wrongway
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posted November 29, 2011 05:43 AM
Wossner pistons
The JE pistons I had used on the first build had cracks in wrist pin bosses and around the skirt. I started checking into getting another set of stroker pistons. First I called JE and asked them for their opinion on what caused the cracks to make sure that would not be an issue in the future. I emailed them some pics and they said that they had no clue... maybe I was using too much nitrous? they also had no engineering on the pistons they had made for Muzzy, even though there is a job number on the piston. But for $850 they could make a custom set. Since they could not explain the cracks , I wasn't feeling too good about getting more of the same .
I did talk to Wiseco , but they want to make a minimum of 20 pistons .
Wossner was great about making a custom set for around $650. Their original drawing had the top ring 1 mm lower than the JE had. Since there was no evidence of problems with the ring location , they thought that it would be safe with more nitrous... I wanted the ring further down and they had no problem redoing the drawing and using a rail support for the oil ring ... Now this was looking more like my race car stuff :-)
Wossner did a great job at answering technical questions and getting the part made. I am hoping to use the same design to build a 5 mm stroker for the gen 2 motor.
1627 cc with a +5mm and +2mm bore .... now thats gonna make 1650 cc class a little more competitive.
Roy
  
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Y2KZX12R
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posted November 29, 2011 06:49 AM
Roy, I dont think you will be able to stroke the engine +5mm when its already +4mm.
The clutch basket is already machined down in that area for rod bolt clearance.
We will know for sure soon.
Wossner rods and pistons are nice stuff.
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1badzx12r
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posted November 29, 2011 06:55 AM
 Edited By: 1badzx12r on 29 Nov 2011 14:55
quote:
Wossner rods and pistons are nice stuff.
i have called several times over the last year ..have they release rods for a zx14..
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wrongway
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posted November 29, 2011 07:12 AM
quote:
Roy, I dont think you will be able to stroke the engine +5mm when its already +4mm.
The clutch basket is already machined down in that area for rod bolt clearance.
We will know for sure soon.
Wossner rods and pistons are nice stuff.[/quote
shit ... more custom work ... maybe a smaller pin size for the crank, and aftermarket rods ?
Roy
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Y2KZX12R
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posted November 29, 2011 10:58 AM
I was working with John Noonan earlier this year on the Wossner rods for the zx14. I made some changes to the engineering drawings for clearance and they were moving along on the project.
I haven't talked to John in a while now, so I'm not sure where there at.
Roy, on the carrillo's with a 4 or 5 mm stroke crank you need to grind quite a bit off of the head of the #4 bolt to clear the clutch basket. And that was with a 66 mm stroke.
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wrongway
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posted November 29, 2011 12:23 PM
quote:
I was working with John Noonan earlier this year on the Wossner rods for the zx14. I made some changes to the engineering drawings for clearance and they were moving along on the project.
I haven't talked to John in a while now, so I'm not sure where there at.
Roy, on the carrillo's with a 4 or 5 mm stroke crank you need to grind quite a bit off of the head of the #4 bolt to clear the clutch basket. And that was with a 66 mm stroke.
I didnt have to grind anything when I used the Falicon Rods
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KZScott
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posted November 29, 2011 01:15 PM
the 14 uses a 20mm pin correct?
my new MTC pistons (Muzzy turbo spec) have 18mm pins
pics here http://www.bikeland.org/board/viewthread.php?FID=13&TID=64576&set_time=
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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 November 29, 2011 02:45 PM
I'm running 18mm pins also.
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wrongway
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Posts: 1078
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posted November 30, 2011 04:54 AM
quote:
I was working with John Noonan earlier this year on the Wossner rods for the zx14. I made some changes to the engineering drawings for clearance and they were moving along on the project.
I haven't talked to John in a while now, so I'm not sure where there at.
Roy, on the carrillo's with a 4 or 5 mm stroke crank you need to grind quite a bit off of the head of the #4 bolt to clear the clutch basket. And that was with a 66 mm stroke.
Just a guess here .. but with the stock rod setup I would think that even more clearance was needed because of the nut on the rod bolt.... so maybe they used a smaller clutch basket or the moved the clutch back by 2 mm?
And if the stock type rods clear I bet I can still get a 5 mm stroker in there
Roy
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Y2KZX12R
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posted November 30, 2011 07:53 AM
Here's 2 pics of the basket.
They machined a grove in it to clear the rod bolt. I highly doubt they changed the center-line locations of the crank and input shaft. But i suppose its possible.
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kawpower
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posted November 30, 2011 01:56 PM
That basket really looks weak now!
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Cecil County 2010 Motorcycle ET Champ. 9 Wins- 4 RUs .06zx14 turboed for 2012 .
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Oz Booster
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Posts: 230
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posted November 30, 2011 01:58 PM
Needs a basket shaped like the gsxr 1000 , stepped for clearance and the plates further out
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