I'm going to post my project. I'm now at a stage of gathering everything
( parts ) I'll need to make this convertion posible.
After a lot of thinking I decided that I would like to make a quick powerfull SS 2stroke bike based on only on a RZ frame.
I love RD/RZ.
Inorder to make it posible I went on and bought 2 RD 31K very cheap in a not good condition & a 250 RGV for the front & banana swingarm etc...
Petros
Petros RZ 421cc hydrid & RZ 385cc KR project bikes !!
Moderator: rztom
Petros RZ 421cc hydrid & RZ 385cc KR project bikes !!
Last edited by petros67 on Thu Jul 26, 2012 5:27 pm, edited 3 times in total.
Re: RD 350 31K with 425cc Cub kit eng. converted with RGV pa
Fixed your link, but the pic doesn't come up.
I don't think youre right.
Ofcourse can not proof this today as engine is still in England at Stan Stephens premises beeing rebuilt.
The issue is that when I receive the engine I'll receive a dyno with it showing over 100 bhp on crank on road fuel as I agreed to built the engine as road use bike and not track bike.
Have you ever heard of Stan Stephens ??? He is one of the top tuners in two strokes and specially on YPVS engines.I also looked at Australia Steve with TSS 500 engines that he makes but decided to go with Stan.
I've seen a dyno on 400cc cheetah cub kit which does not require bigger crank goes with stock one with PWK 33 carbs and easily went at 74bhp.
I have ordered lomas pipes with slide in fittings on pipes but widder chamber based on TZ 350 which is wider then the ones made for 350cc.
My problem mate is that I can't post some pictures !!! I think this forum is quite complicated.
Petros
Ofcourse can not proof this today as engine is still in England at Stan Stephens premises beeing rebuilt.
The issue is that when I receive the engine I'll receive a dyno with it showing over 100 bhp on crank on road fuel as I agreed to built the engine as road use bike and not track bike.
Have you ever heard of Stan Stephens ??? He is one of the top tuners in two strokes and specially on YPVS engines.I also looked at Australia Steve with TSS 500 engines that he makes but decided to go with Stan.
I've seen a dyno on 400cc cheetah cub kit which does not require bigger crank goes with stock one with PWK 33 carbs and easily went at 74bhp.
I have ordered lomas pipes with slide in fittings on pipes but widder chamber based on TZ 350 which is wider then the ones made for 350cc.
My problem mate is that I can't post some pictures !!! I think this forum is quite complicated.
Petros
BTW Did you finish any project (RGV400, RSRD500 or even the dumb winter project) ? or I miss something?SEB4LO wrote:hey guy , i know him and all i can say is that he is good at advertising !!
and i built stroked stock/big bore/cheetah and cubs before him
when you come as neewbe on a forum look who you are talking to ....
no more infos for me
Have we seen any finished project or even a just running engine ? or any dyno charts of the TZRRD350 YPVS?
And since when French lawyers that work 90 hours a week build bikes better than professional two stroke tuners?
Participation to a forum does not transform as to the top tuners on earth.
G
George
I don't see any reason for the apologetic message, since Sebastian has several unfinished projects since many years.petros67 wrote:Pls accept my apologies. I did not want in any way to offend you !!!!
Maybe you are right as you are more experienced than me.
I only said what I was told and nothing further.
Fyi I'm fm Greece and first Greek guy attempting for such convertion to big bore 2 stroke engine.
We ( locally ) have only experience in tuning stock barrells and normal ways of mods etc.....
Again you miss understood me.
Petros
Also there is no data that he (or his engineer Stephan) built any big bore/big stroke RD engine.
I remember several unfinished projects in RGV250 forum and some other discussion groups.
At least you count one finished RZ250 and one RD435 (?) in progress.
Keep on the good job.
G
-
This old RZ
- Posts: 1773
- Joined: Sun Nov 27, 2005 12:04 am
- Location: So.Cal
I dont want or intend to step on anyones toes here 
But I justsold a similar engine due to the impending collapse otf the united states economy 
THE ECONOMY HERE ,,SUCKS:smt009 
. I spent nearlly 2 years of side job$$ for the engine which the guy said would crack into the 90h.p. range 
.
I realisticlly didnt really expect it to without race fuel and a new ignition set-up ,even if it didnt I was pretty confidant the bigger bore would allow a substantial increase in tourqe and alot more pull from down low. I belive you can tune a stock bore RZ easily into the mid to upper 70h.p. range even into the 80h.p range with race fuel,domes and ignitions that tare now available..but I think the larger bore allows alot more tq.
FYI
Stan is probably regarded as the most diversified and dare I say best 2-stroke tuner on the planet. Mainly due to how divese the range of engines he does. I had a friend with Gamma 500 that had a Stan tuned motor and it was alot quicker my Gamma was. Hes kinda like Gary@Spec 2 even Doug@ Moto Carrera...... people really dont like if they did not answer all their mundane questions for free on their dime when they called on the phone thats why he started charging for information..You Pay he talks
Regardless of your opinions we dont have enough of these 2-stroke sites around and whether I agree with what I readhere doesnt really matter..as its somthing to investigate and possiblly learn from
7 years ago if you told me that stock bore RZ could be tuned into the 70 h.p range I would have called you crazy
But after joining here and the old USA 2-strokers website and meeting some of the people and riding their bikes Ive had to eat a little crow BUT I STILLL SAY MY S.S LOMAS ARE STILL BETTER THAN TOOMEYS 
But I justsold a similar engine due to the impending collapse otf the united states economy THE ECONOMY HERE ,,SUCKS:smt009 . I spent nearlly 2 years of side job$$ for the engine which the guy said would crack into the 90h.p. range .I realisticlly didnt really expect it to without race fuel and a new ignition set-up ,even if it didnt I was pretty confidant the bigger bore would allow a substantial increase in tourqe and alot more pull from down low. I belive you can tune a stock bore RZ easily into the mid to upper 70h.p. range even into the 80h.p range with race fuel,domes and ignitions that tare now available..but I think the larger bore allows alot more tq.
FYI
Stan is probably regarded as the most diversified and dare I say best 2-stroke tuner on the planet. Mainly due to how divese the range of engines he does. I had a friend with Gamma 500 that had a Stan tuned motor and it was alot quicker my Gamma was. Hes kinda like Gary@Spec 2 even Doug@ Moto Carrera...... people really dont like if they did not answer all their mundane questions for free on their dime when they called on the phone thats why he started charging for information..You Pay he talks Regardless of your opinions we dont have enough of these 2-stroke sites around and whether I agree with what I readhere doesnt really matter..as its somthing to investigate and possiblly learn from
7 years ago if you told me that stock bore RZ could be tuned into the 70 h.p range I would have called you crazy
But after joining here and the old USA 2-strokers website and meeting some of the people and riding their bikes Ive had to eat a little crow BUT I STILLL SAY MY S.S LOMAS ARE STILL BETTER THAN TOOMEYS 
Petros,petros67 wrote:Pls accept my apologies. I did not want in any way to affend you !!!!
Seb is the guy that rips off the sprocket from the carrier with a single run on a home made cheetah... if you want to talk about TORQUE you should talk with HIM!
btw, Seb can you help me out with this?
http://www.rzrd500.com/phpBB3/viewtopic ... &start=105
"...It's just like traveling on a plane, but, without that horrible meal... and with the window opened..."
(RD350 87')
We have here in Greece locally a 2stroke website but I'd say that the experience is very limited on big bore 2stroke engines as no one attempted before.
The issue here is that I would like to share with you as my intention is to give life to a 350 engine which was for the garbage registered DEAD.
I've seen that in the states , England , Holland ,Italy etc some good 350's for sale at reasnable prices but in Greece believe me its very rare.
So Im forced to deal with such issues too.
For that reason I have except fm the RZ 250 29L , purchased two more RD 350 31k which I was able to find inorder to rebuilt.
What I want to say is that it's more difficult to rebuilt a good bike fm a garbage bike then to rebuilt one fm a in good shape bike.
http://s686.photobucket.com/albums/vv22 ... t=31k3.jpg
http://s686.photobucket.com/albums/vv22 ... t=31k4.jpg
http://s686.photobucket.com/albums/vv22 ... t=31k5.jpg
http://s686.photobucket.com/albums/vv22 ... t=31k7.jpg
2nd RD bought which I'm going to use frame.http://s686.photobucket.com/albums/vv22 ... 010235.jpg
RGV parts ( I bought a complete RGV inorder to take the parts much cheaper this way as RGV's are sold cheap here )http://s686.photobucket.com/albums/vv22 ... 010216.jpg
http://s686.photobucket.com/albums/vv22 ... 010218.jpg
http://s686.photobucket.com/albums/vv22 ... 010242.jpg
[/img]
The issue here is that I would like to share with you as my intention is to give life to a 350 engine which was for the garbage registered DEAD.
I've seen that in the states , England , Holland ,Italy etc some good 350's for sale at reasnable prices but in Greece believe me its very rare.
So Im forced to deal with such issues too.
For that reason I have except fm the RZ 250 29L , purchased two more RD 350 31k which I was able to find inorder to rebuilt.
What I want to say is that it's more difficult to rebuilt a good bike fm a garbage bike then to rebuilt one fm a in good shape bike.
http://s686.photobucket.com/albums/vv22 ... t=31k3.jpg
http://s686.photobucket.com/albums/vv22 ... t=31k4.jpg
http://s686.photobucket.com/albums/vv22 ... t=31k5.jpg
http://s686.photobucket.com/albums/vv22 ... t=31k7.jpg
2nd RD bought which I'm going to use frame.http://s686.photobucket.com/albums/vv22 ... 010235.jpg
RGV parts ( I bought a complete RGV inorder to take the parts much cheaper this way as RGV's are sold cheap here )http://s686.photobucket.com/albums/vv22 ... 010216.jpg
http://s686.photobucket.com/albums/vv22 ... 010218.jpg
http://s686.photobucket.com/albums/vv22 ... 010242.jpg
[/img]
Last edited by petros67 on Tue Aug 10, 2010 2:04 pm, edited 1 time in total.
