Thanks Alex! Great info. I have a DG head on my otherwise stock '80. Will be getting a 34 mikuni soon
...Van
| Vintage Dirt Bike Q & A https://vintagedirtbikeforums.alp-sys.com/ |
|
| 1980 CR125 carb. https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=1653 |
Page 1 of 1 |
| Author: | Dos Rios [ Mon Nov 26, 2007 9:54 am ] |
| Post subject: | 1980 CR125 carb. |
What would be the best carb. to run on my CR125 1980? Looking to race this bike next season. It currently has the stock Kiehen. Thanks |
|
| Author: | spuncrazy [ Mon Nov 26, 2007 1:34 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
The stock Kiehen is a 34mm. I have better luck with the round slide Mikunis. I run 34mm on my (3) 79 CR125s. I also have (2) 80 CR125s that I will start with the Mikuni 34mm. These should be easy to jet and fast enough. If you are an expert, and can WFO all around the track, then port and get a Mikuni 34mm carb opened up to 35-35.5mm so it will still fit in your intake tube. Are you going to race CALVMX next year? ALex |
|
| Author: | frohrs [ Mon Nov 26, 2007 3:45 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
18 bikes? That's a full gate! |
|
| Author: | spuncrazy [ Mon Nov 26, 2007 4:18 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
Forrest, (3) of thoses were yours. |
|
| Author: | Dos Rios [ Mon Nov 26, 2007 8:10 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
Yep, I do plan on racing CALVMX series and Ahrma next year. |
|
| Author: | Van/TX [ Tue Nov 27, 2007 1:27 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
spuncrazy wrote: I run 34mm on my (3) 79 CR125s Would you mind sharing your jetting set up for those? Thanks...Van |
|
| Author: | spuncrazy [ Tue Nov 27, 2007 2:48 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
On (2) of them I just used the stock jetting a 260 main I believe, One of the bikes has a DG head, every thing else is stock. I did lower the clip on the needle a notch or 2 when I was at the track. I only run these at the track. You do have to keep the motor on the pipe, but it hauls when you do. The last one has a 250 main with every thing else stock. This is my practice bike. The (2) 1980s are just being finished so I have not run them yet. Stock motors, so I will start at the stock 34mm and see how they runs. Alex |
|
| Author: | Van/TX [ Tue Nov 27, 2007 3:02 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
Thanks Alex! Great info. I have a DG head on my otherwise stock '80. Will be getting a 34 mikuni soon ...Van
|
|
| Author: | spannerman167 [ Wed Nov 28, 2007 3:29 pm ] |
| Post subject: | Re: 1980 CR125 carb. |
I'm running a 35mm Keihin off the 81 model. I had to modify the rear most overflow pipe by curving it down and I took a couple of mm off the face of the inlet end so the ridge in the inlet boot lined up with the carb groove. Other than that a good fit still experimenting with the jetting but it goes really well. |
|
| Page 1 of 1 | All times are UTC - 7 hours [ DST ] |
| Powered by phpBB® Forum Software © phpBB Group https://www.phpbb.com/ |
|