KZScott
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posted December 28, 2010 07:31 AM
what would tool would you buy
if you needed to measure the small ends of rods and wrist pin bores say 2-3 times a yr? or would you just take the parts to a shop?
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
  
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Y2KZX12R
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posted December 28, 2010 07:44 AM
You can buy a small bore gauge that measures in .0001" increments.
We use the dial bore gauge on the rod hone machine.
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dougmeyer
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posted December 28, 2010 10:51 AM
Why do you need to measure them (so often)?
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KZScott
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posted December 28, 2010 11:04 AM
other peoples bikes aswell as mine
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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Gixx1300R
Expert Class
Posts: 218
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posted December 28, 2010 03:54 PM
I love my Mitutoyo Electronic Micrometers and Dial Bore gauges
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dougmeyer
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moderated
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posted December 28, 2010 06:41 PM
 Edited By: dougmeyer on 29 Dec 2010 02:42
I think I'd take them to a shop with a Sunnen pin hone and have them checked, and honed. Oh wait! That's what I already do.
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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Y2KZX12R
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posted December 28, 2010 07:09 PM
quote:
I think I'd take them to a shop with a Sunnen pin hone and have them checked, and honed. Oh wait! That's what I already do.
Scott, with some new pistons the pins are most often too tight in the pistons anyway. They need to be honed a few more tenths. We have seen new pistons with only .0004" clearance in the pins. Not good on a racing engine.
Speaking of Sunnen...... I just ordered a new Sunnen small line hone mandrel so we can line hone the mains on these bike motors. These mains are all over the place. Tight spots everywhere on my zx14 cases. Cylindricity is something you cant measure with a bore gauge.
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Y2KZX12R
CompetitionCNC.com
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2000redrocket
Pro
Posts: 1662
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posted December 28, 2010 10:04 PM
so jim are you saying you can now line bore my cases on the zx12?
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gs11ezrydr
Novice Class
Posts: 34
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posted December 28, 2010 10:25 PM
Edited By: gs11ezrydr on 29 Dec 2010 06:26
I was wondering if any one uses an index rod on any of the plain bearing crankshaft motors. I have two sizes 18mm and 20 mm purchased from Falicon and when ever I have a top end off I always check the index.Since I am using it on press together ball bearing crankshafts by inserting it through all four small rod ends at the same time to see if the crank has twisted any.Would it be usefull or any benefit on plain bearing cranks ?As far as measuring small ends and piston bores I have a small set of cheap telescoping bore gauges since they just transfer measurements I spent the money on the micrometers plus I can get then into small places through out the motor.Though I use Mitutoya dial bore gauges for cylinders.Also has any one used the bore gauge that looks like a peace sign with four contact areas? Centers things up and looks cool. I have been thinking about getting one.
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Y2KZX12R
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posted December 29, 2010 05:04 AM
Edited By: Y2KZX12R on 29 Dec 2010 13:05
quote:
so jim are you saying you can now line bore my cases on the zx12?
Yes very shortly.
GS11, its best to directly measure bores.
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted December 29, 2010 06:13 AM
quote:
I was wondering if any one uses an index rod on any of the plain bearing crankshaft motors. I have two sizes 18mm and 20 mm purchased from Falicon and when ever I have a top end off I always check the index.Since I am using it on press together ball bearing crankshafts by inserting it through all four small rod ends at the same time to see if the crank has twisted any.Would it be usefull or any benefit on plain bearing cranks ?As far as measuring small ends and piston bores I have a small set of cheap telescoping bore gauges since they just transfer measurements I spent the money on the micrometers plus I can get then into small places through out the motor.Though I use Mitutoya dial bore gauges for cylinders.Also has any one used the bore gauge that looks like a peace sign with four contact areas? Centers things up and looks cool. I have been thinking about getting one.
I faithfully used my 17mm index rod on my KZ`s ANYTIME I had the topend off or got a new crank just to make sure.....
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entropy
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posted December 29, 2010 06:54 AM
one lil issue with line boring, gotta make sure you have bearing to accomodate the additional width. My Carpenter design billet crank is already running at the thickest main bearings available. I could only tolerate a couple tenth's max add'l width on the cases.
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Y2KZX12R
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posted December 29, 2010 09:00 AM
Edited By: Y2KZX12R on 29 Dec 2010 17:01
Were not going to line bore. Just line hone.
Yea there isnt much to work with Karl.
We are basically going to just remove the high spots and true up the sadle alignment.
Were talking tenths here.
It would be great if they made .002" o/s o/d bearings.
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KZScott
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posted December 29, 2010 03:23 PM
what kind of time frame and price are we looking at for line honing cases Jim? you might be getting more than a damaged cylinder head from me. are there any oiling mods you would suggest?
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
Y2KZX12R
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posted December 30, 2010 05:35 AM
I'll have more info on line-honing the mains shortly.
We normally do some porting of the oil pump housing to reduce the chance of cavitation.
And the Suzuki's need a passage drilled out if the oil cooler is removed.
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Y2KZX12R
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KZScott
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posted January 02, 2011 08:28 PM
i got 3 used pistons from OSR. im pretty sure 1 has a toasted pin bore but im unsure about the other 2....
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
gs11ezrydr
Novice Class
Posts: 34
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posted January 02, 2011 08:47 PM
Since you mentioned a toasted pin bore.Have you or anyone else seen or have used CP pistons? I was inspecting some the other day for the first time and noticed they have two small holes bored from the inside of the oil ring groove on each side leading to the wrist pin bores.Seems like a good idea to me. Besides having some wild ring shapes don't know about those yet.Any thoughts about the extra oiling of the pin bores?
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KZScott
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posted January 02, 2011 09:17 PM
I havent used(or held) any yet, but i hear great things. these are JEs and only have 1 hole from the oil ring to the pin bore. they had massive contact with valves though.... which is why i only got 3
fyi OSR wasent even sure if these were any good and hasnt even got me to pay yet... good guys.
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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