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| Head Bolts https://slantsix.org/forum/viewtopic.php?t=38785 |
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| Author: | dakight [ Wed Jan 27, 2010 4:17 am ] |
| Post subject: | Head Bolts |
It ocurred to me that push rod length may not be my only concern. With a total of .175 removed between the head and the block, do I need to worry about the length of my head bolts? How much clearance do I need at the bottom of the hole and is it safe and prudent to grind some length off of the bolts? |
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| Author: | Dart270 [ Wed Jan 27, 2010 7:13 am ] |
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If pre'80 iron block, then you are probably fine. Best to check though. I have heads with up to 0.110"manifold side/0.210"plug side angle mill and no issues. As long as you are still on the threads (turn easily), then you should be OK on length. If you are bottoming out on not-fully-cut threads, I would worry. Lou |
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| Author: | 66aCUDA [ Wed Jan 27, 2010 7:39 am ] |
| Post subject: | |
I checked my block after decking and before assy. I had over .200 more than needed before I would bottom out. This was with .100 off the block. I would make sure you run a clean out tap down there (you should do this for ALL the bolt holes anyway). Frank |
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| Author: | VDART [ Wed Jan 27, 2010 6:28 pm ] |
| Post subject: | |
rather than cut the bolts could you not add a washer? Just asking ,Lawrence |
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| Author: | Joshie225 [ Wed Jan 27, 2010 7:04 pm ] |
| Post subject: | |
Quote: rather than cut the bolts could you not add a washer? Just asking ,Lawrence
I do!
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| Author: | dakight [ Wed Jan 27, 2010 10:57 pm ] |
| Post subject: | |
Actually, I thought of that too. I've seen head bolts that use washers but I believe they were machined, not stamped. Where would I get them? |
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| Author: | DadTruck [ Fri Jan 29, 2010 6:12 pm ] |
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http://www.boltdepot.com/Washers.aspx grade 8 hardened washers |
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| Author: | Joshie225 [ Fri Jan 29, 2010 7:01 pm ] |
| Post subject: | |
Quote: Actually, I thought of that too. I've seen head bolts that use washers but I believe they were machined, not stamped. Where would I get them?
I bought mine at an engine rebuilding shop. If you wanted to mail order some you could get these from Summit. http://www.summitracing.com/parts/MAN-42102/ It's enough washers to do a couple of slant heads. The .125" thickness will make up for a pretty good head milling job too.
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