Fitting Dynojet Kit

[seb421]

I've had it in my garage now for a few years and never got round to fitting it,

How hard is it to fit the kit?

i remember reading it requires drilling is it something i should get a pro to fit?

Any good instructions or a guide knocking about chaps?

[leevtr]

I to would like to hear the answer to this question.

[Wicky]

I got a pro to set mine up at the local Honda shop in conjunction with a K&N, open pipes and the dynojet kit and on a dyno (8 runs) - I don't think it is a plug-and-play tuning mod.

[benny hedges]

I've had it in my garage now for a few years and never got round to fitting it,

How hard is it to fit the kit?

i remember reading it requires drilling is it something i should get a pro to fit?

Any good instructions or a guide knocking about chaps?

tbh i wouldnt bother drilling it mate - it fkt mine up on the dyno.
and dont fit the short srings if you have them in your kit as they make the slides open too fast and bog it down in the middle a bit (lot)

the rest of it is easy but some have got better results by keeping the standard vtr needles and just jacking them with m4 washers.

mine ran best on the 190/195 jest from the kit.

you may also need to go up to 48 pilot jets (part number is here somewhere.
and twiddle with the mixture screw.
i have a tool for that if u want to borrow it.

in fact if youre not sure what to do just fetch it round here. i can pick up some washers from work if u want.

[leevtr]

I had a dynojet kit fitted to my previous storm. My mechanic did it ( an old boy who worked from home, and had previously ran the first 5 star Honda workshop in London ) he set it up according to the destructions supplied, then just rode it to test. When I later ( much later ) took my bike to dsd for a power run, The bike was found to be running pretty much spot on, according to Grumpy's dyno, and was making 115 bhp. Optimistic, who knows, but Paul ( aka Grumpy ) insisted the dyno was recently calibrated and was accurate. Even he was surprised when I told him that the jet kit hadnt been set up on a dyno, and the best he'd seen before was his own, at 112bhp. I'll also add, that the bike had done close to 40,000 miles at this time.

[Snoogle]

I had a dynojet kit fitted to my previous storm. My mechanic did it ( an old boy who worked from home, and had previously ran the first 5 star Honda workshop in London ) he set it up according to the destructions supplied, then just rode it to test. When I later ( much later ) took my bike to dsd for a power run, The bike was found to be running pretty much spot on, according to Grumpy's dyno, and was making 115 bhp. Optimistic, who knows, but Paul ( aka Grumpy ) insisted the dyno was recently calibrated and was accurate. Even he was surprised when I told him that the jet kit hadnt been set up on a dyno, and the best he'd seen before was his own, at 112bhp. I'll also add, that the bike had done close to 40,000 miles at this time.

Was the old boys name Yoda??

[leevtr]

No, Obee Wan ( or however its spelt !! )

[thumperslaw]

Done my own fitting and setting up (few runs down the road)

Mine also seems spot on and pumping out about 111bhp give or take
but then i have fitted alots of dyno jet kits to other bikes in the past. I would say tea or coffe always helps

[seb421]

I've had it in my garage now for a few years and never got round to fitting it,

How hard is it to fit the kit?

i remember reading it requires drilling is it something i should get a pro to fit?

Any good instructions or a guide knocking about chaps?

tbh i wouldnt bother drilling it mate - it fkt mine up on the dyno.
and dont fit the short srings if you have them in your kit as they make the slides open too fast and bog it down in the middle a bit (lot)

the rest of it is easy but some have got better results by keeping the standard vtr needles and just jacking them with m4 washers.

mine ran best on the 190/195 jest from the kit.

you may also need to go up to 48 pilot jets (part number is here somewhere.
and twiddle with the mixture screw.
i have a tool for that if u want to borrow it.

in fact if youre not sure what to do just fetch it round here. i can pick up some washers from work if u want.

what's it supposed to do drilling the slides anyway?

that was what put me off a few years ago and made me put them in the storm box of gubbins and other crap only to be found again in a clean up

[tony.mon]

The holes allow the slides to lift at a different speed, as they're not acting as pistons in a sealed chamber, operated against the spring by vaccuum form the inlets.

Imagine that the inlet vacuum rises, this effectively lifts the slides.
The new holes leak some of the vacuum out, and affect the lift that you'd get otherwise.

More or bigger holes+ less lift.

That's why I used the Factory Pro kit; no holes drilled means that it's a reversible fit.

Actually, thinking about this a bit, Storms run badly when the vacuum leaks, so not sure really what they're trying to achieve.
It's only going to be a tiny bit of air leaking back through the hole, and it'll be coming from the inlet tract itself, so both sides of the hole should be at equal pressure anyway.


BTW, the triangular filters inside the airbox filter the air going in and out behind the carb diaphragm, above the slide, so make sure they're clean and complete.
If not, don't buy Honda ones, a bit of oiled foam air filter element sponge can be cut to fit, just don't over-oil it.

Anyone else got an opinion as to how these work and what's meant to be the overall effect?

[benny hedges]

The holes allow the slides to lift at a different speed, as they're not acting as pistons in a sealed chamber, operated against the spring by vaccuum form the inlets.


Actually, thinking about this a bit, Storms run badly when the vacuum leaks, so not sure really what they're trying to achieve.

on the dyno mine was noticeably worse off for having the extra holes (and light springs)

i fitted a new set of oem springs - which were considerbly longer than the 10 year old ones, superglued a piece of o'ring in the drilled hole & gained 8bhp with much smoother running through the rpm range.
so, dont bother with the holes. does crouton all apart from make the slides rise too quick, meaning you're coming on the mains too early and the needle setting is wrong all the way.

as said earlier, there is an article here somewhere, taken from superchicken.com with a comprehensive guide to sorting the jetting.
the dj needles are known to be a rough finish and will eventually wear the emulsion tubes oval, and the profile
is wrong for the storm.
best results were with the standard needles jacked up with m4 brass washers (from b&q)
... no extra hole in the slides, 48 pilots and a fivers worth of keihin jets.
no need to spend £80 on a dynojet kit, just buy the keihin jets 180 to 190 and spend the change on a few dyno runs to check the fuelling.
you can get the jets off ebay for about £2.00 each

[leevtr]

Sounds complicated !!

[thumperslaw]

Mine has the extra holes drilled and i think that's why mine is still little crappy down low end.

Going to be changing the slides for non drilled one's then go for a ride

[thumperslaw]

Mine has the extra holes drilled and i think that's why mine is still little crappy down low end.

Going to be changing the slides for non drilled one's then go for a ride

[seb421]

Thanks for the feedback guy's

I had spent some time looking for a factory pro item but not seen one for ages now in the uk

think i will leave the slides then i do need the low down little throttle for them 30mph limits on the way to work (Leyland has a crazy amount of very active police, and i guess the only way to pay for those police is for them to catch crims)

i got it years ago fair cheep brand new off ebay was very happy with my self for winning it for 40 quid delivered as the box stated a list price of 86 quid or more

Might give it ago tonight not sure, they do need balancing badly, running like a pig at the moment trying to do low revs at a constant 30mph run kind of like a new driver on off on off on off