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Ported 4mm or Ported stock stroke


gregrob

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Ok guys, I am planning to send my cylinders to Herr Jugs very soon.

 

I have the mods in my sig and the bike runs great, starts good, has good power and moves me around pretty good in the dunes. (I'm a big guy pushing 300lbs).

 

 

Since I wanted to take the next step and get porting, I figure since I'm already paying for porting, and already buying a piston kit, this would be the perfect time to do it.... Only the cost of the crank and domes is added.

 

 

I'm just having trouble tearing down a perfectly good running bike to do this, but it is an 02 and could use a freshening up anyway I guess.

 

 

Oh, and I have 3 weeks to do this, want it to be ready for memorial day. Kevin said he could turn my cyls around in 2 weeks so I'm going to get them sent out ASAP.

 

 

Let me know what you guys would do.

 

Just get porting?

Go ahead for the 4mm?

 

or, leave it alone and ride it?? :down:

 

 

Thanks,

 

 

Greg

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I would just do the 4mil, many times a cylinder ported for stock stroke cannot be ported again to work with the 4mil crank. Kevin Herr will be able to give you all the details with his porting for both stock and 4mil. I would just do the 4mil now and let it rip.

 

I understand the pain of tearing into a good running engine as well, but the 4mil with a nice port will help with that 'fo sho!'

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Yep...it's probably not much extra time or money (if any) to go to a 4 mil.

It's a great, great overall running motor.

 

It's not going to be a huge improvement, but...stroker motors have a little more legs on them than stock stroke.

 

I got buddies with stock stroke and 4 mil cubs (I know, different cylinders....but hear me out).

They've ridden my 10 mil and commented right away how much it really starts pulling hard and it's easier to ride rather than damn near burn the clutch out with a smaller stroke motor....

 

More forgiving, more power everywhere....if you have the coin to do it, now is the time!!

Done with porting, a 4 mil drop in is a great mod!!!

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Greg...I was in the same situation you are at last June only I had to get a new crank. I am glad I went the 4mil route but also remember all the little extra things you need along with the crank like...

seals, pancake bearing upgrade?, Impeller upgrade?, clutch upgrade?, basket upgrade?, case porting? ect...

These were the "little" things that added up that I wasn't expecting...my thought was, since it was apart might as well make sure every little thing was good to go!

Not trying to sway you not to do it...but if your on a budget, keep these in mind!

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Well, it has begun. Got the cyls pulled tonight. (actually bigred had them off before I even got home haha!) and they will be sent out tomorrow.

 

Gathering the little knick knacks like reeds, clutch, pancake, shift pro, etc while the cyls are being ported and will be ready to drop the 4mil crank in and get her up and running soon.

 

Wish us luck!

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Well I got the cylinders shipped out to Kevin today.

 

Split the cases and CLEANED them for hours to get them sparkly.

 

My buddy ported the reed cages for me.

 

That's all for now!

R ya goin big or what! The 4 mil will eat a clutcth bro. Get the lockout now, save some hassle down the road...

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Well I got the cylinders shipped out to Kevin today.

 

Split the cases and CLEANED them for hours to get them sparkly.

 

My buddy ported the reed cages for me.

 

That's all for now!

I just got back from kevins,He really does great work...I will prolly see your cylinders next week....Good luck with the rest of your build...You wont be disapointed!

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