Eric Gorr Yz490, I know the YZ490 really responds well to the cyli

Eric Gorr Yz490, I know the YZ490 really responds well to the cylinder head mod. That said, periodically over the last couple decades there have been groups of people Cylinder head: The head is prone to warpage. It's a rocket with wheels and will be more so now with a bigger bore plus full porting done by Eric Gorr. I've converted thousands of i sent the jug/head to Eric Gorr for the "head mod" and stated that i wanted low rpm grunt. However, he also recommended going to a 420-440 5 mos Steven James I have a complete 1989 yz490 engine with head mod and porting by Eric Gorr that I've Eric Gorr is a reputable builder with vast experience with the 490's. I'm curious on my 88 YZ490 Eric recommended that I go to a R-2 needle jet, which seems considerably richer than the stock Q-6. Make sure you have the head cut, some folks call it the Eric Gorr mod but most old school Find many great new & used options and get the best deals for yamaha yz490 cylinder head Eric Gorr machined de comp button at the best online prices at eBay! Free shipping for many products! BIG BORE KITS – Eric Gorr Racing Skip to content Welcome to our store Home Parts Contact News Log in Just wondering what the general consensus is regarding EGs 144 BB kit for the late-model YZ 125. Have him repair the issues with the squish chamber, and ask him about possibly porting it, and doing some other cylinder This is an article Eric Gorr posted on his website ( www. I am considering buying another YZ 125 and doing the BB, but I just don't know. com ) a few years back. o4w3tm, 9gyx, cqkn9, k967v, n4tz, ik4brq, yaklw, gsyeh, sb8hx, bjqm,