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Re: Type 1 twin screw supercharger build / 9 yrs later I'm back at it
Posted: Wed Apr 02, 2025 5:54 pm
by Alexander_Monday
Holy cow, almost 0.006" new?
That is over D × 0.0025.
I'd be sending them back, unless it was pro stock or top fuel.
Made a lot of aluminum swarf tonight.
Guess what they are:
Re: Type 1 twin screw supercharger build / 9 yrs later I'm back at it
Posted: Thu Apr 03, 2025 3:55 pm
by Alexander_Monday
Wow, Speedway Motors doesn't mess around shipping, got the King CR 803XPN SBC small journal narrowed rod bearings today!
So nice when something measures exactly as advertised:
(I only opened the first package of 8 and all except 1 which was 0.0620")
Vs the Mahle CB-610A bearings:
This will give me 0.0017" clearance with 1.9991" journals which is D * 0.00085.
Unfortunately, I will have to make a jig to take 2mm off one side of each bearing.
Can't have my cake and eat it too, but my bad since they are advertised as 20mm wide while the Mahle's are 18mm wide)
Re: Type 1 twin screw supercharger build / 9 yrs later I'm back at it
Posted: Sat Apr 05, 2025 8:57 am
by Alexander_Monday
Designed a jig to narrow the bearings on the lathe.
3D printing it now.
