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  #106 (permalink)  
Old 09-23-2008, 01:41 PM
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I use Kendal brand 10 20 or 30 weight in pro motors, to break them in on the "machine"..

Would not hurt to just keep same grade rate in regular engine with frequent filter/oil changes.

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  #107 (permalink)  
Old 09-23-2008, 02:38 PM
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Decisions decisions..... I'm gonna sleep on it and think hard of how I wanna approach this situation.

Man I would forever be in debt if a local member could come lend a hand. I haven't ran into many folks from the Dallas area on here. If one did surface you bet I would have some ice cold "roadpops" on hand as Jim put it.... In the meantime, i'm gonna check the compression on the remaining cylinders and make a few phone calls to some local shops. I'm also gonna give a shout to my buddies over at Sachse Rod Shop and see if they might be able to help...

How much should I expect to dish out for any extensive type of machine work if that worst case scenario were to happen? ie : piston rings, valve train work etc..... I'll be sure to break the news to my wife over dinner and a nice pair of shoes
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  #108 (permalink)  
Old 09-23-2008, 04:06 PM
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Just remember on the compression, it is most important for the cylinders to be within 10 percent of each other. The actual number being low or high compared to "normal" could be as simple as an inaccurate gauge.
I also think as someone else stated this has gotten a little off track. You know you have a baffle issue and we all know it can cause what you are seeing. The compression test is a good idea, but if it shows nothing conclusive. Fix the baffle issue as it is a known issue. Worst case get a set of stock GM covers and see if the issue goes away. Dont dig in any further until you have eliminated the known issue.


Chet
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  #109 (permalink)  
Old 09-23-2008, 04:13 PM
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Don't forget to put a little oil in each cylinder, and do a second compression test. This will tell you if you have a ring problem or not.
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  #110 (permalink)  
Old 09-23-2008, 04:48 PM
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It is no big deal to tear it down completely and rehone the block 100-150 then install new rings, bearings, gaskets...

Save the "shoe trick" for when you put a rod through the side of the block...
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  #111 (permalink)  
Old 09-23-2008, 07:37 PM
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check your pvc also looks lke you have hydros i had them on one of my cars and i had blow by what was happening i was riding at weird angles and my pvc was getting stuck shut take your pvc out then go for ride with the car at stock level plus make sure you never start the car when the back end is down and front is up all your oil is away from the oil pump i found that out the hard way.
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  #112 (permalink)  
Old 09-23-2008, 07:46 PM
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Quote:
Originally Posted by T-bucket23
Fix the baffle issue as it is a known issue. Worst case get a set of stock GM covers and see if the issue goes away. Dont dig in any further until you have eliminated the known issue.

Chet

Very good advice..........again!!!

Don't make your life miserable unless you absolutely have to!
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  #113 (permalink)  
Old 09-23-2008, 08:12 PM
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Quote:
Originally Posted by OHD
It is no big deal to tear it down completely and rehone the block 100-150 then install new rings, bearings, gaskets...

Save the "shoe trick" for when you put a rod through the side of the block...
What do you meen "no big deal to..."? It may be "easy" for you and I, along with many members on this 'forum', but to someone who admits, and I quote Sin7, " somewhat mechanically inclined, and up for the challenge", this could have 'catastrophic' results. Aren't we all trying to help him 'fix' his problem? This could cause, 'moving expenses', child support payments, and on, and on and on. Catch my drift?

I suggest starting with the 'simple' well known "baffle", and a 'wet compression test', to see if it actually has a ring problem, or if it almost fixes it's self from the baffle.

I also have other questions on the 'build', after seeing the picture of the exhaust valve in #2 cylinder. 1. stock guide? 2. replacement cast iron guide? 3. replacement bronze guide? 4. stock guide, knurled & reamed?

My vote is for #4, since it was, and I quote Sin7 again "an older machinist, and purchased from his garage at his house". When I first started working on cars this was the 'normal' thing to do.

By the way, what does "shoe trick" meen? I've have never 'heard' that one before.
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  #114 (permalink)  
Old 09-23-2008, 08:14 PM
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Sin7

Food for thought.....

Which seals do you want to use?

Yes the blue one is a positive seal the yellow one is an umbrella seal. They work differently. The positive seal requires the upper guide be machined to fit it. It clamps rather tightly and the portion that rides against the stem actually wipes the oil off. They are particularly good on the intake where the manifold vacuum is always trying to draw oil down the stem, which can lead to too much oil passing the stem and getting into the intake at the valve.

The umbrella seal isn't really a seal, it catches the oil flying off the valve train parts and diverts it away from the stem and guide area to reduce the opportunity for oil to be drawn down the stem and guide. The umbrella seal works better on the exhaust as there is pressure always trying to push oil out of the guide, since it admits more oil, it provides a greater quantity to the guide.

The O ring that GM uses is to stop oil draining off the retainer and locks from running down the stem into the guide, it is probably the least effective, but works pretty well when the stem to guide clearance is new and not so well as these parts age and wear.

Given all my druthers, I prefer to use a positive seal combined with bronze alloy guides as the bronze requires a lot less lubrication than cast iron against a hard chrome stem. But this is a personal preference not a 'have-to' because somebody says that's the way it is.

Bogie
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Here's a post on v/c baffles:

High oil consumption with aftermarket valve covers

The above is definitely worth the read!

....and Bogie again shows you how in this post:

positive seals valve steam

Or you could look at the tips in this one:

1/2 smokin' 290 HP crate motor

There's a wealth of information contained in the search button at the top of the page, try it.
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  #115 (permalink)  
Old 09-23-2008, 08:47 PM
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"Shoe Trick" is when wifey poo comes home with the new pair of 40 dollar kicks that cost 1450..

A pair of shoes and handbag can and many times does cost many more than some of the total engine budgets posted here....Think Prada, Coach, etc.....

If a person is going to leave over an engine rebuild they are better off geting it over with now, anyway....
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  #116 (permalink)  
Old 09-23-2008, 08:49 PM
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Quote:
Originally Posted by carsavvycook
What do you meen "no big deal to..."? It may be "easy" for you and I, along with many members on this 'forum', but to someone who admits, and I quote Sin7, " somewhat mechanically inclined, and up for the challenge", this could have 'catastrophic' results. Aren't we all trying to help him 'fix' his problem? This could cause, 'moving expenses', child support payments, and on, and on and on. Catch my drift?

I suggest starting with the 'simple' well known "baffle", and a 'wet compression test', to see if it actually has a ring problem, or if it almost fixes it's self from the baffle.

I also have other questions on the 'build', after seeing the picture of the exhaust valve in #2 cylinder. 1. stock guide? 2. replacement cast iron guide? 3. replacement bronze guide? 4. stock guide, knurled & reamed?

My vote is for #4, since it was, and I quote Sin7 again "an older machinist, and purchased from his garage at his house". When I first started working on cars this was the 'normal' thing to do.

By the way, what does "shoe trick" meen? I've have never 'heard' that one before.

I agree totally.

I have always believed that if I was given advice for a given problem, and the advise was from knowledgeable people with different points of view, I considered each set of solutions with my capabilities, resources and expectations in mind.

Sin7 seems like he wants to learn not only why his machinery is doing these unpleasant things, but he also want to learn how the discovery process works for himself through experience....We all got here because we are curious, and motivated to take the time to learn for ourselves.


If it was me, I'd just put a drool bucket under the exhaust pipe to catch the raw oil as it spewed out, then pour it back in the motor every so often, and run the thing till it wouldn't move.....J/K


What is the shoe trick?


Later, mikey
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  #117 (permalink)  
Old 09-23-2008, 09:11 PM
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Quote:
Originally Posted by OHD
"Shoe Trick" is when wifey poo comes home with the new pair of 40 dollar kicks that cost 1450..

A pair of shoes and handbag can and many times does cost many more than some of the total engine budgets posted here....Think Prada, Coach, etc.....

If a person is going to leave over an engine rebuild they are better off geting it over with now, anyway....
Thank you for that summation.

I don't feel, and I know from 'experience', the two don't mix. LOL Generally a person will 'not just leave', over something like this, it's just like 'kicking it into the next gear' (with new shoes).LOL
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  #118 (permalink)  
Old 09-23-2008, 09:21 PM
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I know that was off track on this thread. I am sorry I could not resist.



I am ready to restart advising Sin7 now. I got over that diversion.

Last edited by carsavvycook; 09-23-2008 at 09:25 PM. Reason: Back to 'advising'
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  #119 (permalink)  
Old 09-23-2008, 09:33 PM
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blowby??????

I noticed you said you just hooked up the vacuum line to the transmission. Have you checked the oil in the trans yet, a bad modulator will allow oil into the intake also.
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  #120 (permalink)  
Old 09-23-2008, 09:36 PM
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Quote:
Originally Posted by powerrodsmike
I agree totally.

I have always believed that if I was given advice for a given problem, and the advise was from knowledgeable people with different points of view, I considered each set of solutions with my capabilities, resources and expectations in mind.

Sin7 seems like he wants to learn not only why his machinery is doing these unpleasant things, but he also want to learn how the discovery process works for himself through experience....We all got here because we are curious, and motivated to take the time to learn for ourselves.


If it was me, I'd just put a drool bucket under the exhaust pipe to catch the raw oil as it spewed out, then pour it back in the motor every so often, and run the thing till it wouldn't move.....J/K


What is the shoe trick?


Later, mikey
They say, "That you have to learn something every day". I did today, but that will be a response to another thread someday.

Who said "You cannot teach an old dog new tricks".
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