CBR1000RR Turbo OR Big-Bore?

[Stillalive]

Hello, all likeminded crazy bikers.

I have the money in the my pocket and it’s burning a holeJ
I’m deciding between engine work and turbo for my CBR1000RR.
I will use it on the road 90% (weekly ride to work and canyon carving), and on the track 10% (weekend track for fun, not for racing).

Modification up to date; Full exhaust, PCIII, Carbon air-box, 520 conversion, HRC PGM.

APE Racing will charge about $4800 for this engine mod.
Engine work will include:
APE Racing will perform the work,
Weber Cams for overall performance increase,
Adjustable Cam sprockets,
JE Big-bore pistons13: 1,
Lightened crank shaft,
Ported and polished head,
Valves and springs,
Carrillo rods,
This should give me an estimated 185-190 SAE rear wheel HP.

Turbo kits range from $3500 to Fast Forward’s $6000 and the HP are 170 to 250 it seems.

I have no previous experience with 1000cc turbo bikes, but a lot of experience with modified bikes 185-200HP.
I’m going to have an aftermarket muffler on the bike.


Now to the questions!
1) What should I go with (if you have personal experience, excellent!! Just let me know what)?
2) On what set up will I run in to more engine service?
3) Will the control/handling of the bike be the same on Turbo or Engine modification (when they are at the same HP)?
3) How will the power band differ?
4) Where can I find the “best” Turbo kit with the least lag?

Thank you very much for your help!
Robert

P.S. If you would like to contact me privately or have products to sell: rarthen@yahoo.com .

[66droptop]

Turbo.


All the drivabilty of a stock bike, but once you get into the boost it's a different beast. I don't know about if you have to get the 1000 resleeved or not, but if you do, you'll have much smaller water passages which means overheating problems can arise.

[jawhn]

Turbo.


All the drivabilty of a stock bike, but once you get into the boost it's a different beast. I don't know about if you have to get the 1000 resleeved or not, but if you do, you'll have much smaller water passages which means overheating problems can arise.


66droptop (Rob) is being VERY brief here, but he's in the middle of a turbo to his bike, and has his own thread about it, with ALL SORTS of technical stuff about it that I don't understand at all, here: http://www.rrzone.com/forums/showthread.php?t=1583

[66droptop]

If you can handle 200whp bikes, then the horsepower isn't going to be a problem. Just a choice between which way you want to make your power.

I haven't gotten the turbo bike done or anything yet, so I can't say exactly what my turbo BIKE will be like mostly because I don't know what 200whp is going to be like. But turbo CARS that I've dealt with are incredible. You can have a completely streetable 800+hp vehicle that's a completely docile house cat one moment, and a man eating tiger the next. And the description I just gave isn't theoretical. It's a friend's twin turbo first generation Camaro. Last night I was in another friend's single turbo LS1 Camaro. Bone stock engine, but with a 76mm GT42 turbo. Out of the boost, it's just a simple Camaro. Floor it, and it's instantly a 550whp car pressing you into the seat. Turbochargers are the greatest invention ever when it comes to the internal combustion engine. Reharness the otherwise wasted energy and put it to work.

The other option you are looking at is to stay naturally aspirated. Big bore kits often require a resleeving of the block, and therefore smaller water passages. Keeping the bike cool can be a problem. And all the super high output, highly strung race engines I've dealt with whether they be GT4 car engines or GT2, have all made tons of power but have all been essentially ticking time bombs waiting to pop. Lots of power, difficult to maintain, and short life spans. Oh, and really expensive too.

If you were looking to build some sort of race bike (road course), I'd suggest n/a since that's probably your only available route since that is what the rules would dictate. And hopefully you'd have some sort of sponsorship to help ease the pain felt in your bank account. But you're building a street bike that will see the track occassionally. Go turbo, and enjoy the benefits of the Dr. Jekyl/Mr. Hyde personality.