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  #21  
Old 05-01-2010, 03:46 PM
solomon solomon is offline
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my mower shop is stupid, they told me "we haven't used lapping compound in years, we just cut the valve and seat" and i still needed to lap them to get my compression above 80
  #22  
Old 05-18-2010, 09:24 AM
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Hey Russ,

Will hot-tanking the blocks/heads after lapping screw up the work done? I don't know how "hot" the hot-tanking process is. Wouldn't want them to distort but I may as well lap them before I clean them.
  #23  
Old 05-18-2010, 03:41 PM
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Lapping is last thing to be done.
No exceptions.
Assemble immediately after lapping with everything at room ambient.
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  #24  
Old 05-19-2010, 07:38 AM
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Quote:
Originally Posted by Russ2251 View Post
Lapping is last thing to be done.
No exceptions.
Assemble immediately after lapping with everything at room ambient.
Thanks buddy. Appreciate the heads-up. Glad I asked.

Off-topic, but how's the kart running?
  #25  
Old 05-19-2010, 04:22 PM
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Quote:
Originally Posted by jr dragster Tyler View Post
Same thing one of my local mower shop told me, Except it was some rowdy french lady that worked at the counter that told me that, Apparently they just use sand paper? Like wtf?
Haha, i went to the shop today and talked to them about the valves again and they said "No solomon, you don't need compound, the cut makes a perfect seal" And i just gave up, they won't believe you need to lap them for the best seal.
  #26  
Old 05-19-2010, 04:28 PM
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Quote:
Originally Posted by solomon View Post
Haha, i went to the shop today and talked to them about the valves again and they said "No solomon, you don't need compound, the cut makes a perfect seal" And i just gave up, they won't believe you need to lap them for the best seal.
They sound retarded...

WAIT, is your name actually solomon? i've never heard that as a person name before, cool.
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  #27  
Old 05-19-2010, 05:52 PM
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Quote:
Originally Posted by solomon View Post
Haha, i went to the shop today and talked to them about the valves again and they said "No solomon, you don't need compound, the cut makes a perfect seal" And i just gave up, they won't believe you need to lap them for the best seal.
Id like to see the outcome of a compression test on an engine they've worked on
  #28  
Old 05-19-2010, 06:09 PM
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Originally Posted by Kaptain Krunch View Post
They sound retarded...

WAIT, is your name actually solomon? i've never heard that as a person name before, cool.
Yup its my actual name its different, thats for sure.

And I did have an 8hp engine they did a valve job on. It had 80 PSI and when i lapped the valves it went up to 120 PSI. Thats when i found out that lapping valves is one of the best things to do. I eliminate the decompression stroke or whatever its called on my valves by grinding the exhaust valve down a bit too. Makes starting the engine more fun
  #29  
Old 05-19-2010, 06:12 PM
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Wait, you mean the exhaust stroke? Whats the advantage of that? On a similar note, that little thingy on the back of the cam gear, is that the compression release?
  #30  
Old 05-19-2010, 07:26 PM
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IDK all i know is when pulling most engines over the exhaust valve stays open a little to make starting easier. The only advantage i know of is more Fun starting it. Makes your motor Look MEAN. Because you really feel all the compression.
  #31  
Old 05-19-2010, 07:38 PM
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Quote:
Originally Posted by solomon View Post
Haha, i went to the shop today and talked to them about the valves again and they said "No solomon, you don't need compound, the cut makes a perfect seal" And i just gave up, they won't believe you need to lap them for the best seal.
No disrespect to anybody, some folks just like working on small engines, but others do it because they either can't learn what they need to know to work on something other than a lawnmower or just don't care.
  #32  
Old 05-19-2010, 07:43 PM
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Originally Posted by gcarter95 View Post
No disrespect to anybody, some folks just like working on small engines, but others do it because they either can't learn what they need to know to work on something other than a lawnmower or just don't care.
I understand what your saying 100%, but they're doing something incorrectly to someone elses property!
  #33  
Old 05-19-2010, 07:49 PM
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Yes, but here's the difference....

Most of the people on here do this stuff because it is fun, something they enjoy. So they like to improve their skills and knowledge and reap the benefits.

Many people who work as professional mechanics, small engine or large, started in the field for the same reason.

But like every profession, there are those who only view what they do as a J.O.B. and only care about the paycheck. They sure don't care about how WELL they do the job, even less about the customer.

Sad fact of life.
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  #34  
Old 05-19-2010, 08:52 PM
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I agree 100%
  #35  
Old 05-19-2010, 10:54 PM
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Quote:
Off-topic, but how's the kart running?
Finer than frog hair.
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  #36  
Old 05-25-2010, 07:32 AM
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can you post piks?
  #37  
Old 05-25-2010, 07:54 AM
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Quote:
Originally Posted by gcarter95 View Post
Yes, but here's the difference....

Most of the people on here do this stuff because it is fun, something they enjoy. So they like to improve their skills and knowledge and reap the benefits.

Many people who work as professional mechanics, small engine or large, started in the field for the same reason.

But like every profession, there are those who only view what they do as a J.O.B. and only care about the paycheck. They sure don't care about how WELL they do the job, even less about the customer.

Sad fact of life.
You hit the nail on the head. You can apply that theory to almost any service-related field.

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Finer than frog hair.
Schweet!
  #38  
Old 05-25-2010, 08:14 AM
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Quote:
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can you post piks?
Who?
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  #39  
Old 05-29-2010, 02:29 PM
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Thoughts on this?

  #40  
Old 05-29-2010, 03:19 PM
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Might work if using gasket...I do not use gasket at all.
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