Most powerful Suzuki RG500?

[rg500delta]

Yep, and that's not the end of it! 500s were a handful when tuned for max power so the focus had turned more to rideability instead of maximum output. So 190 was in a "tractable" state of tune for the factory bikes- although those are crankshaft numbers. Honda supposedly were over 200 hp while still after peak HP. The privateer ROC was listed at 175 or something (crank hp). You know, late model 250GP were supposed to be over 110 hp.

[deltaipei]

@rg500delta Exactly. The Honda 'big bangs' were devloping more than most people (and tyres) could handle (I am ex HRC), unless in qualifying. Highly tuned 2ST's have something magical about them. 500cc's trying to release 205+ horses out on the world should not be possible...but it is.

[deltaipei]

@rg500delta Exactly. The Honda 'big bangs' were developing more than most people (and tyres) could handle (I am ex HRC), unless in qualifying. Highly tuned 2ST's have something magical about them. 500cc's trying to release 205+ horses out on the world should not be possible...but it is.

[670lamborghini]

Well I've heard at the end of their time the 500GP bikes made around 190hp is this true? That's just unbelievable!!!

2STROKE 4LIFE!!!

[racer500gp]

As my screen name will testify Two strokes will RULE FOREVER !!! PERIOD.

[alpal2002]

How come the video at 4.46 doesn't show a live pic of the HP?

It has 130HP superimposed on the frame of the video.

The other tests show a live view of the Horse Power.

[rg500delta]

The guys making the video did not show the meter on every bike. I made sure to choose clips of other bikes that showed the meter, so you could see the sort of HP this dyno was recording. Mine was one where they did not show the meter... However, it ended up with 130.5 that day as seen on the leaderboard photo earlier in the video. The next day it got 132.2 as seen on the final results. And 3 weeks ago it burned up after a crash roadracing and it's in my basement in pieces now! >8-(

[alpal2002]

@rg500delta - you're right at 3.04 it shows 130.5 HP.

Sorry to hear that it crashed.

Are new parts still available for these bikes or are you

forced on to Ebay for used parts?

I think these are the best 2 strokes ever available to the public.

[rg500delta]

Well, to be honest I have very few actual RG parts left on the bike. So most of the stuff I need, I get to make again, or find other bodywork, etc. I'm motivated to fix everything that bugged me about it. you can see what it looked like, and fire photos, dang, how can I post this.... google "gamma gathering". it's the top result.... go there... and look for the link at top of page... "fire photos" I wonder if that will get through?

[alpal2002]

@rg500delta - it's good if you can get some parts or make them.

If the crank goes you'll be in trouble.

Can't find the video.

I tried "fire photos RG500" & got nothing.

[rg500delta]

try going to tiny u rl do t co m sla sh 2auqf2g

well if this works I can thank all those email spams for an education

[pitbike0908]

Isnt that what winters are for? Creating masterpieces

[rikcy92]

cambia banco prova!!!!!! ps:bella moto!

[westeh]

awesome bike , awesome output ... change that paint scheme !

[rg500delta]

@westeh funny you should say that... different body, different paint, and working on different tail and tank. pix at 3w dot gallery dot me dot com slash rg500delta slash 100148

[westeh]

@rg500delta just went and had a look WOAH !!! ... that things looks awesome ... it puts newer bikes to shame

[rg500delta]

It burned up, did you see the fire pix? google "gamma gathering". it's the top result.... go there... and look for the link at top of page... "fire photos"

gaaaak. On the other hand, I'm putting together an XR40 replica-ish thing over the winter, so we'll see what we see by Spring.

[westeh]

@rg500delta ... OH shit ! .... sorry to see that happened to the beast...will this bike be rebuilt as a XR40 Barry Sheene bike ?

[westtexasduster]

Ha! I've got that same torch, I use it to weld cracks in aircraft exhaust.

Good job with your build!

[slalomer81]

well mine friend i think for a tuned gsxr 1000cwhit only that hp is like you say BS....

i have myself a gsxr 1000 but from the year 2003....not tuned on the enigine only a other exsaust...upswept devil trophy carbon....nothing els...has beieng just a week ago on the dyno because i whas curios in how many hp i have....btw the exsaust is already from 2004 on the bike....reed thisand i can prove it whit the print out's.....MAX POWER ON THE BACK WHEEL....154.0 HP....or 181 hp on the engine

[rg500delta]

google factory pro true HP and check out the chart of true rear wheel HP (like measured in this shootout) vs manufacturer's claims or dynojet figures. GSXR1K 01-03 121 (lowest) to 129 hp (highest) same GSXR with race exhaust, 138-140 true rear wheel HP. All I'm saying is, THIS dyno at AMI measured HP similar to the chart you will find that that website. All you can do is compare bike vs bike on same dyno.

[rg500delta]

@slalomer81 BTW the GSXR 1000 that won 100cc class was the most powerful GSXR1000 to run all week. That wasn't the only guy who rolled up on a GSXR. Don't worry about the numbers, just compare bike vs bike on same dyno. Unless you have a chart from a Superflow or Factory Pro dyno, you can't compare to the guys that ran at the HP shootout. It just reads different than a Dynojet. FWIW 147 on this dyno would be apx 169 HP on a dynojet, according to the technicians. So he got ya.

[fredie464646]

very nice

[guppytuned]

Mark Dent 146hp UK

[rg500delta]

You know, Mark shipped one of his engines to the US to run against me at this very dyno shootout, but they had tech probems and were not able to make it for the competition. That motor of his is very strong, no doubt. My 132 here on Superflow would probably dyno in the 145 range on a dynojet inertial.

[rg500delta]

I know when I heard his motor run up on a different dyno earler in the week I was very worried! His 570 makes bags of torque. Unfortunately it was misfiring and even there we could not make peak power runs. He runs more compression than me and his motor is 14% bigger than mine. Still, very good chance we will shoot out this fall at Barber, his blue/ yellow monster vs the Delta on the dyno. I think it will be pretty close but not making a prediction. GHN claimed 155 from their RG-TZ.

[Supercowhawkins]

dude that bikes looks freaking sick, i never knew suzuki made a street bikes 2 stroke

[rg500delta]

They made a bunch of 2-stroke street bikes, way back in the 70s. I think after the GT series (GT380, GT550, GT750 ) they did not have a new big-bore 2T streetbike until the RG500 in 1986. The RGV250 was a big seller in europe for many years and there were many variations of that model- it was far more technologically advanced than the RG500. In the US, though, Suzuki stopped with 2 strokes a long time ago.

[Renceau]

@Supercowhawkins They never did.

[JoneZ123]

you have the greatest number plate ever :D

[box1u]

Just curious what was the stock HP on the RG500,RZ500 and the honda ns400r

[einbecker69]

RG 500= 95 HP

RZ 500= 88 HP

NS 400= 72 HP

in germany

[rg500delta]

At the rear wheel, the RG500 made about 75 HP, stock- I have dyno tests from several magazines. Although a set of pipes, air filters and rejetting can get an RG500 into the 90+ hp range without too much trouble.

[nast16]

haha yea, but they'd probably end up becoming best friends and starting a club for people with record setting stock motorcycles.

[nast16]

definitely take a two stroke over a four any day. i have a sh*t talking buddy with a kaw 636 who claimed to be going 195 mph one day, while still having a gear left to go through. he didnt think my '85 Yamaha RZ500 stood a chance. needless to say, he lost miserably. he laughed and said when i flew past him when he thought i was in the dust, he actually said "WOW" out loud in his helmet! hahaha.

[literbikedoc]

errr , ok .... your buddy should take his 636 back to Kawasaki where it will be framed in the hall of fame as the world's fastest 636!!! LOL.. A stock 85 RZ500 is good for aound 240km/hr IF the tune is perfect (whatever that is in miles) but sure aint close to 200mph!!!(322+ km/hr!!)

Still has plenty enough mumbo to shut down a 636 though!!..

[rg500delta]

I was buying parts at the shop last month, and one guy starts asking if I have a bike, and he has a Bandit 1200 in the parking lot. He then goes on to tell me his bike went 185 mph, stock, but since he "derestricted" it, it will go 204 mph. I don't even have the energy to argue with these guys anymore... I Just told him he's very lucky to have an abnormally fast Bandit 12. Maybe he should race the dude with the 196 mph 636!

[heelflip964]

nice! i was just at an auto show and some guy was showing off his boss hoss it had a 503 v8 in it i think lol. i know im compairing 2 unlike things

[dwsnare]

Ummmm Oooops, sory, the rgv is an RGV250 rolling chassis, ta.

[dwsnare]

Sheeez, pretty loud. Qwik question please. Im slotting my RG500 into a rgv chassis (keeping my old frame). Was wondering what chambers to buy that will suit the rgv framework. I was thinking of either Jollymoto or Nikons. Any wadvice would be great. Very nice machine mate, it SCREEEEMS, lol. Cheers, john (Sydney)

[trofii]

ameizing motorcikle, I like dat

[buzzy84IT]

rg500delta this bike is amazing.

Wha't king of modification have you done to reach 130 hp ?

[rg500delta]

Thanks! It uses TZ250 cylinders, via adapter plates, TZ pistons, longer con-rods, billet heads, 38 mm carbs, TZ-ish pipes and a digital ignition with a TZ-ish advance curve. So I have tried to make it into a pair of TZ250 engines. The dyno sheet is very close to 2x TZ250 but at high rpms I don't have the breathing, so when the TZ keeps going to its peak, mine flattens off- it makes about 90% of the HP of a TZ250, per cc.

[criticalmass181]

What a great bike !!!!! Nice job. I wish I never sold mine. An irreplacable gem.

[bluebearbank247]

hmm... notice on 'winner sheet'... 85 Suzuki GS1100E 217.7hp!!! I guess Suzuki did a lot right back in 1985, sorry, they still do.

[rg500delta]

There was a 240Hp V-max there one time, I don't know how he finished up, I suppose got killed by turbo bikes or something. But it was incredibly bad-ass. There were a lot of old bikes that guys had just gone crazy with- it was pretty cool to see all the hardware that came thru during a week of dyno shootout .

[LRGHMN]

Great video you had me all worked up right up to point i had to endure the sound of a v twin.

[rg500delta]

LoL. blaaaaaatttttttttttttt. Hey my RS250 is a V-twin.... !

[rg500delta]

Yeah, that's my scooter! What's sad is, I have tried all sorts of stuff to perk up my TL-S, and unlike the Gamma, it stubbornly refuses to make any more power. The RG will run again this summer with a host of new mods, trying to crack 150 on the DJ (maybe 135 on eddy current). We'll see!

[cmra484]

This randy from old TL blueboard? I remember you talking bout a hot RG, man you weren't shitting. 130 HP on eddy-current dyno is easily 145 or more on DJ. That's the strongest rg I've ever seen. Holy crap. I've got a cr500 but damn you are crazy. And only place a zx12 will show this bike it's pipe is on long, STRAIGHT road.

[BUSA666666]

a ZX12R would drag two of these rgv 500`s round a track... that ZX12R must be governed in some way to produce 144bhp

[rg500delta]

Plenty of guys just like you get off the superflow dyno and start moaning about how there must be something wrong with the dyno. LoL The number is true hp at the contact patch, not inflated dynojet hp. Believe me, I also like the big DJ numbers for my ego. Go to factory pro d-o-t com and click on "tru hp scale" to see what many other bikes read for true rear wheel hp. Check out the 'busa and ZX14 results.

[rg500delta]

I forgot one thing- don't sweat too much about the peak figure. That ZX12 made a wide plateau of power and was probably over 130 HP for a wide spread. My bike makes a much narrower spike of power. In the real world a 2 stroke with equal hp/ weight as a 4 stroke will lose in a straight up race. Think about this, though. My bike is 338 lbs with a full gas tank (200 lbs lighter than a ZX12). It will skin a ZX12 alive around a track. ;-) probably not at the strip, though. Can't launch.

[DukeandRg]

Oh Randy, what a nice bike! I love RG500s..

[TiuArTTeK]

what the fuck score is false rg 500 is 150 hp and more rapid than 4 stroke gsrx1100

the rg 500 lets the gsxr far behind him at start to fast.

pouerf...... video de merde false !

[TiuArTTeK]

yes its the most powerfull two stroke........... like moto gp two stroke is the same on road.

[bluerazors]

Great vid! The 80's kicked ass, we were free. Wish all the tree fuckers would leave the country! These days you can't even take a shit without a leftist telling how much water to flush.

Two strokes or nothing!

[omgk3lollol]

144 HP ZX-12R? 0xa0ax0axa00ax0ax0axx0a0ax0ax!­! my zx-12r is 198 hp on the weel fools!

[rg500delta]

Wow, you should have brought it to the shootout, I bet the guy with the 541 HP Hayabusa would have been really impressed!!

[rg500delta]

Although now that I think about it, 198 HP from your bike is 165 HP/ liter.. meanwhile, a 1979 Kawasaki 80cc minibike makes 15 hp... that's 187 hp/ liter. hmmm.

[fuckkkingtasty]

LMFAO

Better not tell the guy that Jack Frost has 700 HP from his Hayabusa Turbo, and that it hold the UK speed record for bikes at 257 mph.

Check out Holeshot Racing, Jack Frost is a complete madman, 700 HP is just plain silly.

Gotta love it though :)

[bayiganteng1]

a Kawasaki KRR (150cc 2-stroke) makes 30 HP on a stock engine, that's about 200 HP/liter.

With minor engine mod, bigger carb, and aftermarket exhaust pipe, you'll get 40 HP and that's 266 HP/liter. So much fun and it's a beautiful bike :D

[gcmc2]

I see you said you were initially waiting for the RZ500. I was exactly the same but lost interest when I saw the weight of them. I then waited for the Rg500 and I loved it. You talk of the cost of running them these days but they were hell of an expensive thing to run even back then. ( 23 years ago - can't believe it ) I remember paying over $600 for a new pair of front brake rotors. I did only 30mm carbs, custom chambers and counterweighting of cranks. Good for 115 hp ( and 13 mpg ! )

[mccartn3y]

name of soundtrack at 1:10 please?? thanks

2T rulzzz

[rg500delta]

"Kill Bill Theme Song" by Wu Tang Clan!

[AvgasStew]

Awesome, yeah i miss my smoker. But she blew up after 24,000k's of abuse/fun......still it was good wipe the smile off the faces of fireblade owners when suddenly saw a little 150 up their backsides at 10,000rpm. Does anyone make a 2 stroke motor that you could transplant into a frame? rather than rebuild a old bike?

[rg500delta]

check out these guys, I think this is the best option for a decent 2T engine you could put into a project bike. Better yet, check out their project bike RS500GP !

go to w w w . two strokeshop . com

[tomio145]

how often do you rebuilt, how much oil do you use...

[rg500delta]

I do run a 250cc GP bike for some racing and trackdays, so I know how often you must change parts under hard conditions. But for my 500, after it was first built I went 4500 miles before I took it apart. Leakdown was still under 4%. The pistons measured at 1/2 of tolerance after 4500 mi, so they were still OK to use. This was with numerous trackdays, maybe 500 miles on racetrack and 4000 miles on street. Based on this I would go maybe 8000 miles before crank and top end rebuild.

[rg500delta]

As for oil, for street riding I can use just the oil pump, but for track use or hard use the stock pump does not put out enough oil. For hard use or racetrack, I run 100:1 premix in the tank, plus the oil injection. When using ONLY premix (which I have done occasionally) I use 32:1 Maxima 927. That is also what I run in my RS250R. I have no idea what oil consumption is in "miles/ quart" I just don't keep track!

[SPL170db]

Nice work, but a 500cc 4-cylinder TWO stroke compared to a 600cc 4-cylinder FOUR stroke is not exactly an apples to apples comparison as I'm sure you must know.

[rg500delta]

I guess so... but it was a 20 year old, 500cc 2-stroke vs 2006 600 and 750cc cc 4-strokes! Even with the cylinder upgrades, I am running 1994 parts on my 500. There's something to be said for development on these modern bikes- I can only do 12,000 rpm vs what, 16-17,000 rpm on the 600s? The last time I ran it was in the 750cc class (and still won). 20 years newer and 50% displacement is a hefty handicap. Can you imagine if Suzuki had been developing the RG500 ever since 1986!

[krogshede]

YAMAHA RD 500 RULES !!

[rg500delta]

I have always been a Yamaha guy. I have three aircooled RDs and followed Roberts fanatically when I was younger. It was my lifelong dream to ride a TZ750. When the RZ500 came out I HAD to have one.. that is, until I saw the RG500.  Nowadays, who cares!! Us two-stroke fans need to stick together!! Even if you do ride a bloated, slow and ill-handling RD500. ;-) just kidding ya, man!!

[rg500delta]

I have some RG stuff online at r g 5 0 0 d e l t a dot c o m, there are also a lot of good RG pages to other sites on my site

[wrsni139]

Lovely bike, I have a standard RG500 also RD500 but I also have a chassis and much of what would be needed to build another RG "special". Is there a particular site anywhere with details of your bike as you seem to know what you're at. Thanks.

[TotalNekro]

Impressive figures. But I have to say that the RG looks alot better whith the original fairing and colors.

[rg500delta]

You know what, I have new bodywork since then, and it is blue and white again! Have you seen the mockup of the RG600 by performance bikes?  classic paint scheme on a new body- very cool!

[p0ngl3]

nice very nice, but do you actually ride it often?

[rg500delta]

Good question. I used to ride it a lot, and it is quite streetable. Lately I have moved on to other projects and the RG has been in an "upgrade phase" for 2 years now. I ride a TL1000S as my streetbike (it is much more fun and useful to ride around here), I have an RS250R as my trackbike; it is far better than the RG at doing hot laps. I just put forks from an 07 YZF-R6 on the RG, was hoping to get it going this summer... Iowa is not a good place for an RG500. Straight and bumpy 8-(

[p0ngl3]

It's a stunning machine mate, nice to know you actually ride it! I'm jelous lol.

[rg500delta]

Thanks Karl! You know what, one of my buddies built exactly that, an RZ350 with big-bore aftermarket banshee top end, stuffed into an RS250 frame. That seems like a lot more practical way to go than an RG, especially if you actually want to ride it and flog it around trackdays or whatever. RG parts price is making guys thing 3x about actually operating an RG these days.

[AcidVFR400R]

Randy been following your Rg builds for years, i grew up reading about marks and your bikes along with others. with prices going sky high i now relise i will never own one, My Cr500 Sm will have to do. maybe one day i will get a 350 engine into an Rs250 then use trinity racin bore kit to get 535cc then my dream will be complete. (remember sol's Rs500)

Keep the dream alive, and the RG smoking

karl

[TOSTROKE]

132 hp on 500 cc is like 264 hp on a 1000 cc match that. to stroke rules

[67genxer]

ah did the lil'ol two stroke eat the big bad four strokes for breakfast and everyone is surprised. you want to see something really funny, run the 500cc RG against a 500cc fourstroke. kfaw kfaw, no contest ;)

[AntonFibes]

lol., you are full of bullshit rg500delta.

I see you have deleted my previous comments about dynos and hp on the superflow vs the rest of the world.

You said that you got 126 hp on the superflow and the prepped kawasaki zx6r got 101.

Why dont you come over to Europe with your RG? you should come in with about 180 -200hp over here, you will be in all the magazines!! ;))

I will not be surprised if you delete THIS comment also.

Go on, live your lie, delete the truth

[rg500delta]

Anton- I have not deleted anyone's comments. Maybe there is some slight chance that your comment did not actually get posted? So chill out! I didn't just "say" I got 126 HP, and the ZX6R got 101, the 6R actually DID make 101 hp.  The whole point of doing the HP shootout at Daytona is that BS ends when they strap your bike onto the dyno. So, if you want to get into a pissing match in the comments, forget it. My 500 has proven itself many times over. What "truth" have you provided?

[rg500delta]

And if it makes you feel any better, there are several RG500 with TZ cylinders over in Europe. GHN racing made 155 HP on their dyno- another RG-TZ makes 145 hp on a different dyno. My engine is not the only RG making this kind of power. Mark Dent's big-bore RG makes 145 HP and 75 ft-lbs. I expect my engine would be right in the same ballpark as those others. RGs tend to top out in this same range, no matter how we approach it. I think it would take Nitrous and a short life to make 180!

[lethe6969]

Awesome bike.

I need to add a 2 stroke to the garage one of these days.

As for the dyno, my Monster is only go for low to mid 60s on on a conservative dyno but who gives a shit it'll hang with bikes with much more power on the twisty roads where it matters.

Good one ya for deflating a few egos with a "mere" 500.

[ricostico]

what's the size of the carburators?

[rg500delta]

38mm TMX carbs. I started with 35mm. Got a few extra HP when I bored them to 36.5mm. Changing to 38mm actually made no improvement over 36.5.

[ricostico]

okay okay, I drive ith 17,5mm on a 50cc moped:P

[rg500delta]

Hey, yours is probably running right now, and mine is in the middle of yet anther upgrade... so you are making more power than me! One time in high school we got fancy and put a 28mm carb on my friend's moped. THAT was a disaster.

[ricostico]

my plans are to buy another moped and make it as powerful as it can be

MHR 86cc, 30mm carb, carter tuned etc, etc.

hope to get 20/21 HP

[57hms19]

"Happy number" dynos?What good is it if it isn't accurate?Thanks for posting.FWIW,I have a "stock" Gamma.H.

[rg500delta]

The way I understand it, DJ factors in an estimated amount, to guess how much you are making at the crankshaft. Superflow measures how much is making it to the contact patch. No extra factored in. Pro-flow has a good explanation on their site.

[mobilexgr]

2-Stroke for ever!!!

[AntonFibes]

in 2004 the stock gsxr1000 had 160 hp and the zx12r had 178 hp. why are the hp numbers in your video so low ?

[rg500delta]

The HP shootout is on a Superflow dyno, which simply gives lower numbers than a dynojet does. A lot of guys were pissed, who posted big HP on their home dyno, to show up at AMI and get 10-15% less, but that's just how it reads. Did you see the comments from the superflow technician at the very end? But- yeah- The ZX12R made 144 on Superflow. Quite a drop from the 178 that Kawi claimed, eh? Even in 2003 when they had a 600 class, few 600s could crack 100 HP on the superflow.

[rg500delta]

Google "factory pro true HP" to find Factory Pro's web page with lots more info on true rear wheel HP vs dynojet, and many readings of various bikes' actual HP. It's kind of depressing, but what can you do. All I can say is, same dyno, same operators, you can compare bikes directly. Whether we read 165, or 140, or 120 HP, they all compare directly which is why the HP shootout is a "no arguments" comparison between bikes. One more detail- I run 92 octane Amoco pump gas!

[hpndvr]

OK finaly more 2 stroke lovers still out there. wicked video, I did own a gamma 500 at one time, MISS is dearly.

[rg500delta]

Jeezus!!! What if my wife reads this- she'll know where the kid's college fund went. Too much! LIke every other guy who goes nuts on some goofy project bike. We all spend way too much. LoL

[86GAMMA]

GREAT VIDEO!..Now spill the beans..How much do you have invested in that beast???...I seen some of your tech postings on various sites..but no mention of dollars! lol...Great Bike! Cheers