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| | | | Joined: Feb 2004 Posts: 11 Member | | Member Joined: Feb 2004 Posts: 11 | The 848 head thats going on my 261 has alignment dowels on each end for the exhaust manifold. These dowels are eroded and rusted significantly. I plan to install dual fenton exhausts and need to remove these dowels and tap the head for standard bolts if necessary. Are these dowels screwed in or pressed in? What is the best way to remove them? Also, I have removed the rocker assy, springs and valves from this head for cleaning and inspection, expecting to find bronze valve guides. Can suitable valve guides be installed on these heads?
Ron B
| | | | | Joined: Jan 2002 Posts: 2,843 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,843 | Ron B,
I asked this question some time back and I believe someone said they are threaded into the head, though I have yet to see for myself.
Hopefully someone else will chime in here to give more details.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Jun 2001 Posts: 169 'Bolter | | 'Bolter Joined: Jun 2001 Posts: 169 | Those alignment pins are threaded just like the other bolts. All of mine have just screwed out with a pair of vise-grips. Treat it just like any other bolt that may be rusty, lub, heat, etc.
Paul Wisner | | | | | Joined: Aug 2000 Posts: 587 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 587 | | | | | | Joined: Feb 2004 Posts: 29,875 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,875 | Any good machine shop with a seat & guide machine should be able to install bronze, or cast iron guides, your choice.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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#5305 02/25/2004 10:10 PM | Joined: Nov 2000 Posts: 582 Shop Shark | | Shop Shark Joined: Nov 2000 Posts: 582 | Got an 848 head on the floor in my office and can concur that they are indeed threaded cause one is missing. :rolleyes: | | |
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