High Rpm Power Loss After Switching Back To 1.6 Rockers

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sure it would have. it would have determined that your problem was due to improper preload which is exactly what you found out when you shimmed your 1.6. rockers. its a simple deductive test procedure.
How can you say this when SOOO MANY people said your wrong; multiple times about multiple suggestions?
 
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Dealing with the noise, and only the noise. How old are your lifters, and does the "sewing machine" get louder as the motor warms up?
Lifters are probably original, I never replaced them. They make a bit of noise right at startup then quiet down a bit. After its hot though? Im not sure, it may in fact get a little louder, but if so not by a huge amount.
 
How can you say this when SOOO MANY people said your wrong; multiple times about multiple suggestions?
lol, no they didn't. the op is the only one that said it would not determine his problem and he was wrong.

most people used to say the worlk was flat too, but only a few said ot was round.

just because others say someone is wring, it doesn't make it so.

you are simply showing you inexperience. i suggest you at least take a basic auto shop class.
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I have more likes than you. that makes all my advise more valuable than yours :whistle:
i can't answer that because i don't have sufficient information, however, it might simply be because they like the "pouty" lips in the photo.

i may not have gotten as many likes as i did if i had posted a photo of myself.
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Lifters are probably original, I never replaced them. They make a bit of noise right at startup then quiet down a bit. After its hot though? Im not sure, it may in fact get a little louder, but if so not by a huge amount.
varnished lifters can make noise. there are products that can reduce or eliminate the varnish in the lifters.

using thicker oil will can also reduce, and in some cases, eliminate lifter noise.

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i can't answer that because i don't have sufficient information, however, it might simply be because they like the "pouty" lips in the photo.

i may not have gotten as many likes as i did if i had posted a photo of myself.
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I went and "liked" all of your comments to further reinforce your belief that your advice/opinions are by far more superior and correct than other forum members that, as of today, have received fewer "likes" than you. Now remember the rules of "like" club, you must concede to those with a greater number of likes.

Now, proceed with arguing with yourself and let the jokes and ever too popular Stangnet Derailing begin.
 
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lol, no they didn't. the op is the only one that said it would not determine his problem and he was wrong.

most people used to say the worlk was flat too, but only a few said ot was round.

just because others say someone is wring, it doesn't make it so.

you are simply showing you inexperience. i suggest you at least take a basic auto shop class.
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I don't think you understand - If I went and put back the lifters 'the same as they were' like you suggested in your brilliant test, then yeah, I'd be going back to how they were that morning, when it ran fine, and revved. I already knew there was a problem with something I did, that's why I posted this, that's why in the thread title it says "After switching back to 1.6 rockers". What would be the point of that ??

I wanted to find out specifically what the cause could be - could it be a preload issue (which I already suspected), or could it be that I messed up a vacuum tube ? Or some 'trick' that I missed when setting up stamped rockers. Or just that the computer needs to learn the new flow characteristics with the 1.6 ( I know, far fetched)? Fact is, sure I could have put everything back to the way it was, when I knew it ran fine, that :poo: is obvious, goes without saying, and completely defeats the purpose of this thread. Like if I do that, for whatever reason, and now it works fine... OK ?? I already knew it would, but the whole point is I wanted to try something different, put some 1.6 rockers on, see how it affects the sound and the power. But I knew something wasn't right. That's why I posted here, not to get some obvious off-the-shelf answer. I knew I'd be going opening up the valve covers again, and I wanted to have ideas what to look for, to make sure I get it right, and not have to do it 2 more times, like you suggested. I wasn't wrong, I think you just completely missed the point.
 
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In short though , I apologize to everyone in this thread - basically this is just a result of me making a dumb assumption and a shortcut in thinking that since my Crane 1.7 roller rockers didn't need shims, neither would my stock 1.6 rockers. The fact is, the Crane 1.7 rockers sit a bit higher than the stock E7 rockers. And that makes sense now that I think about it, since they never came factory on the E7 heads, one shouldn't expect them to necessarily have the same height.
 
I don't think you understand - If I went and put back the lifters 'the same as they were' like you suggested in your brilliant test, then yeah, I'd be going back to how they were that morning, when it ran fine, and revved.
Actually I understand perfectly and it is actually you that doesn't understand so I will again gladly try to explain it to you.

If you put your Cranes back in, it might NOT have run perfectly. If it did not run perfectly then simple deductive reasoning and years of experience would strongly suggest that you had a NEW problem that was unrelated to the improper shimming of the rockers. The improper adjustment of the 1.6's might have caused some lifters to bottom out which might have caused damage to their internals or a wire might have gotten jarred loose etc.. I have seen lots of things like this.

To simply re-install the 1.7 rockers on the exhaust as a performance upgrade as one person suggested was not a suggestion to determine the cause of your problem like mine was and therefore was not helpful or practical. One must determine the cause of a prob then fix it before doing "performance" upgrades.

I have done this stuff a very, very long time and to explain in detail the purpose of each test I suggest would be helpful but very time consuming. For others [not referring to you here] that say my idea wouldn't help, proves their blatantly obvious inexperience and their desire to simply jump on the bandwagon [to be "popular"] which is heading to disaster because they are wrong, lol.

Now that you know what the prob was, in hindsight you can see that my suggestion certainly would have caused you one extra step, however, the point is that it still would have proved that your adjustment was incorrect and therefore would have been helpful to you.

"followers" are just that..."followers" and they allow others to do their "thinking" for them.
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Actually I understand perfectly and it is actually you that doesn't understand so I will again gladly try to explain it to you.

If you put your Cranes back in, it might NOT have run perfectly. If it did not run perfectly then simple deductive reasoning and years of experience would strongly suggest that you had a NEW problem that was unrelated to the improper shimming of the rockers. The improper adjustment of the 1.6's might have caused some lifters to bottom out which might have caused damage to their internals or a wire might have gotten jarred loose etc.. I have seen lots of things like this.

To simply re-install the 1.7 rockers on the exhaust as a performance upgrade as one person suggested was not a suggestion to determine the cause of your problem like mine was and therefore was not helpful or practical. One must determine the cause of a prob then fix it before doing "performance" upgrades.

I have done this stuff a very, very long time and to explain in detail the purpose of each test I suggest would be helpful but very time consuming. For others [not referring to you here] that say my idea wouldn't help, proves their blatantly obvious inexperience and their desire to simply jump on the bandwagon [to be "popular"] which is heading to disaster because they are wrong, lol.

Now that you know what the prob was, in hindsight you can see that my suggestion certainly would have caused you one extra step, however, the point is that it still would have proved that your adjustment was incorrect and therefore would have been helpful to you.

"followers" are just that..."followers" and they allow others to do their "thinking" for them.
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Ok, think about it logically for a second... You said putting back 1.7 rockers would determine the problem. I said it wouldn't. I started this thread to get ideas of what was wrong with the 1.6 rockers (knowing they likely had an issue, knowing the exact same setup with 1.7s didn't). So how exactly does putting the 1.7 rockers back on get me any closer to determining what the issue is with the 1.6s?
 
Ok, think about it logically for a second... You said putting back 1.7 rockers would determine the problem. I said it wouldn't. I started this thread to get ideas of what was wrong with the 1.6 rockers (knowing they likely had an issue, knowing the exact same setup with 1.7s didn't). So how exactly does putting the 1.7 rockers back on get me any closer to determining what the issue is with the 1.6s?
if you don't understand why after my explanation i can't help you. you made a post because you needed help with a problem. the problem was created because you did not know what you were doing. thats ok, not everyone knows a lot about engines.

if you had known what you were doing you would have set the lash properly in the first place.

it makes no sense for someone that doesn't know what they are doing to tell anyone else that they are wrong.

i don't make these mistakes because i know what i am doing and there is a logical reason for my suggestion as i explained previously.

people can post info or suggestions for you but they can't make you understand either the info or the purpose/reason for the suggestion.


PS - imo, you also seem to be avoiding the fact that someones suggestion to install the 1.7’s to increase your performance had NOTHING to do with your problem but I don’t see you beatin on him for his suggestion since the first thing you needed to do was fix your problem and he offered no suggestion for that as I remember, so why aren’t you beatin on him?
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That handsome guy in post 26 pointed that out as well. ;)
The handsome guy in post 26 offered reasonable possible causes of the noise created by the installation of the 1.7's which was certainly a helpful thing to address imo. The most likely far less handsome guy in the other posts was referring to the intermittent hesitation prob.
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Ok, think about it logically for a second... You said putting back 1.7 rockers would determine the problem. I said it wouldn't. I started this thread to get ideas of what was wrong with the 1.6 rockers (knowing they likely had an issue, knowing the exact same setup with 1.7s didn't). So how exactly does putting the 1.7 rockers back on get me any closer to determining what the issue is with the 1.6s?

@Dave2000GT
Give some credit to the guy for crying out loud, read post #6 and #28, @barnett468 was pretty close to what the problem was and you along with others just argued with him. Barnett468 gave us a good laugh with the "likes" and facebook comment though, lets not go there to win a debate in the future.

/QUOTE]

what is your valve lash/preload?

hello;

if it runs good on top end with no "miss", then it's reasonable to "guess" through simple logic/deduction. that the problem is caused by improper shimming of the 1.6 rockers.
 
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