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Engine Capacity?????

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mini_van_1970

Post subject: Engine Capacity?????

Posted: Tue Jul 26, 2005 6:11 pm

998cc

Joined: Mon Nov 15, 2004 9:53 pm
Posts: 611
Location: Maryborough Qld.

Ok I was just wondering what size the engine capacity goes to once bored out to certain thousands of an inch
eg: 850 .020" = ........
.040" = ........
.060" = ........
etc,etc,etc

Just out of curiousity

the doc might (probaly) would know

Pat

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benjamin

Post subject:

Posted: Tue Jul 26, 2005 7:06 pm

1098cc

Joined: Sat Feb 05, 2005 9:02 pm
Posts: 1753
Location: Leonay nsw

i just worked these out so not sure how correct they are

850 is actually 848cc
+20thou = 863.3cc
+40thou = 877.2cc
+60thou = 891.2cc

998
+20thou = 1015cc
+40thou = 1030.4cc
+60thou = 1046.5cc

1098
+20thou = 1115cc
+40thou = 1132cc
+50thou = 1141cc (thas what mine is)
+60thou = 1152cc

if you want any more ill calculate them for u :wink:

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drmini in aust

Post subject:

Posted: Tue Jul 26, 2005 8:11 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39757
Location: near Baulkham Hills, NSW

For a 1098 you can now get +.080" Hypatec flat tops again. Lovely...

These will give you 1162cc.

Graham Russell has them. :wink:

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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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rampage101

Post subject:

Posted: Tue Jul 26, 2005 8:44 pm

998cc

Joined: Wed Mar 17, 2004 8:52 am
Posts: 734
Location: NSW Australia

Any idea on price for them Doc? Would they be suitable for a turbo buildup?

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mini_van_1970

Post subject:

Posted: Tue Jul 26, 2005 8:53 pm

998cc

Joined: Mon Nov 15, 2004 9:53 pm
Posts: 611
Location: Maryborough Qld.

rampage101 wrote:

Any idea on price for them Doc? Would they be suitable for a turbo buildup?

I wouldn't think thatit would be wise to run a turbo because at that capacity the walls of the bores would be to thin and I wouldn't like to be there when it blew up

Hey ben what is the bores for a 1275cc?

Pat

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drmini in aust

Post subject:

Posted: Tue Jul 26, 2005 8:53 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39757
Location: near Baulkham Hills, NSW

rampage101 wrote:

Any idea on price for them Doc? Would they be suitable for a turbo buildup?

Sorry no idea on price really, & for turbo the C/R would probably be too high. You need some nice dished ones... :wink:

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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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mini_van_1970

Post subject:

Posted: Wed Jul 27, 2005 9:31 pm

998cc

Joined: Mon Nov 15, 2004 9:53 pm
Posts: 611
Location: Maryborough Qld.

So I'll just bump this up here. Hopefully find out what the capacity would be for a 1275cc engine that has been bored out 20,40,60thou and so on if anyone knows

Pat

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justminis

Post subject:

Posted: Wed Jul 27, 2005 9:43 pm

998cc

Joined: Fri Mar 26, 2004 8:44 pm
Posts: 1084
Location: Far North Queensland

1275cc
+0.020" = 1293
+0.040" = 1310
+0.060" = 1330
bore to 73mm = 1360
bore to 73.5mm = 1380
bore to 74mm = 1400

edit: assumes std stroke.

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Steve

Last edited by justminis on Wed Jul 27, 2005 10:02 pm, edited 1 time in total.

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drmini in aust

Post subject:

Posted: Wed Jul 27, 2005 9:49 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39757
Location: near Baulkham Hills, NSW

And the 74mm ones appear to be unobtainium now. :cry:

Steve you forgot 74.7mm, (Triumph 2.5PI) 1426cc...

Block's getting a bit thin, isn't it...

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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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1380 yellow devil

Post subject:

Posted: Thu Jul 28, 2005 8:05 am

998cc

Joined: Tue Mar 23, 2004 9:52 pm
Posts: 874
Location: Bundaberg QLD

drmini in aust wrote:

And the 74mm ones appear to be unobtainium now. :cry:

Steve you forgot 74.7mm, (Triumph 2.5PI) 1426cc...

Block's getting a bit thin, isn't it...

Very thin may even break into the oil ways.

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