My 350x engine mod thread.

[random-strike]

um....no......i milled the piston

makes sense

[jsimonh]

Well I started to take the side cases off. One side has a bolt broke off where the oil filter goes. It was like that when I bought it and oil leaks out of it slowly. The other side is coming off because of a slow leak at the shifter plus I have to take it off to put the new flywheel on.

When I got the flywheel side opened up I seen a horrible sight. I don't know how this happend, but look at the condition of the stock flywheel .



Will a normal metic bolt work to get this flywheel off? I have read that you can use the axle, but I only have the one and I'm not wanting to take it out. Any ideas why it got so rusty?

[Dammit!]

20 yrs. of condensation. Not that unusual.

[jsimonh]

20 yrs. of condensation. Not that unusual.

Thanks for the insight . When I did my old AutoX and TriZ, and just recently the Tecate none of them was like that, so I didn't know they could get that bad.

What I do know is that the rust isn't helping to get the dang thing off!

[NOS_350X]

Lookin good so far. Sounds like your engine already had some work done to it previously. For the flywheel i used Oil filter remover to hold it and an impact to zip it right off. Watch out i think it might have been reverse threaded.

About the cam, the duration is probably longer on the exhaust and the lift isnt as high.

Since you got it appart why dont you have me port it??

[jsimonh]

Lookin good so far. Sounds like your engine already had some work done to it previously. For the flywheel i used Oil filter remover to hold it and an impact to zip it right off. Watch out i think it might have been reverse threaded.

About the cam, the duration is probably longer on the exhaust and the lift isnt as high.

Since you got it appart why dont you have me port it??

I was wondering when you was going to chime in!

Thanks for clearing the cam up.

I just got back from the farm, where we were able to get the old flywheel off . I noticed that the inside (where the magnets are) is smooth, and the one I had lightned seems to have small ridges. They are constant all the way around and the same length apart, but it isn't smooth to the touch. Any thoughts?


There seemed to be a little oil in the flywheel area, I'm not sure if I got a bad seal or not. Does it go in from the outside or from the inside of the case?

My little freshen up the topend has turned into a helluva project.

[NOS_350X]

I was wondering when you was going to chime in!

Thanks for clearing the cam up.

I just got back from the farm, where we were able to get the old flywheel off . I noticed that the inside (where the magnets are) is smooth, and the one I had lightned seems to have small ridges. They are constant all the way around and the same length apart, but it isn't smooth to the touch. Any thoughts?


There seemed to be a little oil in the flywheel area, I'm not sure if I got a bad seal or not. Does it go in from the outside or from the inside of the case?

My little freshen up the topend has turned into a helluva project.

Ive ran accrost several flywheels like the one you had lightened. They work fine, but i am not shrue of the diffrence yet from the others. With the oil in your flywheel area i woudnt worry about, who knows where it came from or how long it has been there. Rember you still have that option of having me port your engine. but anyways looks like everything is going somewhat smooth, but with that 12:1 piston you took out it probably would have been a good idea to run race gas.

[Klondike1020]

Thanks guys, My major debate on the piston was reliability. I think this is about as far as I want to go. If a stroker motor wasn't always talked about as a "tme bomb" I might look into it. Maybe in the distance future?

.

I dont know specifically about 350X

but i built a stroker outta a XR200 bottom end and 250 top end
it was ballsy and it lasted years before i crashed it and broke the crank case
not ot mention it was an 85 Dual carb dual exhaust

that top end would make a hell of a 200x

but my stroker wasnt a tikin bomb it was a missle

[threewheelin-feelin]

sweet man...im planning on doing the same to my 350x here soon...i plan on doing a .20 over 10.25 to 1 wiseco piston...bolt in race cam and new gaskets along with a pipe...jet kit...and k&n filter... hope to start buying stuff soon but this rear end rebuild on my truck is kicking my ass lol

[jsimonh]

Ive ran accrost several flywheels like the one you had lightened. They work fine, but i am not shrue of the diffrence yet from the others. With the oil in your flywheel area i woudnt worry about, who knows where it came from or how long it has been there. Rember you still have that option of having me port your engine. but anyways looks like everything is going somewhat smooth, but with that 12:1 piston you took out it probably would have been a good idea to run race gas.

Well the guy that I bought either didn't know about the piston or didn't think to tell me about it. Do you think the one I just took out is a 12 to 1? My new piston should be in today and I'll be able to compare them. On the porting, if I decide to do it I'll give you a call . I don't think that's a mod I want to mess with right now. My deadline is this coming weekend so I can hopefully attend a trip to Little Sahara.

but my stroker wasnt a tikin bomb it was a missle

I'm not saying it's a bad idea or anything, but missles are built to explode .

sweet man...im planning on doing the same to my 350x here soon...i plan on doing a .20 over 10.25 to 1 wiseco piston...bolt in race cam and new gaskets along with a pipe...jet kit...and k&n filter... hope to start buying stuff soon but this rear end rebuild on my truck is kicking my ass lol

It has been alot of fun and frustration, but I think it will be worth it in the end. I also know what your going through with the truck rear end. Good Luck!

[3WW Star-Yamahondaman]

I'm not sure about them Ridge Things in the Fly Wheel...maybe a diff. yr. ?

[Louis Mielke]

Lookin good so far. Sounds like your engine already had some work done to it previously. For the flywheel i used Oil filter remover to hold it and an impact to zip it right off. Watch out i think it might have been reverse threaded.

About the cam, the duration is probably longer on the exhaust and the lift isnt as high.

Since you got it appart why dont you have me port it??

I was kinda curious. What kinda of port work do you do on the 350x head? Any example pictures/ maybe a brief description. Don't worry, don't expect you to give away your secrets.

[jsimonh]

I'm not sure about them Ridge Things in the Fly Wheel...maybe a diff. yr. ?

That's what I was thinking, but I don't know. It has strong magnets and seems to be real solid so I'm not worried about it, I was just curious.

[3WW Star-Yamahondaman]

As long as the inside Dia. Don't hit the Stator........ GO FOR IT !!!

[jsimonh]

As long as the inside Dia. Don't hit the Stator........ GO FOR IT !!!

That's what I'm talking about!

Look what was at my door when I got home wallago.


Looks like things will be shaping up TONIGHT!
I hope everything goes back together as easy as it came apart , and I don't have any bolts left over .