Keister's 400X build - VIDEO - Page 8

[keister]

Taking a longshot and thinking you have an exhaust leak somewhere??

I should hope not. I paid big money for HMF Engineering to build and install a custom exhaust system. But no, it's tight! Check out the pics on Page 8 - post #113.

Has the oring on the intake been changed?May look good but may leak also.What gives with these 350X's and jetting problems lately.Is the pilot port definately open?

Oring on the intake?? This is a crate motor and a crate carb. Both brand new. Maybe I misunderstand your question.

[jays375]

No.Didn't see the part about it being a crate motor.

[Louis Mielke]

In that case if the oping is happening in the lower rev range I'm still leaning towards the needling being lean, trying moving the clip down to the next lower clip, that will richer it up. I would aso agree with DC, you may need a larger pilot. I would try the needle first.

Ya, I guess so. Thing is, I never really listened for exactly WHEN it was happening.
Upon further review, the backfiring happens when the RPMs are almost all the way back down. Doesn't really happen as soon as I let off the gas. It happens when it is almost back down to idle. It still did this last night.

[keister]

It has been a while, but I have had it out for a few test rides this spring. These were harsh condition, abusive trail rides.
It is now dialed in. Everything is spot on, and it doesn't miss a beat. Thanks to all for the advice.

Turns out that one big issue was when I sat on the seat it shorted out my CDI. I relocated that to the inside of the airbox and it has run prefectly ever since.

I am going to put this trike through the paces this summer. SnakeFest next weekend, Hatfield McCoy next month, hopefully Rose City in summer and surely a few rides in between. I will try to keep this thread updated with some ride reports.

The best news is that I have replaced so many parts since the original teardown, that I now essentially have my original 350X sitting on my shelf. I will be putting that back together soon. You can never have too many!!

Speaking of which, I just moved recently...... here's a teaser shot from my the basement at my new house.

[keister]

Updated pictures now with Cheetah tires all around.
First time I have ridden it in a long time (got hardtail fever).
Actually Matt's350X was the last to take it for a spin at Rose City.
Maybe he can give a quick ride report if he wants.

I did take it around the yard a few times after I put the new rears on.
I think I am going to lower the front end an inch or 2 again.
That will level it a little better with the 20's on the rear.
So far I am very happy with the Cheetahs.

[ATC-Eric]

Man I gotta get me some of those tires. Looks really good man.

[Russell 350X]

Looking good Peepers!


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[CRAZY70MAN]

Ahh ya peepers...smellin that x at summit indoor?

[atctim]

Looks great with those tires on there. Cheetah upped the bar for trikes in the OEM looking tire department.

[oldskool83]

$500 for a full system is not bad. I'd see if you could get them to start selling. Some systems are in upwards of $700.