new member

heres my 02 , been overhauling it for something to do while awaiting back surgery,



now running 674cc ross 12:1 modified piston, kelford super motard camgrind, k/white ov/size valves, ported head, fcr carb, custom airbox,& exhaust system, xr400 ign, electrosport twin stator, twin core rads, moto sr revalved shock, eibach .47 kg f/springs, ov/size wavy fr disc, s/steel braided b/lines,ufo black plastics,ascerbis cyclops h/light, led indys +taillight, rebuilt every thing else

Welcome

Nice Kiwi,

and welcome too.
Tell me more about the twin-core rads pls?
Highly interested in getting diff rads than the std one's on mine, hence me Q.

welcome!

more details on the custom airbox please. I see it still uses the original side panel - do you just mean its custom because of the panels holes?

Cheers
SkidMark

Welcome to the forums....we are a good bunch; just don't try and sell anything to you have posted 500 times or more lol only gesting....I think

the rads are chinese versions, they are apprx same size but have two rows[ coolant tubes] vs one row of std type , they are heavier than std [probly double], ive also eliminated the thermostat housing, replaced it with a handmade 2-1 y connector, + the obligitry 22psi rad cap, dont have a fan , but have considered it, the mtrs in fairly high state of tune, runs fairly hot[ 68degree overlap cam, 275 duration@+50 thou, 395 thou lift max], ive dissected the std air boot at the widest section, made custom plenum that copies that shape, then flows to a 3.5" 90degree ex bend, it enters a custom filter housing, containing as large a k&n pod filter i could fit comfortably inside housing[ approx twice the filtering area of std type k&n panel filter], this is then blended to the std sidecover holder, then the modded black cover. simple really!, not! , took a bit of effort to get it fitting to everything, around everything, the back tyre can still scuff it at max travel[ which ive reduced as im short]

temporary kiwi wrote:the rads are chinese versions, they are apprx same size but have two rows[ coolant tubes] vs one row of std type , they are heavier than std [probly double], ive also eliminated the thermostat housing, replaced it with a handmade 2-1 y connector, + the obligitry 22psi rad cap, dont have a fan , but have considered it, the mtrs in fairly high state of tune, runs fairly hot[ 68degree overlap cam, 275 duration@+50 thou, 395 thou lift max], ive dissected the std air boot at the widest section, made custom plenum that copies that shape, then flows to a 3.5" 90degree ex bend, it enters a custom filter housing, containing as large a k&n pod filter i could fit comfortably inside housing[ approx twice the filtering area of std type k&n panel filter], this is then blended to the std sidecover holder, then the modded black cover. simple really!, not! , took a bit of effort to get it fitting to everything, around everything, the back tyre can still scuff it at max travel[ which ive reduced as im short]

Welcome.

How about posting some pictures of the air box mod?

the best thing about what i made is the smooth inside curve / neck

the standard honda plastic box is a horrible airflow stalling mess of conflicting curves & angles

basically the standard airbox doesnt have enough flow potential, the standard panel is just big enough for a standard 48 hp BRP, but AS SOON AS you make that big piston start breathing better you run out of air volume / flow as the revs rise

opening up the side panel is a must once you start going for more max HP - the standard de-choked inlet holes are OK for the standard cam, but the stock powerband is over by 6500 rpm. im revving to 9500 rpm & trying for more top end so i can powerslide at the ton

temporary kiwi wrote:the rads are chinese versions, they are apprx same size but have two rows[ coolant tubes] vs one row of std type , they are heavier than std [probly double], ive also eliminated the thermostat housing, replaced it with a handmade 2-1 y connector, + the obligitry 22psi rad cap, dont have a fan , but have considered it, the mtrs in fairly high state of tune, runs fairly hot[ 68degree overlap cam, 275 duration@+50 thou, 395 thou lift max], ive dissected the std air boot at the widest section, made custom plenum that copies that shape, then flows to a 3.5" 90degree ex bend, it enters a custom filter housing, containing as large a k&n pod filter i could fit comfortably inside housing[ approx twice the filtering area of std type k&n panel filter], this is then blended to the std sidecover holder, then the modded black cover. simple really!, not! , took a bit of effort to get it fitting to everything, around everything, the back tyre can still scuff it at max travel[ which ive reduced as im short]

Nice!

From whom did you buy the Chicom radiators? EBay?

hi, we have auction site in kiwiland called "trade me", i got the pair for $135nz dollars, which is his buy now price , they have really thick side plates, tig welded tanks, + they are polished,