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BIKELAND > FORUMS > DRAGBIKE ZONE.com > Thread: project 2 revisited (dads bike), bigger and badder :D NEW TOPIC NEW POLL POST REPLY
KZScott


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posted January 14, 2009 04:41 PM        
project 2 revisited (dads bike), bigger and badder :D

rebuild time for dads motor. still need a few things, but im getting a few things done so they are out of the way. the original head needs major repair so we opted to get a used one (long story) but it needs a bit of work, so I used mine in tonights mock up. using 3 "old" pistons purchased from 1290NOS when he parted his bike, and one new one. the motor has been punched out to 1287cc (commonly refered to as a 1290 kit) and the pistons are prepped for nitrous. the old ones were allready done and just needed cleaning, but i had to remove some material from the new one. the thin piece of material by the valve pockets has been ground down and all sharp edges have been rounded to prevent hot spots for safer running.



the bottom end of the motor checked out so i decided to check squish. knowing that the block had been surfaced, and Lee told me they would have to remove quite a bit, i decided to take a wild guess and go with 2 base gaskets (a stainless steel shim with a silicone like coating) and see where that ended up. one was in the motor last yr, and i removed mine from my motor(to tighten up squish), so i had a spare for free i used my used cometic 1287 headgasket (from my motor) as it will be getting a new one the same thickness on final assembly. using the crushed solder way to measure squish Karl taught me last yr





#1
F .04030 B .04425 AV .042275
L .04925 R .04070 AV .044975
Total AV #1 .0436

#2
F .04340 B .04075 AV .042075
L .04545 R .04615 AV .04580
Total AV #2 .0439

#3
F .04095 B .04100 AV .040975
L .04450 R .04495 AV .044725
Total AV #3 .0428

#4
F .03895 B .04825 AV .04360
L .04260 R .04820 AV .04540
Total AV #4 .0445


looks like my guess for 2 base gaskets was a good one. I wanted squish to be .040-.045 on this build

____________
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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tcchin


Zone Head
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posted January 14, 2009 04:51 PM        
Nice!
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entropy


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posted January 14, 2009 05:22 PM        
scott, nice pix!

Suggestion: next time you go squishin', place the F-B solder closer to the bore, you can get the entire piece squished.
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KZScott


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posted January 14, 2009 05:42 PM        Edited By: KZScott on 15 Jan 2009 08:50
thx guys, yeah i misjudged how big the quench pads (i think thats the name) are in the head, and didnt get a full crush. nearly missed #4 F as you can tell by the noticable piston rock(easier to crush a short piece than a long piece) . ill be placing the solder closer to the bore on later squishin' escapades. the L R ones didnt get crushed much either, but enough to fit in the mic. I dont even know how one would check L R on a stock bore 12? gets real easy with your 87mm bore eh Karl?

something i forgot to mention. damn its nice having a flat oil pan to work with! no blocks under the motor or any of that bs. nice solid base
____________
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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entropy


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Posts: 8671
posted January 14, 2009 08:13 PM        
L-R is a bit problematic on the offset block, but it is possible.

You really only need to get 1 cyl Q right if you are running Q= 40-ish and generous PTV, but i like to get all 4 and i like to see results which are predictable to .001" cause i run such tight clearances.

Yes indeed on the flat pan making bench building MUCH easier!!
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Y2KZX12R


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posted January 14, 2009 09:33 PM        
Nice job Scott !

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NOX


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posted January 15, 2009 12:03 AM        
Scott, when you get close to getting it to the track, let me know, and I will let you know if the lock up tune needs any change........, the arms will be fine just like yours........
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woppi


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posted January 15, 2009 12:16 AM        



woppi
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KZScott


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posted January 15, 2009 03:18 AM        
will do Doc. we are changing the gearing a bit too so it has enough gear for a hit of giggle juice going from 16 56 to 17 56 (have an 18 if we need it). dads weight goal is also 235 unsuited vs 240 from last yr. we have the MTC springs to play with too that werent it it last yr. he wants it setup to run as a 5 speed on motor and a 6 speed on spray. with the wheelie bars, i think we can activate the dry shot right out of the hole. it takes a "second" to fully come on as it sprays in the ram air tubes for a "progressive like" hit. ET prediction with a 50 shot??
____________
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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KZScott


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posted January 15, 2009 03:27 AM        
quote:
L-R is a bit problematic on the offset block, but it is possible.

You really only need to get 1 cyl Q right if you are running Q= 40-ish and generous PTV, but i like to get all 4 and i like to see results which are predictable to .001" cause i run such tight clearances.

Yes indeed on the flat pan making bench building MUCH easier!!


I guess I forgot about the head not being offset. i was thinking of the extra .5m on each side of the bore. I guess a SBM 87mm bore would be easier

I wanted to be sure on all 4 as 2 of the rods were resized last yr. I wasnt sure how much that was going to impact everything.
____________
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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KZScott


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posted January 15, 2009 03:38 PM        
tonight I started working on the used stock head from JACKSHOW. I believe hes finally shipping the cam cap, so Im going to give the head a light porting/port match, some c chamber work, and thorough cleaning(lots of work ahead). took all the valves out, and started letting aluminum dust fly
not so nice background..


ports are a bit rough in stock form


one CC just about done

____________
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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NOX


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PMRA / TMRC Super Street 4022
Posts: 3745
posted January 15, 2009 03:46 PM        
thats cool, I ran that gear ratio as well with bars, have a set up for that as well..........

Actually, it was 16/52, close enough.


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21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
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KZScott


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posted January 15, 2009 04:26 PM        Edited By: KZScott on 16 Jan 2009 07:30
cool, i have an idea of what to try, but ill be giving you a call when its ready to go. 3.29 vs 3.25 pretty close gear ratio, but heavier driver and hopefully more power

btw i forgot to mention, speaking of cool....this is definately a winter project! for the usa guys, tonights temp was minus 36F not including wind chill...brrrr
____________
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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KZScott


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posted January 17, 2009 03:53 PM        
another chilly night, minus 35 and it will keep getting colder till the sun peaks out. got some more progress done to the head. this is my 3rd go at doing a clean up/port match on a head, and the second one ive done CC mods to so im getting a bit faster i finished the combustion chambers, and got most of the first exh port done. the port really narrows in to match the restrictive stock header, but im opening it up to match the Muzzy sidewinder(id matches the id of the exh gasket). we dont like restrictions






____________
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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KZScott


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posted February 17, 2009 02:14 PM        
Im waiting for my 38x12.5in tires to be mounted on the new rims for my Dakota (need to get the big boys back so i can cut fenders and finish up body work, so i had some time to get back to the bikes.

I finished up the porting, and tried my hand at lapping the head as per DragBike Zone guru(s) advice . i used a piece of 1/2 in lexan, wet dry sand papaer (600, then 400, then 600 again) oiled with WD-40. i tried the finer grit first instead of starting right off the bat with 400 as 600 was less likely to fukk things up on my first attempt. once i got a feel for it i switched to 400, then finished with 600.
Im still concearned with with the HG sealing though. there is a scratch/gouge from a smashed bucket (8 of 16 survived the trip)that happened during the shipping process that wasnt removed by the lapping so it may need to be surfaced anyway??
your opinions?


i also fixed the smashed corner. when i tried to bend it back to where it was supposed to be it broke off in 2 pieces. i would have prefered to have it tigged, but i used JB Weld and then shaped it a bit with the dremmel. it should look ok when painted






____________
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

  Ignore this member   
entropy


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Posts: 8671
posted February 17, 2009 07:55 PM        
cool pix!

i wouldn't worry about that scratch, nope.
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KZScott


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posted February 18, 2009 01:36 AM        
really? you can feel it with your finger. im worried it wont seal when we try nitrous(50-55 hp dry).
____________
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

  Ignore this member   
NOX


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Posts: 3745
posted February 18, 2009 01:38 AM        
adds character......
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2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
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Conway Cycle
Syed Leathers

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NINJA12


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posted February 18, 2009 02:48 AM        
If you get pressure over to the scratch, the head gasket already let go.
Copper coat the head if you're worried. I wouldn't worry at all.

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KZScott


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posted February 18, 2009 12:11 PM        
well its a 3mm bore so its closer to the scratch than normal, but if you guys think its fine we will try it as is. maybe try the copper coat....
____________
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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brickman


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posted February 18, 2009 10:45 PM        
i would copper coat it and have no worry's. like stated before by the time that could give you any trouble your hg would already be toast.imo
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brickman


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posted February 18, 2009 10:50 PM        
by the way you don't happen to have a extra 1287 piston that you would be welling to sell? it would be much appreciated.
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brickman


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posted February 18, 2009 10:55 PM        
and if you knead a cam cap just let me know. or a few buckets
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entropy


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posted February 19, 2009 02:53 AM        
quote:
and if you knead a cam cap just let me know. or a few buckets


thats a generous offer, but the head & cam cap are line bored as a unit.

i probably wouldn't "mix & match"
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ZRXDean


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posted February 19, 2009 03:44 AM        
Nice work Scott.
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BIKELAND > FORUMS > DRAGBIKE ZONE.com > Thread: project 2 revisited (dads bike), bigger and badder :D NEW TOPIC NEW POLL POST REPLY

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