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Engine basics => Engine set up tips => Topic started by: Bootlegger on December 07, 2015, 11:45:22 AM

Title: O S L A 46
Post by: Bootlegger on December 07, 2015, 11:45:22 AM

  What is the stock head shim thickness for this engine?  Thanks...
Title: Re: O S L A 46
Post by: Tim Wescott on December 07, 2015, 12:39:38 PM
Just perfect for a stunt run, AFAIK.
Title: Re: O S L A 46
Post by: Mark Scarborough on December 07, 2015, 12:50:36 PM
Just perfect for a stunt run, AFAIK.
while this is most decidedly true Tim,,
you should take care ,, soon you will be lumped into the same basket with me ( that being smart a$$) ,,
then next thing you know they will lump all us NW guys into that basket,,
and while its likely true to a great extent,, i would rather make them meet us to figure it out ( see attendance at the regionals jump until the figure out who we really are)

All that said,, I am a bit perplexed by this question,, if you are running an LA 46, take the head off and measure it?
if you are not running one, uh,, ??
I guess perhaps if you have one that you suspect has been modified this might be relevant ,,

I am not home, and like Tim, I have no undying need to pull the head off one of mine so sorry,, I cant help,,
but I thought Tim's comment warranted a witty reply,, sorry to clutter upyour thread,,
Title: Re: O S L A 46
Post by: Joe Yau on December 07, 2015, 01:35:04 PM
  What is the stock head shim thickness for this engine?  Thanks...

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCM65#tech
Title: Re: O S L A 46
Post by: Mark Scarborough on December 07, 2015, 01:51:19 PM
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCM65#tech
oh sure Joe,, take all the fun out of it with facts,, pfffttt  LL~
Title: Re: O S L A 46
Post by: Bootlegger on December 08, 2015, 07:32:21 AM

   Well, the reason for the question is the fact that all of the la 46 engines that I have the shims have been changed and I don't have any way of knowing what the stock one was.

  But I say thank you Joe, I 'ppreciate the answer...
Title: Re: O S L A 46
Post by: Chris Wilson on December 08, 2015, 04:27:41 PM
Begs the question as to why the shims were changed, and indeed what else was done along with it?

But the answer (minus the painfully circuitousness route) is 0.3mm.
Title: Re: O S L A 46
Post by: Tim Wescott on December 08, 2015, 04:40:18 PM
   Well, the reason for the question is the fact that all of the la 46 engines that I have the shims have been changed and I don't have any way of knowing what the stock one was.

Sorry for the smart-ass answer, then.  I thought you were fixin' to murder an engine or two.

If they're shimmed and you don't know their provenance then Chris has a good point -- you may want to inspect them for timing mods, or inquire of former owners.
Title: Re: O S L A 46
Post by: Mark Scarborough on December 08, 2015, 06:13:16 PM
Sorry for the smart-ass answer, then.  I thought you were fixin' to murder an engine or two.

If they're shimmed and you don't know their provenance then Chris has a good point -- you may want to inspect them for timing mods, or inquire of former owners.
its all your fault Tim,,
If YOU hadnt been a smarty pants, I would have kept my fingers off the keyboard LOL, so there
Title: Re: O S L A 46
Post by: Tim Wescott on December 08, 2015, 07:14:47 PM
its all your fault Tim,,
If YOU hadnt been a smarty pants, I would have kept my fingers off the keyboard LOL, so there

Yes, we all know that you're totally incapable of being a smart-ass unless someone prods you.
Title: Re: O S L A 46
Post by: Mark Scarborough on December 08, 2015, 07:18:46 PM
Yes, we all know that you're totally incapable of being a smart-ass unless someone prods you.
well yeah
Title: Re: O S L A 46
Post by: Brett Buck on December 08, 2015, 10:10:32 PM
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCM65#tech

  Unfortunately, that does not seem to be correct. I just measured two of mine, brand new out of the box, and they are 0.4mm/0.016". That's enough different from 0.013 as asserted in the link that it will probably make a small difference in the way it runs, but it's probably not critical.

     Brett
Title: Re: O S L A 46
Post by: Chris Wilson on December 09, 2015, 12:48:21 AM
Wonder if all the deck heights are going to be within that production tolerance Brett?
Title: Re: O S L A 46
Post by: Brett Buck on December 09, 2015, 01:04:34 AM
Wonder if all the deck heights are going to be within that production tolerance Brett?

 One would certainly hope so!

    Brett