turbo bike engine
12-02-2010, 10:20 AM
#1
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turbo bike engine
what amount of boost could a standard zx9r engine take,its an 02 engine on carbs and didnt cost me that much money so was just wondering if it would work with a turbo and how well,ive got a s2 intercooler that i could use and could probably get hold of a cheap turbo aswell
12-02-2010, 02:21 PM
#4
cossie fan (unluckerly)
the key with tubos on bikes is to fit a large laggy turbo so it comes in at high revs/high speeds when they start to run out of steam if u fit one that spins up quick or low down when a bike has all its power as we all know bikes are fast as fuck till about 130 well 1000s are anyway then all u will get is a bike that looks at the sky and the power will be useless or on a go kart it will be just a wheel spin mod!
12-02-2010, 04:01 PM
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12-02-2010, 06:09 PM
#8
cossie fan (unluckerly)
small turbos that spin up low down are a total waste of time on bikes they dont need any help in this range on a road bike in gear low down it will be unusable power u will have to keep backing off or u will just be on the back wheel all the time!
12-02-2010, 06:40 PM
#9
Try to track down an IHI RHB52 from a Dihatsu charade turbo, I fitted a turbo based on one of these to my FZR1000 exup, the exhaust housing was a bit small (R-15) and I changed it for the next size up (R-20)
They come in wierd sizes..
R-9
R-15
R-20
R-25
Try to get a R-20, it worked fine on my bike although I had to port the wastegate hole as it was still a bit small on a 1040cc engine.
Stick to 5psi and you should be fine on stock CR.
Getting the fueling right with carbs can be a pain in the ass, you will need a turbo carb fuel pump and a boost referenced FPR (I used one from a Lotus Esprit turbo) All the pipes from the carbs that go to atmosphere will need plumbing into the boost side of the turbo to prevent the fuel getting blown out of the carbs on boost.
If you are really serious about doing it by this book.
http://www.amazon.co.uk/Motorcycle-T...6003416&sr=8-1
I had trouble getting the fueling right on the transition from cruising to boost and Megasquirted mine in the end, plenty of people get away with blowing through carbs, exups are very finicky about the vent lines that go to the float chambers and just adding a length of pipe to them caused problems
Mark
12-02-2010, 06:44 PM
#10
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ive already got the gokart running and rolling was just wondering how well it would go with a turbo on aswell,im not fussed about the handling that much tbh as its just for a bit of fun
12-02-2010, 06:50 PM
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i will look into it a bit more then make a decision,like i said its just for a bit of fun so not to fussed on which way to go but the extra power could make it a bit more interesting than its already going to be lol
12-02-2010, 08:03 PM
#19
cossie fan (unluckerly)
I disagree with you on that one, the extra midrange makes it far more rideable with a smaller turbo.
Try to track down an IHI RHB52 from a Dihatsu charade turbo, I fitted a turbo based on one of these to my FZR1000 exup, the exhaust housing was a bit small (R-15) and I changed it for the next size up (R-20)
They come in wierd sizes..
R-9
R-15
R-20
R-25
Try to get a R-20, it worked fine on my bike although I had to port the wastegate hole as it was still a bit small on a 1040cc engine.
Stick to 5psi and you should be fine on stock CR.
Getting the fueling right with carbs can be a pain in the ass, you will need a turbo carb fuel pump and a boost referenced FPR (I used one from a Lotus Esprit turbo) All the pipes from the carbs that go to atmosphere will need plumbing into the boost side of the turbo to prevent the fuel getting blown out of the carbs on boost.
If you are really serious about doing it by this book.
http://www.amazon.co.uk/Motorcycle-T...6003416&sr=8-1
I had trouble getting the fueling right on the transition from cruising to boost and Megasquirted mine in the end, plenty of people get away with blowing through carbs, exups are very finicky about the vent lines that go to the float chambers and just adding a length of pipe to them caused problems
Mark
Try to track down an IHI RHB52 from a Dihatsu charade turbo, I fitted a turbo based on one of these to my FZR1000 exup, the exhaust housing was a bit small (R-15) and I changed it for the next size up (R-20)
They come in wierd sizes..
R-9
R-15
R-20
R-25
Try to get a R-20, it worked fine on my bike although I had to port the wastegate hole as it was still a bit small on a 1040cc engine.
Stick to 5psi and you should be fine on stock CR.
Getting the fueling right with carbs can be a pain in the ass, you will need a turbo carb fuel pump and a boost referenced FPR (I used one from a Lotus Esprit turbo) All the pipes from the carbs that go to atmosphere will need plumbing into the boost side of the turbo to prevent the fuel getting blown out of the carbs on boost.
If you are really serious about doing it by this book.
http://www.amazon.co.uk/Motorcycle-T...6003416&sr=8-1
I had trouble getting the fueling right on the transition from cruising to boost and Megasquirted mine in the end, plenty of people get away with blowing through carbs, exups are very finicky about the vent lines that go to the float chambers and just adding a length of pipe to them caused problems
Mark
12-02-2010, 08:23 PM
#20
PMSL, you need to ride one to get what I'm talking about.
My ex boss had a K5 GSXR1000 and the mid range was a bit limp in comparison.
If the boost does not come in with a bang and is predictable why not have it go from 4500 to 11000+ revs intsead of having it all at the top of the rev range ?
my old bike running 10 psi - power at the wheel
I ran out of dyno time so excuse the AFR !
Mark
My ex boss had a K5 GSXR1000 and the mid range was a bit limp in comparison.
If the boost does not come in with a bang and is predictable why not have it go from 4500 to 11000+ revs intsead of having it all at the top of the rev range ?
my old bike running 10 psi - power at the wheel
I ran out of dyno time so excuse the AFR !
Mark
Last edited by Mark V8; 12-02-2010 at 08:59 PM.
12-02-2010, 08:37 PM
#21
I've found that life I needed.. It's HERE!!
look i will just say that when we had a fairly small turbo on a busa with not vast modifications ,running in super street class so no wheelie bar or nitrous,the bike ran 8.3 sec quarter,you could tune the power for grip and 60ft etc,now it has gt35r twin externals motec etc etc and is much more of a handfull to ride as its around 550hp but so far only ran 7.9 which ok is a vast improvement and will go quicker ,but now struggle to stop wheelspin front wheel lifting in 6th at 180mph,the point im making is i know its not a road legal bike but with a basic setup and a smallish turbo the bike will still be rideable and will be bloody quick,as most bikes will pull 12,000 revs hence no need for big turbos,my advise and opinion only thanks
12-02-2010, 08:45 PM
#22
well, IMO an intercooler won't really be needed on such a low boost, it isn't going to see mega high temps.
going off my own experience in an xr2 with a turbo technics kit boosted to 5psi originally, the IC had no airflow and probably did nothing anyhow.
as for turbo choice, the exhaust housing dictates how much power is lost off boost, lag and peak power.
going off my own experience in an xr2 with a turbo technics kit boosted to 5psi originally, the IC had no airflow and probably did nothing anyhow.
as for turbo choice, the exhaust housing dictates how much power is lost off boost, lag and peak power.
13-02-2010, 12:14 AM
#24
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When the kart does get used it's going to get abused lol it's only for fun so nothing needs to be to serious about the setup,I'm going to try getting a smaller sprocket for the axle so I can get a better top speed because as it stands I'm using the standard rear bike sprocket but with the gokart rear wheels,acceleration will be awesome once it gets grip but top speed is going to be low
