Ausmini
It is currently Sat Jul 05, 2025 6:19 am

Board index » Mini Chat » Mini & A/A+ Series Mods

All times are UTC + 10 hours




Post new topic Reply to topic  Page 1 of 3
  [ 35 posts ]  Go to page 1, 2, 3  Next
  Print view Previous topic | Next topic 
Author Message
cush
 Post subject: Power Tuning the 1275
PostPosted: Fri Apr 28, 2006 1:59 pm 
Offline
THIS SPACE FOR RENT
User avatar

Joined: Wed Jun 09, 2004 3:35 pm
Posts: 11847
This can include the 970 and 1070 big bore boys if you like.

_________________
Image
Top
 Profile  
 
Lillee
 Post subject:
PostPosted: Fri Apr 28, 2006 2:07 pm 
Offline
1360cc
1360cc
User avatar

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney
Cush, it's the same for all engines, not just mini engines.

More air + more fuel = more power

Make it breath better in and out, provide adequate fuel to match that air flow, make internal components lighter so it spins easier.

For A series it's even more all the same. Head work, bigger carb, better intake, better exhaust.

ANSWER: READ YOUR VIZARD BOOK! 8)

_________________
Lillee - 1969 Morris Mini K
Top
 Profile  
 
cush
 Post subject:
PostPosted: Fri Apr 28, 2006 2:34 pm 
Offline
THIS SPACE FOR RENT
User avatar

Joined: Wed Jun 09, 2004 3:35 pm
Posts: 11847
ruiner... :)

_________________
Image
Top
 Profile  
 
Lillee
 Post subject:
PostPosted: Fri Apr 28, 2006 5:02 pm 
Offline
1360cc
1360cc
User avatar

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney
Who me? No 8)

_________________
Lillee - 1969 Morris Mini K
Top
 Profile  
 
h0nk
 Post subject:
PostPosted: Fri Apr 28, 2006 7:54 pm 
Offline
1275cc
1275cc
User avatar

Joined: Sun Apr 04, 2004 7:36 pm
Posts: 2146
Location: sydney
Excellent info, very useful. This should be a sticky.
Top
 Profile  
 
gafmo
 Post subject:
PostPosted: Fri Apr 28, 2006 8:42 pm 
Offline
the King of Bling
User avatar

Joined: Thu Jun 03, 2004 11:11 pm
Posts: 19858
Location: Baulkham Hills
But thier are others that have some secret's that they will not devolge :wink:

_________________
Stop Licking the Dog...I Don't Care Who Started It
Top
 Profile  
 
Spaceboy
 Post subject:
PostPosted: Sat Apr 29, 2006 1:58 am 
Offline
1360cc
1360cc

Joined: Mon Nov 01, 2004 4:36 pm
Posts: 7673
i believe the best way to modify a BIG BLOCK 1275 would be to STROKE IT and keep the revs down with a MEATY cam and balance the hell out of it, as 1275's are ROUGH
keep the heavy flywheel to lay big blackies
Top
 Profile  
 
drmini in aust
 Post subject:
PostPosted: Sat Apr 29, 2006 8:21 am 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39752
Location: near Baulkham Hills, NSW
Spaceboy wrote:
i believe the best way to modify a BIG BLOCK 1275 would be to STROKE IT and keep the revs down with a MEATY cam and balance the hell out of it, as 1275's are ROUGH
keep the heavy flywheel to lay big blackies

Speak for yourself, my 1360 with S crank & rods is dead smooth from 3K-8K... :lol:
Only the big journal 1100S ones with those bloody heavy rods are rough, IMO. :wink:

_________________
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:
Top
 Profile  
 
Lillee
 Post subject:
PostPosted: Sat Apr 29, 2006 11:48 am 
Offline
1360cc
1360cc
User avatar

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney
Best way is to make everything as light as possible so that it spins freely from standstill to 7000+ rpm. Make sure it breaths effortlessly and deeply, increase the compression ratio and way you go :wink:

_________________
Lillee - 1969 Morris Mini K
Top
 Profile  
 
drmini in aust
 Post subject:
PostPosted: Sat Apr 29, 2006 12:08 pm 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39752
Location: near Baulkham Hills, NSW
68Delux wrote:
Best way is to make everything as light as possible so that it spins freely from standstill to 7000+ rpm. Make sure it breaths effortlessly and deeply, increase the compression ratio and way you go :wink:

No need to lighten much on a small journal roady motor- I just used the stock Cooper S crank and rods, all balanced though. :wink:

_________________
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:
Top
 Profile  
 
1360 LS
 Post subject:
PostPosted: Tue May 02, 2006 8:16 am 
Offline
1275cc
1275cc

Joined: Thu Mar 30, 2006 8:22 am
Posts: 2292
Location: Somewhere...... over the rainbow
drmini in aust wrote:
Spaceboy wrote:
i believe the best way to modify a BIG BLOCK 1275 would be to STROKE IT and keep the revs down with a MEATY cam and balance the hell out of it, as 1275's are ROUGH
keep the heavy flywheel to lay big blackies

Speak for yourself, my 1360 with S crank & rods is dead smooth from 3K-8K... :lol:
Only the big journal 1100S ones with those bloody heavy rods are rough, IMO. :wink:



I've a 1360 with S rods crank etc... mine only revs to 5- 5.5 ... mind you no headwork or cam work . should my car be able to be revved higherr or its that the best . Dont wnat a race car as its a daily.
Top
 Profile  
 
Lillee
 Post subject:
PostPosted: Tue May 02, 2006 8:44 am 
Offline
1360cc
1360cc
User avatar

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney
Hello 1360 LS, do you have a green LS? I see a green LS in the mornings sometimes driving through Five dock...

If you have a stock head and cam there may be no more power above 6000 anyway

_________________
Lillee - 1969 Morris Mini K
Top
 Profile  
 
Spaceboy
 Post subject:
PostPosted: Tue May 02, 2006 8:47 am 
Offline
1360cc
1360cc

Joined: Mon Nov 01, 2004 4:36 pm
Posts: 7673
the tacho redlines at 5.5k so thats normal.
with modifications, they will see crazy revs, but yeah totally unneccesary for a daily driver.
the stock cam is probably the best for traffic use as i find most fast road cams only start delivering power around 3000 rpm, and thats when you should be changing gear.
Top
 Profile  
 
Mini Mad
 Post subject:
PostPosted: Tue May 02, 2006 3:16 pm 
Offline
ET 13.457 seconds , OH YEAH !!!!
User avatar

Joined: Sun Sep 19, 2004 8:35 am
Posts: 7826
Location: Somewhere Around Sydney
Spaceboy wrote:
i find most fast road cams only start delivering power around 3000 rpm, and thats when you should be changing gear.


3000rpm? Who says? :lol:

_________________
Image
Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484
Top
 Profile  
 
1360 LS
 Post subject:
PostPosted: Wed May 03, 2006 7:12 am 
Offline
1275cc
1275cc

Joined: Thu Mar 30, 2006 8:22 am
Posts: 2292
Location: Somewhere...... over the rainbow
68Delux wrote:
Hello 1360 LS, do you have a green LS? I see a green LS in the mornings sometimes driving through Five dock...

If you have a stock head and cam there may be no more power above 6000 anyway


there's a green one around my area???? can't say i seen it. I have a Hi ho Silver LS number plate KAE 883 . I told there original plates too. keep a eye for me in the next couple of weeks coz thats all I have my licence for. Losing it as soon as I get a RTA notice.


only green Mini I seen around my area is a solid panel van.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 3
  [ 35 posts ]  Go to page 1, 2, 3  Next

Board index » Mini Chat » Mini & A/A+ Series Mods

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 17 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.