Part ID

garymcgowan_old · January 30, 2007 at 11:55 AM

Can anyone tell me what this part is used for? It has C3OZ-6378-A and M590650. I'm being told it is a damper washer that is specific to the 289 K code engine. Is this true or is it just a washer used on any small block engine?

Thanks for your help,

Gary

s2ms · January 30, 2007 at 1:48 PM

Gary, the Ford MPC I have shows that part# as specific for the HiPo. Dave

garymcgowan_old · January 30, 2007 at 2:14 PM

Thanks Dave. How hard is it to find that part in NOS form? If you know.

Thanks,

Gary

tater_51_old · January 30, 2007 at 5:56 PM

Reproduction, NPD catalog, page 82, less than $12.00

66KGT_old · January 30, 2007 at 7:34 PM

Or on fleebay NOS for around $100. $12 also is expensive for a ding dong washer, these aren't airplanes we are restoring here... lol

RPM_old · February 3, 2007 at 12:05 PM

That part number is specified for the 289 Hipo only.Fairly tough to get frpm what I see as that washer is alot thicker then standard washer on 289.Has to do with the balancer is why Ford redesigned the washer.Good part about buying repop is because it's on the balancer noone will see it but never had repop to see what the thickness is compared to an original.Anybody have any imput on the difference if there is any in original and repop thickness?

garymcgowan_old · February 3, 2007 at 1:23 PM

Thanks to everyone who responded.

Gary

s2ms · February 4, 2007 at 11:38 PM

There's one on ebay right now, Item# 150088396849.

RPM_old · February 5, 2007 at 6:13 PM

Unfortually everyone who has a Mustang or 289 has a Hipo car or motor but without more specifics other then a lame pic and description saying it is so just don't make it so.GOOD parts are getting alittle tougher to find these days but don't justify the RAPE prices some people want for their stuff and not even the going rate but is for them since it belongs to them!

2K -Joe_old · February 6, 2007 at 8:12 PM

FYI: Hi Po washer #C3OZ-6378A is 0.32" thick, standard washer is 0.21"

garymcgowan_old · February 6, 2007 at 8:46 PM

Thanks to all that responded. So, what are the consequences of using a regular washer on K code engine? Also, is there any difference in the bolt?

Gary

Edited by - garymcgowan on 02/06/2007 20:48:29

2K -Joe_old · February 7, 2007 at 2:04 PM

According to Bob Mannel's book it used a standard bolt with the thicker washer...

garymcgowan_old · February 7, 2007 at 3:12 PM

Thanks Joe. How do I get a copy of Bob Mannel's book?

Gary

s2ms · February 7, 2007 at 10:28 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Thanks Joe. How do I get a copy of Bob Mannel's book?

Gary, you can get the book directly from the publisher's website but you may find it cheaper on ebay or Amazon. This book is a MUST have IMHO.

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>So, what are the consequences of using a regular washer on K code engine?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Well, your HiPo engine could explode with a force equal to a comet hitting the earth. Decades of darkness would follow and cause the extinction of 90% of the life on earth. A few simple vertebrates would survive the disaster and they would evolve into a former very successful life form and dinosaurs would rule the earth once again, hopefully enjoying the K-codes left behind. <img src=images/icon_smile_clown.gif border=0 align=middle>

Honestly, I have no idea.

garymcgowan_old · February 7, 2007 at 11:00 PM

Dave.... Actually the publisher web site was cheaper than Amazon. Thanks for the link. I promise to never use a standard dampner washer and bolt on a K code engine! <img src=images/icon_smile_big.gif border=0 align=middle>

Gary

CB01 · February 7, 2007 at 11:01 PM

The thicker Hi-Po washer implies that the Hi-Po damper is a tad shorter in terms of its thickness at the section where the crank bolt passes through. Using the standard washer might then have the effect of not allowing you to tighten your Hi-Po damper to the correct torque (since there is no difference in the snouts of Hi-Po and non-Hi-Po cranks)...it may even bottom the crank bolt into the snout threads (though I highly doubt it since the difference in thickness is so minute).

I'm just using common sense here...I've never done any testing on this but it makes sense to me.

CB01 · February 7, 2007 at 11:03 PM

Another thought, maybe Hi-Po crank damper bolts are supposed to be torqued down tighter than standard 289s due to the high rpms Hi-Po's were built for, thus the thicker washer???

C6ZZKGT · February 8, 2007 at 11:49 AM Official Post

Bob Mannels great book on small block Fords is available dirctly from Bob for only $35.00 plus $5 S&H. You can call him at 423-245-6678 in Tennessee. His address is RPM PRESS; 340 Clicktown Road; Church Hill, TN 37642-5522. Anybody who thinks that they are a Ford gearhead needs this book. You will need to build up your upper body strength to lift it though as it is an inch and a half thick like a medium sized phone book.<img src=images/icon_smile.gif border=0 align=middle>

-Fred-

round2K_old · February 8, 2007 at 2:43 PM

If you buy it directly from Bob he will inscribe it for you if you ask him. Great guy.

s2ms · February 8, 2007 at 5:31 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Another thought, maybe Hi-Po crank damper bolts are supposed to be torqued down tighter than standard 289s due to the high rpms Hi-Po's were built for, thus the thicker washer???

The 1966 shop manual has the same torque specs for all 289 and 390 damper bolts, 70-90 ft/lbs. Ford surely had a reason for thicker washers on HiPo's, anyone know the answer to this?

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