Posted November 19, 2012 - 02:49 AM
Took it apart and the timing was completely out to lunch, bent valves (intake took the worse), but no other damage! You can see where the valves "cleaned off" the carbon on top of piston, and some very, very minor contact impressions on piston itself once we cleaned it. I have to say, I'm pretty impressed with the Athena forged pistons in their big bore kits.
So, I need valves, and get the seats redone, timing chain (Timing chain was the culprit btw...it was whipped...my bad).
OEM valves, or SS valves? If SS Kibble White still the best going?
I only trail ride...no racing, no track, etc.
Posted November 19, 2012 - 04:47 AM
Posted November 19, 2012 - 05:07 AM
Anyone have a opinion as to pro-X vs Kibble White?
I'm REALLY impressed with the Athena big bore kit....the cylinder looks like the day we put it in after 100 hours on it! The forged piston as mentioned hardly has a mark on it from hitting, you can barley see the slightest of impressions from the valves.
Thank god I only tried the estart and heard the horribly sound instead of it jumping timing under power on the uphill portion! Timing chain will now be changed every second season at least no matter what, and maybe every season depending on how much riding I get in.
Posted November 24, 2012 - 02:12 AM
Posted November 25, 2012 - 05:23 AM
Spring Kit - $288.00
Titanium valves - $156 each
Now, the titanium valves are wisco, and I have not priced OEM yet.
Once I do, if they are a lot cheaper then aftermarket titanium, I have no issue going oem valves. The current set lasted a LOT of hours.
Posted November 25, 2012 - 10:51 AM
Posted November 26, 2012 - 07:25 AM