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Jeep Wrangler YJ
YJ General Discussion
Advice on Compression Test Results
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<blockquote data-quote="jeepjoe43" data-source="post: 429926" data-attributes="member: 19255"><p>Well if it's a cracked valve, it could blowtorch out a pizza slice from the valve and damage the seat, or even the head.</p><p>Did that myself on the fore-mentioned 4 banger and it cost me a ported head.</p><p>But I was pushing it Really hard on a road trip back from CA. LA traffic had become "Fight or Flight".</p><p>I chose "Flight" and the speedo in my Pinto was pointing straight down (about 130mph) 'til I burnt the valve in Indio. </p><p>I Don't ordinarily drive like that!</p><p></p><p>But it's not as simple a just fixing a valve, if you gotta pull the head it should have a complete valve job by a competent machine shop.</p><p>You might be able to just hand lap the valve if it isn't cracked, but you'll be doing the job again sooner than you would like.</p><p>I have a shop do valves, and I'm an experienced mechanic.</p><p>They have the special grinding tools for dressing the valves & seats and installing guides if needed.</p><p>And from the mileage on your's, it might need those too.</p></blockquote><p></p>
[QUOTE="jeepjoe43, post: 429926, member: 19255"] Well if it's a cracked valve, it could blowtorch out a pizza slice from the valve and damage the seat, or even the head. Did that myself on the fore-mentioned 4 banger and it cost me a ported head. But I was pushing it Really hard on a road trip back from CA. LA traffic had become "Fight or Flight". I chose "Flight" and the speedo in my Pinto was pointing straight down (about 130mph) 'til I burnt the valve in Indio. I Don't ordinarily drive like that! But it's not as simple a just fixing a valve, if you gotta pull the head it should have a complete valve job by a competent machine shop. You might be able to just hand lap the valve if it isn't cracked, but you'll be doing the job again sooner than you would like. I have a shop do valves, and I'm an experienced mechanic. They have the special grinding tools for dressing the valves & seats and installing guides if needed. And from the mileage on your's, it might need those too. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Advice on Compression Test Results
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