whats up.. so i just picked up a JDM D15B, and i noticed that the header piping looked a little weird to me.. dont know if its a problem or not, bu in the picture below you will see the piping off of the #1&4 cylinders look like they were firing just fine due to the discoloration.. but the piping off the #2&3 cylinders look like they havent seen any heat..?? im wondering if it was a lack of spark.. compression? anyone ever seen this before and should i be worried about it? im getting ready to start replacing parts to swap it into my EX coupe.. just wondering..

 

bump..... anybody? almost 200 views

 

btw my intentions are to take the head off and replace the HG aside from the other routine swap stuff like Tbelt n Waterpump etc... just wondering if theres anything i should look for in specific.. hopefully i will have the head off tomorrow if i get some time to work on it..