VWDiesel.net The IDI, TDI, and mTDI source.
Engine Specific Info and Questions => IDI Engine => Topic started by: jaysen71581 on March 11, 2012, 09:26:32 am
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Hey all just finished up making my injector for my compression test and i have my results
195-240-220-200
Think i found my pressurized crankcase problem dont you???
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What is this schrader valve you speak of? I looked for DIY compression injectors but found none
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Think of a tire and valvestem. When you put air in the valve lets the air go one way and not come out till you push that little stem down. Same thing on a compression tester. It keeps the first stroke of air you put in in the line and gauge so you are not always pushing it back in. If I can get my tester out I will picture it and slap it in here later.
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It does have a schrader valve in it
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Reasonably clustered values, so no weird stuff.
Head off, photograph head face and piston faces.
Inspect top of bores for wear groove.
Sump off pistons out, photograph pistons sides, capturing ring gap positions, and any stuck in.
Gently remove rings of worst and best chamber, and put them in the bore.
Measure/photograph gaps.
Have new rings to hand. See if a new ring will meet gap spec etc etc
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Its not, i compared it to a snap on injector and i like mine better lol... when i get the $$ im going to be pulling the motor for a proper rebuild or i may just buy a running and True TD motor and just drop it in...
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Is someone pulling threads apart again by commenting, and then removing?
It is entirely possible, but it is not Lucas or I as moderators. Unfortunately people are allowed to delete there own comments and threads do get confusing. Name calling is not the way to go about it though my friends.
If you do as I mentioned it may be that a rering and hone by any method you choose, will be sufficient. Without hunting, can you remind me what other issues you have other than seeming lt high sump pressure?
I think that idle blowby is often greater than operating speed blowby due to the time element, so things may not be as bad as it appears.
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Erasing comments is within the rules of this forum. That type of comment was not. Check yourself there fella.
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Both comments were modified by me, to remove the name calling. On topic gentleman.
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Erasing comments is within the rules of this forum. That type of comment was not. Check yourself there fella.
I clearly missed some intervening comments that passed on through the night hours :o,
I only recalled your comment about the valve which was completely innocuous. Can't you see how it messes up the threads and makes people look like they are talking to themselves? I also thought you stated in another part of the forum that you have only come back to sell in the vendors section, so I guess you have changed your mind. Welcome back if that is the case, or goodby if not ???
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Erasing comments is within the rules of this forum. That type of comment was not. Check yourself there fella.
I clearly missed some intervening comments that passed on through the night hours
No, there weren't any other comments that you missed. Please leave the name-calling and insults out of your future posts, Mark. If you want to avoid any discontinuity in the thread in the event that I delete one of my posts, then it would be most effective to not reply to my posts. As long as the option is open to me I will continue to edit/delete my own posts when the mood strikes and for whatever reason I feel fit and how you feel about that is no concern of mine. Similarly, where or when I post really is no concern of yours. Thanks for the welcome/goodbye.
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Erasing comments is within the rules of this forum. That type of comment was not. Check yourself there fella.
I clearly missed some intervening comments that passed on through the night hours
No, there weren't any other comments that you missed. Please leave the name-calling and insults out of your future posts, Mark. If you want to avoid any discontinuity in the thread in the event that I delete one of my posts, then it would be most effective to not reply to my posts. As long as the option is open to me I will continue to edit/delete my own posts when the mood strikes and for whatever reason I feel fit and how you feel about that is no concern of mine. Similarly, where or when I post really is no concern of yours. Thanks for the welcome/goodbye.
You're welcome.
I was actually replying to jay's comment at the time!?
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Erasing comments is within the rules of this forum. That type of comment was not. Check yourself there fella.
I clearly missed some intervening comments that passed on through the night hours
No, there weren't any other comments that you missed. Please leave the name-calling and insults out of your future posts, Mark. If you want to avoid any discontinuity in the thread in the event that I delete one of my posts, then it would be most effective to not reply to my posts. As long as the option is open to me I will continue to edit/delete my own posts when the mood strikes and for whatever reason I feel fit and how you feel about that is no concern of mine. Similarly, where or when I post really is no concern of yours. Thanks for the welcome/goodbye.
You're welcome.
I was actually replying to jay's comment at the time!?
But you quoted his. I think this type of bickering to get a rise out of someone is not in the best interest of the forum. Have a nice vacation Mark, see you in a week.
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Is someone pulling threads apart again by commenting, and then removing?
Erasing comments is within the rules of this forum. That type of comment was not. Check yourself there fella.
I clearly missed some intervening comments that passed on through the night hours :o,
I only recalled your comment about the valve which was completely innocuous. Can't you see how it messes up the threads and makes people look like they are talking to themselves? I also thought you stated in another part of the forum that you have only come back to sell in the vendors section, so I guess you have changed your mind. Welcome back if that is the case, or goodby if not ???
Those posts (and the bits deleted by mods) were directed at Jay? Jay is "CADman" and "He Who Must Not Be Named" and "Eraser", etc... That just doesn't make any sense to me.
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Letting people delete postings does a great disservice to this board. Many threads are just about worthless because of the discontinuity. People disagree and no amount of self serving editing will change that. It also allows people to hide what may be useful information as well as mis-statements. This forum would be much better served if no posts could be edited after 12 hours, like every other board that I have ever been on. The current practice allows someone to make and absolutely incorrect post and when called on it edit his previous posts to make the people who had it right look like the lame ones. I have seen this several times on this board.
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I will let this comment stand as it is opinion and not abrasive in nature. This would be how one can express opinion and not be banned for rude/inappropriate comments.
I completely disagree. If I put the info up, correct/incorrect, it doesn't matter to me as it is mine to do with as I see fit.
That said, we should get back on topic, as what I have been doing is probably more distracting than deleting stuff.
To the OP, I think you are on the right track to your low compression. A rebuild maybe in order.
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W/o the check valve in your adapter all of you readings will be lower than the real value. Also, the motor needs to be at operating temp and you need a strong battery and if possible a substantial charger on the battery between cylinders. Small differences in cranking speed + large differences in compression.
That being said, the differences high to low are troubling. Not the number of psi differenc, but as a percentage. Do a proper compression test and then you can be sure you aren't rebuilding a motor that does not really need it.
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Letting people delete postings does a great disservice to this board. Many threads are just about worthless because of the discontinuity. People disagree and no amount of self serving editing will change that. It also allows people to hide what may be useful information as well as mis-statements. This forum would be much better served if no posts could be edited after 12 hours, like every other board that I have ever been on. The current practice allows someone to make and absolutely incorrect post and when called on it edit his previous posts to make the people who had it right look like the lame ones. I have seen this several times on this board.
Agreed 100%. I am surprised that it was and still is allowed. Most forums have safeguards against that, e.g. editing privilege expires after a short period of time. I am surprised that person was allowed back on this forum after the damage he caused.
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I will work to limit my posts to those that do not contain any helpful information (especially with regards to any technical questions asked specifically by you) so that if I happen to edit or remove them in the future, the "damage" will be minimized.
Libbyd, I nearly spit my mouthful of lunch on the screen laughing as I got as far as the first part of this, before the ( parens) and thought, Gee all his post from now on will lack any tidbits of information. Then I read further. Maybe any posts to 92Eco?
I kind of think like you in that if my post was off base then I should be removing it so as not to confuse others with the wrong information. But is does sort of mix things up if others have countered your arguement and now those initial words are no where to be found. Maybe just a retraction in the thread as it develops rather than pulling the plug at the base and turning the lights off.
Just a suggestion. Now to clean the screen.
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this forum is really beginning to get the drama-pit feeling of the vortex..
we really need to just take a chill pill guys.. or **EDIT**whatever tickles your fancy for that matter..
were not in high school anymore guys.. dont act like were still in high school.
and further more, this is the internet.. you really need a fairly thick skin to deal with what people say on the internet.. or just not give a siht about what people think..
ZOMG! he said something mean to me on the internet! im going to go cry about it now!
doesnt that sound mature guys?
(BTW Andrew, none of this was directed AT/TOWARDS you, it was just a general statement to all users of the board)
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Good you qualified your statement R.O.R. I would hate, no just not like to think that one person gets to have it all. The **EDIT**and the chill pill combo. You writing a prescription like that for us to pick up at the Wallys window of drive by drugs?
I would say wear the thick skin suit but not your other remedy. We should generally give a shat about what we say. Or write, or do for the most part in life.
Does the drama pit have a counter clockwise vortex attached to it?
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Guys, we really should leave the drug references out and get back on topic. I have no problem with what you all have posted *except stated* people have a right to their opinion even if it is wrong ;D
Back to topic and people do need to stop trying to get peoples pistons to swell. I banned Mark, for a week, for his actions in this thread and others, if it continues I may have to lock the thread.
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So jaysen, did you retest the cylinders and come up with a different set of numbers? Are you just re-ringing it?
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I think all you guys are tough mean badaxx mofo's who could clean the house on both sides of Brooklyn.
Takes a man to drive an old crapbox VW Diesel 20-30 years old.
And a genius.
I'd rather talk about Jaysen's Comp Numbers being the lowest i have ever seen or read about - from a running VW Dzl engine.
Try another tool/tester on it with the engine cold and hot.
Might get better data to work with.
I drove a car with 250'ish across the board and it pushed out like a geyser when you took off valve cover cap while running warmed up. Not quite like a hot radiator cap - but in general - similar.
Even changed sound of engine.
Is yours that bad or worse ?
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But then again if someone were to write an incorrect post and be called out on it and then edit it, and afterwards delete it only to replace the lost and damaging post with a new post that is correct and helpful, but then edit this post to make it no longer helpful and someone else could look smart for correcting the new post before it was edited when actually they were wrong. Someone could get confused and take the wrong information as correct here it stands at the vanguard of the deep fried dada movement that's where you live, that's your address ::)
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TrevOrbr, you have been sniffing to much blow by from this engine that is so low on compression it looks like a gasser.
So are you sure of the psi jaysen? Did you try doing the test then throw a couple of squirts of heavy oil in the top of the cylinders to see if it jumps up the numbers and by how much. I have heard that is one method for determining poor sealing rings.
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The oil trick definately works, but I have been told to avoid it as oil is a fuel for diesels and could ignite in your gauge. It should always raise it a little as there is more than air to compress, but if it raises it 75 points or something more then usually it is a sign of rings.
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OR you could avoid all of the variables and just leak the motor down. Then you would KNOW. Cheap and easy, if not quite so quick.
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195-240-220-200
Switch to gas, You'll be fine :P
As to the other topic, if you are going to call someone out for being a wrong or an idiot or whatever...quote the offending post.
Problem solved and no amount of editing on their part will ever make it go away.
Or use the ignore list.
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195-240-220-200
Switch to gas, You'll be fine :P
As to the other topic, if you are going to call someone out for being a wrong or an idiot or whatever...quote the offending post.
Problem solved and no amount of editing on their part will ever make it go away.
Or use the ignore list.
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good idea!
as for the op, I wonder if his low compression numbers could be due to the way he made his adapter, lowering his compression ratio.
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I'm not sure what "damage" you feel is done by posting and then deleting as opposed to not posting in the first place. If the information posted is helpful, then it would seem to me to be a short-term benefit to those that get to read and understand the helpful information. If the information posted is not helpful, then removing it would seem to be beneficial. Regardless, in order to accommodate you 92ECO, I will work to limit my posts to those that do not contain any helpful information (especially with regards to any technical questions asked specifically by you) so that if I happen to edit or remove them in the future, the "damage" will be minimized.
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195-240-220-200
Switch to gas, You'll be fine :P
As to the other topic, if you are going to call someone out for being a wrong or an idiot or whatever...quote the offending post.
Problem solved and no amount of editing on their part will ever make it go away.
Or use the ignore list.
my 375k mi high compression gasser had similar compression numbers..
i think its time to take the diesel head off, and swap it out for a gasser head.
back in the day, they used to take diesel blocks, and put gas heads on them, and run a BIG spray of juice to them because of the TOUGH diesel pistons..