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I have done the cams that I have, for you guys. and what differences I am able to see. Was interesting, but looked for it to be more than it was.

Lets see how it is going to come out. The format here is always different after posting.

Ok got done with it, cams at 105 cl on the intake and 111 cl on the exhaust
from the Brent motor thread and the open and close numbers were the same as book 40 deg.

carb cam spec

3b-r1

exhaust

max 1.5135"

base 1.1886"

lift .3249

open @ .040" 40 deg BBDC

close @ .040" 13 deg ATDC

duration 233 deg

centerline 103.5 deg BTDC

carb cam

3cr2

intake

max 1.5227"

base 1.1877"

lift .335"

open @ .040" 18 deg BTDC

close @ .040" 47 deg ABDC

duration 245 deg

centerline 104.5 deg ATDC

FI cams

ckr2

exhaust

max 1.5130"

base 1.1865"

lift .3265"

open @ .040" 40 deg BBDC

close @ .040" 10 deg ATDC

duration 230 deg

centerline 105 deg BTDC

ckr2

intake

max 1.5145"

base 1.1865"

lift .3280"

open @ .040" 17 deg BTDC

close @ .040" 40 deg ABDC

duration 237 deg

centerline 101.5 deg ATDC

Dean's Webb cams

ner2 casting

exhaust

max 1.5327"

base 1.1754"

lift .3573"

open @ .040" 46 deg BBDC

close @ .040" 17 deg ATDC

duration 232 deg

centerline @ 110 deg BTDC

intake

lcr1 casting

max 1.5223"

base 1.1750"

lift .3473"

open @ .040" 21 deg BTDC

close @ .040" 58 deg ABDC

duration 259 deg

centerline 108.5 deg ATDC

Thanks Tomek, you can check my numbers too, but I think they are right, now. updated and corected 1/30/10 sb

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I have done the cams that I have for you guys. and what differences I am able to see. Was interesting, but looked for it to be more than it was.

Lets see how it is going to come out. The format here is always different after posting.

Ok got done with it, cams at 105 cl on the intake and 111 cl on the exhaust
from the Brent motor thread and the open and close numbers were the same as book 40 deg.

carb cam spec

3b-r1

exhaust

max 1.5135"

base 1.1886"

lift

open @.0040" 40 deg BBDC

close @ .040" 13 ATDC

duration 233

centerline 103.5

carb cam

3cr2

intake

max 1.5227"

base 1.1877"

lift

18 BTDC

47 ABDC

duration 245

centerline 104.5

FI cams

ckr2

exhaust

max 1.5130"

base 1.1865"

lift

open @ .040" 40 BBDC

close @ .0400 10 ATDC

duration 230

centerline 105

ckr2

intake

max 1.5145"

base 1.1865"

lift

open @ .0400" 17 BTDC

close @ .0400" 40ABDC

duration 237

centerline 101.5

deans webb cams

ner2 casting

exhaust

max 1.5327"

base 1.1754"

lift

open @ .040" 46 BBDC

close @ .0400" 17ATDC

duration 232

centerline @ 110 deg

intake

lcr1 casting

max 1.5223"

base 1.1750"

lift

open @ .0400" 21 BTDC

close @ .0400" 58 ABDC

duration 259

centerline 108.5 ATDC

As you can see I have left some places empty, some are just needing some calculations and will fill in later. I need to go and eat and entertain Vic so will finish up latter.

Plus I want to see the post and formating.

I`ve hepled you with some of those empty spaces.Rather short lift,especially for intakes. ( what are they anyway,32 mm ?)

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  • 1 month later...

Could you describe the difference.

When does it start to really pull, any flat spots, torgue dips, peak power and rpm, how high will it rev?

Did you change springs and valves too? Compression?

At speed, my bike seems to pull hard right till the limiter. I'm not sure if our tachs lag.

I wonder what the actual limits are stock and with springs/valves/cams.

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