I have come into the situation of having to rebuild my motor. Of coarse I'm gonna remove the flies and I was looking at the 1451 kit from muzzy anyone had any expreience with this kit. Over heating problems? I know it should raise the power across the board but I'm just worried about the heat problem it gets to 110 degrees here sometimes. Any other pros and cons to doing this that anyone can suggest. All I have is a leo full exhaust and a bmc street filter. I looking at going to a 43 rear sprocket and speedohealer for the adjustment. Thanks for the help guys, I love this forum!

Click Here,Bill explains

It is one thing to install a turbo and something entirely different to remove the crank, and heads, and pistons, then bore the cylinders, then put it all back with new pistons, bears, bolts, etc.

I am a machinist, and I could not do it in my own garage, even back when I had a Bridgeport mill and an engine lathe in said garage.

If one of the cylinder bores is so much as 1/10th (.0001) inch off, you've got a handgrenade, not a motorcycle engine.

Get someone with cylinder boring machines and real engine building experience to do it for you, or you'll be sorry you didn't and throw a lot of money down the drain.

Of course, you might be a master mechanic with engine school and a full engine shop in your garage, in which case, go for it!

Yeah, Privateer, I agree with you. I had a Yamaha XS 1100 years ago that was converted to chain drive from shaft drive and it had 33mm Mikuni smooth bore carbs, an 1196cc Wiseco kit, different rear shocks and it was an absolute ballache. The conversion was done by Yamaha South Africa and I bought it new from a Yamaha dealer with a full warranty, but never again. Endless problems with the chain conversion and it just wasn't worth the extra power and "handling" that I got. For a hassle free ride, keep it pretty standard. My opinion, through bitter experience.

Don't Click Here. Ok, If You Will So Will I.

Romans, I am still a believer of no open engine to go faster. Just extra hassles, IMO. Looks good, though!

Engines are beautiful. If you know what you are doing.

I helped do the modifications on my Z1 when I was drag racing for Phoenix City Kawasaki decades ago. The work was done in an automotive shop. I don't mean some Sunoco, it was a full engine and transmission shop, with boring and grinding machines.

That engine was complicated enough, but compared to the ZX14 engine, it was a tonka toy. We had it apart and bored and lapped in one day, and put it together the next. That Z1 ran high 9's bud. In 1975. All due to being punched out to 1083 cc, stroked, and given a valve train and cams up to the task.

Funny thing is, megaphone exhaust, rearsets, clipons and all, I rode that Z1 on Columbus GA and Ft. Benning roads and never once got stopped. It remained street legal. Sort of....

So to the original question, yes, it takes engine upgrades like Muzzy, Carpenter, Jones, and some others sell to get big horsepower. And yes, you have to send your engine out to have it done unless you work at one of those engine builders.

Looks good, though!

Harley, I tooo have realy tried to ignore the links like the one above, but as the stock litre bikes become faster & faster the temptation grows stronger & stronger. My riding buddy has already fallen 4 Mr Garrett and when he goes by me with his back tire spinning my heart aches. I don't mind being passed by a little, but when I'm being blown away I almost puke in my helmet(don't tell him, shhhhhhh). This way is also much cheaper than a new bike.

215 hp with all the bottom end still intact would be sweeeeet. Maybe I'm gone before he spools up, hmmmmm.

215 from the 14 motor with a stock bottom end should not be to much to ask 4. If the guys are shocking the bottoms with 270hp Turbos, the kit above sounds safe. Whatcha think ?

I know don't go into the light lol.

Romans, can you imagine blowing by some guy on his new 180hp beemer on your hopped up ZX ( PRICELESS !!!!! )

Romans, can you imagine blowing by some guy on his new 180hp beemer on your hopped up ZX ( PRICELESS !!!!! )

If I could out power him every where, now that would be SWEET. I don't always need the handling, but the power on tap,,,,,,, Me NEEEEEDS. Prob is, you need some serious hp to make up for their light weight.

Easier to get a litre bike. New 2011 zx-10 4 those days. Then I woke up lol.

With the power output of 174HP at the rear wheel, as stated by cycleworld magazine on their dyno, the 215HP kit for the ZX14 would give you a 40HP advantage over the beemer. Would this be enough to offset the weight advantage ? HMMMMM ??? I AM JONESIN TO FIND OUT WOOHOOOO!!!!!! CAN YOU SAY LAND ROCKET!!!!!. Also you would be in ultamate stealth mode with no tell tale turbo whine or dead give away mechanical pieces showing. For $4300.00 I would still have less money in my bike including purchase price...SOMEBODY PLEASE STOP ME BEFORE I DO SOMETHING BADDDDD!!!!

For $4300.00 I would still have less money in my bike including purchase price...SOMEBODY PLEASE STOP ME BEFORE I DO SOMETHING BADDDDD!!!!

don't,,,,, DO IT DO IT DO IT DO IT DO IT DO IT. Your going to love it. I'm glad you don't live close to me. If you jumped of the bridge I'm pretty dame sure I would follow.

Privateer said QUOTE
>[i}Engines are beautiful. If you know what you are doing.
>SNIP
>So to the original question, yes, it takes engine upgrades like Muzzy, Carpenter, Jones, and some others sell to >get big horsepower. And yes, you have to send your engine out to have it done unless you work at one of those >engine builders.[i]
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I remember building up Kawasaki 900/1000 drag bikes engines in the 70's as well, blowing them up, and doing it again, and again..... with big power, had to sacrifice the cranks pretty much, had to weld them solid to keep them from twisting. Street riding those bikes was hilarious, lots of power, twisty frames, no brakes to speak of...

I still build big power (relatively) vintage bike motors, mainly air cooled Laverda triples with big bore custom liners, custom pistons from J&E or Ross, custom cams ground in the U.K., custom Carillo rods, carb conversions to Mikuni flat slides, ceramic coating of piston tops/valve faces/exhaust tracts, low friction coatings of basically everything else that moves in the engine, etc. I send all the machining and coating out to be done to highlky qualified people I have had good previous experience with, but I do all the engine assembly and set up myself.

I have been wondering about a big bore ZX 14 build, Send the head and intakes to someone who knows what they are doing for the machine and porting work, send the bores and whatever piston kit to someone who knows what they are doing for overboring/clearancing, then assemble the engine myself, degree in the cams, etc. Is a ZX 14 really all that much nmore complicated than a 70's Kawasaki 4? I fully agree not to attempt the machine work itself, but I am usually happier if I do engine assembly myself so I know what is in the engine and flailing madly between my legs, not worrying about whether someone else properly torqued the rod bolts, if any.......

so, is assembly only of a ZX 14 engine really that complicated, and does it really need to be left to the pros...??

Paul

* Last updated by: laverda1200 on 9/10/2010 @ 3:49 PM *

Based on what I can see in the shop manual (yes, I have the big two NYC yellow pages size book) the ZX14 engine is fairly complex. It has a multitude of bolts and nuts, and very critical torgue ranges. And the case is actually a pretty soft aluminum, so tiny beam torque wrenches of several ranges are needed.

Frankly, I wouldn't want to work on mine. Even if I had access to cylinder boring machines again.

So if I was gonna do it, I'd let Carpenter or Muzzy supply the parts and do the work.