and it will go in along with the rebuild....and here I am running a FMIC with stock rad and CRC...If I didn't do the CRC I would have shelled out 5.5k about 3 months ago...But here I am, bad seals and CRC still kicking ***.

So this is what it comes down to...if you are going to need a rebuild anyway, why the hell not stick that stuff in there and get the most out of that old bitch?

 

How would you compare the performance of the CRC vs. the Prestone Stop Leak?

 

lol, at least its proof that it actually does what it says itll do!