Re: [Amc-list] Response to Oiling Problems and lifters

[Todd Tomason <jayscore@xxxxxxxxxxxxx>]

Jeff,

I'm in the process of building my first engine, so this issue has me 
concerned.  I've been doing some research on the web this evening, and it 
sounds like the AMC lifters and the Mopar lifters are virtually identical.  
They're so close that most of the aftermarket parts suppliers have made a 
single part that fits both.  I don't think they're mixing up the AMC 360 and 
the Mopar 360.  They parts are really that close.  This article about Mopar 
Magnum engines mentions using AMC lifters.  

http://www.popularhotrodding.com/tech/0507phr_mopar_magnum_engine_specs/

But here's what puzzles me.  Some of the Mopar engines don't provide oil 
through the pushrods, so they don't require a hole in the lifter.  If you 
were going to make part to fit both, wouldn't you make it with the oil hole?  

Do you have the manufacturer and part numbers for the parts you received?  I 
can't figure out where Summit Racing even found solid-top lifters.

Todd

On Thursday 30 August 2007 14:38, Thomas, Jeff wrote:
> I have a comment on a recent meltdown that my AMC 360 experienced
> related to new lifters. I am hoping this story will help save a lot of
> you a great deal of pain and money.
>
> I bought a cam and lifter set from Summit ealier this year and got
> everything installed in July 2007. The problem I ran into was zero oil
> to the top end of the motor. I had good pressure for about 45 minutes
> during the break-in and I thought everything was fine. Took the car for
> its maiden voyage and after about 20 miles lost all my oil pressure
> suddenly and the car got incredibly hot. When we got it home and tore it
> apart the heads were as dry as a bone, no oil circulating. All 16
> pushrods were either bent or broken.
>
> When I pulled the "new" lifters out and compared them to the old AMC
> lifters I had replaced I found a terrible problem. The new lifters,
> while physically the same as the old AMC lifters, had the oiling band in
> a different location than the originals. The second issue was the new
> lifters had no oiling hole drilled through the center. The AMC lifters
> clearly have a squirt hole for oil through the center and an oiling band
> in a completely different place than the new lifters. I called Summit
> and questioned the tech guy. His answer floored me "the supplier has
> grouped all AMC 360 lifters with the MOPAR 360 lifters. They are
> basically the same motor so the lifters should work the same way." I
> said "you're kidding right ?" and he said "No. That's the way our
> in-house tech manuals read and that's the way we sell them". Sure enough
> if you go on-line to Jeggs, Summit or look in a Mellings book the
> lifters all have the same part number. In other words AMC 360 and MOPAR
> 360 are the same to them. I don't mean the Chrysler 360 that's in the
> Grand Wagoneer I'm talking about the MOPAR 360. The cam fit like a glove
> so they got it partly right.
>
> I have been meaning to post this thread to the AMC community at large to
> warn everyone to take a close look at their lifters before they drop
> them down the bore and fire it up. I am at least $400 down in rebuilding
> the heads not to mention scuffing/tearing up the paint in my engine
> compartment when I pull out the block and tranny this weekend. Pay
> attention to your business. I didn't and I should have known better. The
> best advise is to buy your stuff from an AMC vendor that sells the right
> parts for a living. If I do another engine I will definirely be talking
> to Doug, Jeff, Jim, Bruce, Nick, Andre etc. Those are the guys that know
> what you need. Best of luck from Florida.
>
> Jeff Thomas
> Orlando Fl
> 407-297-9500
>
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