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TB v2 racehead work

This is a discussion on TB v2 racehead work within the KLX110, DRZ110, TTR90 forums, part of the General Talk category; I've been running this on my 155 with great results. I just installed the Takegawa +r roller rockers and TB titanium retainers. Wow, the +r ...

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  1. #1
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    solidjohnny's Avatar

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    TB v2 racehead work

    I've been running this on my 155 with great results. I just installed the Takegawa +r roller rockers and TB titanium retainers. Wow, the +r rockers seriously feel like they are half the weight of the stock ones!! The retainers are a good bit lighter as well.

    While I had the valves out, I discovered that both valve seats created a pretty sizable lip where it's seated into the ports. I carefully ground the lips flush and also took down all the casting flaws I could safely reach with the bit I was running.

    I was gonna take pictures, but there isn't really anything to see. I haven't had a chance to run the motor yet to see if there was any difference. Just thought I'd share.


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    KlxRacer#2's Avatar

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    ya we took my head apart and noticed it wasnt that great and was ported by LCS minis. Took it apart to find titanium valve retainer and exhaust valve i believe , we ended up switching them to my other v2 head. But you are right it seemed to be a tad bit lighter and better looking as well

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    johnny when your ready lmk and can help get you Kibble white black diamond SS valves.

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    50WHIP's Avatar

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    Can you get those valves for the +r or any info so I can get them ? Thanks

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    wow, so I finally got a chance to ride my bike. It ran rough. Checked the plugs, was running lean. So i went up one jet size and it improved. I taped off a portion of my bbr u-flow and it ran perfect. Noticable power increase (could also be from the lighter rockers yah?) Looks like I gotta go up another jet size! Guess my little port job really made a difference!

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    Just in case anyone is wondering. I'm currently running a PWK28 with a 45 pilot, needle in the middle position, and a 120 main. Prior to the head work, i was running a 115 main with the needle in the middle position. I'm guessing it needs a 125 main jet.

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    The R+ valves have much smaller stem so they wont fit!

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