Replacement Head Options

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DPDISXR4Ti
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Replacement Head Options

Post by DPDISXR4Ti » Wed Aug 08, 2018 9:28 am

Not an immediate requirement, but I know the stock "86TM" heads are prone to cracking. World Products used to make an upgraded head with a thicker deck, but they no longer sell it. It would appear however that most of the new replacement heads available today from places like Promaxx & King Cylinder Heads use the improved casting. Is this correct? Is there a way to easily (i.e. externally) identify these in the field (junkyard)?

What about the later "89TM" heads that were used on the Ranger 2.9 starting in late '88? Are these essentially equivalent to the World Products heads and plug-n-play swap-able? Here's a pic showing how to identify those...
Image
Brad

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Re: Replacement Head Options

Post by Merkurfast » Thu Aug 09, 2018 10:58 pm

I dont know the answer to your question, but I purchased 2.9 89 heads from Pep Boys with a coupon.. They are ATK brand. I imagine they are the same as Ranger heads. They are the improved type. I researched the ATK brand and they are pretty good.

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Re: Replacement Head Options

Post by brokencase » Fri Aug 31, 2018 7:27 pm

The newly made ITM heads appear to have square pedestals.

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Re: Replacement Head Options

Post by DPDISXR4Ti » Fri Aug 31, 2018 8:56 pm

brokencase wrote:
Fri Aug 31, 2018 7:27 pm
The newly made ITM heads appear to have square pedestals.
Like the ones shown above, on the right? Or an entirely different casting?
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Re: Replacement Head Options

Post by Merkurfast » Sat Sep 01, 2018 12:15 pm

The heads i purchased looked like the ones on the right.

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Re: Replacement Head Options

Post by brokencase » Sun Sep 02, 2018 12:15 pm

DPDISXR4Ti wrote:
Fri Aug 31, 2018 8:56 pm
brokencase wrote:
Fri Aug 31, 2018 7:27 pm
The newly made ITM heads appear to have square pedestals.
Like the ones shown above, on the right? Or an entirely different casting?
The ITMs are newly made. Probably their own improved design.
You can see a picture of them on ebay or on ITM's website...
http://www.itmengine.com

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Re: Replacement Head Options

Post by john keefe » Mon Sep 03, 2018 1:37 pm

Hey Brad, Had to replace mine a couple years ago. Went with these on eBay (very good rep, gave a lot of info before I purchased) :
https://www.ebay.com/itm/NEW-2-9-FORD-C ... XQPGJSNzr4

They changed their description a bit, and now list these as being manufactured by ProStar. I don't recall if they were ATK or Pro Comp at that time. Nicely finished heads, though. Surfaces all checked out nice and flat. No problems installing, or since, except for the early (typical) valve cover leak, and later a small leak at or near the distributor. Replaced the Dizzy o-ring, same small leak, so probably a weakness in my gluing the back of the intake manifold gasket. I wouldn't expect that to be a fault with the heads.

Don't recall if I used ARP or FlePro head bolts, and if they were Torque-to-yield or not. but I rechecked torque after about 100 miles, and no issues. Exhaust bolts were a PITA, so I rechecked those. I think one or two had backed out slightly, but that could again be installer error.

Has run great since.

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Re: Replacement Head Options

Post by brokencase » Mon Sep 03, 2018 3:43 pm

They look like a good price for a pair assembled. Should use torque to yield.

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