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A twin sounds like a big block.
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Heres a condom. I figured since youre acting like a dick, you should dress like one too.
How the heck did I keep my mouth shut so long? I completely missed this thread.
V-twin? HA! L-twins is where it is at!!
I just have to say I have ridden with many people who were on I-4's while I was on my lil 750 L-Twin and I had NO problems keeping up. Sure they squirted ahead on the straights but I would suck em back up in the corners.
I love Torque and the sound my twin makes. I-4 sound like bumble bees in a can.
I had a ZX-7 (my only "real" I-4) I liked it but it just wasn't the same.
BTW there is NO way that an I-4's pistons are bigger than a twin's Takes 4 of them to make the same CC's as 2 on the twin.
"I'd rather ride a slow bike fast than a fast bike slow"
Bikes: Ducati: 748 (Track) Honda: RC31 (Race/street)/ CRF 110 Mini Moto/ Hawk Endurance Racer Kawasaki: ZXR1200R
BOMO Instructor
EX# X
Be careful when you guess piston size differences between engines. Besides the piston diameter, the stroke also dictates displacement. By most peoples' arguments, my SV650 should have larger pistons than my 12R because 4 SV pistons would be 1300cc's as opposed to 4 12R pistons being 1200cc's.
In actuality, the 12R's pistons are a little larger but the engine has a shorter stroke than the 650. The 12R bore/stroke is 83.0 x 55.4 where the SV is 81.0 x 62.6.
The HP and torque arguments are beaten to death. First and foremost there is no substitution for cubes. Assuming similar tuning, the bigger engine will make more torque.
V-twins typically have a longer stroke than 4's which gives them a low RPM advantage in torque generation. This longer stroke leads to higher pistion velocities which limits how fast the engine can turn which limits its top end power.. There are also usually more frictional losses in V-twins because of having four cams and heavier valves and springs (because of size).
I4 engines pretty much have the exact opposite qualities. Shorter strokes are not as good for developing low RPM torque. It does slow the piston down considerably which lets the engine spin faster without risking damage. Valves are usually lighter with lighter springs which reduces the parasitic losses in the engine further improving its torque output as RPMs increase. The smaller bores and strokes lead to smaller combustion chambers which increases the fuel burning efficiency of the engine. All of this adds to the ability of the I4 to make more torque at higher RPMs.
Horsepower is directly related to an engine's torque and speed. When you combine high torque at high RPMs, you get high horsepower which what the I4's are very good at. Moderate to high torque at moderate RPMs (relative to I4's) leads to moderate horsepower for the V-twins.
"...i would seriously bite somebody right in the balls..." -bump909
the sv and the busa have the same exact bore and stroke. so if you ever want to put hi- performance pistons in that sv, let me and we will split the cost of a busa kit
When I start my KTM in the morning, rules are broken. Its inevitable...
01 SV650S (RC51 eater)/07 690SM /03 300EXC/14 XTZ1200
TRACKS:Firebird/NHMS/VIR/Calabogie/California Speedway/NJMP/MMC/NYST/Palmer/Thompson/Club Motorsports
When I start my KTM in the morning, rules are broken. Its inevitable...
01 SV650S (RC51 eater)/07 690SM /03 300EXC/14 XTZ1200
TRACKS:Firebird/NHMS/VIR/Calabogie/California Speedway/NJMP/MMC/NYST/Palmer/Thompson/Club Motorsports
UNION just went to your tube to check out the sound on your bike nice sounding no doubt (not kissing ass here). What cans do you run?
If you cant do 200 your slow
-President andd founder of THE KRU S.B.M.C.
-a.k.a. HAMMER
Not all of em are EFI. My SuperHawk is carburated and it hickups, back fires and just runs like a shitty carb'd bike.
But it'll hang with the RC's TL's and Ducs anyday.
I was just out o my girls I-4 Honda 600rr and I really enjoy riding it. But it's also nice to get on the Superhawk, then when I'm really looking for some holiganism I swing a leg over the CRF450 that's been Mo-taahhhhhhhh ded.
KB
I have an inline 2 who do I side with?
You suck at life. Why don't you quit?
My dad told me I could be anything I wanted when I grew up. So I became an Asshole.
I can't hear my 1200 I-4. What side of this conversation should I be on?
I have 1 air cooled single, 3 water cooled singles, a water cooled twin, an air cooled I-4 and a water cooled I-4.
The KLR with the open airbox and Stage 1 jet kid sounds the most Boss bein rev'd to 7k! (seriously, BWUUUP, BWAAAAAAAP)
2021 KTM Duke 890 R
2016 BMW S1000XR
1982 Honda CB750F Super Sport
The hell it will..... but that is a different story...
Don't know about you guys on your I4's, but I make 60 ft/lbs of torque at 3,000 rpms, almost 80 at 7,800 rpm's, which is pretty close to an 1k I4, and if I get a jump on your 1k I4, you will be banging the rev limiter to catch up. My TLR will hit it's limiter at 10,500 rpm's, (ECU is not set up stock) which is good for some decent HP for a TLR. Suzuki told Yoshimura not to turn the TLR engine higher than 12k when they raced it. At this point the cases will dismantle themselves.
I don't advertise how much HP mine makes, (keeps them guessing), but there are a chosen few that have had the pleasure to give it a run. I have since turned the burner up on it again, (I was bored), and it is almost all buttoned up.
BTW, the stock bore and stroke is 98mm x 66mm, which is VERY oversquare.
I'd rather have 2 big ones, than 4 small ones....
end of rant, and yes I'm still alive and kickin'
-Pete LRRS/CCS #81 - ECK Racing, TonysTrackDays
GMD Computrack Boston | Pine Motorparts/PBE Specialists | Phoenix Graphics | Woodcraft | MTag-Pirelli | OnTrack Media
The Garage: '03 Tuono | '06 SV650
[QUOTE=TLRMan;351382]The hell it will..... but that is a different story.../QUOTE]
Bwaaaaaahhhhhhhaaaaaaaaaa Is that a challenge?
When and where. For Pinks?
KB
-Pete LRRS/CCS #81 - ECK Racing, TonysTrackDays
GMD Computrack Boston | Pine Motorparts/PBE Specialists | Phoenix Graphics | Woodcraft | MTag-Pirelli | OnTrack Media
The Garage: '03 Tuono | '06 SV650