Intake cam spec for the 2011 ZX-10r Gen 4

Stock: 10.3mm lift, 296 dur

This is even better then the web cam you posted.

No wonder you are a big fan of the 2011 and newer ZX-10 motors. Its all in the cams and compression. This is were they are getting there big HP gains from. I have not done the research to see what the PCV and CC volume is on this motor but I bet its a far cry from the the Gen 3 motors.

Mark

You just must be the brightest bulb in the box.

I even liked the 2004-2005 Gen I zx10r's they were the rocket ship back then, go figure.

You aught to see the specs on Kaw's kit race cam!!!!
I guess that is why they just keep on making more Horsepower year after year. That is how they sell more bikes.

Instead of Gen IV I prefer to call them Big Cam Motors. The intake cam in order to get these numbers is physically larger than the old cams, and to compensate for the larger cam the lifter buckets are also larger.

An interesting note the exhaust cam did not change much basically they moved the old intake over to the exhaust side.

Comp ratio 13.1 to 1 v 12.7 to 1. Wow I can see a relationship going on there.

Mo Hp>> Mo HP>> Mo HP>> However Mo is not always better>

You are wasting you time on cc and pvc.... Cut a head into and you might learn something.

Honest Dad himself

So are all the clubs still sticking with the 4 major manufacture rule? Another words not allowing the BMW? I Need to know!

Mini

Just what we need!!! Somebody else stirring up the pot. You sure don't need that old BMW motor. It would have to be the MOTOR instead of the driver and setup RIGHT. You know what I mean.

I like the idea of BMW, I even like the idea of Ecotec, If you are not improving you are probably dying. It is a shame some people get their panties in a wad over something that should be an improvement. If we can't find enough motors what do we do. I can get a pretty good deal on a 1974 750 Honda.

Honest Dad himself

how much would these ecotech or BMW's be?

Hos

The BMW is going to cost about the same as any late model 1000cc bike motor. You want to make sure you get the whole car kit to include the ign switch and key. The electronics is even more complicated that the zx10r. I understand they might be just a tad short lived also.

The ecotec would best be bought as a used race car, let somebody take the loss on new driveline components. The ecotec motor itself is $400.00 at your local junk yard. there are literally millions of them out there. Almost all of the expensive special race add on parts are reusable, so could be expensed out over several seasons of racing. Sounds PRETTY GOOD to me.

Honest Dad himself

This pre conceived notion that 2010 and older motors are becoming harder to find is false. Ask Andy Bradley, go to the Dwarf car forum or ebay. They can get you any motor you like. The motors that are hard to find and are expensive are the 2011 and new motors like the BMW and the ZX-10.

Bill you have all these answers to fix our sport. Why dont you start DAD's fix all mini, midget, DD2 no muff to tough club? Problem solved

I don't have a cat in this pussycat fight!

-You can find the older motors but they will have more miles.

-To my knowledge the old rules a long time ago were Japanese production bikes only...

- personally I could care less about the BMW.

-personally I could care less about the new zx10.

- all I do care about is preserving the sport.

- remember perception is reality, if you want a 25-35k race car the midget or sprints may be more your fancy.

Happy Thanksgiving and carry on..
Or
As some of you do
Carry on, and on, and on...

Mark

You just might have a good idea. If I could come up with a good crew I might buy one of those groups. I would have to talk Doug into retiring, because as I have said to own a group and to race in it your self or have family racing is not a good idea. That does however sound kinda of neat.

You on the other hand are already helping to run a group of racers and have your own website http://midwestlightningsprints.freeforums.org/ It appears to need a bit of work put into it. The readership and posts and responses seem to be a bit low. You should work on that a little more. Looked pretty good a few months ago, but things sometimes do fall off.

Maybe you need to spend a little more time over there building it up.

Old motors are available but as Andy said they have a bunch of miles on them. I guess the zx10r was a great motor when you bought yours and it was probably the best thing out there in your opinion. Well all most things evolve. Your Lightning Sprints started out as "MINI-SPRINTS". There were powered by old motorcycle engines from 500cc up to 1200cc and may be a few snow mobile motors thrown in there for good measure. Today we call them "BOAT ANCHORS" That is because we have evolved.

Now if somebody doesn't like the newer motors they come up with a real neat rule (nobody has ever done this before) that states the only engine allowed must be at least 2 years old to race in our group. These darned things do not have a date of mfg. stamped on the cylinder block, so you got to guess what year it is. The mfgs also build them in series or Generations lasting from 2 to about 4 years in length.

What this rule really means is that the only way to get a low mile motor we must buy the new motor when it comes out with low miles on it and keep it in dry dock for 2 years until it becomes legal.

Now that is a cost saver.

Mini wants to try a BMW that's great. I want to try a newer Kaw. that's great. I might want to follow in the steps of the FLORIDA GUY's and try an Echotec, thats great. Andy wants to try an ENGLER he does not care about what motor he puts it on but he wants to try an Engler. That's great
.
Some racers sits around with a chromed up decaled up no go show boat. That stuff is his deal also and that is great. You can't race these things on food stamps that is unless we have a lucrative non taxable business going on down on the corner.

The deal some people have with decals I may have with dry sumps and Andy may have with Engler fuel injections, SO.

We all stated we wanted stock internals, well I put forth a little effort and said yeh with this stuff here we can enforce this rule with very little time spent after the race in the tec chute. And instead of a hundred dollar piece of aluminum with a dial indicator in it' I use a $35.00 Harbor freight 12" caliper. Then somebody harps in about doing research in cc's and ptv measurements.

Several of my suggestions have somehow found a home in tec procedures as long as the powers that be can think that they were actually there ideas all along. That's great.

I am putting forth suggestions. You can read them and agree with them or not agree them, like Andy said "Frankly my dear I don't give a tinkers Darned".

Nothing like a good foil to keep things going and we are sure doing that aren't we. I just kinda of hope a little of this stuff does sink in.

Be prepared to EVOLVE

Honest Dad himself


Then Mark come up with "Well those 2011 zx10r's and BMW's have too much horsepower!! Well young man times are a changin.

Honest Dad himself

Dad, I couldn't have said it any better! Spending $2,500 or even $3,000 on a newer engine with a 1000 miles on it will cost a lot less then spending $1,500 on a older engine that has over 10,000 miles on it and then have to put bearings, rings, valve job and labor. My opinion is once you split the cases that engine will be a grenade waiting to explode! Just my 2 cents. Happy Thanksgiving everyone!