Has anyone on here done this mod? And if so, was there any noticable performance increase?
Go to Web page below - Tech Tips - Scroll down to "Float bowl vent mod in pictures" and click on links.
http://homepage.ntlworld.com/webzxr/zxr750r/
Cheers. Jed
Float Bowl Vent Modification ZXR?
-
greenman43
- KSRC Regular
- Posts: 675
- Joined: Fri May 06, 2005 10:01 pm
- Bike: ZX6R
- State: New South Wales
- Location: Brooklyn NSW
- Contact:
Re: Float Bowl Vent Modification ZXR?
Did it to my old ZXR-L3 way back when, didn't pick any performance improvement per se, but getting rid of ugly weight is always a plus.
Cheers,
Brian
Cheers,
Brian
07 ZX10R track 09 ZX6R road/track 93 ZXR750 race 89 GPZ900 project
Do not walk behind me, for I may not be leading
Do not walk in front of me, for I may not be following
Do not walk alongside me, for the path may be narrow
Just piss off and leave me alone
Do not walk behind me, for I may not be leading
Do not walk in front of me, for I may not be following
Do not walk alongside me, for the path may be narrow
Just piss off and leave me alone
-
tomithy
- KSRC Member
- Posts: 124
- Joined: Mon Apr 03, 2006 2:50 pm
- Bike: ZXR750
- State: Victoria
- Location: Melbourne
Re: Float Bowl Vent Modification ZXR?
Any tips on jetting Brian?
I gave it a shot when I first got the bike but couldn't get the jetting right so wacked it all back on. From what I've read it's meant to be an OMFG phenomenal improvement
I gave it a shot when I first got the bike but couldn't get the jetting right so wacked it all back on. From what I've read it's meant to be an OMFG phenomenal improvement
ZXR750 -> ZX7R. It's an addiction, I tell you.
-
greenman43
- KSRC Regular
- Posts: 675
- Joined: Fri May 06, 2005 10:01 pm
- Bike: ZX6R
- State: New South Wales
- Location: Brooklyn NSW
- Contact:
Re: Float Bowl Vent Modification ZXR?
Sorry, I did it around the same time as I mounted up FCRs, so can't help at all with jetting CVs 
Apologies,
Brian
Apologies,
Brian
07 ZX10R track 09 ZX6R road/track 93 ZXR750 race 89 GPZ900 project
Do not walk behind me, for I may not be leading
Do not walk in front of me, for I may not be following
Do not walk alongside me, for the path may be narrow
Just piss off and leave me alone
Do not walk behind me, for I may not be leading
Do not walk in front of me, for I may not be following
Do not walk alongside me, for the path may be narrow
Just piss off and leave me alone
-
adge82
- KSRC Member
- Posts: 175
- Joined: Sun Mar 19, 2006 10:55 am
- Bike: ZX9R
- State: Victoria
- Location: Shepparton VIC
- Contact:
Re: Float Bowl Vent Modification ZXR?
I did it on my old ZXR750.
I found it might have helped throttle response and helped fix a flat spot at around 3500-4000rpm.
I think its worth doing due to the fact its reversible and costs nothing (if you have crap lying around you can use).
I found it might have helped throttle response and helped fix a flat spot at around 3500-4000rpm.
I think its worth doing due to the fact its reversible and costs nothing (if you have crap lying around you can use).
-
yarrum
- Newbie
- Posts: 3
- Joined: Fri Sep 24, 2010 6:01 am
- Bike: ZX10R
- State: Queensland
- Location: Bribie Island, Qld
- Contact:
Re: Float Bowl Vent Modification ZXR?
I just did the carb bowl vent mod on my ZXR L3. I put a irrigation pipe 19 mm (I'm pretty sure it's 19mm) Tee from Bunnings in between the valve cover pipes and connected the third pipe back into the original airbox hole.
I ended up with a massive lean condition from 2.5K upwards. Man it was ugly. Spitting and popping and... I poked around on the net and found some advice about lifting the needle. I went to Jaycar Electronics and bought M3 (not M4) stainless and nylon washers and put two stainless ones under each needle. Drama solved. In fact the power kick I used to get around 7.5k prior to the change has wandered down to around 5k and I have more grunt from just off idle and upwards. I'm guessing it's running slightly rich and it's louder in the mid range but I like the kick I get.
Once I got them home and had a look at them I didn't end up using the nylon fellas. I didn't know what would be happening to them in the carby. I didn't want them mangled up and spread around the delicate bits. All I could see was pain down that path.
I think washers under the needle is a dodgy mod even though I like the result. My plan is to buy a few larger pilot jets and try them out. One day...
I just couldn't bring myself to put the Valve Dampener and Control bling back on the bike. I need a diet, but so does the bike and that was a good place to start...
I ended up with a massive lean condition from 2.5K upwards. Man it was ugly. Spitting and popping and... I poked around on the net and found some advice about lifting the needle. I went to Jaycar Electronics and bought M3 (not M4) stainless and nylon washers and put two stainless ones under each needle. Drama solved. In fact the power kick I used to get around 7.5k prior to the change has wandered down to around 5k and I have more grunt from just off idle and upwards. I'm guessing it's running slightly rich and it's louder in the mid range but I like the kick I get.
Once I got them home and had a look at them I didn't end up using the nylon fellas. I didn't know what would be happening to them in the carby. I didn't want them mangled up and spread around the delicate bits. All I could see was pain down that path.
I think washers under the needle is a dodgy mod even though I like the result. My plan is to buy a few larger pilot jets and try them out. One day...
I just couldn't bring myself to put the Valve Dampener and Control bling back on the bike. I need a diet, but so does the bike and that was a good place to start...
Have a great day