So will that have any effect, negative or positive, on engine lifespan and is a full break in still required once this is done (I am assuming just a couple heat cycles since some of the pich is removed)?

Thanks again for taking the time to answer my questions!

what kind of performance gains can be expected from a modded ninja compared to a stock one. I have nothing but ninja parts so instead of getting the weks like i origionaly planned, i am thinking it makes more sense to get the ninja instead.

Well it all depends ! I can tolerance an engine so it needs almost zero breakin, just seat the bearings and the engine is ready to race and will perform at peak power almost immediately.....However you will see slightly less lifespan on the piston/sleeve fit before it needs a pinch.... However because there was no real pinch to begin with the engines internals will stay in near perfect condition...no stress on the rod, no stress on the bearings and no wasting 2 gallons of fuel waiting for the engine to hit prime.....So just a repinch and the engine is like new again....Many people are willing to sacrifice a tiny bit of lifespan to avoid all the hassles of breakin.... And with the modern pinching tooling its really not a big deal to snug up the fitment when its time....

Now I don't lap all the engines this way, some engines come from factory with way too much pinch, and will take nearly 2 galllons to fully loosen up, and by that time the connecting rod and bearings have taken a beating, not to mention the hassles involved with trying to work with a overly tight engine...With engines like this I lap the fitment so its more user friendly, it still needs to be broken in, but we are only talking 1/2 gallon at most till the engine is at prime....This saves the user plenty of fuel and time, and still retains the original lifespan of the piston/sleeve set....

So in other words I can lap the piston/sleeve fitment to my customers request.. a looser fit will be track ready almost immediately and make full power right out of the gate, but we will lose some overall lifespan on the piston/sleeve fitment...Or I can lap the engine so its still retains some pinch, but the breakin will be greatly reduced from its original state....

So far I have sold several hundred hand lapped engines and all my customers love the way it works.... And currently we are offering this service free with all of our modified engines !

You will find more bottom end, more aggressive mid range ramp and a significant increase in peak RPM... driving both stock and modded side by side you will feel quite the difference, as well you will notice the modified version sounds quite a bit more aggressive... We have been having great results with the modified Ninja's ! they are a badass engine ! But there is a higher price tag that comes with them !!!! I will also add that runtimes have been very good with the modified version...every bit as good as stock if not better...

I will add that my JL is hand lapped. Right now I stand at about 4 gallons but all 4 gallons have been with a full on race tune. i idled one tank and cranked the needles to full power. Neal says you will probably lose some longevity but I think of it this way. 8 gallons of full race tuned usable power, or 1 gallon of break in, retune, and then 8 more gallons of full race tuned usable power. you can keep that first gallon if you ask me. I would rather throw it on the track and race it out of the damn box then sit over it with a heat gun for 1/2 gallon and then putt around the track for another half gallon following it around with my sisters blowdryer..Give me power now and keep your extra gallon or two, especially at the prices of most of Neal's engines

They are expecting shipment Wed. next week, so I will hopefully have them back in stock by Friday next week.

We have the Picco P6TH in stock and they work excellent in the Werk's engines !

For anyone curious what an engine that has been hand-lapped looks like at 2 gallons, here's a few pics of mine:

that's how i feel now. I idle for a tank or two then put the screws to it. I think the whole break in thing is a little overblown. I broke in a sleeve like this and it runs awsome. Just as good if not better then the whole "break in" technique for god knows how many tanks.

lol!!!!! seriously has this been run looks brand new hey!!!! nice work

thanks neal i tried they would only allow 2 to be ordered wen i ordered me motor thats kool next week ill order a 6 card thanks again

How much runtime are you getting out of your plugs? I've on my third one through seven gallons on my B5. I used to go burn them up every few tanks until I learned to tune a bit better.

Hi there.

I am trying to decide which engine to purchase.

I see the mods and I think Yumm. Quesitons.

1. There is a coating on the pistion. What is it (is this a factory job

or something that was done during the mod process.

2. Can I send in a brand new engine and have the mods done?? (Werks B5 or B6?)

3. If I can't get parts (Older Ninja Motor) can you??

No coating on piston....that is the factory finish

yes you can send me an engine, however it is usually cheaper and faster to just buy one of my engines, usually we ship within 24 hours

I cannot get parts for the older Ninja's

I replace my plugs at the gallon mark on any engine, not because they're done, but because I don't want one to have one go bad in the middle of the main. Changing plugs every gallon is good preventative maintenance.