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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Wed Jul 30, 2014 4:54 pm    Post subject: BLOWN MM Reply with quote

G'day all
My MM is supercharged at 15 PSI, Major brakes on front, 1000 rear end with 4.22:1 centre, alloys and all the other stuff required by VSB 14. Will post some pics when I learn how to.

Cheers Bob


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graham
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Joined: 06 Dec 2008
Posts: 744
Location: Wanguri NT

PostPosted: Wed Jul 30, 2014 5:24 pm    Post subject: Reply with quote

G'day

Sounds interesting, I look forward to the pictures.
The standard MM has a claimed power of about 21kw, how much improvement do you get with the blower?

Cheers
Graham
Very Happy Very Happy Blue Sedan Very Happy Very Happy



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58 2 door with Mazda 13B. Morris 13/160 Previous: First car $60 2 door 45years ago.

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An unreasonable man does not.
Therefore the unreasonable man
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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Wed Jul 30, 2014 5:44 pm    Post subject: BLOWN MM Reply with quote

Hi Graham

Standard MM claims 27.5 HP which is 20.5 Kw. When mine was set up on dyno it recorded 33.3 Kw. at 5000 rpm. I have had the motor up to 7000 RPM for a short bursts. However it goes a lot harder using a 4500 to 5000 limit due to the tremendous low down torque but mainly due to the fact that faster gear upchanges can be made at lower revs. The synchros at higher RPM are almost completely useless, requiring double declutching. This is painfully slow even with more than 2.5 Kg. removed from the flywheel.

Cheers Bob


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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Wed Jul 30, 2014 7:22 pm    Post subject: BLOWN MM Reply with quote

Hi all
My quoted figure of 33.3 KW. was rear wheel Kw. This equates to just over 40 flywheel HP. Bit better than Mr. Nuffield's 27.5.

Cheers Bob


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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Wed Jul 30, 2014 7:45 pm    Post subject: BLOWN MM Reply with quote

G'day again
My last post should have read 33.3 rear wheel Kw. which is a bit over 40 flywheel Kw. This equates to about 54 flywheel Hp. Not quite double Mr Nuffields 27.5.
Cheers Bob


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Kel
我能行


Joined: 31 Mar 2008
Posts: 379
Location: Hunter Valley

PostPosted: Thu Jul 31, 2014 9:34 am    Post subject: Reply with quote

Bob,
Would be nice to see some pictures and to hear a little more about the supercharger.
Kel



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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Thu Jul 31, 2014 10:58 am    Post subject: BLOWN MM Reply with quote

Hi Kel
Will post pics as soon as I learn how to. The blower is a roots pump made by Asian and is designated AMR 500 because it's displacement is 500 cc's per revolution. When driven at 1.936:1 times crank speed indicated boost is a bit over 15 PSI (a little over 1 bar) and results in 33.3 RW Kw @ 5000 RPM. I am doing a little experimenting at present and have reduced the drive ratio to 1.66:1 resulting in the boost dropping to 30.1 RW Kw. at 5000. This is not a proportionate drop and is what I am trying to understand. Even so 30.1 Kw. equates to 48.6 FW HP which is still pretty good.
Cheers Bob


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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Thu Jul 31, 2014 1:50 pm    Post subject: BLOWN MM Reply with quote

Hi All
Here are some pics of my car







Cheers,
Bob


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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Thu Jul 31, 2014 1:59 pm    Post subject: BLOWN MM Reply with quote

Hi again

Here are some pics of the motor with the aftermarket alloy Kleinig head








Cheers Bob




Last edited by Bally on Thu Jul 07, 2016 4:47 pm; edited 1 time in total
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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Thu Jul 31, 2014 2:03 pm    Post subject: BLOWN MM Reply with quote

Hi Guys

Here are pics of the motor with the alloy head replaced by an original cast iron one







Cheers Bob


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Kel
我能行


Joined: 31 Mar 2008
Posts: 379
Location: Hunter Valley

PostPosted: Thu Jul 31, 2014 5:43 pm    Post subject: Reply with quote

that's impressive !!!



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frosty
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Joined: 23 Dec 2003
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Location: 4559 near a big pineapple, Qld

PostPosted: Thu Jul 31, 2014 8:41 pm    Post subject: Reply with quote

One word ...............


WOW



well done .... a lot of hard yards there



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brundahted
4th gear


Joined: 06 Sep 2012
Posts: 76
Location: Grenfell 2810

PostPosted: Thu Jul 31, 2014 9:36 pm    Post subject: Reply with quote

That's a very handsome beastie!!!!!


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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Thu Jul 31, 2014 10:42 pm    Post subject: BLOWN MM Reply with quote

Hi Guys
Thanks a million for the complements - sorta makes it all worthwile.

Cheers Bob


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graham
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Joined: 06 Dec 2008
Posts: 744
Location: Wanguri NT

PostPosted: Fri Aug 01, 2014 12:19 pm    Post subject: Reply with quote

G'day Bob

A very neat looking MM with a sting.
I am guessing that the internals of the engine are not quite as Mr Morris made them.

Cheers
Graham
Very Happy Very Happy Blue Sedan Very Happy Very Happy



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58 2 door with Mazda 13B. Morris 13/160 Previous: First car $60 2 door 45years ago.

A reasonable man accepts what is
An unreasonable man does not.
Therefore the unreasonable man
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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Fri Aug 01, 2014 3:46 pm    Post subject: BLOWN MM Reply with quote

Hi Graham
Not as much sting as your rotary. Internals as you said not what Mr. Morris used. Crank is stock standard. I knew of a couple of Morris 8 engined specials racing in the GEAR or classic events that were blown at 12 to 14 PSI and circulated all day at 7500 RPM. One was using standard rods. The biggest killer is the excessive weight of overbored pistons. I modified a Morris 8 with 2 mm. O/S bore and the JP piston, rings and pin weighed in at 260 grams compared to 200 for a standard pot with rings and pin! My rods are Argo CNC machined and shot peened from 4340 HT alloy steel with 17 mm. fully floating pins instead of standard 15 mm. pins. Fitted with ARP 2000 series rod bolts - the all up weight of one of these rods with cap and bolts is 479 grams as against 486 for standard rod, cap, bolts and nuts. Pistons are forged from 2618 aluminium alloy. The all up weight of one of these 3 mm. O/S pistons with rings, pins and circlips is 211 grams - just 11 more than standard and 49 less than JP's at 2 mm. O/S. The rest is textbook - porting, O/S valves, cam reprofiled, good balance, lightened flywheel. With the bottom end and pots like this if I were to have it normally aspirated with 11/4" SU's and a suitable cam and springs I would not hesitate to rev it to 8000 plus. However the low down grunt the blower gives it is a waste of time going much over 5 to 6 thousand RPM.
Cheers Bob


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DON58VAN
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Joined: 25 Sep 2008
Posts: 787
Location: Wagga/Sydney/Bowral

PostPosted: Fri Aug 01, 2014 6:21 pm    Post subject: Reply with quote

I am pleased to add my WOW! to the previous one. Very Happy

Don



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1958 Morris Minor van--not on road yet
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Bally
At rest


Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Fri Aug 01, 2014 6:55 pm    Post subject: BLOWN MM Reply with quote

Hi Guys
Thanks for the replies.
Cheers Bob


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Lukezaid
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Joined: 01 Feb 2010
Posts: 391
Location: Woolgoolga

PostPosted: Fri Aug 01, 2014 7:37 pm    Post subject: Reply with quote

Awesome


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graham
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Joined: 06 Dec 2008
Posts: 744
Location: Wanguri NT

PostPosted: Sat Aug 02, 2014 1:30 pm    Post subject: Reply with quote

G'day Bob

Mine might have 3 times the sting but I bet you got a lot more satisfaction from your efforts to get nearly 100% increase in power , with the original engine.

Very well done and it looks good too.

Have you any pictures of the in side?

Cheers
Graham
Very Happy Very Happy Blue Sedan Very Happy Very Happy



_________________
58 2 door with Mazda 13B. Morris 13/160 Previous: First car $60 2 door 45years ago.

A reasonable man accepts what is
An unreasonable man does not.
Therefore the unreasonable man
is responsible for all change.
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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Sat Aug 02, 2014 2:18 pm    Post subject: BLOWN MM Reply with quote

Have only one pic so far of inside




Original clock, tacho, boost gauge, temp gauge and Redarc low coolant alarm. The siren operated by the Redarc is also operated by a low oil pressure switch which can be seen on the oil filter block.
Cheers Bob




Last edited by Bally on Tue Mar 07, 2017 9:52 pm; edited 1 time in total
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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Sat Aug 02, 2014 2:20 pm    Post subject: BLOWN MM Reply with quote

Forgot to include Tom Tom GPS for accurate speed indication.

Bob


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moridat
Free Wheeling


Joined: 25 Feb 2006
Posts: 119
Location: JUNEE

PostPosted: Sat Aug 02, 2014 6:24 pm    Post subject: Reply with quote

a very tidy unit is the bonnet of a commercial unit it is the same as my 54 ute you have done a wonderful job congratulations I am currently making a turbo manifold for my 54 ute Datsun A1400 engine it is accredit to you.
moridat Yellow Ute Yellow Ute Yellow Ute Yellow Ute


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brundahted
4th gear


Joined: 06 Sep 2012
Posts: 76
Location: Grenfell 2810

PostPosted: Sat Aug 02, 2014 7:48 pm    Post subject: Reply with quote

Deadly!


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Bally
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Joined: 19 May 2011
Posts: 219
Location: ACT

PostPosted: Sat Aug 02, 2014 8:12 pm    Post subject: BLOWN MM Reply with quote

Hi Guys

Just to say thanks all for the interest and comments about my beast.

Cheers Bob


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