1098 mm head vs mg midget 1100 head.

Discuss mechanical problems here.
Forum rules
By using this site, you agree to our rules. Please see: Terms of Use
Post Reply
ceebdub
Newbie
Posts: 2
Joined: Fri Mar 18, 2016 7:56 pm
MMOC Member: No

1098 mm head vs mg midget 1100 head.

Post by ceebdub »

Does anyone know if there is a difference between a midget 1100 head/ valves/ springs vs a Morris Minor 1098head?
I have a customer with a Midget head that I have been quoted for by a machine shop for unleaded work, but notice that Minor exchange heads are much cheaper that that quote.Thanks in advance.
philthehill
Minor Maniac
Posts: 11585
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: 1098 mm head vs mg midget 1100 head.

Post by philthehill »

Check the casting number on the head against the chart below for detailed specifications.[frame]Image[/frame]

The 12G295 head is the head to use on a small bore engine. Much better porting and valves/springs than the 12G202 fitted to the 1098cc Minor.
If you do fit a 12G202 instead of a 12G295 head it will be real backward step as regards performance.
Phil
Last edited by philthehill on Thu Jul 21, 2016 6:00 pm, edited 1 time in total.

ceebdub
Newbie
Posts: 2
Joined: Fri Mar 18, 2016 7:56 pm
MMOC Member: No

Re: 1098 mm head vs mg midget 1100 head.

Post by ceebdub »

Many thanks
bmcecosse
Minor Maniac
Posts: 46561
Joined: Wed Feb 16, 2005 11:24 pm
Location: ML9
MMOC Member: No

Re: 1098 mm head vs mg midget 1100 head.

Post by bmcecosse »

The 295 will need skimming by 60 thou if used on a 1098 Minor engine - and don't waste money on 'unleaded' - it's not necessary unless pounding hard along fast roads regularly. Do set valve gaps to 15 thou, nad check/reset every 3000 miles.
ImageImage
Image
Post Reply