Well, my search for a builder is over... HOORAY 288!

[cus_deluxe]

Which one you guys outbid me on the 281 that just ended on fleabay?

Haha i was biddin on that, then forgot about it. Good thing, woulda ended up over $200 probly.

 

[MS290man]

Haha i was biddin on that, then forgot about it. Good thing, woulda ended up over $200 probly.

$168

 

[cus_deluxe]

Yep saw that, i was gonna bid $200, prob woulda kept goin. Woulda been nice to get 2 281 cylinders tho

 

[RIDE-RED 350r]

Exhaust port done. This cylinder is being set up to run with a BG delete.

Got exhaust set at 100 and widened to 65% of bore. Picked up a good amount of area. Should breathe nicely!

 

[RIDE-RED 350r]

Joe, you should post some pics of the two cylinders so others can see the difference in the stock ports.

How did I miss this??

Well, I'll get some pics of both tomorrow before I resume grinding on Dale's even though his exhaust port is now far from stock. Biggest difference seemed to be in the transfers anyway.

 

[traffic903]

Exhaust port done. This cylinder is being set up to run with a BG delete.

Got exhaust set at 100 and widened to 65% of bore. Picked up a good amount of area. Should breathe nicely!
View attachment 108302 View attachment 108303 View attachment 108304 View attachment 108305

Lovely.

 

[blsnelling]

Exhaust port done. This cylinder is being set up to run with a BG delete.

Got exhaust set at 100 and widened to 65% of bore. Picked up a good amount of area. Should breathe nicely!
View attachment 108302 View attachment 108303 View attachment 108304 View attachment 108305

Nice looking work.

 

[RIDE-RED 350r]

Thanks Brad! Really trying to do my very best on this one. It's the first cylinder I'm porting for someone else and I want it to be all he expects and more. I'm not finished with it yet so I'm still nervous...

Going to be starting on the transfers today.

 

[RIDE-RED 350r]

Well, I was able to raise the transfers to the target 120 at the intake end and maintained the factory slope of the window. I was able to give the windows a little more area by extending them toward the exhaust being careful not to angle them toward the exhaust. (Thanks Josh for spotting that @XP_Slinger) I'm limited by the tools I have at this time (yes, Dremel warriors!) and I am not able to work the transfers as much as I would like to. Josh and I are intending to invest in some tooling better suited to this kind of work soon.

Anyway, no more complaining...here are a couple pics. Pretty basic here with raising and increasing window area a touch. Wish is could do as pretty a job on those transfers as I can do on the exhaust and intake! Don't flame me too bad please, doing the best I can.

 

[RIDE-RED 350r]

Sorry bout the upside down pics...not sure how that happened...

 

[XP_Slinger]

Sorry bout the upside down pics...not sure how that happened...

Don’t stand on your head next time...lol

 

[RIDE-RED 350r]

Almost forgot, KS and Mahle cylinder showing the difference in the size of the transfers.

 

[RIDE-RED 350r]

Lowered the intake to 79 degrees and worked the window shape with the carb screw hole castings a bit. Used the depth gauge on my caliper to mark where the holes stopped to avoid cutting into the screw holes. The intake window retains some of it's wonky shape but I think I made some improvement there, or maybe it doesn't matter.

My last little batch of smalls I needed for my 288 are in at my local dealer, so I'll be running over there after work tomorrow to pick those up.

Test and tune on Dale's cylinder should commence this weekend!!!
HOORAY 288!

 

[Daserlon]

Looks great Joe. It'll be fun to watch your vids on comparing yours and Josh's saws.

HOORAAY 288!!!

 

[RIDE-RED 350r]

I think she's gonna run right well.

 

[XP_Slinger]

Guessing this will be my motivation to finally port my 288...lol

 

[RIDE-RED 350r]

AFTER we run it side x side with Dale's cylinder to establish a baseline to see what I managed to accomplish.

Still need to compare your KS and my Mahle with BG delete only too...

So holster those bananas for a bit longer! Lmao!

 

[XP_Slinger]

AFTER we run it side x side with Dale's cylinder to establish a baseline to see what I managed to accomplish.

Still need to compare your KS and my Mahle with BG delete only too...

So holster those bananas for a bit longer! Lmao!

You’re not the boss of me...

 

[RIDE-RED 350r]

 

[XP_Slinger]

View attachment 108783

Have no fear, I won’t port mine before all comparative events are complete.