 Head question, Port size vs valve size |
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| VaccaRabite |
 Oct 24 2011, 08:12 AM
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En Garde!  Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region  |
In a recent thread I noted that the ports on my 1.7 turned 2056 heads are 47x37.5mm. I don't know what the valve size is.
Is the valve size usually the same size as the port, or smaller? The heads are installed and I don't want to remove them unless I need to, but the engine is about to come out for conversion to EFI. The engines PO had the headwork done and I don't have all his notes. If the valves are the same size as the ports I am going to pull the heads to have proper fitted valves for my engine. Would too large a valve size lead to higher head temps? The PO said when I bought the motor that it ran warm and I have noted this myself even after rebuilding the bottom end in 2009. Its manageable but I do have to take care climbing hills on the freeway. |
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Posts in this topic
Vacca Rabite Head question Oct 24 2011, 08:12 AM
HAM Inc Hi Zach, just got back to the computer and got you... Oct 24 2011, 08:31 AM jsayre914 Hey Zach,
Did you get your car back from Tony yet... Oct 24 2011, 12:53 PM Vacca Rabite Its in my garage.
I need to get the engine dropped... Oct 24 2011, 01:21 PM
jsayre914
I need to get the engine dropped.
Zach
You and... Oct 24 2011, 01:44 PM r_towle Not to make you roll your eyes....
BUT
47mm intak... Oct 24 2011, 01:40 PM Vacca Rabite
Not to make you roll your eyes....
BUT
47mm inta... Oct 24 2011, 05:21 PM McMark Take a picture and show us where you're measur... Oct 24 2011, 05:14 PM McMark
Nah, just one of those, checking the basics first... Oct 25 2011, 09:49 AM kg6dxn Theory...
n/a engine: ports should taper down fro... Oct 25 2011, 09:54 AM HAM Inc
True; til you get to the short turn radius and b... Oct 25 2011, 10:37 AM Jake Raby And....
Bigger is far from better. Finding "j... Oct 25 2011, 11:37 AM Vacca Rabite I finally pulled the heads off the motor yesterday... Jan 8 2012, 09:34 AM  |
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