Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: Suzuki TS250/185 on April 02, 2012, 03:09:17 AM

Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Suzuki TS250/185 on April 02, 2012, 03:09:17 AM
http://motocrossactionmag.com/Reviews/News/MXA-TEAM-TESTED-DICKS-RACING-INTELAJET-CARB-MOD-8464.aspx
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Jeram on April 02, 2012, 06:20:13 AM
might have to ask around regarding that mod.

I wouldnt mind installing it on my PWK 39/41.5 oval bore.

but Id been keen to see whether the supercharger effect is just the larger carb, and whether the same fueling can be acheived through the powerjet.

but I like the idea of being able to adjust the mixture on the fly... extend that adjust up to the handlebars, would be really good then!
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Jeram on April 02, 2012, 07:10:46 AM
I re-read the article on it.

It sounds more like a paid advertisement than a real test/review.

supercharger :P


It sounds to me more like a lazy mans power jet.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: factoryX on April 02, 2012, 07:23:12 AM
That as well, but we have to remember that even with the 250sx running a 36mm carb its still pulling 50hp stock. With pipe 54-57hp? Jesus. Why touch it?
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: TMKIWI on April 02, 2012, 09:07:50 AM
Quote from: factoryX on April 02, 2012, 02:23:12 PM
That as well, but we have to remember that even with the 250sx running a 36mm carb its still pulling 50hp stock. With pipe 54-57hp? Jesus. Why touch it?

You wont get an extra 4-7Hp from just a pipe.
Besides, dont you think the stock pipe might be pretty good anyway.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Jeram on April 02, 2012, 09:39:53 AM
Quote from: TMKIWI on April 02, 2012, 04:07:50 PM
Quote from: factoryX on April 02, 2012, 02:23:12 PM
That as well, but we have to remember that even with the 250sx running a 36mm carb its still pulling 50hp stock. With pipe 54-57hp? Jesus. Why touch it?

You wont get an extra 4-7Hp from just a pipe.
Besides, dont you think the stock pipe might be pretty good anyway.


+1

with a custom made big belly pipe and a 39mm carb you'd be lucky to get that.
remember, that 57rwhp is approaching super kart territory, theres alot more work than a pipe and a carb on those monsters.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: 2T Institute on April 02, 2012, 10:41:06 AM
It's just a powerjet. Problem is high rpm causes a over rich condition killing the over rev, hence why the solenoid controlled power jet was in vented.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: factoryX on April 02, 2012, 12:06:04 PM
Could have sworn there was a quote from MXA stating those figures with a PC (Pro Circuit) pipe..
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Jeram on April 02, 2012, 02:16:09 PM
Quote from: factoryX on April 02, 2012, 07:06:04 PM
Could have sworn there was a quote from MXA stating those figures with a PC (Pro Circuit) pipe..

and after reading an article by the same magazine where they describe a modification like this as "supercharging", you still believe their claims about the pro-circuit pipe?
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: factoryX on April 02, 2012, 06:52:24 PM
 ;D
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: lauterbacher on April 02, 2012, 06:55:17 PM
My problem with the article is that there constantly checking every mod there is with a four stroke and then dynoing it. Well if this intellijet mod and bored carb was so fantastic you would think there would have been a Dyno test to back up results. If I was the Mfg of it and it worked as advertised I would have even paid for the Dyno.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Super Trucker on April 02, 2012, 10:23:35 PM
You could just borre the stock carb too for just 80 bucks. The 38mm carb on my 125 is borred out to 40mm, you wouldn,t believe how much more fuel it burns.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: eprovenzano on April 02, 2012, 10:40:40 PM
Quote from: Super Trucker on April 03, 2012, 05:23:35 AM
You could just borre the stock carb too for just 80 bucks. The 38mm carb on my 125 is borred out to 40mm, you wouldn,t believe how much more fuel it burns.

Super Trucker, I'm curious...  does the bigger carb give more top end, at the expense of less bottom end? Example your 125...  with the carb borred to 40mm, does it have more top end / over rev, and reduces what low end it had? 
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Super Trucker on April 02, 2012, 11:16:12 PM
I had the porting and carb borred at the same time, on the 04 cr125. The bottom end was dead,stock and ported.JM racing engines are ported to have a very strong and wide midrange that goes to 1,500 rpm below the top rpm. The way the engine was built, it hits alot harder then has a strong pull to the top,just revs with no pull the last 1,500 rpms. I hope that makes sense. I would like to try the 40mm carb on the stock 06, that should  soften the bottom end, then pull harder in the midrange with a bit more topend. I put bigger carbs on other 125,s before, the bottom end is less, stronger midrange with a little more topend.
Title: "On The Mainjet" Interesting Tuning Product gets Rave Review in MXA...
Post by: Jeram on April 03, 2012, 03:58:23 AM
you can bore the pwks out to 41.5 :)

even better than 39 haha