Using non-HiPo timing chain

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Using non-HiPo timing chain

Postby GregS » Wed Mar 14, 2012 8:59 am

I'm about ready to give up looking for a new or NOS replacement for my original chain and gears. The Nylon gear was about ready to go toothless. If I eliminate the small hatchet weight behind the crank sprocket, I will balance the rotating assembly to allow for this change. Can I then just bolt on the non-HiPo parts? I already have a Cloyes Double Roller set. Will have have any issues with the oil slinger or the front cover?

Any insight would be appreciated. (If you have a nice original setup for sale, let me know)
Greg
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Re: Using non-HiPo timing chain

Postby C6ZZKGT » Wed Mar 14, 2012 11:15 am

The Hipo engine has the extra counterweight to move some of the balance away from the nose of the crankshaft. Ford really felt that this was important or they would not have gone to the trouble of creating a special counterweight and lower sprocket. I always use the Ford setup on my Hipos.

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Re: Using non-HiPo timing chain

Postby GregS » Wed Mar 14, 2012 12:51 pm

Any idea where I can purchase a new "Ford Setup"? I'm a little concerned about 47 year old nylon, even on a NOS cam sprocket.
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Re: Using non-HiPo timing chain

Postby Potassium » Wed Mar 14, 2012 11:02 pm

Greg what my engine man did was to replicate a NOS crank gear by machining an aftermarket crank sprocket down to allow room for the hatchet. As for the cam sprocket and chain I belive that they are available in the aftermarket as well. I agree with Fred in the fact that the "hatchet" counterweight is an important part of the hipo package. BTW my engine man insisted to make the crank sprocket after what I told him what I paid for a NOS sprocket. He charged me a half hour shop time to machine the gear.
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Re: Using non-HiPo timing chain

Postby Mad4HiPos » Thu Mar 15, 2012 10:30 am

GregS wrote:Any idea where I can purchase a new "Ford Setup"? I'm a little concerned about 47 year old nylon, even on a NOS cam sprocket.


If you're not concerned about having a Ford set I believe The narrow HiPo setup is still available from Cloyes. I found these numbers in my notes, I assume they are still good...

CLOYES S350 - 289 Hipo Cam Sprocket
CLOYES S351 - 289 Hipo Crank Sprocket
CLOYES C358 - 289 Hipo Narrow Timing Chain

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Re: Using non-HiPo timing chain

Postby GregS » Thu Mar 15, 2012 2:58 pm

I saw those numbers earlier and asked Cloyes if they were correct, and still available. So far, no response. :(
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Re: Using non-HiPo timing chain

Postby zray » Thu Mar 15, 2012 8:02 pm

GregS wrote:I saw those numbers earlier and asked Cloyes if they were correct, and still available. So far, no response. :(


I believe you can go on rockauto.com and get all the above parts.

CLOYES Part # C358 Pitch: 3/8 In.; Links: 58; Plates: 7; Single Roller
Category: Timing Chain

$13.60

CLOYES Part # S350
Category: Timing Cam Sprocket
* Non-stock item--shipping delayed up to 2 business days
$48.79


the crank sprocket is not showing up....

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Re: Using non-HiPo timing chain

Postby bobmannel » Thu Mar 15, 2012 9:15 pm

O-Reillys shows the crank sprocket available.
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Re: Using non-HiPo timing chain

Postby GregS » Sat Mar 17, 2012 9:37 am

Just ordered the S351 and C358. I'll let Y'all know if they are correct once they arrive.
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Re: Using non-HiPo timing chain

Postby GregS » Fri Mar 23, 2012 7:35 pm

Received the package from O'Reilly today. The sent a box marked S351. Unfortunately, the gear inside was S451. Not even close! :( The C358 chain looks correct.

Looks like I may end up using my old gear, which is actually in pretty good condition.
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Re: Using non-HiPo timing chain

Postby cobraboy » Sat Mar 24, 2012 2:29 am

Greg
It is possible to use a standard gear. Simply turn down the rear to end up with the same depth as your original, then drill a hole by putting both gears on the crank keyway and drilling through the original to set out the hole, then finish off in a drill press.
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Re: Using non-HiPo timing chain

Postby KGTCONV » Mon Mar 26, 2012 1:19 am

Guys, MARV has the Hipo timing sets that fit-I got mine from him over 4 years ago and it fit perfectly and there are no problems so far with it.
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Re: Using non-HiPo timing chain

Postby FXguy » Fri May 04, 2012 11:44 pm

The chain is the thinner chain (358) and is readily available from Autozone, as is the 406T cam sprocket with integral C spacer (same as the nylon tooth original, but all metal). The problem piece is the crank gear with the proper thickness and alignment hole for the counterweight - Cloyes rep told me that the only reason the gear was available again in late 2010 early 2011 was that they had found some that they didn't know they had - and that he was unaware of any plans to make any more. However, you can buy the standard crank gear for a non-hipo and have it machined as Mark mentioned. The whole set-up gears, chain, and new Melling thrust plate, is less than $40 total from Autozone plus the shop time to machine the crank gear. I was fortunate in that my crank gear was in great shape and reusable, but I bought the standard gear to machine and keep around as a template for future projects.

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