Honda MG & MF 750

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Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Fri Dec 19, 2014 10:49 pm

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Well big day ! all the machining is now done, , pistons, rebore, wrist pins, gapped the rings, .011 top, .012 second, oil .023 These rings a big mommas after the 2 ringers hey, BUT i'm happy, :D right now I just need to get a few passes under the belt before I get into the 2 ring shit again chasing the .01 HP increase

So now I'll strip the bottom end , clean check and reasssemble the lot.

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gennyshovel
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Joined: Tue Mar 29, 2005 10:10 am
Location: Broken Hill

Re: Honda MG & MF 750

Post by gennyshovel » Sat Dec 20, 2014 9:11 am

I can tell when you are in the shed Johno,,the temp is always over 40 here when you do,,thanks for that :lol:
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Sat Dec 20, 2014 9:42 am

:D :D :D good one Genny, your right though, I must have some reptile blood in me.
going to spend some time today in the shed cos tomoz may be a bit warm for an old softy like me , around 40 deg it gets hard , the big choice xmas ham and beer or heat sweat and cursin, :D

Stayt`ie
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Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Re: Honda MG & MF 750

Post by Stayt`ie » Sat Dec 20, 2014 10:44 am

yeah, but at least you blokes dont haffta "swim" thru the air down there,, (76* RH here),, :roll: ,,
First Australian to ride a motorcycle over 200mph at Bonneville,,,

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Sun Dec 21, 2014 9:12 pm

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Was going to just give the bottom end a petrol flush and put the top end back on but I thought after all the hard work I better do a nice job.
So pulled the bottom end apart for a check and a good clean of any aluminium crap from piston burn up.

All looks good, just have to swap the primary drive damper , I replaced the rubber dampers in the hub with hard arse solid plastic.

The bearings all look good, everything else aok :D

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Sun Dec 21, 2014 9:14 pm

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Wish it was back together like yours Finny :wink:

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Sun Dec 21, 2014 9:16 pm

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Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Sun Dec 21, 2014 9:17 pm

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So case cleaned and blown off, the drive hub is changed over , time for some assembly.

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Fri Dec 26, 2014 7:48 pm

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Reassembled the bottom end after a good clean out of molten alloy, not sure why but it is making a rumbling noise, will have to split the cases again
bummer

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Fri Dec 26, 2014 8:14 pm

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Had a nice xmas yesty , ate too much drank too much :D :D :D

Found the problem today , had to split the cases again, found the rumbling noise was from the modified damper I put in , one of the roller bearings had a nick in the outer cage that made it sound like a gear problem, dont have time to try and replace the roller bearings, they are a bitch to replace so I put the stock primary damper back in.

The standard rubber need to be replaced with hard ares plastic when the 60hp engines start making close to 100 HP, the rubber dampers break up and get messy in the oil system, I'll be gentle on the throttle. :roll:

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Fri Dec 26, 2014 8:16 pm

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cases all cleaned up , gearbox sorted again , 3 rd time lucky

Now for the top end.

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gennyshovel
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Location: Broken Hill

Re: Honda MG & MF 750

Post by gennyshovel » Sun Dec 28, 2014 8:05 am

Forwards backwards land visits the mallee too huh ?
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Wed Jan 07, 2015 7:08 pm

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Cleaned up the alloy spray all through no 2 , cleaned up , checked vlaves

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Wed Jan 07, 2015 7:10 pm

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all done cleaned reassembled........again :?

Johno Senior
Posts: 255
Joined: Mon May 21, 2012 12:17 am
Location: Berri Sth Oz

Re: Honda MG & MF 750

Post by Johno Senior » Wed Jan 07, 2015 7:11 pm

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giving the new barrels the big scrub 3 rd time lucky boys !

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