Im looking to bore my 08 zx14. Im new to this all and some advice would be really appreciated. As we all know the 08 zx14 is 1352cc,I'd like to bore it over a tad bit. I seen some bore kits online that include gaskets, pistons, and rings. But would that be all that I'd need? I DEFINITELY DONT WANT A BIG BORE KIT, so therefore if I blow the motor it could still have some use.

You will need to bore out the cylinders (if you blow engine you cant just go back to stock), new pistons, head gasket, rings, . Not sure if you will need to do any head work.

For the $$$ boring it out a "tiny" bit wont really be that cost effective. You can do other performance mods with gains for less cost.

Flash
Sprockets
Lighter wheels
Nitrous, small shot
Sell and buy a 14r, lol

* Last updated by: Fazer on 1/18/2015 @ 11:08 AM *

^^Sell and buy a 14r, lol^^
All kidding aside that's probably the smartest thing you can do.

* Last updated by: wfozx14 on 1/18/2015 @ 12:44 PM *

What are your goals for the bike? ET? MPH? Box full of receipts?

But boring it over to a 1450/1451, wouldn't it run similar to the newer 14r's?

I would think it would make similar hp but you would have a lot more heat. The Gen2 14r has a larger engine case to accommodate the larger bore. Looked to me like it has a larger radiator too.

14r is a stroker motor. Bore is the same.

I slung a rod out this past weekend and was wondering if I should rebuild the motor and bore it since the engine would be coming out. If I bore the engine I was looking at Wossner's piston kit. Ive heard of the overheating issues, but couldn't you run two fans instead of one? Is there a hook up for that? I have my eyes set on an 09 motor, is there any differences (torque/hp) than the 08 engine?

I slung the dang thing up. I'm going to add up a 700 dollar pissaway kit + a nikasil finish = Over a 1000+.
I got a gen1 first model and I found a salvaged low mile 2010 engine for 500 bucks.
I like reaching around and I'd drop you in some soup you, you pond scum.
I knew you were that 'what in the fuck were you thinking' about here is 500 extra we listen to Faz and pick from that list...

Signed,
Soups Ready!

* Last updated by: Hub on 1/21/2015 @ 1:16 PM *

1st off... Sorry to hear of your situation

2nd... Welcome to the rebuild sandwich club.

If you threw a rod, i would wonder how the crank and rods look? Hopefully still within spec/not damaged.

Pistons will run you 600-700, rods 800-1000, bore 800-1000, bearings at 300, plus all the labour. and thats if your crank is still usable.

Id consider a stock engine swap or 14r engine swap. Probably the cheaper/less headache route.

either way... Prepare to open your wallet.

* Last updated by: Fazer on 1/21/2015 @ 3:19 PM *

Buy a low mile bone stock first gen engine, send to X builder for head and cam package, obtain tune, and be done with the thing. Again I will ask what are your goals for this bike? Drag strip King? Sidewalk sissy? Roll-on queen? "Hey man I gotsa a big 'ole motor in dat thing and ewwwwww weee its fast!"

Why isnt it dragstrip sissy, sidewalk queen, roll on king?

Maverick1441
What is the difference between the 06/07 model engine than the gen2? Also this will be done for drag strip. I haven't been able to get the engine cracked into yet, so I don't know exactly what parts are damaged. All I know is on the bottom left side near the starter what I believe is the rod is slightly sticking out. A guy who works on motorcycles told me that could be probably be welded

You might be the first to know, but there was a frame change and I have no clue if the R case grew a few mm just to not fit as well as a 1st gen would.

The industry has changed as in one piston and no size up, if 1) it's very easy to run past 100,000 miles on the engine. 2) These bikes are now throwaways. Parts will go by the wayside as you can see how hard it is finding a few major parts for a zx12.

Rather, use that bore money towards a new model. Again, holding on to a spent motor and finding a low miler 1st gen is money well spent and ride it till it breaks or wears out; whichever comes first. That bore move begins to add up as you are assuming the engine is not that badly damaged and now just to repair that bottom end is twice as much as the top end or the set of pistons is a 1000. The new plating is for argument sake 1000. the bottom end took out the crank and rods say 2000. Say any machining, gaskets, welding, this or that running around wasting gas is 1000 that starts it back up. So 5k is a conservative guess you found your goal and that overheating issue don't forget with those fancy pistons.

Piss all that money away and you're as fast as the slowest last model. You could have sold a good running bike with a used engine that didn't break. You cracked the piggy and now sit on the world's fastest. Time flies and you bought 5k worth of backwards more or less.

Signed,
NOLTT

Roll racing takes zero skill. That's why they wear the dainty crown.

To OP: What are your ET goals? I can help you decide how much horsepower you need to achieve those goals. If you only want to go high 8s then all you need is a stock 1st gen motor.

* Last updated by: maverick1441 on 1/22/2015 @ 5:54 AM *

Maverick1441
I would like to have the bike running high 8's. Let me get this right, gen1 06/07, gen2 08/11, and gen3 12/&up. I know the differences of the 08/&up model are that the flies open up earlier but who cares whenever you can take them out. Do you get more HP with the 06/07 engine? I have my eyes set on buying this 09 motor but if you are saying gen1 motors are better than I'll open the wallet and replace the engine with either an 06/07 motor.

06-07 is pretty much the same engine as the 08-11. I believe the clutch basket is not interchangable between the 06/07 and 08-11 (ie a 08 clutch must pair with a 08-11 crank.... You cant have an 06 crank and 08-11 clutch). The 06/07 had larger injectors, which you would want to reuse anyways since you will be keeping your ecu. Whether the larger injectors are better/worse is up for debate.

* Last updated by: Fazer on 1/22/2015 @ 8:56 AM *

The 2012 and up is the Gen2. There aren't enough differences between the 06-2011 to designate a gen designation. High 8s are achievable with a stock Gen 1 motor and an average rider. Forget the bore.

Maverick1441
Thanks for the advice man. Guys like you make this site very helpful. I appreciate it

The Gen2 14r has a larger engine case to accommodate the larger bore. Looked to me like it has a larger radiator too.

14r is a stroker motor. Bore is the same.

The Gen2 engine case is different than the Gen1's, though. No doubt there are some heat dispensation factors that were addressed when they made the new engine. I doubt all they had to do to keep heat under control was ad a second fan.

4mm of stroke to be exact.

well why bore a gen1? isn't there room for a rod that's 2mm longer?

Yes. There were 1441 ZX14s running around long before the R hit the scene.

well that's what I will do someday when I don't care about heat. It will be a Spring and fall bike someday.