thats right!
im not gonna fork over 350$ to the salvage yard for a motor...
i'd scrap out my parts and give to my roomate before i didn that...
BUT i DO have an extra HONDA 750 engine (out of a 87honda CB 750)
i know it's a bigger motor and theres a few things that concern me...
weight
HP
TQ
SIZE
obviously how will the bike take the weight...
it seems to do fine with me... and when i rode 2up...
well i've since lost my GF so thats not an issue
HP will i have to upgrade to a bigger chain or is the 520 i have going to suffice? (safely!)
TQ... will this new engine rip my fram a new one? .... i will beat on it so wheelies are expected.... (let the basshing begin)
and size..
from my first go over it SEEMS that the engine will fit...
the chain is about the same distance from engine center to links
but im thinking the 750 might be a bit LONGER
so the heads will probally have a tight fit
im aware that im going to have to make all kinds of custom motor mounts to make this beast work... and im fine with that..
3/8" plate should make a sturdy mount right?
hey, with enough wire, we can weld anything together. (gonna watch this thread a while) :)
Good luck, you and about a few hundred people ask, and say the same thing. :technical:
Go for it. Buddha will tell you what exactly what you need to do. :thumb:
It's gonna be...interesting...at least. I wish you luck.
Oh yea it fits, easy. I did 2 of them, just last week.
Wire ... weld ... we dont need no steenkin welding with the wire, we just use it to wrap it a 100 times around like so ...
Yea go for it indeed ...
Cool.
Buddha.
This sounds like an awesome build, a nighthawk 750 I4 motor in a GS frame... PLEASE post pictures if you complete this incredible feat. great motor, I"d up the chain to 525 or maybe a heavy duty RK 530 if you can for the sake of being heavy duty enough. I know for a fact that RK chains are TOUGH AS DIAMONDS and last about as long.
measure the motor's overall length at the bottom, it may be a bit longer.
What about the exhaust manifold? will it fit arround the frame rails?
Rebuilding your current engine or spending $350 for another would be cheaper. ;)
har har har...
very funny guys
so far i've remove the engine from my GS (i want to see what when wrong)
as for the transpant...
this is the same block from the nighthawks (IIRC)
the headers DO fit around the GS frame
outer 2 pipes on the outside of the frame
they are both ~18 inches tal
but the CB engine is 2 inches longer... ~ 20 inches
and as i said before the chain lines up well
Why do people always have to reinvent the wheel? :dunno_black:
I do love your enthusiasm though! :cheers:
Quote from: Suzuki Stevo on January 08, 2009, 12:20:22 AM
Why do people always have to reinvent the wheel? :dunno_black:
I do love your enthusiasm though! :cheers:
because it's thar !~;-)
oh trust me if i had a second GS engine (short of the one i gave to my romate for X-mas (lol!) then i'd put that in not 10 minutes after i removed the old one...
but i do not and im broke so buying a used on isnt an option....
i DO however have a honda 750 engine that i already know runsim not reinventing the wheel out of want but out of need =-P
and trust me i cant wait to shoehorn this 750 into the tiny GS fram and firure out hte wiring =-P
if the 3/8" brackets don't work you can always use duct tape ;) just kidding (I couldn't figure out anything funnier but I want to be notified of new replies)
good luck :cheers:
PS. I really hope that you succeed and prove that it's doable :thumb:
hehe
we'll see
for all that have taken the GS engine out of the fram before they know its a PITA
the honda engine is WIDER and 2" longer so this shold be interesting....
i wouldnt be supporised if i have to take off the top end to preform the surgery
:o
I wouldn't even try, to be honest. I would rather find a CR500R block and do that. Twice the horsepower, half the weight (the engine, that is).
Or I'd do something really interesting...like cut the outer jugs off a GSXR1000 block, cut the 1 and 4 sections off the head, then adapt the con rods to fit the GS500 crank. Of course you'd have to build a 1.5mm spacer between the block and jugs, but I think it could work.
The CR500 thing would be easier, though...a CR1000 would be super awesome and still easier...
yeah i took the CB block out...
i will have to extend my frame~2 inches on the bottom end
and if i paid for another block it would probally be a RGV engine *evil
never go with an rgv engine. If you want to go that route, go for a banshee engine.
hell with banshee. I got a buddy running an RZ right now, and honestly, its a HUGE pain in the balls. I'd rather adapt something meaner into that frame, like, ohhhh I dont know, say a gsxr250 motor?
Quote from: starshooter10 on January 08, 2009, 07:27:29 PM
yeah i took the CB block out...
i will have to extend my frame~2 inches on the bottom end
and if i paid for another block it would probally be a RGV engine *evil
I didn't have the heart to tell you that if you used the current GS chainline your CB engine would not end up in the middle of the bike...even if it did fit inside the frame.
Quote from: Suzuki Stevo on January 08, 2009, 09:39:07 PM
Quote from: starshooter10 on January 08, 2009, 07:27:29 PM
yeah i took the CB block out...
i will have to extend my frame~2 inches on the bottom end
and if i paid for another block it would probally be a RGV engine *evil
I didn't have the heart to tell you that if you used the current GS chainline your CB engine would not end up in the middle of the bike...even if it did fit inside the frame.
oh yeah?
looks to me like from the center of the GS block to the chain the is a 4" offset...
looks to be ~4 inches on the honda too
unlike modern bikes...which run up to and in excess of 180mm on the rear tire...old bikes have a pretty narrow offset on the output sprocket.
i know..
and im checking the sproket to center of engine..
i suppose i can also campare cain to center of tire?
but i think they are going to be the same also...
(runs to garage)
wel granted mesureing the center of tire to the rear sporket isnt the most accurate...
looks to be ~.5 inches
give +/- .25 for error...
i can live with mounting the engine a tad to one side.... (if it'll make the sprokets line up)
or since the CB has a wider set...
i could probally put a small spacer between the kush and the sprocket...
keep the engine and tire centered while keeping the chain happy...
and a tab bit mroe rotating mass wont bug me as the 750 CC block puts out MUCH more then the GS did
So you are going to "extend" your frame 2 inches? isnt that getting pretty close to the ground?
Here we go again eh :D Over the years lots of dreamers have been in here and said they are going to do this and that etc :D I really have lost count of them. Turbos (come back Rangerbrown), underseat exhausts, fuel-injection and engine transplants are always favourites. Funny thing is despite all the talk that goes on at some stage (usually #1) reality takes a bite, the problems start, money needs to be spent and the people concerned find themselves out of their depth and mysteriously drop off the radar.
So yet again I find myself waiting with "baited breath" for a venture to come to fruition. Call me cynical but as both a Biker and a Professional Engineer, I really would like to see someone actually walk the walk as well as talk the talk........ for a change.
Starshooter??? when can I/we expect to be impressed?? Can I put a reminder in Outlook and ask you in say.......1 month for a progress update??
hehe sure give me a month chnces are i'll have a new bike or have it done by then...
and im not extending the frame DOWN im extending it tword the front wheel...
the honda engine is LONGER not TALLER
Quote from: starshooter10 on January 09, 2009, 09:50:17 AM
i'll have a new bike or have it done by then...
Oh ok.......so..... there is a chance its not going to happen after all then?
A new bike - will be cheaper.
Anyway extend the frame forwards, and it will prolly have the front wheel hit the exhaust pipes. Now the obvious solution to that, need I even say it, add ~10 degrees to the rake.
Not only will it be a 4 cyl, it will also be a chopper. Think of how much cooler it will be.
Sledge - you have seen pics of my GR motored GS haven't ya.
Its pending exhaust pipe and carbs but its all 100% in there. I had to cut the top T brace and make it bolt on, made new motor mounts etc but as a bike its all complete. Just externals need finishing.
Cool.
Buddha.
im not gonna add 2" to the bottom and have it extend the rake.. that would ruin the dynamics of it..
think more along the lines of an underbite...
yeah it's like that O_O
Quote from: The Buddha on January 09, 2009, 11:51:46 AM
Sledge - you have seen pics of my GR motored GS haven't ya.
Nope...get some posted :thumb:
id be interested in those pics too...
Quote from: The Buddha on January 09, 2009, 11:51:46 AM
A new bike - will be cheaper.
Anyway extend the frame forwards, and it will prolly have the front wheel hit the exhaust pipes. Now the obvious solution to that, need I even say it, add ~10 degrees to the rake.
Not only will it be a 4 cyl, it will also be a chopper. Think of how much cooler it will be.
Sledge - you have seen pics of my GR motored GS haven't ya.
Its pending exhaust pipe and carbs but its all 100% in there. I had to cut the top T brace and make it bolt on, made new motor mounts etc but as a bike its all complete. Just externals need finishing.
Cool.
Buddha.
:nono: You did not have to cut the T brace. We popped the thing in in like 15 minutes :icon_lol:
Yea I had to. If I ever wanted to pull the valve cover without taking the motor out.
Now with the GS mounts it has a lot of room, the GR motor is shorter front to back and narrower side to side. However it needs mounts made and once the mounts have been welded in, the removal/reinstall will be much much harder.
Essentially GR motor is taller all the way around. Almost 1 inch taller on top and 1/2 inch taller at the case. Its is ~1/2 inch shorter front to back and ~1/4 inch or so narrower side to side, especially at the rear. It will fit in the GS engine bay a lot easier than a GS engine. Once you put the plates and motor mounts to grip it in place, it will be tight as hell to get it out. I have done washers in the back to space it in the mounts, bottom I used the stock GS mount and the front I re did. Rear top I had to weld in a ear on the stock one on the left I think if I recall.
Getting it out now will be a bit harder I think.
Cool.
Buddha.
Wait, was this a real motor swap? I thought you were being sarcastic?! PICS NOW! please!
Yes, it was a real swap. Wera643 and I popped it in one day just to see how much trouble it would be.
And what is a GR out of? I'm not familiar with the GR motor?
And PICS?! lol
Thanks,
Nick
This is a GR ...Suzuki GR650 Tempter :woohoo:
(http://www.suzukicycles.org/photos/GR-series/GR650/1983_GR650D_US_470.jpg)
Oh sweet! A 650 in the GS?! I really want to see pics. Has it been ridden yet? Is there a topic posted about this I didn't know about?!
Thanks,
Nick
No, the Buddha is being a sloth about putting this together :icon_lol: But I'm assuming its because of parts being scarce.
DAMN THE BUDDHA!
So, is the CB motor in that GS yet?
Quote from: neverendingninja on January 18, 2009, 08:31:11 PM
So, is the CB motor in that GS yet?
Its all gone quiet in here.........but he has got another 3 weeks yet :laugh:
You're all gonna shaZam! when he comes back with a 4 cylinder GS500 that weighs 100lbs more and makes about 15hp less than the SV650 he could have bought for the same price.
Quote from: average on January 15, 2009, 10:08:14 PM
No, the Buddha is being a sloth about putting this together :icon_lol: But I'm assuming its because of parts being scarce.
No parts needed. Running GS carbs, custom pipes to clear the frame and all the rest is GS. In fact I doubt any of the stock parts of the GR were even different from the GS450 which basically was just upgraded into the 500. Anyway, parts are not scarce, weather, time etc are.
Cool.
Buddha.
Alright then post pics of it or I'll remind everyone of who you really are...again...bwa ha ha ha...
Posted this pic here several times. But I was then selling the FE.
Anyway here it is.
http://picasaweb.google.com/srinath.the.man/GS500PartsIMadeModified?authkey=OwG2s0koY9A#
Look carefully, GR motor and kat FE in that bike.
Its actually just a wee bit further along. Got carbs on it, found out airbox does fit however It will hit the underside of the tank. A lot. That was it. I can have it running in under 1 day and possibly be ride away condition in another few hours, if only the job that is sucking the life out of me and the weather that has teamed up with Al Bore's lies will part ways. Yea ... glad to be working, yea ... who'd ahve thunk, in the worst recession in a 100 years I'd be employed, cos even in the boom I was unemployed 50% in some years.
Cool.
Buddha.
(http://lh5.ggpht.com/_BzoXIZKKrOA/SCcQmiezjBI/AAAAAAAAACs/Yoj67gsM1qg/s576/P0010456.jpg)
I beg you, good sir, to finish it and get good pictures of it...lest we declare shenanigans.
I think it be a torquemada, but not quite a sporte-mada.
Its be a sport bike like a harley sportster sport sportster sporty sport is a sport bike.
Finishing it, yea maybe in July or so.
Cool.
Buddha.
and this would be easier.....than aborting a CB into the GS frame
but i have done crazy stuff myself
and so has Justin
(http://kaleesphotography.com/photoartclub/showoff/gs750new2.JPG)
What is up with the battery?
Assuming you're talking about my bike...it's what came with it. It'll be abandoned at some point but, since it works quite well and allows me about 50 miles after my stator dies, it'll be staying until I'm comfortable with the damn generator.
I'll post a couple more pics tonight...I got all the dust and oil off her...she kind of gives me a hard on...almost as much as kalee...
Quote from: makenzie71 on January 20, 2009, 05:14:52 PM
...she kind of gives me a hard on...
Wait, I thought you were female......how is that possible?! :o :icon_confused:
What can I say...chicks get "hard" too.
lol still trying to decide if thats hot or not?! A chick getting "hard", yep I can run with that lol
Mackenzie you're female :icon_question: Looks like I got competition I didn't know of!
Women getting hard :bs: we just make you guys think it to feel better.
mary
Mak would make one ugly girl :icon_mrgreen:
(http://myspace-140.vo.llnwd.net/01247/04/17/1247597140_l.jpg)
yeah but you should see my boobs
I like boobs!
Probably bigger than mine I'm a whopping 36B! Man I even got implants well if you count the defibrillator in my left chest and a Power Port in my right chest. Soooo Sexy! At least I can plug into the matrix!
Maybe Mack can be on the top 25 list of men who look like lesbians! :cheers:
Mary
boobs?
lesbians?
what?
what did I miss?
Some one speaks of block transplant and it all comes down to boobs... :icon_lol:
Well,the boob job would be easier I guess... :dunno_black:
and we are dealing with pigs..... so..... this new direction of this thread is worthless without pics :icon_twisted:
Quote from: werase643 on January 22, 2009, 05:50:02 AM
and we are dealing with pigs..... so..... this new direction of this thread is worthless without pics :icon_twisted:
+1
(http://www.mvagusta.nl/models_2008/f4_1000_senna_1.jpg)
sexy but not boobs!
i dunno, personally i'd take a pic of a bike that sexy over pics of boobs any day. Now if said boobs were HERE that'd be another story entirely :icon_mrgreen:
One your not getting my boobs on here and two dang that is a sexy bike :icon_exclaim: What is it? I'd ride it. Well, uhm that didn't come out right :icon_eek:
mary
That would be an MV Augusta F41000. And yeah i'm sure you would ride it :thumb:
That's not just an F4 1000.
senna. -hangs self in shame-
Hey, you know what Ron White says. "Once you've seen one pair of boobs....you pretty much want to see them all."
which is why I want to see them!
Quote from: GI_JO_NATHAN on January 22, 2009, 06:31:21 PM
Hey, you know what Ron White says. "Once you've seen one pair of boobs....you pretty much want to see them all."
That pretty much sums it up.
NSFW:boobs on bikes parade (http://www.pbase.com/craigsyd/boobs_on_bikes)
but seriously
What's going on with shoving that engine in there. Let me know if you need anything, I'm just up the road.
Also, Bryce Rocket has at least one parts GS. I also saw them selling Kawa EX500 engines for $100 on ebay. They charged 1/2 of the ebay price when I just went in and asked for what I wanted (GS reflectors). Might be worth a shot.
That link FTW!!!!
Quote from: sledge on January 09, 2009, 03:14:22 AM
Here we go again eh :D Over the years lots of dreamers have been in here and said they are going to do this and that etc :D I really have lost count of them. Turbos (come back Rangerbrown), underseat exhausts, fuel-injection and engine transplants are always favourites. Funny thing is despite all the talk that goes on at some stage (usually #1) reality takes a bite, the problems start, money needs to be spent and the people concerned find themselves out of their depth and mysteriously drop off the radar.
So yet again I find myself waiting with "baited breath" for a venture to come to fruition. Call me cynical but as both a Biker and a Professional Engineer, I really would like to see someone actually walk the walk as well as talk the talk........ for a change.
Starshooter??? when can I/we expect to be impressed?? Can I put a reminder in Outlook and ask you in say.......1 month for a progress update??
Anything to report yet?......or is it looking like I am going to be disapointed again?
Did you really think it would be any different?
Nick
here is an update for you guys...
i traded out my CB 750 block for another block...
i'll be chopping the crap out of the top portion of the frame (followed by HUGE reenforments)
pics to come....
(http://c2.ac-images.myspacecdn.com/images02/34/l_173c61d9e0e84784816eb680624d128d.jpg)
Quote from: starshooter10 on February 18, 2009, 07:30:02 PM
here is an update for you guys...
i traded out my CB 750 block for another block...
i'll be chopping the crap out of the top portion of the frame (followed by HUGE reenforments)
pics to come....
(http://c2.ac-images.myspacecdn.com/images02/34/l_173c61d9e0e84784816eb680624d128d.jpg)
Good thinking. Dude, CB750 engine weighs 250lbs(at least the DOHC one), I should now, I have one.! You think that little frame would be enough to hold it? lol
That little frame is quite a bit stronger than the CB frame...just fyi...