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 Posted: Sep 5, 2017 04:22AM
Total posts: 3490
Last post: Sep 22, 2017
Member since:Oct 8, 2011
US
Another nice feature of the later A+ 998 blocks is the press fit rods. While I have pressed many bushing in and sized over the years, you only need one piston pin snap ring to come adrift. I did look at having an 998 crank cut down to fit a 850 block. I think I was quoted $250/ $300 and decided to do something else. Steve (CTR)

 Posted: Sep 4, 2017 10:54AM
mur
Total posts: 5665
Last post: Sep 21, 2017
Member since:Nov 12, 1999
I just think that a later thick flange block is a more worthy starting point for what you want to do, and since 998 and 1098 blocks are dimensionally identical, your ancient blocks can head off to recycling and the Y drilled 1098 crank can go into a superior block. You can line bore the mains of the 998 block and put a strap on the center cap and despite the longer stroke end up with a fairly reliable bottom end.

I would think that there is a 998 from the seventies somewhere near you that would be ideal. Maybe even a very late block from just before the A+ blocks, and those use the later front plate with the tensioner on the timing chain. All of a sudden you get some awesome sophistication. Of course, one can argue both for and against A+ blocks as they always have the tensioner, have stiffening ribs and thick flanges but use an allegedly lesser spec cast iron. I have no experience building performance engines with them so only offer the arguements I have heard. I have certainly seen thin flange small bore blocks that suffered catastrophic failures. 

 Posted: Sep 4, 2017 08:44AM
Total posts: 173
Last post: Sep 4, 2017
Member since:Apr 30, 1999
Mur,

I've got two nearly complete 1100s. (blocks, rods and cranks)

I'm trying to build to Graham Russell specs.

Rocky in Merritt Island, Fl.

--WETSU--

 Posted: Sep 4, 2017 07:37AM
mur
Total posts: 5665
Last post: Sep 21, 2017
Member since:Nov 12, 1999
Can you not find a thick flange 998 block to do this with? That would be my choice.

 Posted: Sep 4, 2017 07:11AM
Total posts: 173
Last post: Sep 4, 2017
Member since:Apr 30, 1999
Thanks Spitz.

It is one of two 1100 blocks I have.

PVC engine is unknown.

I had read where the early 1100's were bored out 850's.

The numbers show post 1964 which should be good for a 68mm/1100 I am slowly building.

Rocky in Merritt Island, Fl.

--WETSU--

 Posted: Sep 3, 2017 05:56PM
Total posts: 13276
Last post: Sep 19, 2017
Member since:Jan 22, 2003
CA
Does it have a PCV system.....?
Later than 64 anyway....not much I know

from a colleague....: "This engine number format was used by BL up to and including the 1971 model year.

The initial MG 1100 engines had 10GR-Ta-Hxxxxx, with later engines (mid-1964 on) having 10GRB-Ta-Hxxxxx with a PCV system."

 

"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May

"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge

 

 

 

 Posted: Sep 3, 2017 09:33AM
Total posts: 173
Last post: Sep 4, 2017
Member since:Apr 30, 1999
Can anyone tell me when this 1100 block was manufactured.....10GBR-TA-H56832...?

Thanks in advance

Rocky in Merritt Island, Fl.

--WETSU--