Daytona 1200 above 5000 revs - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
T3 Sport / Touring Forum For the discerning Hinckley Sporting Enthusiasts. Open to all lovers of the original T3 Sport Models including the Trident, Sprint, Sprint Exec, Daytona, Trophy, and Speed Triple.

 11Likes
Reply
 
LinkBack Thread Tools Display Modes
post #11 of 23 (permalink) Old 08-19-2019, 06:02 AM Thread Starter
Minitwins
Main Motorcycle: Gs1100g
New Member
 
Join Date: Jul 2019
Location: Perth Wa
Posts: 20
Other Motorcycle: Srad 750
Extra Motorcycle: 80 gsx1100. 1990 gsxr750
Does anyone know if 1200 trophy carbs are the same? as in diaphrams and slides, wondering if this would be a cheap option? obviously will be jetted to suit.??
sukzuki is offline  
Sponsored Links
Advertisement
 
post #12 of 23 (permalink) Old 08-19-2019, 12:46 PM
Minitwins
Main Motorcycle: 96 !200 Trident
New Member
 
Join Date: Jul 2019
Location: Leaving Apple Valley, CA going to Pinetop, AZ
Posts: 18
Other Motorcycle: 98 Sprint
Hi Dan, Well that is a surprise. I was sure it was the valve timing. That would have been a cheap and easy fix. Now what? Carbs?
The 1200's used the same Mikuni carbs thru the model run. The 900's also used the Mikunis up until 1998-1999. Then they went to Keihin carbs. I had Keihin carbs on my 900 Trophy for about a year, too civilized. Even the 900 carb parts swap out with the 1200's, but the linkage is different. I don't understand why the main jets are so much bigger on the 900's. 125's compared to 110's. Probably it's a milder cam. How many miles do you you have on those 1200 carbs? If over 60,000 the needle jet tubes would no longer be round. But it wouldn't be the cause of the lack of revs. I think the problem is coming down to 2 causes. The vacuum slides aren't coming up, or you've got a bad CDI box.
I have two extra 1200 CDI boxes, but they are impossible to get to right now. They are in the shipping boxes that has been sent to Arizona. I'll be leaving California soon.
sukzuki likes this.
Greg96Trident is offline  
post #13 of 23 (permalink) Old 08-20-2019, 07:55 AM Thread Starter
Minitwins
Main Motorcycle: Gs1100g
New Member
 
Join Date: Jul 2019
Location: Perth Wa
Posts: 20
Other Motorcycle: Srad 750
Extra Motorcycle: 80 gsx1100. 1990 gsxr750
Thanks to the response from everybody so far, really help full and narrowing it down.

Will concentrated on carbs at this stage because slides just don't feel right.
Will go to the wreckers and suss out if i can replace slides and the bodies they slide in, from some gsxr750/1100 carbs as i cant find daytona carbs over here.
Does anyone have jetting specs or a link of where to find what factory settings were?
bike does have 60,000kays so if factory will presume they are worn but want to make sure what goes back in is as per factory.
Cheers
sukzuki is offline  
 
post #14 of 23 (permalink) Old 08-20-2019, 08:12 AM
SOTP Vintage Series
Main Motorcycle: '98 T595 Daytona
Senior Member
 
Join Date: Mar 2011
Location: Northern NJ US
Posts: 7,195
Other Motorcycle: 2014 Ninja 1000ABS
Are the carb piston slides metal or plastic? If metal, you can polish them to smooth the action. Just a thought,
sukzuki likes this.
Felony is offline  
post #15 of 23 (permalink) Old 08-20-2019, 04:37 PM
Site Supporter
World SuperBike
Main Motorcycle: 03 Sprint; 97 Trophy 1200
Lifetime Premium
 
Join Date: Dec 2007
Location: Southern California
Posts: 2,250
Other Motorcycle: 04 Ducati 999S; 12 Diavel
Extra Motorcycle: 1974 Norton Commando S3
sukzuki - before you go to a lot of effort and assuming you haven't tried this already, I would open the gas cap and try getting it to rev above 5K. If the vent holes are partially clogged, it may not be flowing sufficient fuel. It is an easy test and simple fix if it solves your problem.
sukzuki likes this.

The people who talk the most generally have the smallest results. Results speak for themselves. - Matt Mladin

Coroja is offline  
post #16 of 23 (permalink) Old 08-21-2019, 07:41 AM Thread Starter
Minitwins
Main Motorcycle: Gs1100g
New Member
 
Join Date: Jul 2019
Location: Perth Wa
Posts: 20
Other Motorcycle: Srad 750
Extra Motorcycle: 80 gsx1100. 1990 gsxr750
ok Coraja will try what you said > thanks.
Carb slide and bodies are plastic Felony so no can do on that one.
Cheers peoples.
sukzuki is offline  
post #17 of 23 (permalink) Old 08-21-2019, 08:24 PM
Minitwins
Main Motorcycle: 96 !200 Trident
New Member
 
Join Date: Jul 2019
Location: Leaving Apple Valley, CA going to Pinetop, AZ
Posts: 18
Other Motorcycle: 98 Sprint
Hi Dan, I'm still thinking about this one. I've got an air compressor and if I blow air at the air inlets above the Venturis the slides will come up. If you lift the slides up they come back down when released but they don't snap back down, they just gently come down. There are fuel vents on the top on the carbs. Usually there is a hose coming off each vent. I used T connectors and tied those fuel vents together into one vent hose. Are the vents clogged? The only other thing I can think of is the condition of the diaphragms.
My other thought is why does it top out at 5 grand no matter what gear it is in? Or am I incorrect on this point? If that is true it seems as if it is a CDI box problem. It wouldn't take much throttle to get past 5 grand in 1st gear. My 1200 Trident used to be a 1200 Trophy. It's the bike Triumph should have built. The CDI box is under the seat. For some weird reason I have 2 more CDI boxes, I don't know how I got them. I'm over 70 and my memory ain't what it used to be. To be honest it never was much good. Anyway, one of the boxes has the ears and it is mounted in the fairing behind the headlights. The other has no ears and is mounted under the seat. Does that mean it is for a Daytona? I don't know, maybe the single headlight Trophy in 1995. Would you be interested in one of the CDI boxes. Send me a private email.
Greg
sukzuki likes this.
Greg96Trident is offline  
post #18 of 23 (permalink) Old 08-31-2019, 06:13 AM Thread Starter
Minitwins
Main Motorcycle: Gs1100g
New Member
 
Join Date: Jul 2019
Location: Perth Wa
Posts: 20
Other Motorcycle: Srad 750
Extra Motorcycle: 80 gsx1100. 1990 gsxr750
ok, been a while
went for a ride with open gas lid and made no difference.
went to the wreckers and got some diaphram slides out of similar carbs, fitted, slide up and down nicely, similar to all the other carbs i have in the shed and smother in operation than originals.
Made no difference to the ride though, basically at 5500 it starts breaking down and feels like it only runs on 2. thoughts? should i start considering electric side of things?
ive pulled needle jets out of carbs, there are no markings on it. Does anyone have carb jetting specs for these please?
sukzuki is offline  
post #19 of 23 (permalink) Old 08-31-2019, 02:33 PM
Minitwins
Main Motorcycle: 96 !200 Trident
New Member
 
Join Date: Jul 2019
Location: Leaving Apple Valley, CA going to Pinetop, AZ
Posts: 18
Other Motorcycle: 98 Sprint
Hi Dan, It has got to electrical at this point. Main jets are big enough that they never clog up and besides the needle is going up & down thru it constantly. Will it rev up to 6 or 7 grand in neutral?
Can you borrow somebody's 1200 CDI box? A 900 CDI box won't work.
Greg
sukzuki likes this.
Greg96Trident is offline  
post #20 of 23 (permalink) Old 08-31-2019, 09:12 PM
SuperStock
Main Motorcycle: 2004 Daytona 955i
Senior Member
 
Join Date: Apr 2019
Location: Sydney, Australia
Posts: 252
Other Motorcycle: 2006 1050 Speed Triple
Extra Motorcycle: Vespa PX200
Quote:
Originally Posted by Greg96Trident View Post
Main jets are big enough that they never clog up and besides the needle is going up & down thru it constantly.
The needle does NOT go up and down through the main jet. And they are not 'big enough that they never clog up'.

Perhaps you meant to say needle jet (also called emulsion tube esp. if holes drilled along its length).
sukzuki likes this.

Last edited by Terry Colley; 09-02-2019 at 01:22 AM.
Terry Colley is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options
All posts must adhere to Forum Rules

Register Now



In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome