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Old 08-23-2009, 10:26 PM   #1
Do_It_Sidewayz
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Default Cylinder head dowel pins

It looks as though it is possible to use 4 cylinder head dowel pins on each head, instead of the stock 2 pins.

Has anyone tried this?? is it worth the effort?

Seems like both the block and head are machined to fit the things, but only uses 2 from the factory.
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Old 08-23-2009, 11:52 PM   #2
sense of nature
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What would be the need to do so ? Why not just use head studs if guides is what your looking for ?
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Old 08-24-2009, 12:13 AM   #3
WrXtaCy2003
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For one I don't think it would be worth it because the two dowel pins alone don't allow for any movement when the head is placed onto them, sooo adding a third or a fourth doesn't really do anything because there was no extra movement to begin with. Also there is no reason to fix what isn't broken. Nobody has alignment issues.

In response to sense of nature, head studs (arp's) don't fit snugly into the head holes, so if there is no dowel pins in the block and you place the head onto a block with arp studs, there is actually freeplay in which you can move the head around. So using them as guides would not work.

DK
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Old 08-24-2009, 12:32 AM   #4
sense of nature
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Makes "sense"
I see what he was referring to as far as the need for the extra dowels goes.
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Old 08-24-2009, 12:45 AM   #5
WrXtaCy2003
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we could always tig weld them together. That should keep'em together!

I vote boycott ARP!

DK
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Old 08-24-2009, 12:54 PM   #6
Do_It_Sidewayz
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My impression is that the Dowels are really going to hold the things in place, while the studs are going to be holding them down.

I've got like 4 dead blocks around, and it's pretty easy to just put in the dowels. I can't say that it would hurt.
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Old 08-27-2009, 11:49 PM   #7
Texy32
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Default dowels

I have but all 8 dowels on the last three builds I have done. It just make sense to me to use the extra dowels.
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