Valve Lash Question: Blox Type C--Fresh Motor
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Valve Lash Question: Blox Type C--Fresh Motor
I have a couple questions.
If you adjusted valve lash on a fresh motor prior to cranking, and then broke motor in and rechecked the lash, is it possible for it to tighten? Lash for my Blox Type C was set to .007/.008 but I rechecked and now it's slightly too tight and I will have to re adjust to loosen it back up.
Another question I have: On the three cam holders, I know the arrows have to point toward the timing belt side, which mine are. When I went to recheck the valve lash I noticed that the holder to the left and the holder to the right got swapped. So the arrows still point toward belt side it's just they were swapped by accident/dumbassness. Is this ok? They look the same, I know the middle one is for sure different.
If you adjusted valve lash on a fresh motor prior to cranking, and then broke motor in and rechecked the lash, is it possible for it to tighten? Lash for my Blox Type C was set to .007/.008 but I rechecked and now it's slightly too tight and I will have to re adjust to loosen it back up.
Another question I have: On the three cam holders, I know the arrows have to point toward the timing belt side, which mine are. When I went to recheck the valve lash I noticed that the holder to the left and the holder to the right got swapped. So the arrows still point toward belt side it's just they were swapped by accident/dumbassness. Is this ok? They look the same, I know the middle one is for sure different.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
Rechecking lash, is common on new motors... I would run the lash @ 7 int / 9 exh, see how that works. I recommend checking the lash at every other oil change as well, its a good practice.
Each cap has a number on it and a arrow, put them in order of the cyl they point to.
Each cap has a number on it and a arrow, put them in order of the cyl they point to.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
Besides the middle cam holder (#3) which has the dowel and o-ring, is there an actual difference in the cam holder to the right and to the left of the middle one? Plans for tomorrow are to swap those back and redo the valve lash.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
I honestly dont think there is any visual difference, but i could be wrong, I've never criss crossed them like that, so i wouldn't know if it worked lol.. I would recommend putting them back in normal order reguardless..it'll take 5 mins to make sure its right.
Sounds like the lash was already too tight, make sure your adjusting on a cold motor..
Sounds like the lash was already too tight, make sure your adjusting on a cold motor..
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Re: Valve Lash Question: Blox Type C--Fresh Motor
Holy **** man, I got the cam caps off and took a closer look at the cam lobe and it's f*cked, there is visually less material at the peak of the lobe, something is WRONG. I will be posting pictures soon. I've already contacted Blox and they asked for pictures which I've already sent, they seem to be very interested in helping me determine the cause. There is no wear to my retainer or top of the valve, which I thought would have been mushroomed out after looking at how bad the cam lobe looked. The lobe with wear is on #4 cylinder and is the lobe just to the right of the VTEC lobe. The VTEC lobe seems to look fine (to me). This is crazy sh*t. The exhaust cam looks fine and the other lobes on the intake cam look fine....(to me)
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Re: Valve Lash Question: Blox Type C--Fresh Motor
You have already admitted that you assembled it wrong, with the cam cops in the wrong spots. That should eliminate any hope for a warranty. Deleting your incompetence would be a start to hope someone will cover your mistake.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
Well thanks for your input but I need real answers to the issue at hand. I did admit that the cam caps for #4 and #1 cylinder were swapped out, arrows still pointing toward the timing belt. As for warranty, I got these cams through another individual so being that I'm not the original purchaser....there is no warranty regardless. Also, if it were the cam cap that caused this, why is only one cam lobe worn out of all of them between the two cams? I never claimed to be an engine builder and I had help with all of this, at least I'm trying to learn.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
Since I did not do the valve adjustment, I am thinking one possibility could by that a valve was missed and the lash was too tight? I verified that oil was getting to all cam lobes. So I don't think there was an oiling issue.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
Holy **** man, I got the cam caps off and took a closer look at the cam lobe and it's f*cked, there is visually less material at the peak of the lobe, something is WRONG. I will be posting pictures soon. I've already contacted Blox and they asked for pictures which I've already sent, they seem to be very interested in helping me determine the cause. There is no wear to my retainer or top of the valve, which I thought would have been mushroomed out after looking at how bad the cam lobe looked. The lobe with wear is on #4 cylinder and is the lobe just to the right of the VTEC lobe. The VTEC lobe seems to look fine (to me). This is crazy sh*t. The exhaust cam looks fine and the other lobes on the intake cam look fine....(to me)
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Re: Valve Lash Question: Blox Type C--Fresh Motor
On the cam journal, you cannot feel any wear. I noticed it has "shiny" metal on part of it but unlike the lobe, you cannot feel any where. The lobe has actually wore down. Motor has 200 miles.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
You'll need to do the following;
New rocker arms
Line hone the cam caps to ensure proper straightness
A good set of cams.
I too, dont think swapping cam caps did this..could have been the lash actually being too tight and/or poor cam quality.
New rocker arms
Line hone the cam caps to ensure proper straightness
A good set of cams.
I too, dont think swapping cam caps did this..could have been the lash actually being too tight and/or poor cam quality.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
So are you guys saying to replace just the rocker arm from the bad cam lobe, all three in the picture or all of them in the head? I will take pictures later today of all the rockers arms. I was thinking that one rocker arm would need replacing but I thought the others would be o.k.
We did use assembly lube when cams were installed.
We did use assembly lube when cams were installed.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
If you look in the picture of the rocker arms I took, the one to the right obviously is crap, but the two on the left of it don't feel damaged. They are still slick, can't feel anything with your finger nail or anything like that.
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Re: Valve Lash Question: Blox Type C--Fresh Motor
This is probably a stupid question but would a machine shop have a way to micro-polish that rocker pad back to being smooth? It's not too terribly rough, not near like the cam lobe was.
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