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stagger port

Posted: August 13th, 2011, 8:01 pm
by 100hp honda
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

Posted: August 14th, 2011, 12:15 pm
by NightBiker07
If i Recall, GSS sent bob a cylinder with his brand new secret stagger port layout :lol:

Posted: August 14th, 2011, 8:09 pm
by 100hp honda
naw thats something different. maybe was on different site someone tried it. cant recall

Posted: August 15th, 2011, 6:31 am
by Roostius_Maximus
i think we had this conversation :wink:

Posted: August 15th, 2011, 8:28 pm
by 100hp honda
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.

Posted: August 16th, 2011, 9:22 pm
by bearorso
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................

Posted: August 16th, 2011, 10:12 pm
by 2strokeforever
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)

Posted: August 18th, 2011, 8:34 pm
by 100hp honda
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 :)



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Posted: August 19th, 2011, 5:58 am
by Roostius_Maximus
exhaust port needs more work :wink:

Posted: August 19th, 2011, 10:22 am
by blownbillybob
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!!!!

Posted: August 19th, 2011, 4:25 pm
by 100hp honda
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 :)

Posted: August 19th, 2011, 4:54 pm
by dannygraves
in the time it took to post again you could have made those ports bigger :wink:

Posted: August 20th, 2011, 12:27 pm
by 100hp honda
i hear what your saying :D . 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

Posted: August 27th, 2011, 8:07 pm
by 100hp honda
well it does run. not sure i can ask for any more than that :D . 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 :lol: . brake hose showed up 5min after this. thnx hoofarted it works sweet. find out tomorow how this turd wagon does