GY6 valve job going downhill
2006 YerfDog Spiderbox 3206
Picked this up about two years ago for 800, was garage kept and had meticulous records and only two owners.
Got the front suspension fixed after I sent'er a little to hard on some washboards 😂, replaced original front end with a full BDX HD front end (bulkhead, A arms, knuckles and atv front hubs).
Now to the new issue..valves/top end power loss.
GY6 157qmj: Checked the valves which had almost no gap (way less than .002 on int & really tight .002 on exhaust. .002 is the smallest feeler I have so idk exactly where the int was). Set valve gap to int-.004 and ex-.005 but, I lost 2mph. So, then I set int-.003 and ex-.0045 but lost another 1mph. Before I adjusted the valves I was getting up to 29.5mph but, after first adjustment I dropped to 27mph... Then to 26mph after 3rd adjustment. Though I have a picked up low end torque a noticeable amount 🤷*♂️
I have a jet kit coming as it feels like she is struggling for fuel at the top end. I get up to about 8500rpm and it drives nice no struggle but push to 8600-8700rpms and it feels like she's gasping for "air" (or fuel) ie. Lunging/pulsing at wot.
🤷*♂️🤷*♂️🤷*♂️ Any ideas? Am I on the right track? Am I missing something? 🤷*♂️🤷*♂️🤷*♂️
Help- Please and Thank you
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