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948 Fan flex?

livinginthepast

Jedi Trainee
Offline
Hey there,

Got the slightly modified radiator ready to install. The mods have increased the thickness of the core by about half an inch (he told me were at 3 rows/11 tubes). Now, it would seem that there should be plenty of room in front of the fan, but I'm curious how much flex I should expect from that fan blade at higher rpms so that I can be sure that blade won't meet core at high revs.

It looks like there's room to drive a truck through there, but I'd rather ask first than find myself with a hole saw chopping through the radiator while on the freeway!

If this works, I will no longer fear trips over Snoqualmie pass into eastern wa. during the summer. If not, I'm out some cash and will walk away with my tail between my legs all the way to the Moss catalog... :smile:
 
Maybe you can drive truck thru it but how big a gap is there between the fan and the radiator?
BillM
 
I suspect that the stock BE fan does not flex at all.
 
The metal fan does flex a little but it flexes back towards the engine.
My daughter's Bugeye with a 1275 and the old style metal fan will flex under fast acceleration to where you can hear it hit the timing cover oil separator.
It's enough to scare the heck out of you because it sounds just like a rod knock.
I even tried to bend the blades and every now and then 1 blade hits that can with a tick-tick-tick.
I also had a radiator recored with 3 rows with no troubles on a different Bugeye.
 
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