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PostPosted: Fri Sep 26, 2014 10:49 pm 
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998cc
998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1143
Location: Tassie
Who other than GR sells flat top 1100 pistons. I'm getting my 1275 pistons from GR but can warrant spending the same on a small bore thats all.
This is what I read on GR's small bore article
"Now, you could go out and buy some special flat-top pistons, but part of the point of doing this motor is to save money. If you use the standard 998cc pistons, you can machine off the 0.140” crown, to get flat top pistons much more economically."

That was the reason for my question as 998 pistons are as little as $150 for the set.

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PostPosted: Fri Sep 26, 2014 11:51 pm 
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1098cc
1098cc

Joined: Fri Dec 27, 2013 12:24 pm
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Location: Hobart, Tasmania
drmini in aust wrote:
Here's a tip-
Fit the gearbox onto the motor, not the other way around.
The box is lighter, and you can see the 2 dowels better to guide it on straight. :)



Cheers, great advise :D


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PostPosted: Sat Sep 27, 2014 9:50 am 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39751
Location: near Baulkham Hills, NSW
Scoop wrote:
Who other than GR sells flat top 1100 pistons. I'm getting my 1275 pistons from GR but can warrant spending the same on a small bore thats all.
This is what I read on GR's small bore article
"Now, you could go out and buy some special flat-top pistons, but part of the point of doing this motor is to save money. If you use the standard 998cc pistons, you can machine off the 0.140” crown, to get flat top pistons much more economically."

That was the reason for my question as 998 pistons are as little as $150 for the set.


Yes GR said that, however not all 998 pistons are reliable once done. Some are thinner than others. At least check the crown thickness and distance to the top ring, and if you are going to turbo the motor, forget it.
You will also have trouble with these shortened pistons hitting the dizzy driveshaft, you would need to thin it down, or else relieve the bottom of the 998 pistons like 1098 ones are

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Sat Sep 27, 2014 12:51 pm 
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1098cc
1098cc

Joined: Wed Jun 26, 2013 10:05 pm
Posts: 1500
Location: perth WA
Yeah thats fine

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PostPosted: Sat Sep 27, 2014 4:05 pm 
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1098cc
1098cc

Joined: Fri Dec 27, 2013 12:24 pm
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Location: Hobart, Tasmania
Block meets gearbox with a coat of clear gloss :D

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That's head of engineering (Rodney) in the back ground.


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PostPosted: Sat Sep 27, 2014 4:14 pm 
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998cc
998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1143
Location: Tassie
Nice. Getting close now.

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PostPosted: Sun Sep 28, 2014 7:21 am 
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1275cc
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Joined: Sun Apr 29, 2012 1:19 pm
Posts: 4493
Location: Wollongong, NSW
Scoop wrote:
Who other than GR sells flat top 1100 pistons. I'm getting my 1275 pistons from GR but can warrant spending the same on a small bore thats all.
This is what I read on GR's small bore article
"Now, you could go out and buy some special flat-top pistons, but part of the point of doing this motor is to save money. If you use the standard 998cc pistons, you can machine off the 0.140” crown, to get flat top pistons much more economically."

That was the reason for my question as 998 pistons are as little as $150 for the set.

Minis Plus sell them with rebuild kits for $200 more than the standard set, which isn't too much more, seeing as you'd have to get the others machined, and they might not last as well...

This kit plus $200
http://www.minis.com.au/minis/catalog/p ... cts_id=637

Will get you a set of GR pistons in +060 or bigger
http://www.minis.com.au/minis/catalog/i ... Path=21_53

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PostPosted: Thu Oct 09, 2014 1:21 pm 
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1098cc
1098cc

Joined: Fri Dec 27, 2013 12:24 pm
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Location: Hobart, Tasmania
Ceramic coated header pipe is back from CIC 8)


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PostPosted: Thu Oct 09, 2014 4:02 pm 
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1098cc
1098cc

Joined: Fri Dec 27, 2013 12:24 pm
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Location: Hobart, Tasmania
It's getting there :D

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PostPosted: Thu Oct 09, 2014 6:42 pm 
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1275cc
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Joined: Thu May 24, 2007 7:19 pm
Posts: 5370
Location: Yandina,Sunshine Coast,QLD
Holy cr@p that's a shiny clutch housing :D . Who did the polishing?
I just noticed your flywheel breather, a bit scrappy comparing to the rest of the engine :roll: .

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PostPosted: Thu Oct 09, 2014 6:46 pm 
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848cc
848cc

Joined: Thu Jul 24, 2014 7:56 pm
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Location: Gold Coast
It does look quite nice.

Cheers Brad

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PostPosted: Thu Oct 09, 2014 7:00 pm 
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1098cc
1098cc

Joined: Fri Dec 27, 2013 12:24 pm
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Location: Hobart, Tasmania
Kennomini wrote:
Holy cr@p that's a shiny clutch housing :D . Who did the polishing?
I just noticed your flywheel breather, a bit scrappy comparing to the rest of the engine :roll: .



Just spit and polish :wink: nah, it was on my old motor so I've just polished it back up myself with normal cut n polish. A new breather is on it's way from Minisport :D


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PostPosted: Thu Oct 09, 2014 7:18 pm 
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1098cc
1098cc

Joined: Wed Jun 26, 2013 10:05 pm
Posts: 1500
Location: perth WA
My feet will be famous by the end of this build marty.....

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The best part of fixing your mini is the test drive

Minis..

1976 van daily drive
1975 van
1968 deluxe in the shed
1967 deluxe high strung 1310
1959 austin healey sprite


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PostPosted: Thu Oct 09, 2014 7:26 pm 
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1098cc
1098cc

Joined: Fri Dec 27, 2013 12:24 pm
Posts: 1395
Location: Hobart, Tasmania
boomini wrote:
My feet will be famous by the end of this build marty.....



The best looking part of you. Ha ha....... :lol: :lol: :lol:


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PostPosted: Thu Oct 09, 2014 7:32 pm 
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1098cc
1098cc

Joined: Wed Jun 26, 2013 10:05 pm
Posts: 1500
Location: perth WA
Yeah I agree.....

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The best part of fixing your mini is the test drive

Minis..

1976 van daily drive
1975 van
1968 deluxe in the shed
1967 deluxe high strung 1310
1959 austin healey sprite


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