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Old 12-16-2010, 03:30 PM   #16
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okay,so whats an mg66x look like? what were the big changes?
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Old 12-16-2010, 04:31 PM   #17
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not much, the head is drilled to cut weight, it was a birth day present you may say as the new head started at its first year anniversary of its release, all internals etc are still the same.
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Old 12-16-2010, 05:53 PM   #18
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Originally Posted by mtbkym01 View Post
Got 2 of these bad boys (MG66X) and 2072's sitting waiting for break-in next year, moving interstate, so I thought I'd wait, and break them in when I've relocated.......Cant wait to run them
Welcome aboard - you wonīt be disapointed with the MGīs
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Old 12-16-2010, 05:55 PM   #19
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okay,so whats an mg66x look like? what were the big changes?
X = cross drilled head I believe Matt. Like Flanno says, nothing else has changed internally. If it ainīt broke - donīt fix it
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Old 12-16-2010, 06:56 PM   #20
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X = cross drilled head I believe Matt. Like Flanno says, nothing else has changed internally. If it ainīt broke - donīt fix it
That's the truth,I have a mg66 and go 2072 pipe all brand new in the for sale section. I was asked why I was selling? Got 3 mg's,3pipes and 5 more go engines and 5 more pipes. My gxr 3port is going to racer22 for a mod.So I will use the mg and my 3 ports most of the time. Maybe throw a 7 port that I ported into the buggy every once in a while. But the mg last's along timmmmmmmeeeeeeeeeee!!!!!!!!!!!! 7 gallons so far only replaced rod and one osp3 glow plug.
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Old 12-16-2010, 10:23 PM   #21
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Wow !! that's a great run. Must be all that Big Matt TLC
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Old 12-16-2010, 10:58 PM   #22
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Wow !! that's a great run. Must be all that Big Matt TLC
that and I use the massive mods run in oil for the first 2 tanks. and heat it up for at least the first gallon. I was a little apprehensive about the run in oil. but the first go I ever ran in I did not use and it went down hill 5 gallons. So it works. that and all the info about break in with these engines. It's my opinion you need to develop a lot of patients at break in. also learning head shimming and needle settings helps.
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Old 12-21-2010, 08:56 AM   #23
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Default MG 66 Piston & Sleeve

Anyone know where i can get a piston & sleeve in the U.S. they are not in stock at answer rc
Thanks
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Old 12-21-2010, 12:08 PM   #24
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Anyone know where i can get a piston & sleeve in the U.S. they are not in stock at answer rc
Thanks
If your trying to piece it into a gxr case you will need the crank also. Actually if you have a gxr engine buy the mg-66 crank and put it in,you will notice a difference. I'm not 100% pos. that the mg sleeve set will work in a gxr case. I thought I read where they would. I am sure some one with more experience will help here. Also on ebay there is a used one[whole engine for 125.00] it's from mike the owner of answer usa and my sponsor. So I would imagine he's not posting crap. Hell ask him if it comes with the extra's as you will need to do the rod and I would do a rear bearing at least. seal it up and drive it.
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Old 12-21-2010, 01:54 PM   #25
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If your trying to piece it into a gxr case you will need the crank also. Actually if you have a gxr engine buy the mg-66 crank and put it in,you will notice a difference. I'm not 100% pos. that the mg sleeve set will work in a gxr case. I thought I read where they would. I am sure some one with more experience will help here. Also on ebay there is a used one[whole engine for 125.00] it's from mike the owner of answer usa and my sponsor. So I would imagine he's not posting crap. Hell ask him if it comes with the extra's as you will need to do the rod and I would do a rear bearing at least. seal it up and drive it.
+1
If your going to drop the MG66 PRS into a GX, you will need the MG crank to make it worth your while. By the time you have sourced both of those it's probably only a few dollars more to buy a new MG anyway.
The MG crank is a nice addition to the GX motors for a little more zip, particularly at the top end.
Unmodded, the difference between the standard GX motor and the standard MG motor is substantial.
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Old 12-21-2010, 05:00 PM   #26
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Originally Posted by bigmatt View Post
If your trying to piece it into a gxr case you will need the crank also. Actually if you have a gxr engine buy the mg-66 crank and put it in,you will notice a difference. I'm not 100% pos. that the mg sleeve set will work in a gxr case. I thought I read where they would. I am sure some one with more experience will help here. Also on ebay there is a used one[whole engine for 125.00] it's from mike the owner of answer usa and my sponsor. So I would imagine he's not posting crap. Hell ask him if it comes with the extra's as you will need to do the rod and I would do a rear bearing at least. seal it up and drive it.
This the one ??

http://cgi.ebay.com.au/USED-MG66-21-...item4154da8121
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Old 12-21-2010, 05:37 PM   #27
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yes
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Old 12-22-2010, 08:26 AM   #28
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Default MG 66 Piston & Sleeve

I have everything but the piston/sleeve
MG 66 .21 Massive Mods-rhonda-1-20-2010-010_edited.jpg
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Old 12-22-2010, 11:44 AM   #29
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I have everything but the piston/sleeve
Attachment 683268
I'd like to put that crank in my 3 port!
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Old 12-22-2010, 04:40 PM   #30
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What crank !! There's not much left of that one
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