My 1330 revs to 6500. But doesn't make much more power than 6000, when I did a hillclimb I looked down at the tacho, becoz with the helmet on I couldn't hear much i saw it peaking at just below 7000, so that's when i shifted into 3rd gear! But seriously 4000 is cruising rpm. An 1100 won't rev as high as my 1330. But 4 grand won't hurt her. I wouldn't complain about cruising at 5 grand in my car. I wouldn't want to do long periods any higher tho.

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1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T

My 1152 will rev over 7500 if you take it there. Don't talk crap.

In between 4-5k is better for your engine apparently Sean than 3.5 and lower as the engine harmonics are worse.

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Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484

yeah wtf my 1132 will easily see 7000 with a standard carb+inlet/exhaust

i agree about the harmonics, but it depends what size motor you have

My Red Mini with 1100 often saw 7500, especially in the school carpark for some reason (ask Lisa Mini Mad)

Daniel

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Videos - Turbocharged A-Series on Dyno & at Wakefield
Mafs waz not my strong subgeckt at skkol

Haha i will, showing off to the girls?

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Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484

7000+ from an 1100 is crazy! Not stock ay? I've been in people's 1100 Mini K's and mokes and they max at about 5500. They were stock and seemed to run nice. Ryan, your 1132 is not an '1100' I meant normal stock engines, that engine ain't stock! Im sure if my engine wasn't stock it would rev that high also. Also aren't a bit worried at that rpm? I got EN40B crank, double timing chain etc. 1100s don't have any of that nice stuff.

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1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T

It's all dependant on cam. If you have a stock cam then yes they were designed to max out about 5500rpm. If you have a race cam then they don't make power until 3500 or 4000rpm!

Big bores don't rev as hard as 998's with their short strokes so don't knock the small bores!!

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Lillee - 1969 Morris Mini K

Size has nothing to do with it! are you saying that a 500cc bike engine can't rev as hard as a 6L V8???

It's all setup: cam, valve lift, spring rates, where the engine revs to is where the power starts to drop off, ie. where the volume of air and fuel flow reaches it's maximum, or your valves start to bounce, or your crank is falling to pieces...

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Lillee - 1969 Morris Mini K

Standard redline for a Cooper S as per the marks on the speedo is 6800 rpm and many a race mini will see 8500 rpm ask Grieg, takes a lot of work, GR destrokes and overbores the really good J cars to stay under 1300, have known of a couple of big bore shrort stokers to see around 10,000 was one that lived in Brissy that had all the good bits, Allen crank and special rods and the like used to see 9500 all the time

Jon

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Roundies and Clubbies(except vans) are both ugly that is why I have Midas and a van
1293 Mini Midas Bronze,1275 Clubman van

1098s properly prepped will take a rev, ask any Sprite racer...
Vizard says they will stand 8K for a while.
My 1220 Mini back in 1968 used to see 8500 often, and it lasted 20,000 miles of abuse. crank was a new 1098, balanced and shot peened.
It wasn't the crank that stopped it, but the circlips in the (*%$^ Imp pistons.

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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.

meenis stock and has been up and over 6500 but i wouldnt recomend more then a second at that much before one of the pistons shoots throught the bonnet..

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Potato

my 1100 has a duplex timing chain, its built properly and balanced, so i have no worries at all about revving it

what you are saying is, the cooper "S" motors were built to race, the smallbore motors were not.

I'm pretty sure mine had a 731 cam, this was stock-ish, and the head was a 12G295 unported with twin jugs on it.

The engine didn't seem to worried about high revs, but the dynamo didn't like it and sent brass filings all through my engine bay one day.

Stock engines probably cam and valve springs would limit rpm capability I spose, I don't know as I've never owned a mini unmodified in the engine dept.

Daniel

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Videos - Turbocharged A-Series on Dyno & at Wakefield
Mafs waz not my strong subgeckt at skkol

The first things that will stop an engine from revving high are valve springs and ignition points.
The reason that a lot of people can get their engines to rev over 6000rpm without problems is probably due to Smiths tachos.

No, please don't tell me what I was saying as I know what i said. I wasn't having a go at small bore drivers, just that your 1100 ain't standard I was refering to stock engines, i should have made that more clear. I was actaully talking to someone else when i said that. But you decided I was having a go at you. And of course, you car is built up to be a solid performer, but were 1100's from factory? I don't think so, they drive nicely but are be no means race engines. I actaully don't believe the 'S' is a 'racing' engine just built tougher than all the other motors.

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1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T