Advice on what I've done so far ???
03-02-2010, 08:14 PM
#1
Junior Member
Squid
Thread Starter
Join Date: Feb 2010
Posts: 13
Advice on what I've done so far ???
Thanks for reading
Picked up my first 01 Vtr. Love many things about it but the PO tinkered with it so I,m trying to straighten some things out.
Installing Hindle Low mounts and cleaning carb up. Sat for a year and idle was crap. So far found the carbs were completely loose in the grommets it has the dreaded K&N.
Figure if I'm installing the pipes I'd go with 1 up on the Pilot and shim Mod for the stock needles. I have the PO's dj kit but the reviews are averagely bad and the one needle looks rotten at the bottom. I'm considering removin/ Blocking the Pare system to avoid any decel backfires. PO complained that was why he was not running the pipes. I want the sound.
question?
Is one up on the pilot going to be enough
.4 shim okay enough
Recommended to block off the pare while I'm in there
Race mechanic/ engine builder recommend not touching the mains 175/178 just yet. Said 9 outa 10 backfire issues is a lean slow circuit, leaking exhaust gaskets or the pare causing issues.
Any similar problems and fixes i would love to hear before I bolt her back together.
Great forum by the way
jason
Picked up my first 01 Vtr. Love many things about it but the PO tinkered with it so I,m trying to straighten some things out.
Installing Hindle Low mounts and cleaning carb up. Sat for a year and idle was crap. So far found the carbs were completely loose in the grommets it has the dreaded K&N.
Figure if I'm installing the pipes I'd go with 1 up on the Pilot and shim Mod for the stock needles. I have the PO's dj kit but the reviews are averagely bad and the one needle looks rotten at the bottom. I'm considering removin/ Blocking the Pare system to avoid any decel backfires. PO complained that was why he was not running the pipes. I want the sound.
question?
Is one up on the pilot going to be enough
.4 shim okay enough
Recommended to block off the pare while I'm in there
Race mechanic/ engine builder recommend not touching the mains 175/178 just yet. Said 9 outa 10 backfire issues is a lean slow circuit, leaking exhaust gaskets or the pare causing issues.
Any similar problems and fixes i would love to hear before I bolt her back together.
Great forum by the way
jason
03-02-2010, 09:12 PM
#2
Senior Member
SuperBike
Join Date: Feb 2007
Location: Portland, Oregon
Posts: 1,051
i've been down the pilot jet road and just as many have said i returned to the stock #45 and 2.5 to 2.75 turns out.
i'm running 178/180 mains and have good color on the plugs ( checking after track days ).
adding a shim to the stock needle has worked for many people...
tim
btw: yes remove the PAIR plumbing & check the TPS. i couldn't tell if your removing the DJ kit or just
have it in hand ? the DJ kit requires a hole drilled in the slides that will be to be plugged if returning to the stock needles.
i'm running 178/180 mains and have good color on the plugs ( checking after track days ).
adding a shim to the stock needle has worked for many people...
tim
btw: yes remove the PAIR plumbing & check the TPS. i couldn't tell if your removing the DJ kit or just
have it in hand ? the DJ kit requires a hole drilled in the slides that will be to be plugged if returning to the stock needles.
Last edited by trinc; 03-02-2010 at 09:17 PM.
03-03-2010, 07:07 AM
#4
Junior Member
Squid
Thread Starter
Join Date: Feb 2010
Posts: 13
thanks for the feedback and insight folks.
PO had the dj kit and removed it, I could see where the slide hold was drilled and now plugged. the fact that the carbs were loose and the 45 pilots were obstructed, likely is my rough idling issues.
I though I might be able to just put marbles in the pair houses and leave it as that. Is flipping the reed thingy the Vtr way. My chum just put the "Marble mod" in his busa and it cured backfire and flames.
Will look into setting the tps, haven't yet.
thanks again.
Jason
PO had the dj kit and removed it, I could see where the slide hold was drilled and now plugged. the fact that the carbs were loose and the 45 pilots were obstructed, likely is my rough idling issues.
I though I might be able to just put marbles in the pair houses and leave it as that. Is flipping the reed thingy the Vtr way. My chum just put the "Marble mod" in his busa and it cured backfire and flames.
Will look into setting the tps, haven't yet.
thanks again.
Jason
03-03-2010, 07:18 AM
#5
2nd mouse gets the cheese
SuperBike
Join Date: Jan 2008
Location: Beaverton, OR
Posts: 1,697
from all the vtr's I have worked on I can tell you they are all definitely different no one setup is a guarantee to work perfectly. However I think most vtr's don't need to have the pilots switched.
Also another thing to note. You have alot of ideas of things to change. I would caution you to try the most likely stuff first then if the desired result is still missing take it one step at a time until the problem is fixed. So for instance no reason to throw in different mains when you have an idle issue. No reason to fiddle with the pilots when the carb boots are loose. Button everything up test then tune. Also on the dynojet kit, the hole doesn't need to be filled if the stock needle is used it needs to be filled if the stock spring is being used. I ran my carbs for a brief time with stock needles and DJ springs with the hole in slide and it ran the same as the same setting on the DJ needle.
DJ spring is aprox 8 in
Stock Spring is aprox 12 in
Also another thing to note. You have alot of ideas of things to change. I would caution you to try the most likely stuff first then if the desired result is still missing take it one step at a time until the problem is fixed. So for instance no reason to throw in different mains when you have an idle issue. No reason to fiddle with the pilots when the carb boots are loose. Button everything up test then tune. Also on the dynojet kit, the hole doesn't need to be filled if the stock needle is used it needs to be filled if the stock spring is being used. I ran my carbs for a brief time with stock needles and DJ springs with the hole in slide and it ran the same as the same setting on the DJ needle.
DJ spring is aprox 8 in
Stock Spring is aprox 12 in
03-03-2010, 07:44 AM
#6
Junior Member
Squid
Thread Starter
Join Date: Feb 2010
Posts: 13
Oh. That's good info. thanks. I put the carbs back to stock, springs and all, just raised the original needle and figured one up on the pilot because i was adding the hindles. Removing the pair as well. Then I see where I'm at. PO took pipes off cause ofthe way he ran. Which was
pipes, 180/185 dj needle 3rd clip, dj spring. lots of flames and backfires.
Figured I'd give the hawk a fresh start and go from there.
pipes, 180/185 dj needle 3rd clip, dj spring. lots of flames and backfires.
Figured I'd give the hawk a fresh start and go from there.
03-03-2010, 09:55 AM
#9
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SuperBike
Join Date: Dec 2005
Location: South Lake Tahoe, CA, USA
Posts: 1,689
I ran the #48 pilots and it got rid of decel popping for me, with TBR exhaust cans and later a full exhaust system. I had already removed the PAIR, by turning the reed over.
Some people like the K&N filter, but it does require rejetting the mains.
With stock jetting, go with a stock filter. I ran dynojets with a stock filter and set the needles to get rid of the 3-4k stumble.
I had a problem with the engine falling on it's face at high altitude (>7000 ft) and dropped the main jets one size. But doing that made it lean at sea level. It was a compromise for me, because I did a lot of riding in the mountains.
Some people like the K&N filter, but it does require rejetting the mains.
With stock jetting, go with a stock filter. I ran dynojets with a stock filter and set the needles to get rid of the 3-4k stumble.
I had a problem with the engine falling on it's face at high altitude (>7000 ft) and dropped the main jets one size. But doing that made it lean at sea level. It was a compromise for me, because I did a lot of riding in the mountains.
03-03-2010, 10:07 AM
#10
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MotoGP
Join Date: Apr 2005
Location: Montreal
Posts: 5,631
03-03-2010, 10:12 AM
#11
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Squid
Thread Starter
Join Date: Feb 2010
Posts: 13
I going to have to maybe track a stock filter down. This one doesn't say K&N anywhere it's just has red filter material and , well it looks just like any filter I know is a K&N. No honda dealer around here, have to look for regular paper, aftermarket maybe.
RCVTR when you had just the cans, did you change the mains during, leave stock or change after you had any issues. Just wondering if you ran it with stock jets and what you learned.
RCVTR when you had just the cans, did you change the mains during, leave stock or change after you had any issues. Just wondering if you ran it with stock jets and what you learned.
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