Started by FranBunnyFFXII, June 21, 2022, 10:09:06 PM
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Quote from: FranBunnyFFXII on June 21, 2022, 10:09:06 PMI watch Kevin Baxter on youtube, the engine builder for Pro Twin performance (Skunkworks), and he was talking in on of his 128 build videos about a new headbolt torque sequence and torque spec that they developed with SnS.https://youtu.be/KshqOOyaoKsThis seems quite interesting, and may be a good idea for M8 engines for longevity.It seems 10->20->30->Back off 1/4th turn, wait 15min, then 45 ft lbs final torque.He doesn't go over the exact procedure entirely, but there's enough info there to figure it out.How different is this from the standard M8 headbolt torqueing proceedure.I was thinking about getting a set of S&S headbolts and doing this, without removing the heads, just pull the bolts put the new ones in with the torque sequence and spec that he used.I'm well aware that this stuff is probably largely irrelevant and pointless durability upgrade for a stage2 bike with a 55mm manifold. But I am replacing the rocker arms, and studs. But whatever, the both are like 120$ and maybe I'll want stage 3 later on, who knows.
Quote from: turboprop on June 22, 2022, 10:27:31 AMYou guys are no fun and are messing this all up. What a great opportunity to have some fun. OP - Yes, definitely yes, change those head bolts. This is critical. Don't delay. Oh, you should also probably start anther thread to discuss what type and how much grease (if any) should be used under the heads and on the threads of these new head bolts. Dont forget wear rubber gloves and to take lots of pictures.These threads are worthless without good pictures.
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