Houston 420R Dry Sump Guard Help

[williamwashere]

Has anyone tried assembling a 420R lately? Mine showed up without the dry sump guard installed, and for the life of me I can’t figure out how I could attach this without milling the bottom of the engine down. What am I missing? There is absolutely no clearance for this.

 

[JohnCh]

Caterham production tolerances can make these a PITA to fit. I've read that Caterham has suggested standard cap head bolts rather than the supplied shoulder bolts if needed. This allows the threads to sit closer to the bottom of the bellhousing through holes and free up a little clearance. 

[williamwashere]

Thanks. I think I’ll try this today. Josh at Rocky Mountain Caterham said these were bolts 3 and 4, the hardest part of the build, and I can see why. He also suggested tapering the supplied shoulder bolts and heating the nylon guard so it fits a little better. I'll report back when I find a solution that works!

[JohnCh]

You're in good hands with Josh. He has a lot of firsthand build experience and has figured out some tricks along the way.