Fuel pump problems HELP

30thbusa · 11-22-2007, 11:30 PM

I have a hayabusa with fuel problems... Problem is, I have installed a 1397 piston kit and now the band width is to wide... tripping FI codes... The fix would be to go from 43 psi to 50 or 55 psi and more volume pump... I have been told that most stock fuel systems are good for 230 HP I should be around 200 but I am having problems... I have held both pumps side by side and the only differance is the electrical plug, so thats not a problem.. The thing is I don't know the flow rate of the pumps, could someone help? Any and all advise is welcome...
What is the stock HP of the s2000 and what psi are your regulators set at stock??? What hp can you get befor you need more fuel??? Is there a in tank high out put fuel pump avalible??? Also any one have a set of stock injectors you would like to sell???

kgf3076 · 11-23-2007, 06:52 AM

Umm, I believe the forum you need is 3 down and one to the left...this one is for 4 wheel motorcycles...

30thbusa · 11-23-2007, 08:49 AM

kgf3076
If I'm not welcome hear OK but on the bike forum they don't know any thing about the s2000... and as far as I can tell they are not to smart about there bikes as well... I was hopeing to find that the stock s2000 pump would be good for 300HP or at least get info on where to buy a high volume pump...

THANKS FOR ALL THE HELPFUL INFORMATION...

Java Junky · 11-23-2007, 10:55 AM

'At's whud I figured 'Busa.
That info'z available, but at the moment, our site techies n' wrenches appear to be still recoverin' from Thanksgivin' n' perhaps a little too much dago red.
(Except in Go's case. He'z probably out parked at that bank sign in 'iz shades (So nobody knows it's him), 'iz tee shirt n' 'iz Santa hat waitin' for the numbers ta register a new low for a photo-op)
Bu'cha know . . with all the spec data available on-line, you should be able to get cold, hard facts from Ma Honda rather than relyin' on unknown's. 'Jus' a thought.
Be well,
Java

30thbusa · 11-23-2007, 12:48 PM

Java Junky,
you say cold hard facts where??? Thats why I came here if you know where this info is could you tell me I have been serching, all I could find is a fuel pump to be mounted out side the tank... I am trying to keep it in the tank...

jagg · 11-23-2007, 05:06 PM

First things first......you realize an S2000 fuel pump needs 12 volts to work, right? (and it works off a ground interruption circuit to key on/off setup) So, before you go mangling a perfectly good connector make sure you can get that much juice to the pump. S2000 pump pressure will be between 47 and 54 psi, but only when loaded at the rail with the engine off. This info is only accurate when the pump is installed against an S2000's fuel rail.
With the engine running, the pump's putting out between
38 and 46 psi. I suppose you could regulate to it's max or maybe just a little beyond by adjusting vac with a rigged up regulator, or necking it down pre-injection, but you'll suffer for volume.

I don't have an answer as to how much volume would be generated, other that that in this case it would be determined by the size of the line. Larger diameter line, more volume and lower pressure, and opposite for a smaller line.

Nor do I have an answer to how much horsepower you'll get to before you need to go altering the fuel pump. Seem like a pointless question. In the recirculating fuel system that it was intended for, it's typically a non factor, as more fuel is arriving at the engine than it could ever be able to burn, in order to prevent all out destruction by running too lean. This problem is typically solved at the injectors and rail. You should be able to solve some problems associated with fuel vs. air intake by altering the baseline combustion algorithm that's currently being used in the e.c.m. Unit is flashable?

Good Luck, and don't get killed on it once you get it runnin'.

Jagg.

s2000isu · 11-23-2007, 05:17 PM

stock fuel pump is not good to 350 crank hp. I cant tell you if the busa has a 12 volt pump nor can I tell you if the s2000 pump will work in it like a stock one would buttttttttt a 255 lph pump will get you 300 crank hp nooo problem. They can be had on ebay for 70-100 bucks made by wallboro brand new. I have one laying around that I bought for another project but I am keeping it. Stock s2000 doesnt flow enough for 300.

Java Junky · 11-23-2007, 05:53 PM

'Busa'z 12 volt.

jagg · 11-23-2007, 06:12 PM

thanks j.j. clears that up.
i had to google it just to know what he was talking about.
I'm not man enough to tackle the scooters. I like keeping all my innards on the inside.

regards,
jagg

30thbusa · 11-23-2007, 10:09 PM

Thank you you have been very helpful... More so than 3 bike fourms...
The hayabusa is a 1300 cc suzuki... I am a auto mechanic I have my own shop I have ridden bikes sence I was 5... I have drag raced a little until one night at the track I went down over 100 miles per hour... sence then I have ridden very little but I still like to build strong reliable motors... so There was a guy challanged me to a race and I ecepted... same kind of bike as mine but he had been in the motor... I had 6 days to get ready, At the time I was only going to paint the bike, but after all the trash talk I decided to build the motor... Stock is 1297cc and 11to1 compression, big bore pistons are 1398 cc at 12to1 compression... I also ported the head and installed new springs degreed the cams well I just did alot of small things I have lerned threw the years long story short...I also installed wet nitrous... I just had enough of the trash talking, and no one else was going to shut him up... His weight is around 160ish mine 235-240,so he did have a big advantage... 6 days to paint and build a motor... I finished In time to ride around the block 4-5 times remaped the bike and left fore the location he chose, all his buddies were there but he didn't show... so i raced other guys even some that I seen out run this guy the sunday befor... I never lost without the NOS but I did get to try the nos 2 times... The bike ran very well, the bike seemed to get faster the more I rode it... Now thats the way you break in a freshly built motor right... (NOT) the only problem I have is the FI light gets triped in the higher rpm range at wide open throttle... the codes relate to injector falt codes... the problem is with the built motor needing more fuel than the stock fuel system can supply... The fix is to up the pressure from 43 psi to 55 psi and replace the pump with a higher volume pump... This would alow me to remap the power commander, this would shorten the injector band width... The band width now is over laping causing the computer to think the injectors are stuck open... I can modify my stock regulator so I just need a higher volume pump, the injectors will be fine with more pressure...
I have tried to explain in detail because some of you seem interested... I LIKE THAT on the bike fourms this is over there head or they just dont want to help...I'm sure I have left alot of things out, just ask because i'm the one needing your help!!!

Java Junky · 11-23-2007, 10:13 PM

Paint?????

30thbusa · 11-23-2007, 10:19 PM

I think all I need to get now is a new high volume pump that will replace the stock location s2000 pump any advise on where??? I have held my in tank pump next to the in tank pump of the s2000 thanks to the local autozone, so they shoule inter change.
The regulator is in the tank also...

30thbusa · 11-23-2007, 10:25 PM

Java Junky
ARE YOU TRYING TO BE DIFFICULT???

Yes paint I had the plastic off the bike and was going to paint it I never got around to it after the crash... So I did it all at the same time... You no slick paint makes your car faster dosent it?

Java Junky · 11-24-2007, 03:39 AM

Difficult? . . . . . No-o-o-o-o-o-o-o-o.
You don't know from difficult.
What I'm tryin' ta be is tactful, n' maybe'da find a less pretentious word than incredulous. Too @*#&in' tired though. 'Gonna goddadoo.

Jagg, that was off the cuff????
@*#&in' amazin'!
Be well,
Java
PS: 'Ain't never been real good at tactful.

kgf3076 · 11-24-2007, 04:15 AM

Quote:

Originally Posted by 30thbusa

kgf3076
If I'm not welcome hear OK but on the bike forum they don't know any thing about the s2000... and as far as I can tell they are not to smart about there bikes as well... I was hopeing to find that the stock s2000 pump would be good for 300HP or at least get info on where to buy a high volume pump...

THANKS FOR ALL THE HELPFUL INFORMATION...

Oh you're more than welcome here, I just didn't understand why you were asking about a Hayabusa problem on a S2000 site. Kind of like me asking for help with a Yamaha outboard engine on a music site...and now that I read what you're trying to do, it makes more sense. So where do you race? We've had a lot of gritching here about people street-racing bikes. Some of the local legislators are trying to ban "crotch rockets" (as they so lovingly put it) because of the way some people ride. I don't think they have a chance in the world...(and I came this close to buying a Hayabusa before I bought my S2k. They're similar but the S2000 is a bit more comfortable in the rain)

jagg · 11-24-2007, 09:37 AM

good luck.

30thbusa · 11-24-2007, 11:37 AM

WELL ALL THE FEEDBACK I'M SEEING NOW IS NEGITIVE, AND I TRY TO WALK AWAY WHEN TROUBLE STARTS...
ALL I WANTED WAS TO KNOW IS
1-WHAT IS THE GPM OR THE MAX HP THE STOCK PUMP WOULD SUPPLY?
2-WHERE WOULD I BUY A STOCK OR HIGH PERFORMANCE PUMP?

I THOUGHT THAT ON A S2000 FOURM THERE WOULD BE PEOPLE THERE WHO HAD INSTALLED ENOUGH HP TO BE STARVING THE FUEL SYSTEM AND HAD THE KNOLOGE TO FIX IT THATS ALL...
I HAVE LEARNED YOU CAN LEARN SOMETHING FROM EVERY ONE, WHAT YOU LEARN SOMETIMES YOU SHOULD JUST TRY AND FORGET...
ALSO JJ I CANT UNDERSTAND WHAT YOU ARE TYPING SORRY

Java Junky · 11-24-2007, 11:52 AM

'Z'okay 'Busa.
I get that alot.
N' most'a the time, if ya don't gedditt the first time . . . unlike certain, much appreciated Holiday birds, it ain't worth goin' back fer seconds.
Be well n' good luck,
Java

jagg · 11-24-2007, 12:42 PM

apologies,

i wasn't reading everything.

best regards,
jagg

11-22-2007, 11:30 PM	#1 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	Fuel pump problems HELP I have a hayabusa with fuel problems... Problem is, I have installed a 1397 piston kit and now the band width is to wide... tripping FI codes... The fix would be to go from 43 psi to 50 or 55 psi and more volume pump... I have been told that most stock fuel systems are good for 230 HP I should be around 200 but I am having problems... I have held both pumps side by side and the only differance is the electrical plug, so thats not a problem.. The thing is I don't know the flow rate of the pumps, could someone help? Any and all advise is welcome... What is the stock HP of the s2000 and what psi are your regulators set at stock??? What hp can you get befor you need more fuel??? Is there a in tank high out put fuel pump avalible??? Also any one have a set of stock injectors you would like to sell???

11-23-2007, 10:55 AM	#4 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 5,432	'At's whud I figured 'Busa. That info'z available, but at the moment, our site techies n' wrenches appear to be still recoverin' from Thanksgivin' n' perhaps a little too much dago red. (Except in Go's case. He'z probably out parked at that bank sign in 'iz shades (So nobody knows it's him), 'iz tee shirt n' 'iz Santa hat waitin' for the numbers ta register a new low for a photo-op) Bu'cha know . . with all the spec data available on-line, you should be able to get cold, hard facts from Ma Honda rather than relyin' on unknown's. 'Jus' a thought. Be well, Java __________________ In life-long pursuit of that most mythic of beasts: the ever-elusive perfect corner. Well . . . that, r' at least a whole lodda clear spin-out room. Last edited by Java Junky : 11-23-2007 at 11:17 AM.

11-23-2007, 05:06 PM	#6 (permalink)
jagg Senior Member Join Date: Sep 2007 Location: The Endless Mountains Posts: 2,520	First things first......you realize an S2000 fuel pump needs 12 volts to work, right? (and it works off a ground interruption circuit to key on/off setup) So, before you go mangling a perfectly good connector make sure you can get that much juice to the pump. S2000 pump pressure will be between 47 and 54 psi, but only when loaded at the rail with the engine off. This info is only accurate when the pump is installed against an S2000's fuel rail. With the engine running, the pump's putting out between 38 and 46 psi. I suppose you could regulate to it's max or maybe just a little beyond by adjusting vac with a rigged up regulator, or necking it down pre-injection, but you'll suffer for volume. I don't have an answer as to how much volume would be generated, other that that in this case it would be determined by the size of the line. Larger diameter line, more volume and lower pressure, and opposite for a smaller line. Nor do I have an answer to how much horsepower you'll get to before you need to go altering the fuel pump. Seem like a pointless question. In the recirculating fuel system that it was intended for, it's typically a non factor, as more fuel is arriving at the engine than it could ever be able to burn, in order to prevent all out destruction by running too lean. This problem is typically solved at the injectors and rail. You should be able to solve some problems associated with fuel vs. air intake by altering the baseline combustion algorithm that's currently being used in the e.c.m. Unit is flashable? Good Luck, and don't get killed on it once you get it runnin'. Jagg. Last edited by jagg : 11-23-2007 at 07:39 PM.

11-23-2007, 05:17 PM	#7 (permalink)
s2000isu Senior Member Join Date: Oct 2006 Location: pa Posts: 1,172	stock fuel pump is not good to 350 crank hp. I cant tell you if the busa has a 12 volt pump nor can I tell you if the s2000 pump will work in it like a stock one would buttttttttt a 255 lph pump will get you 300 crank hp nooo problem. They can be had on ebay for 70-100 bucks made by wallboro brand new. I have one laying around that I bought for another project but I am keeping it. Stock s2000 doesnt flow enough for 300. __________________ S2kx2: "paint it pink! Or better yet buy a Miata" 2001 Vortech SC 12.8 at 111 miles per hour

11-23-2007, 05:53 PM	#8 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 5,432	'Busa'z 12 volt. __________________ In life-long pursuit of that most mythic of beasts: the ever-elusive perfect corner. Well . . . that, r' at least a whole lodda clear spin-out room.

11-23-2007, 06:52 AM	#2 (permalink)
kgf3076 Grumpy old(er) phart Join Date: Oct 2006 Location: Here today, gone tomorrow... Posts: 1,309	Umm, I believe the forum you need is 3 down and one to the left...this one is for 4 wheel motorcycles...

11-23-2007, 08:49 AM	#3 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	kgf3076 If I'm not welcome hear OK but on the bike forum they don't know any thing about the s2000... and as far as I can tell they are not to smart about there bikes as well... I was hopeing to find that the stock s2000 pump would be good for 300HP or at least get info on where to buy a high volume pump... THANKS FOR ALL THE HELPFUL INFORMATION...

11-23-2007, 12:48 PM	#5 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	Java Junky, you say cold hard facts where??? Thats why I came here if you know where this info is could you tell me I have been serching, all I could find is a fuel pump to be mounted out side the tank... I am trying to keep it in the tank...

11-23-2007, 06:12 PM	#9 (permalink)
jagg Senior Member Join Date: Sep 2007 Location: The Endless Mountains Posts: 2,520	thanks j.j. clears that up. i had to google it just to know what he was talking about. I'm not man enough to tackle the scooters. I like keeping all my innards on the inside. regards, jagg

11-23-2007, 10:09 PM	#10 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	Thank you you have been very helpful... More so than 3 bike fourms... The hayabusa is a 1300 cc suzuki... I am a auto mechanic I have my own shop I have ridden bikes sence I was 5... I have drag raced a little until one night at the track I went down over 100 miles per hour... sence then I have ridden very little but I still like to build strong reliable motors... so There was a guy challanged me to a race and I ecepted... same kind of bike as mine but he had been in the motor... I had 6 days to get ready, At the time I was only going to paint the bike, but after all the trash talk I decided to build the motor... Stock is 1297cc and 11to1 compression, big bore pistons are 1398 cc at 12to1 compression... I also ported the head and installed new springs degreed the cams well I just did alot of small things I have lerned threw the years long story short...I also installed wet nitrous... I just had enough of the trash talking, and no one else was going to shut him up... His weight is around 160ish mine 235-240,so he did have a big advantage... 6 days to paint and build a motor... I finished In time to ride around the block 4-5 times remaped the bike and left fore the location he chose, all his buddies were there but he didn't show... so i raced other guys even some that I seen out run this guy the sunday befor... I never lost without the NOS but I did get to try the nos 2 times... The bike ran very well, the bike seemed to get faster the more I rode it... Now thats the way you break in a freshly built motor right... (NOT) the only problem I have is the FI light gets triped in the higher rpm range at wide open throttle... the codes relate to injector falt codes... the problem is with the built motor needing more fuel than the stock fuel system can supply... The fix is to up the pressure from 43 psi to 55 psi and replace the pump with a higher volume pump... This would alow me to remap the power commander, this would shorten the injector band width... The band width now is over laping causing the computer to think the injectors are stuck open... I can modify my stock regulator so I just need a higher volume pump, the injectors will be fine with more pressure... I have tried to explain in detail because some of you seem interested... I LIKE THAT on the bike fourms this is over there head or they just dont want to help...I'm sure I have left alot of things out, just ask because i'm the one needing your help!!!

11-23-2007, 10:13 PM	#11 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 5,432	Paint????? __________________ In life-long pursuit of that most mythic of beasts: the ever-elusive perfect corner. Well . . . that, r' at least a whole lodda clear spin-out room.

11-23-2007, 10:19 PM	#12 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	I think all I need to get now is a new high volume pump that will replace the stock location s2000 pump any advise on where??? I have held my in tank pump next to the in tank pump of the s2000 thanks to the local autozone, so they shoule inter change. The regulator is in the tank also...

11-23-2007, 10:25 PM	#13 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	Java Junky ARE YOU TRYING TO BE DIFFICULT??? Yes paint I had the plastic off the bike and was going to paint it I never got around to it after the crash... So I did it all at the same time... You no slick paint makes your car faster dosent it?

11-24-2007, 03:39 AM	#14 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 5,432	Difficult? . . . . . No-o-o-o-o-o-o-o-o. You don't know from difficult. What I'm tryin' ta be is tactful, n' maybe'da find a less pretentious word than incredulous. Too @#&in' tired though. 'Gonna goddadoo. Jagg, that was off the cuff???? @#&in' amazin'! Be well, Java PS: 'Ain't never been real good at tactful. __________________ In life-long pursuit of that most mythic of beasts: the ever-elusive perfect corner. Well . . . that, r' at least a whole lodda clear spin-out room. Last edited by Java Junky : 11-24-2007 at 03:43 AM. Reason: Therapy

11-24-2007, 09:37 AM	#16 (permalink)
jagg Senior Member Join Date: Sep 2007 Location: The Endless Mountains Posts: 2,520	good luck. Last edited by jagg : 11-24-2007 at 12:41 PM. Reason: edited for my own stupidity

11-24-2007, 11:37 AM	#17 (permalink)
30thbusa Junior Member Join Date: Nov 2007 Posts: 7	WELL ALL THE FEEDBACK I'M SEEING NOW IS NEGITIVE, AND I TRY TO WALK AWAY WHEN TROUBLE STARTS... ALL I WANTED WAS TO KNOW IS 1-WHAT IS THE GPM OR THE MAX HP THE STOCK PUMP WOULD SUPPLY? 2-WHERE WOULD I BUY A STOCK OR HIGH PERFORMANCE PUMP? I THOUGHT THAT ON A S2000 FOURM THERE WOULD BE PEOPLE THERE WHO HAD INSTALLED ENOUGH HP TO BE STARVING THE FUEL SYSTEM AND HAD THE KNOLOGE TO FIX IT THATS ALL... I HAVE LEARNED YOU CAN LEARN SOMETHING FROM EVERY ONE, WHAT YOU LEARN SOMETIMES YOU SHOULD JUST TRY AND FORGET... ALSO JJ I CANT UNDERSTAND WHAT YOU ARE TYPING SORRY

11-24-2007, 11:52 AM	#18 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 5,432	'Z'okay 'Busa. I get that alot. N' most'a the time, if ya don't gedditt the first time . . . unlike certain, much appreciated Holiday birds, it ain't worth goin' back fer seconds. Be well n' good luck, Java __________________ In life-long pursuit of that most mythic of beasts: the ever-elusive perfect corner. Well . . . that, r' at least a whole lodda clear spin-out room.

11-24-2007, 12:42 PM	#19 (permalink)
jagg Senior Member Join Date: Sep 2007 Location: The Endless Mountains Posts: 2,520	apologies, i wasn't reading everything. best regards, jagg

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