What questions to ask when buying a used cylinder head?

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Jun 13, 2012 | 07:43 AM

robp2175

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Joined: Jun 2012

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Model: Cherokee

What questions to ask when buying a used cylinder head?

I need to replace my cylinder head and I am looking to buy a used TUPY 0331 head. What questions should I ask to get the best cylinder head? I am concerned about the valves (should I be?), but there may be other concerns I am not even thinking of. Any help would be greatly appreciated. Thank you.

Jun 13, 2012 | 10:19 AM

TheJerm

CF Veteran

Joined: Jun 2010

Posts: 2,501

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From: Flint/Asheville

Year: 1995

Model: Cherokee

Engine: 4.0 HO

Ask if you can return it if the machine shop says its bad.

Jun 13, 2012 | 11:13 AM

lookin2wheel

Senior Member

Joined: Feb 2010

Posts: 587

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From: Barney Georgia

Year: 1991

Model: Cherokee

Engine: 4.0L HO

Quote:

Originally Posted by robp2175

Do a search on here. If Im not mistaken, supposedly the 0331 heads are prone to cracks. Can anyone verify?

Jun 13, 2012 | 11:13 AM

jakbob

CF Veteran

Joined: Dec 2011

Posts: 4,006

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From: Pasadena, MD

Year: 1987

Model: Wagoneer

Engine: Renix 4.0

Quote:

Originally Posted by TheJerm

Ask if you can return it if the machine shop says its bad.

x2.

and do a lot of research.

Jun 13, 2012 | 01:47 PM

Firestorm500

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Joined: Apr 2009

Posts: 4,734

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Year: 2015, 2012

Model: Grand Cherokee (WK2)

Engine: 3.6L

The TUPY head is not the same as the 0331 head, as the original poster wonders.

Take a magnifying glass and a good strong LED flashlight to examine the head for cracks as best as you can.

As in all things, ultimately it is "buyer beware". A used head is always a crap shoot.