stagger port

100hp honda · Post by **100hp honda** » August 13th, 2011, 8:01 pm

thought somebody tried it but cant recall. with kicker 4 port design i see how it could work on paper. any feed back from somebody that did this before ? im thinking mains open first with less up angle. should keep everything to the rear of the jug better unless my thinking is off

NightBiker07 · Post by **NightBiker07** » August 14th, 2011, 12:15 pm

If i Recall, GSS sent bob a cylinder with his brand new secret stagger port layout

100hp honda · Post by **100hp honda** » August 14th, 2011, 8:09 pm

naw thats something different. maybe was on different site someone tried it. cant recall

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » August 15th, 2011, 6:31 am

i think we had this conversation

100hp honda · Post by **100hp honda** » August 15th, 2011, 8:28 pm

scoured the web for info. couldnt find much. gordon jennings mentions it but not much details. dude on another site said he had good results but didnt elaborate on the exact setup. some of calvins stuff is using it before any porting mods, not sure if his modified setups are running it or not. i think i understand the concept of it, just wish i could find more info explaining the benefits if done properly.

bearorso · Post by **bearorso** » August 16th, 2011, 9:22 pm

Non symetrical / staggered / additional ports have been around since the dawn of 2ts.

Some favour it for the mix / tumbling of the charge, , variations on port timing etc.

Now, the thing is, if it's what you intended /believe in (with regards to transfers, in this case), when it's 'discovered' by customers, and put up on certain sites for all to see, You've got to weigh the benefits of explaining your reasons for doing so, (or just simply saying that's how you do your porting), as against not doing so, and, perhaps, keeping others from trying your ideas.

I think we've seen the results of the second of those options, if that indeed was the option taken. It was not a 'winning' descision, I'd say................

2strokeforever · Post by **2strokeforever** » August 16th, 2011, 10:12 pm

im pretty sure honda cr 80s use that, and they have better low, mid and top than the powervalve 80 and 85 engines (except KTM of course)

100hp honda · Post by **100hp honda** » August 18th, 2011, 8:34 pm

did this on spur of the moment just because. started with stock jug so will be impossible to say good or bad how stagger works because i altered other stuff at the same time. oh well dont have time right now to screw around testing shit. something diff im gonna try on this one. 197 exh now then use 2 base gasket to put it 199*. main trans 32 bd and rear trans 33 bd. thinking may not have enough area in the exh port but gonna try it anyways. in a rush to get it done so ill change stuff later if need be. relief the bridge and do tiny bit more on the intake side tomorow and slap it back together

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » August 19th, 2011, 5:58 am

exhaust port needs more work

blownbillybob · Post by **blownbillybob** » August 19th, 2011, 10:22 am

Dam!!!!

Clyde been spending some hours on the grinder!! Not bad looks good!!!

I thought the staggered ports mellows out the hit!! Which is good for single track and Moto!!!!

100hp honda · Post by **100hp honda** » August 19th, 2011, 4:25 pm

whole thing could probly use more work. time is critical now. has to be running in a week. still got to assemble everything, change bearings, clean filter, swap forks springs, and mount tires. not looking for king of the hill. just spank some tards on 4pokes. should do the trick

dannygraves · Post by **dannygraves** » August 19th, 2011, 4:54 pm

in the time it took to post again you could have made those ports bigger

100hp honda · Post by **100hp honda** » August 20th, 2011, 12:27 pm

i hear what your saying

. jug bolted down now though. will do a few more things at a later time. want to try some epoxy in a few places. might even get rid of the stagger deal depending how it runs. rework the exh alittle. ill report back fo sho

100hp honda · Post by **100hp honda** » August 27th, 2011, 8:07 pm

well it does run. not sure i can ask for any more than that

. been in the barn 1.5 years so im glad to brush the dust off. had some rust on the bore so i gave it the britincali treatment with 220 grit

. brake hose showed up 5min after this. thnx hoofarted it works sweet. find out tomorow how this turd wagon does

BannedCR500Riders.com

stagger port

stagger port