 push rod tube seals |
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| ruddyboys |
 Jul 20 2004, 12:22 PM
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#1
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Hummel eigentümer  Group: Members Posts: 594 Joined: 3-March 04 From: Monroe, NY Member No.: 1,749 Region Association: North East States  |
My old pushrod tube "O" rings were very loose fitting on the head size (red) the block side were tight. Picked up a new set from the Bird and the fit the same, loose at the head end. When I tried to install them the ring would pull out and curl under the lip. Why? I have the old set, should I try the black ones on top too. '70 1.7 now 2056
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| Dave_Darling |
Jul 20 2004, 03:34 PM
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#2
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914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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QUOTE(Toast @ Jul 20 2004, 01:03 PM) I had push rod tubes in my 1776 VW engine. Different animals. The Type I pushrod tubes get sandwiched between the head and the case, which means you have to remove the cylinder head to replace the pushrod tube seals. (Or use one of the collapsible tubes, like they do on 911s.) The ends of the Type I tubes are "accordioned" to provide some pressure to keep the tube ends against the head and case when the engine expands. The Type IV engine has tubes that simply slide through the head and into the case bores. They do not have any "accordion" section, and don't need to expand with heat. That's why we have O-rings that slide along their bores, to allow for that expansion. --DD |
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Posts in this topic
ruddyboys push rod tube seals Jul 20 2004, 12:22 PM
Cap'n Krusty I you have early pushrod tubes and later heads, th... Jul 20 2004, 02:15 PM Jake Raby yep, capn is right. The early 1.7 had 1mm smaller ... Jul 20 2004, 03:02 PM Toast If you have alunimum push rod tubes, they are prob... Jul 20 2004, 03:03 PM ruddyboys What is a good Teflon sealant, does it come in a t... Jul 20 2004, 03:07 PM
newdeal2 Speaking of the seals and Pelican... I just got on... Jul 20 2004, 05:18 PM |
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