1966 Fan Clutch missing flat spring and valve rod

[Richard M.]

Flat bimetal spring and what I think is a small diameter rod for the valve piston. Are these parts available anywhere?

What happens with these missing? When hot, the clutch/fan won't freewheel, right?



Repro that K&B makes for reference photo....



Rich

[Ed S.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Richard,

I don't know about the availability of parts but, these guys restore clutch fans. http://www.kirkconnellcorvettes.com/
Hope this helps.

[Richard M.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Thanks Ed, I decided to get a new K&B unit, coming Monday. Will likely send the original out to be checked and fixed up later.

Rich

[Bob W.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Richard Please post how the K&B unit works out and how it looks.

Bob

[Richard M.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Bob, I used one on a '67 BB not long ago. Worked fine and looks very nice.

[Leif A.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Richard Please post how the K&B unit works out and how it looks.

Bob

Bob,
Installed a K&B on the L79 about 9 months ago. Performs as advertised. Full lockup at 165*. High quality piece.

[Bob W.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Richard-Leif Thanks for the quick reply and photos looks good.

Thanks again Bob

[Ed S.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Thanks Ed, I decided to get a new K&B unit, coming Monday. Will likely send the original out to be checked and fixed up later.

Rich

Richard, -- I discovered that the clutch fan on my '64 L76 is actually a unit designed for a BB. It is a "CK" instead of a "CJ". It appears to function fine but I do want to install the correct clutch mechanism - but prefer one that will pass NCRS judging. You indicated that you ordered a unit from K&B. Not familiar with that vendor - all I can find on the internet for them is this website:

http://www.kandbcorvetteproducts.com/. Is this the K&B you are referring to? When I go to that page it lists products but there are no active links - impossible to research parts. Like others have asked, please report back on your satisfaction with your K&B clutch fan.

Thanks much.

[Rich G.]

Re: 1966 Fan Clutch missing flat spring and valve rod

I just put a K&B clutch on my 66 L79. Works great, looks great. My car is a driver so I don't know how it would judge. I found it advertised in Drive line and bought through LI Corvette.

Rich

[Bob W.]

Re: 1966 Fan Clutch missing flat spring and valve rod

ED That is the K&B that Richard is talking about . Just give them a call.

Bob

[Ed S.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Rich - Bob, Thanks. I checked the fan specs out on LICs website - according to LIC, the fan they carry is a KB repro and is probably a quality product but, it does not have the patent stamp or date code - I doubt it would do well in judging. I need to do some research re exactly what fan was OEM for a '64 L76. As I previously stated, the one on my car is an Eaton coil type unit and it has a CK ink stamp. It is on the car and I have not yet found a date code anywhere (it may be a repro and does not have a code). At any rate - I need to determine which clutch is correct for my car and go from there. I recall the judging guide stating that Eaton's and Schwitzer's were used and are acceptable. Wondering, besides the ink stamped CK (vs CJ) what is the difference between a SB and BB clutch?

[Richard M.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Rich - Bob, Thanks. I checked the fan specs out on LICs website - according to LIC, the fan they carry is a KB repro and is probably a quality product but, it does not have the patent stamp or date code - I doubt it would do well in judging. I need to do some research re exactly what fan was OEM for a '64 L76. As I previously stated, the one on my car is an Eaton coil type unit and it has a CK ink stamp. It is on the car and I have not yet found a date code anywhere (it may be a repro and does not have a code). At any rate - I need to determine which clutch is correct for my car and go from there. I recall the judging guide stating that Eaton's and Schwitzer's were used and are acceptable. Wondering, besides the ink stamped CK (vs CJ) what is the difference between a SB and BB clutch?

Ed, The mounting shaft hub height(length) is the difference between SB & BB. The shorter shaft is BB, longer shaft is SB. You may be able to see the difference in the BB picture in my earlier post versus the SB 2nd picture in Leif's post. The K&B Schweitzer(sp?) reproductions do not have date codes.

In a Regional judged meet this year, the one in my photo lost 1 point (Originality-Finish) . Note from sheets.... "S/B silver paint to shaft step". It lost no point for Date. I'm uncertain why.

I got/get mine from Zip Corvette. They also sell the K&B products.

Rich

[Richard M.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Here you go, just got it yesterday..... (edited...I added more photos for comparison of original to the K&B. Very nice repro IMO)

Has the "CJ" ink stamp too. BTW, it actually is dated.




Comparison photos......


Note the date on the edge on originals.

[Ken A.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Great Pictures!

[Leif A.]

Re: 1966 Fan Clutch missing flat spring and valve rod

Where's the date, Rich??