Drilling auxilliary lift holes.

[leevtr]

I did try to find the answer in the knowledgebase, but to no avail, so......

I've heard somewhere that you shouldn't drill the slides when fitting the DJ kit, even though it instructs you to do so.

I remember vaguely, the fella who installed my last one, saying he didn't drill them.

My question is, am I correct, and why not ??

Ta.

[lloydie]

if you have the uk dyno jet kit fitted dont drill the slides as you use the standard springs .
but i did mine and they work fine .
if you dont want to drill yours buy a spare set of carbs and drill them .

[leevtr]

if you have the uk dyno jet kit fitted dont drill the slides as you use the standard springs .
but i did mine and they work fine .
if you dont want to drill yours buy a spare set of carbs and drill them .

Its just arrived in the post so just getting it straight in my head before I embark on another unnecessary mod !!

I shall leave them undrilled . Ta

[lloydie]

If you drill them and want to block them up use epoxy resin

[leevtr]

If you drill them and want to block them up use epoxy resin

Whats the difference anyway?

[VTRDark]

An extra lift hole will open the slide quicker possibly over fuelling that part of the the carb circuit. As standard there are two lift holes dynojet require a third, but I think this is possibly only any good with the dynojet springs fitted which are shorter than the standard storm springs and only come with the US dynojet kit not UK.

(:-})

[leevtr]

Cheers chaps.

[benny hedges]

wouldnt bother tbh.
as shown on the dyno it makes matters worse.
best thing you can do is get a new set of diaphragm springs instead instead of the old tired 10yr+ ones you have now.
do not fit the shorter dj springs - they make your bike run like shite.

fitting the short springs and adding the extra hole as per the instructions from dynojet, the slides lift way too early and comes on the mains too soon, making the mix massively over-rich, resulting in a very boggy feeling motor thats very hesitant to rev.
when you eventually get to 6-7k you will think you have hit a power band as the mix leans out, but this is simply when the engine passes the ridiculous flat spot caused by the dj mods.

do not do it.

i would love to see the actual dyno research that dynojet did before recommending making these changes.
(it doesnt exist imo)
i wasted a lot of money and time on this and ended up blocking the new slide holes off and fitting new std springs.

don't make the same mistake!

[VTRDark]

I put new diaphragm springs in my carbs, it's surprising how much longer the new ones where. Ordered them from Wemoto and had to wait 2 weeks for them to arrive from their suppliers in Holland. It made a definite improvement though.

(:-})

[benny hedges]

I put new diaphragm springs in my carbs, it's surprising how much longer the new ones where.
(:-})

indeed. mine were the same.
the old springs loose a lot of tension over time.
result is a snappier, crisper feeling throttle response, just as nature intended