my 4k in my ke70 keeps f@$king these since the twin 40mm solexs were fitted, My theory is due to it having a stock exhaust and exhaust manifold is that its getting all this air and fuel in so quickly but it can;t get it out, causing extreme heat and pressure, there for blowing out the weakest link. Am i just full of shit or could i be correct. Also to fix this problem i have considered putting extractors and a 2 inch exhaust system on it,
Do you think this will solve my problem? also where can i purchase extractors for these from at a resonable price
cheers josh