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Post by Dustin on Oct 16, 2008 17:49:17 GMT -5
I did them on Carlos's '68 Buggy and they are not leaking. What were the quality of the ones you put in?
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Chris
1500sp
Posts: 330
Joined: Jun 24, 2008 20:48:27 GMT -5
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Post by Chris on Oct 16, 2008 19:07:38 GMT -5
Mid America quality...It seems like the more I drive it the less they leak, maybe my car is telling me something  |
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Post by Dustin on Oct 16, 2008 20:42:46 GMT -5
haha maybe, I would not trust Mid America parts. I bought CIP German from George for Carlos's Buggy.
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Chris
1500sp
Posts: 330
Joined: Jun 24, 2008 20:48:27 GMT -5
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Post by Chris on Oct 16, 2008 21:03:54 GMT -5
I see, I see. Well we should probly let bren have his thread back  |
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Post by bren on Oct 16, 2008 21:17:57 GMT -5
OK, I will take it back for a minute.
Got word from Greg today. It is not as bad as we feared! ;D
The crank and flywheel are ruined as mentioned previously. Those are the only ruined parts. Everything else is useable. Seems the flywheel was never tightened properly allowing this failure.
Greg also found that the #4 piston was put in backwards/upsidedown. He said that explains why the motor was getting hot. Not sure I understand why that would cause excess heat but I believe him. I will ask for a better explanation later. Motor shows no signs of ever actually being overheated so that is good.
Only other issue was the quality of the cam. It appears to be a reground stock cam that was ground to a 110 configuration. He did not feel like he could trust it so I will be replacing the cam and gear. With the bigger cam he recommended high rev springs for the valves. Said that would be a better balance with the cam.
So, all in all not as bad as expected at all. Greg and George feel the motor should now run much better and stronger. I certianly hope so. I always wondered if the motor should have been stronger. Now I will finally know.
So, bottom line, Greg is rebuilding the motor now.
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Post by ghiastein on Oct 16, 2008 21:30:46 GMT -5
Bren the reason why having a upside down piston is bad is because the wrist pin hole is not actually drilled on center line of the piston. Its just a touch off. The reason for this is to give more leverage during the combustion stroke to help turn the crank. Also if you notice the rods also need to be installed also in one direction.
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Post by Dustin on Oct 16, 2008 21:37:57 GMT -5
Thats good news them Bren, Thats scary about the piston. How could someone miss that? I hope that motor starts running better for you after this!
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Post by bren on Oct 16, 2008 21:48:03 GMT -5
Greg also mentioned something about looking at one more thing on the case. I did not really understand to be honest. I just hope he does not call saying it is bad. So far he thought it should be OK.
AJ, I understand what you are saying about the piston. Still don't understand why that would cause the engine to get hot. I imagine the original builder missed it as he was doing the rebuild for the second time. Was frustrated to say the least. Honest mistake I imagine. However, I agree it should have never happened.
I too hope it runs better. I guess this is a good thing that all this happened. Now I will finally get the motor I thought I paid for back in 2005!
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Post by Dustin on Oct 16, 2008 21:51:04 GMT -5
The piston backwards would cause excessive heat from it having to push harder to get up the cylinder. Luckily it did not score the piston or cylinder walls.
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Post by bren on Oct 16, 2008 21:55:35 GMT -5
OK, that makes sense. I am really fortunate I did not have all kinds of more damage.
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VDub63 ( Steven )
1600dp
Club Photog
63 Beetle, 63 Beetle #2 project, 62 Beetle project
Posts: 2,108
Joined: Jul 5, 2008 14:14:20 GMT -5
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Post by VDub63 ( Steven ) on Oct 17, 2008 9:57:10 GMT -5
So does this mean you will be able to have a better quarter mile time? And beat dad more going down the track  |
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Ruffuss
1600dp
Posts: 2,795
Joined: Jun 25, 2008 19:13:16 GMT -5
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Post by Ruffuss on Oct 17, 2008 10:14:30 GMT -5
I guess we'll have to do something about that. Spring is a long time from now. Later Kenn
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Post by ghiastein on Oct 17, 2008 10:21:11 GMT -5
I have a crank for sale to make a stroker engine. longer stroke = more horsepower.
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clintonddk
1600dp
Posts: 755
Joined: Oct 7, 2008 18:16:45 GMT -5
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Post by clintonddk on Oct 17, 2008 12:49:06 GMT -5
The piston backwards would cause excessive heat from it having to push harder to get up the cylinder. Luckily it did not score the piston or cylinder walls. I was always told that the old guys back in the day would run the pistons upside down to make more power due to them running freer. The only down fall to this was the engine would be more noisier and sounded like it was going to come apart. So I to do not understand why it would run hotter. |
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clintonddk
1600dp
Posts: 755
Joined: Oct 7, 2008 18:16:45 GMT -5
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Post by clintonddk on Oct 17, 2008 12:53:47 GMT -5
I'm confused. Did the fly wheel come loose or the large pulley turning your generator (the one mounted to the crank)? The flywheel nut is put on with a ton of torque (250#). There is a bearing inside the gland nut that is supposed to be greased. I suppose if that became dry and froze up the tranny shaft could bind up on it and start it to turn loose though that doesn't seem very plausible. I don't know if the tranny shaft turns in the direction required to loosen that nut. Mike If the flywheel run out was over specs (wobblely) it would cause a vibration also make the crank pound back in fourth loosening the gland nut and pulley nut. This sound a lot like what happened. |
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