EVOizmm

iTrader: (10)

the OEM hardware uses serrated flange locknuts/bolts. but after they are used over and over, they don't work like they used to. (Some replace their bolts with a standard hex head bolt/nut that they found at the hardware and have no anti-vibration to them at all)

I think any gasket will blow out once clamping pressure is loosened up. at WOT, you are making some high exhaust pressure, not to mention the high temp too.

For heavy track use, safety wire. its easy and cheap, and you don't have to worry about it.

Pure EvoIX

iTrader: (7)

Ok, will do. We will try to safety wire it. Also both flange ends are truely flat now. My shop made sure of it. Also they used GTR hardware to replace the oem ones. They usually check and retighten after every session.

Pure EvoIX

iTrader: (7)

Quick Update!

Yay, no more bolts backing out or loosening. FINALLY! Problem free day. Was only .3s off my personal best with a 1:53.6xx at Buttonwillow 13CW. Temps were in the mid 40s to 50s.

1:53.396 was with sticker tires and a splitter/airdam/endplates and 20F hotter weather.

I still lost and got 2nd place lol. Lost to a fierce competitor who never say die, who did a 1:53.4xx on the last lap of the last session of the day. Talk about delivering when the pressure is on.

Pure EvoIX

iTrader: (7)

GTR hardware was used, both flanges was decked flat. Some other tricks were used to make sure it doesn't happen again, but it was not safety-wired this time.

CBRD

iTrader: (60)

agreed- but just saying- we dont have an issue-

cb

Pure EvoIX

iTrader: (7)

Here is my hotlap from Sunday. 1:53.693. No splitter.